Add frozen_string_literal to spec/lib (part 1)

Using the sed script from
https://gitlab.com/gitlab-org/gitlab-ce/issues/59758

395 files changed, 790 insertions, 0 deletions

diff --git a/spec/lib/after_commit_queue_spec.rb b/spec/lib/after_commit_queue_spec.rb
index 6e7c2ec2363..8e9dfd90338 100644
--- a/spec/lib/after_commit_queue_spec.rb
+++ b/spec/lib/after_commit_queue_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe AfterCommitQueue do
diff --git a/spec/lib/api/api_spec.rb b/spec/lib/api/api_spec.rb
index ceef0b41e59..c83d068ca50 100644
--- a/spec/lib/api/api_spec.rb
+++ b/spec/lib/api/api_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe API::API do
diff --git a/spec/lib/api/helpers/custom_validators_spec.rb b/spec/lib/api/helpers/custom_validators_spec.rb
index aed86b21cb7..1ebce2ab5c4 100644
--- a/spec/lib/api/helpers/custom_validators_spec.rb
+++ b/spec/lib/api/helpers/custom_validators_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe API::Helpers::CustomValidators do
diff --git a/spec/lib/api/helpers/pagination_spec.rb b/spec/lib/api/helpers/pagination_spec.rb
index b0a00392957..b57adb46385 100644
--- a/spec/lib/api/helpers/pagination_spec.rb
+++ b/spec/lib/api/helpers/pagination_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe API::Helpers::Pagination do
diff --git a/spec/lib/api/helpers/related_resources_helpers_spec.rb b/spec/lib/api/helpers/related_resources_helpers_spec.rb
index 99fe8795d91..fb26cc417e8 100644
--- a/spec/lib/api/helpers/related_resources_helpers_spec.rb
+++ b/spec/lib/api/helpers/related_resources_helpers_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe API::Helpers::RelatedResourcesHelpers do
diff --git a/spec/lib/api/helpers/version_spec.rb b/spec/lib/api/helpers/version_spec.rb
index 34006e0930b..a9f33962537 100644
--- a/spec/lib/api/helpers/version_spec.rb
+++ b/spec/lib/api/helpers/version_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe API::Helpers::Version do
diff --git a/spec/lib/api/helpers_spec.rb b/spec/lib/api/helpers_spec.rb
index 00916f80784..0624c25e734 100644
--- a/spec/lib/api/helpers_spec.rb
+++ b/spec/lib/api/helpers_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe API::Helpers do
diff --git a/spec/lib/backup/files_spec.rb b/spec/lib/backup/files_spec.rb
index 63f2298357f..e903eada62d 100644
--- a/spec/lib/backup/files_spec.rb
+++ b/spec/lib/backup/files_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Backup::Files do
diff --git a/spec/lib/backup/manager_spec.rb b/spec/lib/backup/manager_spec.rb
index ae1c881e1f6..fee7ffc60ee 100644
--- a/spec/lib/backup/manager_spec.rb
+++ b/spec/lib/backup/manager_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Backup::Manager do
diff --git a/spec/lib/backup/repository_spec.rb b/spec/lib/backup/repository_spec.rb
index 5ace5c5b1a2..e1d46c25338 100644
--- a/spec/lib/backup/repository_spec.rb
+++ b/spec/lib/backup/repository_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Backup::Repository do
diff --git a/spec/lib/backup/uploads_spec.rb b/spec/lib/backup/uploads_spec.rb
index 544d3754c0f..55b69f29812 100644
--- a/spec/lib/backup/uploads_spec.rb
+++ b/spec/lib/backup/uploads_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Backup::Uploads do
diff --git a/spec/lib/banzai/color_parser_spec.rb b/spec/lib/banzai/color_parser_spec.rb
index af2a8f215c1..d9202ce77db 100644
--- a/spec/lib/banzai/color_parser_spec.rb
+++ b/spec/lib/banzai/color_parser_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::ColorParser do
diff --git a/spec/lib/banzai/commit_renderer_spec.rb b/spec/lib/banzai/commit_renderer_spec.rb
index 316dbf052c3..e5a16b167be 100644
--- a/spec/lib/banzai/commit_renderer_spec.rb
+++ b/spec/lib/banzai/commit_renderer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::CommitRenderer do
diff --git a/spec/lib/banzai/cross_project_reference_spec.rb b/spec/lib/banzai/cross_project_reference_spec.rb
index ba995e16be7..cf41af7e7a1 100644
--- a/spec/lib/banzai/cross_project_reference_spec.rb
+++ b/spec/lib/banzai/cross_project_reference_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::CrossProjectReference do
diff --git a/spec/lib/banzai/filter/absolute_link_filter_spec.rb b/spec/lib/banzai/filter/absolute_link_filter_spec.rb
index 50be551cd90..b61bd496dba 100644
--- a/spec/lib/banzai/filter/absolute_link_filter_spec.rb
+++ b/spec/lib/banzai/filter/absolute_link_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::AbsoluteLinkFilter do
diff --git a/spec/lib/banzai/filter/abstract_reference_filter_spec.rb b/spec/lib/banzai/filter/abstract_reference_filter_spec.rb
index 1e82d18d056..3e8b0ea113f 100644
--- a/spec/lib/banzai/filter/abstract_reference_filter_spec.rb
+++ b/spec/lib/banzai/filter/abstract_reference_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::AbstractReferenceFilter do
diff --git a/spec/lib/banzai/filter/ascii_doc_post_processing_filter_spec.rb b/spec/lib/banzai/filter/ascii_doc_post_processing_filter_spec.rb
index 34f1657b6d3..bd06dae26ba 100644
--- a/spec/lib/banzai/filter/ascii_doc_post_processing_filter_spec.rb
+++ b/spec/lib/banzai/filter/ascii_doc_post_processing_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::AsciiDocPostProcessingFilter do
diff --git a/spec/lib/banzai/filter/autolink_filter_spec.rb b/spec/lib/banzai/filter/autolink_filter_spec.rb
index 4972c4b4bd2..8fba72a23f6 100644
--- a/spec/lib/banzai/filter/autolink_filter_spec.rb
+++ b/spec/lib/banzai/filter/autolink_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::AutolinkFilter do
diff --git a/spec/lib/banzai/filter/blockquote_fence_filter_spec.rb b/spec/lib/banzai/filter/blockquote_fence_filter_spec.rb
index 5b3f679084e..807f1b8bbd3 100644
--- a/spec/lib/banzai/filter/blockquote_fence_filter_spec.rb
+++ b/spec/lib/banzai/filter/blockquote_fence_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Banzai::Filter::BlockquoteFenceFilter do
diff --git a/spec/lib/banzai/filter/color_filter_spec.rb b/spec/lib/banzai/filter/color_filter_spec.rb
index a098b037510..f8931d37b99 100644
--- a/spec/lib/banzai/filter/color_filter_spec.rb
+++ b/spec/lib/banzai/filter/color_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::ColorFilter, lib: true do
diff --git a/spec/lib/banzai/filter/commit_range_reference_filter_spec.rb b/spec/lib/banzai/filter/commit_range_reference_filter_spec.rb
index 4daf6be1bb7..a82b890be42 100644
--- a/spec/lib/banzai/filter/commit_range_reference_filter_spec.rb
+++ b/spec/lib/banzai/filter/commit_range_reference_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::CommitRangeReferenceFilter do
diff --git a/spec/lib/banzai/filter/commit_reference_filter_spec.rb b/spec/lib/banzai/filter/commit_reference_filter_spec.rb
index d6c9e9e4b19..1bc0335cfc0 100644
--- a/spec/lib/banzai/filter/commit_reference_filter_spec.rb
+++ b/spec/lib/banzai/filter/commit_reference_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::CommitReferenceFilter do
diff --git a/spec/lib/banzai/filter/commit_trailers_filter_spec.rb b/spec/lib/banzai/filter/commit_trailers_filter_spec.rb
index 068cdc85a07..bcb74be1034 100644
--- a/spec/lib/banzai/filter/commit_trailers_filter_spec.rb
+++ b/spec/lib/banzai/filter/commit_trailers_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'ffaker'
 
diff --git a/spec/lib/banzai/filter/emoji_filter_spec.rb b/spec/lib/banzai/filter/emoji_filter_spec.rb
index 85a4619e33d..4e163668a28 100644
--- a/spec/lib/banzai/filter/emoji_filter_spec.rb
+++ b/spec/lib/banzai/filter/emoji_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::EmojiFilter do
diff --git a/spec/lib/banzai/filter/external_issue_reference_filter_spec.rb b/spec/lib/banzai/filter/external_issue_reference_filter_spec.rb
index 7c94cf37e32..78795a157f8 100644
--- a/spec/lib/banzai/filter/external_issue_reference_filter_spec.rb
+++ b/spec/lib/banzai/filter/external_issue_reference_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::ExternalIssueReferenceFilter do
diff --git a/spec/lib/banzai/filter/external_link_filter_spec.rb b/spec/lib/banzai/filter/external_link_filter_spec.rb
index 2acbe05f082..59fea5766ee 100644
--- a/spec/lib/banzai/filter/external_link_filter_spec.rb
+++ b/spec/lib/banzai/filter/external_link_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 shared_examples 'an external link with rel attribute' do
diff --git a/spec/lib/banzai/filter/front_matter_filter_spec.rb b/spec/lib/banzai/filter/front_matter_filter_spec.rb
index 3071dc7cf21..90b383dbcff 100644
--- a/spec/lib/banzai/filter/front_matter_filter_spec.rb
+++ b/spec/lib/banzai/filter/front_matter_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Banzai::Filter::FrontMatterFilter do
diff --git a/spec/lib/banzai/filter/gollum_tags_filter_spec.rb b/spec/lib/banzai/filter/gollum_tags_filter_spec.rb
index 0e178b859c4..9d179ef2a49 100644
--- a/spec/lib/banzai/filter/gollum_tags_filter_spec.rb
+++ b/spec/lib/banzai/filter/gollum_tags_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::GollumTagsFilter do
diff --git a/spec/lib/banzai/filter/html_entity_filter_spec.rb b/spec/lib/banzai/filter/html_entity_filter_spec.rb
index 1d98fc0d5db..6017380725d 100644
--- a/spec/lib/banzai/filter/html_entity_filter_spec.rb
+++ b/spec/lib/banzai/filter/html_entity_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::HtmlEntityFilter do
diff --git a/spec/lib/banzai/filter/image_lazy_load_filter_spec.rb b/spec/lib/banzai/filter/image_lazy_load_filter_spec.rb
index d06c5535309..6475fd14ce4 100644
--- a/spec/lib/banzai/filter/image_lazy_load_filter_spec.rb
+++ b/spec/lib/banzai/filter/image_lazy_load_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::ImageLazyLoadFilter do
diff --git a/spec/lib/banzai/filter/image_link_filter_spec.rb b/spec/lib/banzai/filter/image_link_filter_spec.rb
index c84b98eb225..7b0cb675551 100644
--- a/spec/lib/banzai/filter/image_link_filter_spec.rb
+++ b/spec/lib/banzai/filter/image_link_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::ImageLinkFilter do
diff --git a/spec/lib/banzai/filter/inline_diff_filter_spec.rb b/spec/lib/banzai/filter/inline_diff_filter_spec.rb
index 63c4ab61b86..c09065fb746 100644
--- a/spec/lib/banzai/filter/inline_diff_filter_spec.rb
+++ b/spec/lib/banzai/filter/inline_diff_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::InlineDiffFilter do
diff --git a/spec/lib/banzai/filter/issuable_state_filter_spec.rb b/spec/lib/banzai/filter/issuable_state_filter_spec.rb
index a5373517ac8..9f6dcded56f 100644
--- a/spec/lib/banzai/filter/issuable_state_filter_spec.rb
+++ b/spec/lib/banzai/filter/issuable_state_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::IssuableStateFilter do
diff --git a/spec/lib/banzai/filter/issue_reference_filter_spec.rb b/spec/lib/banzai/filter/issue_reference_filter_spec.rb
index 914c4e2d823..4a412da27a7 100644
--- a/spec/lib/banzai/filter/issue_reference_filter_spec.rb
+++ b/spec/lib/banzai/filter/issue_reference_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::IssueReferenceFilter do
diff --git a/spec/lib/banzai/filter/label_reference_filter_spec.rb b/spec/lib/banzai/filter/label_reference_filter_spec.rb
index 108d7b43a26..213a5459118 100644
--- a/spec/lib/banzai/filter/label_reference_filter_spec.rb
+++ b/spec/lib/banzai/filter/label_reference_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'html/pipeline'
 
diff --git a/spec/lib/banzai/filter/markdown_filter_spec.rb b/spec/lib/banzai/filter/markdown_filter_spec.rb
index 83fcda29680..06df67facf9 100644
--- a/spec/lib/banzai/filter/markdown_filter_spec.rb
+++ b/spec/lib/banzai/filter/markdown_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::MarkdownFilter do
diff --git a/spec/lib/banzai/filter/math_filter_spec.rb b/spec/lib/banzai/filter/math_filter_spec.rb
index cade8cb409e..c8fd92edcdf 100644
--- a/spec/lib/banzai/filter/math_filter_spec.rb
+++ b/spec/lib/banzai/filter/math_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::MathFilter do
diff --git a/spec/lib/banzai/filter/merge_request_reference_filter_spec.rb b/spec/lib/banzai/filter/merge_request_reference_filter_spec.rb
index 72dfd6ff9ea..12ee952b10e 100644
--- a/spec/lib/banzai/filter/merge_request_reference_filter_spec.rb
+++ b/spec/lib/banzai/filter/merge_request_reference_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::MergeRequestReferenceFilter do
diff --git a/spec/lib/banzai/filter/mermaid_filter_spec.rb b/spec/lib/banzai/filter/mermaid_filter_spec.rb
index f6474c8936d..ae6725cc14c 100644
--- a/spec/lib/banzai/filter/mermaid_filter_spec.rb
+++ b/spec/lib/banzai/filter/mermaid_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::MermaidFilter do
diff --git a/spec/lib/banzai/filter/milestone_reference_filter_spec.rb b/spec/lib/banzai/filter/milestone_reference_filter_spec.rb
index f0a5dc8d0d7..89c0c12fbfe 100644
--- a/spec/lib/banzai/filter/milestone_reference_filter_spec.rb
+++ b/spec/lib/banzai/filter/milestone_reference_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::MilestoneReferenceFilter do
diff --git a/spec/lib/banzai/filter/plantuml_filter_spec.rb b/spec/lib/banzai/filter/plantuml_filter_spec.rb
index 6f7acfe7072..713bab4527b 100644
--- a/spec/lib/banzai/filter/plantuml_filter_spec.rb
+++ b/spec/lib/banzai/filter/plantuml_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::PlantumlFilter do
diff --git a/spec/lib/banzai/filter/reference_filter_spec.rb b/spec/lib/banzai/filter/reference_filter_spec.rb
index f96b6c83b0a..d889b0b832d 100644
--- a/spec/lib/banzai/filter/reference_filter_spec.rb
+++ b/spec/lib/banzai/filter/reference_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::ReferenceFilter do
diff --git a/spec/lib/banzai/filter/reference_redactor_filter_spec.rb b/spec/lib/banzai/filter/reference_redactor_filter_spec.rb
index e87440895e0..dc888a47988 100644
--- a/spec/lib/banzai/filter/reference_redactor_filter_spec.rb
+++ b/spec/lib/banzai/filter/reference_redactor_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::ReferenceRedactorFilter do
diff --git a/spec/lib/banzai/filter/relative_link_filter_spec.rb b/spec/lib/banzai/filter/relative_link_filter_spec.rb
index a714fa50f5f..ecb83b6cb66 100644
--- a/spec/lib/banzai/filter/relative_link_filter_spec.rb
+++ b/spec/lib/banzai/filter/relative_link_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::RelativeLinkFilter do
diff --git a/spec/lib/banzai/filter/sanitization_filter_spec.rb b/spec/lib/banzai/filter/sanitization_filter_spec.rb
index f2a5d7b2c9f..8a4b819e4d6 100644
--- a/spec/lib/banzai/filter/sanitization_filter_spec.rb
+++ b/spec/lib/banzai/filter/sanitization_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::SanitizationFilter do
diff --git a/spec/lib/banzai/filter/snippet_reference_filter_spec.rb b/spec/lib/banzai/filter/snippet_reference_filter_spec.rb
index 21cf092428d..62ce12406a2 100644
--- a/spec/lib/banzai/filter/snippet_reference_filter_spec.rb
+++ b/spec/lib/banzai/filter/snippet_reference_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::SnippetReferenceFilter do
diff --git a/spec/lib/banzai/filter/spaced_link_filter_spec.rb b/spec/lib/banzai/filter/spaced_link_filter_spec.rb
index 76d7644d76c..98c38813144 100644
--- a/spec/lib/banzai/filter/spaced_link_filter_spec.rb
+++ b/spec/lib/banzai/filter/spaced_link_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::SpacedLinkFilter do
diff --git a/spec/lib/banzai/filter/syntax_highlight_filter_spec.rb b/spec/lib/banzai/filter/syntax_highlight_filter_spec.rb
index 80ca7a63435..f220ccecee1 100644
--- a/spec/lib/banzai/filter/syntax_highlight_filter_spec.rb
+++ b/spec/lib/banzai/filter/syntax_highlight_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::SyntaxHighlightFilter do
diff --git a/spec/lib/banzai/filter/table_of_contents_filter_spec.rb b/spec/lib/banzai/filter/table_of_contents_filter_spec.rb
index 4a9880ac85a..cd3bdf49496 100644
--- a/spec/lib/banzai/filter/table_of_contents_filter_spec.rb
+++ b/spec/lib/banzai/filter/table_of_contents_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::TableOfContentsFilter do
diff --git a/spec/lib/banzai/filter/user_reference_filter_spec.rb b/spec/lib/banzai/filter/user_reference_filter_spec.rb
index 1e8a44b4549..6bc87d245f5 100644
--- a/spec/lib/banzai/filter/user_reference_filter_spec.rb
+++ b/spec/lib/banzai/filter/user_reference_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::UserReferenceFilter do
diff --git a/spec/lib/banzai/filter/video_link_filter_spec.rb b/spec/lib/banzai/filter/video_link_filter_spec.rb
index 81dda0687f3..483e806624c 100644
--- a/spec/lib/banzai/filter/video_link_filter_spec.rb
+++ b/spec/lib/banzai/filter/video_link_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::VideoLinkFilter do
diff --git a/spec/lib/banzai/filter/wiki_link_filter_spec.rb b/spec/lib/banzai/filter/wiki_link_filter_spec.rb
index cce1cd0b284..9694c44c17a 100644
--- a/spec/lib/banzai/filter/wiki_link_filter_spec.rb
+++ b/spec/lib/banzai/filter/wiki_link_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Filter::WikiLinkFilter do
diff --git a/spec/lib/banzai/filter_array_spec.rb b/spec/lib/banzai/filter_array_spec.rb
index ea84005e7f8..bed41a80d29 100644
--- a/spec/lib/banzai/filter_array_spec.rb
+++ b/spec/lib/banzai/filter_array_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::FilterArray do
diff --git a/spec/lib/banzai/issuable_extractor_spec.rb b/spec/lib/banzai/issuable_extractor_spec.rb
index f42951d9781..7fa6048c1c6 100644
--- a/spec/lib/banzai/issuable_extractor_spec.rb
+++ b/spec/lib/banzai/issuable_extractor_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::IssuableExtractor do
diff --git a/spec/lib/banzai/object_renderer_spec.rb b/spec/lib/banzai/object_renderer_spec.rb
index e3e6e22568c..a523608fa50 100644
--- a/spec/lib/banzai/object_renderer_spec.rb
+++ b/spec/lib/banzai/object_renderer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::ObjectRenderer do
diff --git a/spec/lib/banzai/pipeline/description_pipeline_spec.rb b/spec/lib/banzai/pipeline/description_pipeline_spec.rb
index 77cb1954ea3..d032ec71e45 100644
--- a/spec/lib/banzai/pipeline/description_pipeline_spec.rb
+++ b/spec/lib/banzai/pipeline/description_pipeline_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Banzai::Pipeline::DescriptionPipeline do
diff --git a/spec/lib/banzai/pipeline/email_pipeline_spec.rb b/spec/lib/banzai/pipeline/email_pipeline_spec.rb
index b99161109eb..eea25320f3d 100644
--- a/spec/lib/banzai/pipeline/email_pipeline_spec.rb
+++ b/spec/lib/banzai/pipeline/email_pipeline_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Banzai::Pipeline::EmailPipeline do
diff --git a/spec/lib/banzai/pipeline/full_pipeline_spec.rb b/spec/lib/banzai/pipeline/full_pipeline_spec.rb
index 3d3aa64d630..2b4d1b58676 100644
--- a/spec/lib/banzai/pipeline/full_pipeline_spec.rb
+++ b/spec/lib/banzai/pipeline/full_pipeline_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Banzai::Pipeline::FullPipeline do
diff --git a/spec/lib/banzai/pipeline/gfm_pipeline_spec.rb b/spec/lib/banzai/pipeline/gfm_pipeline_spec.rb
index 469692f7b5a..0a3e0962452 100644
--- a/spec/lib/banzai/pipeline/gfm_pipeline_spec.rb
+++ b/spec/lib/banzai/pipeline/gfm_pipeline_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Banzai::Pipeline::GfmPipeline do
diff --git a/spec/lib/banzai/pipeline/wiki_pipeline_spec.rb b/spec/lib/banzai/pipeline/wiki_pipeline_spec.rb
index 64ca3ec345d..cb94944fdfb 100644
--- a/spec/lib/banzai/pipeline/wiki_pipeline_spec.rb
+++ b/spec/lib/banzai/pipeline/wiki_pipeline_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Banzai::Pipeline::WikiPipeline do
diff --git a/spec/lib/banzai/querying_spec.rb b/spec/lib/banzai/querying_spec.rb
index 27da2a7439c..b7a235b0558 100644
--- a/spec/lib/banzai/querying_spec.rb
+++ b/spec/lib/banzai/querying_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Querying do
diff --git a/spec/lib/banzai/reference_parser/base_parser_spec.rb b/spec/lib/banzai/reference_parser/base_parser_spec.rb
index c6e9fc414a1..7897164d985 100644
--- a/spec/lib/banzai/reference_parser/base_parser_spec.rb
+++ b/spec/lib/banzai/reference_parser/base_parser_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::ReferenceParser::BaseParser do
diff --git a/spec/lib/banzai/reference_parser/commit_parser_spec.rb b/spec/lib/banzai/reference_parser/commit_parser_spec.rb
index f558dea209f..b44ae67e430 100644
--- a/spec/lib/banzai/reference_parser/commit_parser_spec.rb
+++ b/spec/lib/banzai/reference_parser/commit_parser_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::ReferenceParser::CommitParser do
diff --git a/spec/lib/banzai/reference_parser/commit_range_parser_spec.rb b/spec/lib/banzai/reference_parser/commit_range_parser_spec.rb
index ff3b82cc482..da853233018 100644
--- a/spec/lib/banzai/reference_parser/commit_range_parser_spec.rb
+++ b/spec/lib/banzai/reference_parser/commit_range_parser_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::ReferenceParser::CommitRangeParser do
diff --git a/spec/lib/banzai/reference_parser/external_issue_parser_spec.rb b/spec/lib/banzai/reference_parser/external_issue_parser_spec.rb
index 1cb31e57114..0f29a95bdcc 100644
--- a/spec/lib/banzai/reference_parser/external_issue_parser_spec.rb
+++ b/spec/lib/banzai/reference_parser/external_issue_parser_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::ReferenceParser::ExternalIssueParser do
diff --git a/spec/lib/banzai/reference_parser/issue_parser_spec.rb b/spec/lib/banzai/reference_parser/issue_parser_spec.rb
index 77c2064caba..a925d294b1b 100644
--- a/spec/lib/banzai/reference_parser/issue_parser_spec.rb
+++ b/spec/lib/banzai/reference_parser/issue_parser_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::ReferenceParser::IssueParser do
diff --git a/spec/lib/banzai/reference_parser/label_parser_spec.rb b/spec/lib/banzai/reference_parser/label_parser_spec.rb
index e4df2533821..cf8adb57ffc 100644
--- a/spec/lib/banzai/reference_parser/label_parser_spec.rb
+++ b/spec/lib/banzai/reference_parser/label_parser_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::ReferenceParser::LabelParser do
diff --git a/spec/lib/banzai/reference_parser/merge_request_parser_spec.rb b/spec/lib/banzai/reference_parser/merge_request_parser_spec.rb
index 5417b1f00be..1561dabcdbf 100644
--- a/spec/lib/banzai/reference_parser/merge_request_parser_spec.rb
+++ b/spec/lib/banzai/reference_parser/merge_request_parser_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::ReferenceParser::MergeRequestParser do
diff --git a/spec/lib/banzai/reference_parser/milestone_parser_spec.rb b/spec/lib/banzai/reference_parser/milestone_parser_spec.rb
index 751d042ffde..006f8e37690 100644
--- a/spec/lib/banzai/reference_parser/milestone_parser_spec.rb
+++ b/spec/lib/banzai/reference_parser/milestone_parser_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::ReferenceParser::MilestoneParser do
diff --git a/spec/lib/banzai/reference_parser/snippet_parser_spec.rb b/spec/lib/banzai/reference_parser/snippet_parser_spec.rb
index d410bd4c164..528f79ed020 100644
--- a/spec/lib/banzai/reference_parser/snippet_parser_spec.rb
+++ b/spec/lib/banzai/reference_parser/snippet_parser_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::ReferenceParser::SnippetParser do
diff --git a/spec/lib/banzai/reference_parser/user_parser_spec.rb b/spec/lib/banzai/reference_parser/user_parser_spec.rb
index 112447f098e..a5b4e59a3a1 100644
--- a/spec/lib/banzai/reference_parser/user_parser_spec.rb
+++ b/spec/lib/banzai/reference_parser/user_parser_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::ReferenceParser::UserParser do
diff --git a/spec/lib/banzai/reference_redactor_spec.rb b/spec/lib/banzai/reference_redactor_spec.rb
index a3b47c4d826..c30a194a0b3 100644
--- a/spec/lib/banzai/reference_redactor_spec.rb
+++ b/spec/lib/banzai/reference_redactor_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::ReferenceRedactor do
diff --git a/spec/lib/banzai/renderer_spec.rb b/spec/lib/banzai/renderer_spec.rb
index a099f7482c1..0d329b47aa3 100644
--- a/spec/lib/banzai/renderer_spec.rb
+++ b/spec/lib/banzai/renderer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Banzai::Renderer do
diff --git a/spec/lib/bitbucket/collection_spec.rb b/spec/lib/bitbucket/collection_spec.rb
index 9008cb3e870..5946be71565 100644
--- a/spec/lib/bitbucket/collection_spec.rb
+++ b/spec/lib/bitbucket/collection_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 # Emulates paginator. It returns 2 pages with results
diff --git a/spec/lib/bitbucket/connection_spec.rb b/spec/lib/bitbucket/connection_spec.rb
index 14faeb231a9..ec8eac232cd 100644
--- a/spec/lib/bitbucket/connection_spec.rb
+++ b/spec/lib/bitbucket/connection_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Bitbucket::Connection do
diff --git a/spec/lib/bitbucket/page_spec.rb b/spec/lib/bitbucket/page_spec.rb
index 04d5a0470b1..6301dd56faf 100644
--- a/spec/lib/bitbucket/page_spec.rb
+++ b/spec/lib/bitbucket/page_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Bitbucket::Page do
diff --git a/spec/lib/bitbucket/paginator_spec.rb b/spec/lib/bitbucket/paginator_spec.rb
index bdf10a5e2a2..a1effa14000 100644
--- a/spec/lib/bitbucket/paginator_spec.rb
+++ b/spec/lib/bitbucket/paginator_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Bitbucket::Paginator do
diff --git a/spec/lib/bitbucket/representation/comment_spec.rb b/spec/lib/bitbucket/representation/comment_spec.rb
index fec243a9f96..2dcc933ee61 100644
--- a/spec/lib/bitbucket/representation/comment_spec.rb
+++ b/spec/lib/bitbucket/representation/comment_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Bitbucket::Representation::Comment do
diff --git a/spec/lib/bitbucket/representation/issue_spec.rb b/spec/lib/bitbucket/representation/issue_spec.rb
index 20f47224aa8..c7d1ebdd597 100644
--- a/spec/lib/bitbucket/representation/issue_spec.rb
+++ b/spec/lib/bitbucket/representation/issue_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Bitbucket::Representation::Issue do
diff --git a/spec/lib/bitbucket/representation/pull_request_comment_spec.rb b/spec/lib/bitbucket/representation/pull_request_comment_spec.rb
index 673dcf22ce8..151055f510f 100644
--- a/spec/lib/bitbucket/representation/pull_request_comment_spec.rb
+++ b/spec/lib/bitbucket/representation/pull_request_comment_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Bitbucket::Representation::PullRequestComment do
diff --git a/spec/lib/bitbucket/representation/pull_request_spec.rb b/spec/lib/bitbucket/representation/pull_request_spec.rb
index 30453528be4..7cf43b2b6fd 100644
--- a/spec/lib/bitbucket/representation/pull_request_spec.rb
+++ b/spec/lib/bitbucket/representation/pull_request_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Bitbucket::Representation::PullRequest do
diff --git a/spec/lib/bitbucket/representation/repo_spec.rb b/spec/lib/bitbucket/representation/repo_spec.rb
index 405265cc669..a272695e681 100644
--- a/spec/lib/bitbucket/representation/repo_spec.rb
+++ b/spec/lib/bitbucket/representation/repo_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Bitbucket::Representation::Repo do
diff --git a/spec/lib/bitbucket/representation/user_spec.rb b/spec/lib/bitbucket/representation/user_spec.rb
index f79ff4edb7b..0169887a24c 100644
--- a/spec/lib/bitbucket/representation/user_spec.rb
+++ b/spec/lib/bitbucket/representation/user_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Bitbucket::Representation::User do
diff --git a/spec/lib/bitbucket_server/client_spec.rb b/spec/lib/bitbucket_server/client_spec.rb
index 4f0d57ca8a6..988710b7c4d 100644
--- a/spec/lib/bitbucket_server/client_spec.rb
+++ b/spec/lib/bitbucket_server/client_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe BitbucketServer::Client do
diff --git a/spec/lib/bitbucket_server/connection_spec.rb b/spec/lib/bitbucket_server/connection_spec.rb
index ab8a5b89608..3a7fe4e7321 100644
--- a/spec/lib/bitbucket_server/connection_spec.rb
+++ b/spec/lib/bitbucket_server/connection_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe BitbucketServer::Connection do
diff --git a/spec/lib/bitbucket_server/page_spec.rb b/spec/lib/bitbucket_server/page_spec.rb
index cf419a9045b..2da1d0995ca 100644
--- a/spec/lib/bitbucket_server/page_spec.rb
+++ b/spec/lib/bitbucket_server/page_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe BitbucketServer::Page do
diff --git a/spec/lib/bitbucket_server/paginator_spec.rb b/spec/lib/bitbucket_server/paginator_spec.rb
index eadd7f68bfb..e01cbeb4270 100644
--- a/spec/lib/bitbucket_server/paginator_spec.rb
+++ b/spec/lib/bitbucket_server/paginator_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe BitbucketServer::Paginator do
diff --git a/spec/lib/bitbucket_server/representation/activity_spec.rb b/spec/lib/bitbucket_server/representation/activity_spec.rb
index 15c50e40472..b548dedadfb 100644
--- a/spec/lib/bitbucket_server/representation/activity_spec.rb
+++ b/spec/lib/bitbucket_server/representation/activity_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe BitbucketServer::Representation::Activity do
diff --git a/spec/lib/bitbucket_server/representation/comment_spec.rb b/spec/lib/bitbucket_server/representation/comment_spec.rb
index 53a20a1d80a..f8c73c3da35 100644
--- a/spec/lib/bitbucket_server/representation/comment_spec.rb
+++ b/spec/lib/bitbucket_server/representation/comment_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe BitbucketServer::Representation::Comment do
diff --git a/spec/lib/bitbucket_server/representation/pull_request_comment_spec.rb b/spec/lib/bitbucket_server/representation/pull_request_comment_spec.rb
index bd7e3597486..db43e990812 100644
--- a/spec/lib/bitbucket_server/representation/pull_request_comment_spec.rb
+++ b/spec/lib/bitbucket_server/representation/pull_request_comment_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe BitbucketServer::Representation::PullRequestComment do
diff --git a/spec/lib/bitbucket_server/representation/pull_request_spec.rb b/spec/lib/bitbucket_server/representation/pull_request_spec.rb
index 4b8afdb006b..e091890041e 100644
--- a/spec/lib/bitbucket_server/representation/pull_request_spec.rb
+++ b/spec/lib/bitbucket_server/representation/pull_request_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe BitbucketServer::Representation::PullRequest do
diff --git a/spec/lib/bitbucket_server/representation/repo_spec.rb b/spec/lib/bitbucket_server/representation/repo_spec.rb
index 3ac1030fbb0..801de247d73 100644
--- a/spec/lib/bitbucket_server/representation/repo_spec.rb
+++ b/spec/lib/bitbucket_server/representation/repo_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe BitbucketServer::Representation::Repo do
diff --git a/spec/lib/constraints/feature_constrainer_spec.rb b/spec/lib/constraints/feature_constrainer_spec.rb
index 42efc164f81..0739da801a7 100644
--- a/spec/lib/constraints/feature_constrainer_spec.rb
+++ b/spec/lib/constraints/feature_constrainer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Constraints::FeatureConstrainer do
diff --git a/spec/lib/constraints/group_url_constrainer_spec.rb b/spec/lib/constraints/group_url_constrainer_spec.rb
index ff295068ba9..573de331898 100644
--- a/spec/lib/constraints/group_url_constrainer_spec.rb
+++ b/spec/lib/constraints/group_url_constrainer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Constraints::GroupUrlConstrainer do
diff --git a/spec/lib/constraints/project_url_constrainer_spec.rb b/spec/lib/constraints/project_url_constrainer_spec.rb
index 3496b01ebcc..ac3221ecab7 100644
--- a/spec/lib/constraints/project_url_constrainer_spec.rb
+++ b/spec/lib/constraints/project_url_constrainer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Constraints::ProjectUrlConstrainer do
diff --git a/spec/lib/constraints/user_url_constrainer_spec.rb b/spec/lib/constraints/user_url_constrainer_spec.rb
index e2c85bb27bb..15ef930420c 100644
--- a/spec/lib/constraints/user_url_constrainer_spec.rb
+++ b/spec/lib/constraints/user_url_constrainer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Constraints::UserUrlConstrainer do
diff --git a/spec/lib/container_registry/blob_spec.rb b/spec/lib/container_registry/blob_spec.rb
index d3fff5bad42..ba7f76cfa3b 100644
--- a/spec/lib/container_registry/blob_spec.rb
+++ b/spec/lib/container_registry/blob_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe ContainerRegistry::Blob do
diff --git a/spec/lib/container_registry/client_spec.rb b/spec/lib/container_registry/client_spec.rb
index ce06377bbbf..bc5fddd12ba 100644
--- a/spec/lib/container_registry/client_spec.rb
+++ b/spec/lib/container_registry/client_spec.rb
@@ -1,4 +1,6 @@
 # coding: utf-8
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe ContainerRegistry::Client do
diff --git a/spec/lib/container_registry/path_spec.rb b/spec/lib/container_registry/path_spec.rb
index 010deae822c..8c671b4d56d 100644
--- a/spec/lib/container_registry/path_spec.rb
+++ b/spec/lib/container_registry/path_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe ContainerRegistry::Path do
diff --git a/spec/lib/container_registry/registry_spec.rb b/spec/lib/container_registry/registry_spec.rb
index 4d6eea94bf0..7cf70a1f562 100644
--- a/spec/lib/container_registry/registry_spec.rb
+++ b/spec/lib/container_registry/registry_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe ContainerRegistry::Registry do
diff --git a/spec/lib/container_registry/tag_spec.rb b/spec/lib/container_registry/tag_spec.rb
index 65090f32f66..110f006536b 100644
--- a/spec/lib/container_registry/tag_spec.rb
+++ b/spec/lib/container_registry/tag_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe ContainerRegistry::Tag do
diff --git a/spec/lib/event_filter_spec.rb b/spec/lib/event_filter_spec.rb
index 6648e141b7a..d6eca8d85ff 100644
--- a/spec/lib/event_filter_spec.rb
+++ b/spec/lib/event_filter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe EventFilter do
diff --git a/spec/lib/expand_variables_spec.rb b/spec/lib/expand_variables_spec.rb
index 7faa0f31b68..099d7b6b67c 100644
--- a/spec/lib/expand_variables_spec.rb
+++ b/spec/lib/expand_variables_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe ExpandVariables do
diff --git a/spec/lib/extracts_path_spec.rb b/spec/lib/extracts_path_spec.rb
index 21ba72953fb..ffe7584a019 100644
--- a/spec/lib/extracts_path_spec.rb
+++ b/spec/lib/extracts_path_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe ExtractsPath do
diff --git a/spec/lib/feature/gitaly_spec.rb b/spec/lib/feature/gitaly_spec.rb
index 0e24a927d4c..4e07acf9c1a 100644
--- a/spec/lib/feature/gitaly_spec.rb
+++ b/spec/lib/feature/gitaly_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Feature::Gitaly do
diff --git a/spec/lib/feature_spec.rb b/spec/lib/feature_spec.rb
index 127463a57e8..185abacf8e7 100644
--- a/spec/lib/feature_spec.rb
+++ b/spec/lib/feature_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Feature do
diff --git a/spec/lib/file_size_validator_spec.rb b/spec/lib/file_size_validator_spec.rb
index ebd907ecb7f..87376a98c60 100644
--- a/spec/lib/file_size_validator_spec.rb
+++ b/spec/lib/file_size_validator_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe FileSizeValidator do
diff --git a/spec/lib/forever_spec.rb b/spec/lib/forever_spec.rb
index 800fa5a6ad6..9f17308241b 100644
--- a/spec/lib/forever_spec.rb
+++ b/spec/lib/forever_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Forever do
diff --git a/spec/lib/gitaly/server_spec.rb b/spec/lib/gitaly/server_spec.rb
index 34bd43cb3ab..12dfad6698d 100644
--- a/spec/lib/gitaly/server_spec.rb
+++ b/spec/lib/gitaly/server_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitaly::Server do
diff --git a/spec/lib/gitlab/action_rate_limiter_spec.rb b/spec/lib/gitlab/action_rate_limiter_spec.rb
index cf266a25819..8dbad32dfb4 100644
--- a/spec/lib/gitlab/action_rate_limiter_spec.rb
+++ b/spec/lib/gitlab/action_rate_limiter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::ActionRateLimiter, :clean_gitlab_redis_cache do
diff --git a/spec/lib/gitlab/allowable_spec.rb b/spec/lib/gitlab/allowable_spec.rb
index 9d80d480b52..4905cc4c3db 100644
--- a/spec/lib/gitlab/allowable_spec.rb
+++ b/spec/lib/gitlab/allowable_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Allowable do
diff --git a/spec/lib/gitlab/app_logger_spec.rb b/spec/lib/gitlab/app_logger_spec.rb
index c86d30ce6df..3b21104b15d 100644
--- a/spec/lib/gitlab/app_logger_spec.rb
+++ b/spec/lib/gitlab/app_logger_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::AppLogger, :request_store do
diff --git a/spec/lib/gitlab/asciidoc_spec.rb b/spec/lib/gitlab/asciidoc_spec.rb
index cbd4a509a55..7c65525b8dc 100644
--- a/spec/lib/gitlab/asciidoc_spec.rb
+++ b/spec/lib/gitlab/asciidoc_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'nokogiri'
 
diff --git a/spec/lib/gitlab/auth/activity_spec.rb b/spec/lib/gitlab/auth/activity_spec.rb
index 07854cb1eba..e03fafe3826 100644
--- a/spec/lib/gitlab/auth/activity_spec.rb
+++ b/spec/lib/gitlab/auth/activity_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 
 describe Gitlab::Auth::Activity do
diff --git a/spec/lib/gitlab/auth/blocked_user_tracker_spec.rb b/spec/lib/gitlab/auth/blocked_user_tracker_spec.rb
index f39863fdda1..52849f8c172 100644
--- a/spec/lib/gitlab/auth/blocked_user_tracker_spec.rb
+++ b/spec/lib/gitlab/auth/blocked_user_tracker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth::BlockedUserTracker do
diff --git a/spec/lib/gitlab/auth/ldap/access_spec.rb b/spec/lib/gitlab/auth/ldap/access_spec.rb
index 662f899180b..ecdd5b29986 100644
--- a/spec/lib/gitlab/auth/ldap/access_spec.rb
+++ b/spec/lib/gitlab/auth/ldap/access_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth::LDAP::Access do
diff --git a/spec/lib/gitlab/auth/ldap/adapter_spec.rb b/spec/lib/gitlab/auth/ldap/adapter_spec.rb
index 3eeaf3862f6..54486913b72 100644
--- a/spec/lib/gitlab/auth/ldap/adapter_spec.rb
+++ b/spec/lib/gitlab/auth/ldap/adapter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth::LDAP::Adapter do
diff --git a/spec/lib/gitlab/auth/ldap/authentication_spec.rb b/spec/lib/gitlab/auth/ldap/authentication_spec.rb
index 111572d043b..e68e83e4617 100644
--- a/spec/lib/gitlab/auth/ldap/authentication_spec.rb
+++ b/spec/lib/gitlab/auth/ldap/authentication_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth::LDAP::Authentication do
diff --git a/spec/lib/gitlab/auth/ldap/config_spec.rb b/spec/lib/gitlab/auth/ldap/config_spec.rb
index b91a09e3137..577dfe51949 100644
--- a/spec/lib/gitlab/auth/ldap/config_spec.rb
+++ b/spec/lib/gitlab/auth/ldap/config_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth::LDAP::Config do
diff --git a/spec/lib/gitlab/auth/ldap/dn_spec.rb b/spec/lib/gitlab/auth/ldap/dn_spec.rb
index f2983a02602..63656efba29 100644
--- a/spec/lib/gitlab/auth/ldap/dn_spec.rb
+++ b/spec/lib/gitlab/auth/ldap/dn_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth::LDAP::DN do
diff --git a/spec/lib/gitlab/auth/ldap/user_spec.rb b/spec/lib/gitlab/auth/ldap/user_spec.rb
index 44bb9d20e47..bc09de7b525 100644
--- a/spec/lib/gitlab/auth/ldap/user_spec.rb
+++ b/spec/lib/gitlab/auth/ldap/user_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth::LDAP::User do
diff --git a/spec/lib/gitlab/auth/o_auth/auth_hash_spec.rb b/spec/lib/gitlab/auth/o_auth/auth_hash_spec.rb
index a5436149818..25532b7a68a 100644
--- a/spec/lib/gitlab/auth/o_auth/auth_hash_spec.rb
+++ b/spec/lib/gitlab/auth/o_auth/auth_hash_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth::OAuth::AuthHash do
diff --git a/spec/lib/gitlab/auth/o_auth/identity_linker_spec.rb b/spec/lib/gitlab/auth/o_auth/identity_linker_spec.rb
index bf810d72f0e..45c1baa4089 100644
--- a/spec/lib/gitlab/auth/o_auth/identity_linker_spec.rb
+++ b/spec/lib/gitlab/auth/o_auth/identity_linker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth::OAuth::IdentityLinker do
diff --git a/spec/lib/gitlab/auth/o_auth/provider_spec.rb b/spec/lib/gitlab/auth/o_auth/provider_spec.rb
index 80d702cf9dc..f46f9d76a1e 100644
--- a/spec/lib/gitlab/auth/o_auth/provider_spec.rb
+++ b/spec/lib/gitlab/auth/o_auth/provider_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth::OAuth::Provider do
diff --git a/spec/lib/gitlab/auth/o_auth/user_spec.rb b/spec/lib/gitlab/auth/o_auth/user_spec.rb
index b765c265e69..a9b15c411dc 100644
--- a/spec/lib/gitlab/auth/o_auth/user_spec.rb
+++ b/spec/lib/gitlab/auth/o_auth/user_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth::OAuth::User do
diff --git a/spec/lib/gitlab/auth/request_authenticator_spec.rb b/spec/lib/gitlab/auth/request_authenticator_spec.rb
index 3d979132880..f7fff389d88 100644
--- a/spec/lib/gitlab/auth/request_authenticator_spec.rb
+++ b/spec/lib/gitlab/auth/request_authenticator_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth::RequestAuthenticator do
diff --git a/spec/lib/gitlab/auth/saml/auth_hash_spec.rb b/spec/lib/gitlab/auth/saml/auth_hash_spec.rb
index 3620e1afe25..13636a495d1 100644
--- a/spec/lib/gitlab/auth/saml/auth_hash_spec.rb
+++ b/spec/lib/gitlab/auth/saml/auth_hash_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth::Saml::AuthHash do
diff --git a/spec/lib/gitlab/auth/saml/identity_linker_spec.rb b/spec/lib/gitlab/auth/saml/identity_linker_spec.rb
index f3305d574cc..89118ff05ba 100644
--- a/spec/lib/gitlab/auth/saml/identity_linker_spec.rb
+++ b/spec/lib/gitlab/auth/saml/identity_linker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth::Saml::IdentityLinker do
diff --git a/spec/lib/gitlab/auth/saml/user_spec.rb b/spec/lib/gitlab/auth/saml/user_spec.rb
index c523f5e177f..5546438b7ee 100644
--- a/spec/lib/gitlab/auth/saml/user_spec.rb
+++ b/spec/lib/gitlab/auth/saml/user_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth::Saml::User do
diff --git a/spec/lib/gitlab/auth/unique_ips_limiter_spec.rb b/spec/lib/gitlab/auth/unique_ips_limiter_spec.rb
index 22708687a56..ebf7de9c701 100644
--- a/spec/lib/gitlab/auth/unique_ips_limiter_spec.rb
+++ b/spec/lib/gitlab/auth/unique_ips_limiter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth::UniqueIpsLimiter, :clean_gitlab_redis_shared_state do
diff --git a/spec/lib/gitlab/auth/user_access_denied_reason_spec.rb b/spec/lib/gitlab/auth/user_access_denied_reason_spec.rb
index 002ce776be9..8ec19c454d8 100644
--- a/spec/lib/gitlab/auth/user_access_denied_reason_spec.rb
+++ b/spec/lib/gitlab/auth/user_access_denied_reason_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth::UserAccessDeniedReason do
diff --git a/spec/lib/gitlab/auth/user_auth_finders_spec.rb b/spec/lib/gitlab/auth/user_auth_finders_spec.rb
index 4751f880cee..41265da97a4 100644
--- a/spec/lib/gitlab/auth/user_auth_finders_spec.rb
+++ b/spec/lib/gitlab/auth/user_auth_finders_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth::UserAuthFinders do
diff --git a/spec/lib/gitlab/auth_spec.rb b/spec/lib/gitlab/auth_spec.rb
index 0403830f700..edff38f05ec 100644
--- a/spec/lib/gitlab/auth_spec.rb
+++ b/spec/lib/gitlab/auth_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Auth do
diff --git a/spec/lib/gitlab/background_migration/add_merge_request_diff_commits_count_spec.rb b/spec/lib/gitlab/background_migration/add_merge_request_diff_commits_count_spec.rb
index c43ed72038e..e299e2a366f 100644
--- a/spec/lib/gitlab/background_migration/add_merge_request_diff_commits_count_spec.rb
+++ b/spec/lib/gitlab/background_migration/add_merge_request_diff_commits_count_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::BackgroundMigration::AddMergeRequestDiffCommitsCount, :migration, schema: 20180105212544 do
diff --git a/spec/lib/gitlab/background_migration/archive_legacy_traces_spec.rb b/spec/lib/gitlab/background_migration/archive_legacy_traces_spec.rb
index 877c061d11b..2a7cffb2f3e 100644
--- a/spec/lib/gitlab/background_migration/archive_legacy_traces_spec.rb
+++ b/spec/lib/gitlab/background_migration/archive_legacy_traces_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::BackgroundMigration::ArchiveLegacyTraces, :migration, schema: 20180529152628 do
diff --git a/spec/lib/gitlab/background_migration/encrypt_columns_spec.rb b/spec/lib/gitlab/background_migration/encrypt_columns_spec.rb
index 1d9bac79dcd..3c2ed6d3a6d 100644
--- a/spec/lib/gitlab/background_migration/encrypt_columns_spec.rb
+++ b/spec/lib/gitlab/background_migration/encrypt_columns_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::BackgroundMigration::EncryptColumns, :migration, schema: 20180910115836 do
diff --git a/spec/lib/gitlab/background_migration/encrypt_runners_tokens_spec.rb b/spec/lib/gitlab/background_migration/encrypt_runners_tokens_spec.rb
index 9d4921968b3..54af9807e7b 100644
--- a/spec/lib/gitlab/background_migration/encrypt_runners_tokens_spec.rb
+++ b/spec/lib/gitlab/background_migration/encrypt_runners_tokens_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::BackgroundMigration::EncryptRunnersTokens, :migration, schema: 20181121111200 do
diff --git a/spec/lib/gitlab/background_migration/fix_cross_project_label_links_spec.rb b/spec/lib/gitlab/background_migration/fix_cross_project_label_links_spec.rb
index 20af63bc6c8..7d1aacb6393 100644
--- a/spec/lib/gitlab/background_migration/fix_cross_project_label_links_spec.rb
+++ b/spec/lib/gitlab/background_migration/fix_cross_project_label_links_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::BackgroundMigration::FixCrossProjectLabelLinks, :migration, schema: 20180702120647 do
diff --git a/spec/lib/gitlab/background_migration/migrate_build_stage_spec.rb b/spec/lib/gitlab/background_migration/migrate_build_stage_spec.rb
index 582396275ed..a496f8416bf 100644
--- a/spec/lib/gitlab/background_migration/migrate_build_stage_spec.rb
+++ b/spec/lib/gitlab/background_migration/migrate_build_stage_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::BackgroundMigration::MigrateBuildStage, :migration, schema: 20180212101928 do
diff --git a/spec/lib/gitlab/background_migration/migrate_legacy_artifacts_spec.rb b/spec/lib/gitlab/background_migration/migrate_legacy_artifacts_spec.rb
index 2d1505dacfe..268626d58fd 100644
--- a/spec/lib/gitlab/background_migration/migrate_legacy_artifacts_spec.rb
+++ b/spec/lib/gitlab/background_migration/migrate_legacy_artifacts_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::BackgroundMigration::MigrateLegacyArtifacts, :migration, schema: 20180816161409 do
diff --git a/spec/lib/gitlab/background_migration/migrate_stage_index_spec.rb b/spec/lib/gitlab/background_migration/migrate_stage_index_spec.rb
index 4db829b1e7b..1a8b0355fd9 100644
--- a/spec/lib/gitlab/background_migration/migrate_stage_index_spec.rb
+++ b/spec/lib/gitlab/background_migration/migrate_stage_index_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::BackgroundMigration::MigrateStageIndex, :migration, schema: 20180420080616 do
diff --git a/spec/lib/gitlab/background_migration/populate_untracked_uploads_dependencies/untracked_file_spec.rb b/spec/lib/gitlab/background_migration/populate_untracked_uploads_dependencies/untracked_file_spec.rb
index c76adcbe2f5..ea1eaa6417d 100644
--- a/spec/lib/gitlab/background_migration/populate_untracked_uploads_dependencies/untracked_file_spec.rb
+++ b/spec/lib/gitlab/background_migration/populate_untracked_uploads_dependencies/untracked_file_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 # Rollback DB to 10.5 (later than this was originally written for) because it still needs to work.
diff --git a/spec/lib/gitlab/background_migration/populate_untracked_uploads_spec.rb b/spec/lib/gitlab/background_migration/populate_untracked_uploads_spec.rb
index 0d2074eed22..44f537ca8dd 100644
--- a/spec/lib/gitlab/background_migration/populate_untracked_uploads_spec.rb
+++ b/spec/lib/gitlab/background_migration/populate_untracked_uploads_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 # Rollback DB to 10.5 (later than this was originally written for) because it still needs to work.
diff --git a/spec/lib/gitlab/background_migration/prepare_untracked_uploads_spec.rb b/spec/lib/gitlab/background_migration/prepare_untracked_uploads_spec.rb
index 35750d89c35..591368ee98e 100644
--- a/spec/lib/gitlab/background_migration/prepare_untracked_uploads_spec.rb
+++ b/spec/lib/gitlab/background_migration/prepare_untracked_uploads_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 # Rollback DB to 10.5 (later than this was originally written for) because it still needs to work.
diff --git a/spec/lib/gitlab/background_migration/schedule_calculate_wiki_sizes_spec.rb b/spec/lib/gitlab/background_migration/schedule_calculate_wiki_sizes_spec.rb
index d494ce68c5b..f877e8cc1b8 100644
--- a/spec/lib/gitlab/background_migration/schedule_calculate_wiki_sizes_spec.rb
+++ b/spec/lib/gitlab/background_migration/schedule_calculate_wiki_sizes_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require Rails.root.join('db', 'post_migrate', '20190527194900_schedule_calculate_wiki_sizes.rb')
 
diff --git a/spec/lib/gitlab/background_migration/set_confidential_note_events_on_services_spec.rb b/spec/lib/gitlab/background_migration/set_confidential_note_events_on_services_spec.rb
index 6f3fb994f17..3600755ada7 100644
--- a/spec/lib/gitlab/background_migration/set_confidential_note_events_on_services_spec.rb
+++ b/spec/lib/gitlab/background_migration/set_confidential_note_events_on_services_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::BackgroundMigration::SetConfidentialNoteEventsOnServices, :migration, schema: 20180122154930 do
diff --git a/spec/lib/gitlab/background_migration/set_confidential_note_events_on_webhooks_spec.rb b/spec/lib/gitlab/background_migration/set_confidential_note_events_on_webhooks_spec.rb
index 82b484b7d5b..5cd9c02fd3f 100644
--- a/spec/lib/gitlab/background_migration/set_confidential_note_events_on_webhooks_spec.rb
+++ b/spec/lib/gitlab/background_migration/set_confidential_note_events_on_webhooks_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::BackgroundMigration::SetConfidentialNoteEventsOnWebhooks, :migration, schema: 20180104131052 do
diff --git a/spec/lib/gitlab/background_migration_spec.rb b/spec/lib/gitlab/background_migration_spec.rb
index 1d0ffb5e9df..8960ac706e6 100644
--- a/spec/lib/gitlab/background_migration_spec.rb
+++ b/spec/lib/gitlab/background_migration_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::BackgroundMigration do
diff --git a/spec/lib/gitlab/badge/coverage/metadata_spec.rb b/spec/lib/gitlab/badge/coverage/metadata_spec.rb
index 74eaf7eaf8b..2b87508bdef 100644
--- a/spec/lib/gitlab/badge/coverage/metadata_spec.rb
+++ b/spec/lib/gitlab/badge/coverage/metadata_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'lib/gitlab/badge/shared/metadata'
 
diff --git a/spec/lib/gitlab/badge/coverage/report_spec.rb b/spec/lib/gitlab/badge/coverage/report_spec.rb
index da789bf3705..eee3f96ab85 100644
--- a/spec/lib/gitlab/badge/coverage/report_spec.rb
+++ b/spec/lib/gitlab/badge/coverage/report_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Badge::Coverage::Report do
diff --git a/spec/lib/gitlab/badge/coverage/template_spec.rb b/spec/lib/gitlab/badge/coverage/template_spec.rb
index d9c21a22590..b51d707a61d 100644
--- a/spec/lib/gitlab/badge/coverage/template_spec.rb
+++ b/spec/lib/gitlab/badge/coverage/template_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Badge::Coverage::Template do
diff --git a/spec/lib/gitlab/badge/pipeline/metadata_spec.rb b/spec/lib/gitlab/badge/pipeline/metadata_spec.rb
index 9032a8e9016..b096803f921 100644
--- a/spec/lib/gitlab/badge/pipeline/metadata_spec.rb
+++ b/spec/lib/gitlab/badge/pipeline/metadata_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'lib/gitlab/badge/shared/metadata'
 
diff --git a/spec/lib/gitlab/badge/pipeline/status_spec.rb b/spec/lib/gitlab/badge/pipeline/status_spec.rb
index dc835375c66..684c6829879 100644
--- a/spec/lib/gitlab/badge/pipeline/status_spec.rb
+++ b/spec/lib/gitlab/badge/pipeline/status_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Badge::Pipeline::Status do
diff --git a/spec/lib/gitlab/badge/pipeline/template_spec.rb b/spec/lib/gitlab/badge/pipeline/template_spec.rb
index bcef0b7e120..c0aaa3d73e1 100644
--- a/spec/lib/gitlab/badge/pipeline/template_spec.rb
+++ b/spec/lib/gitlab/badge/pipeline/template_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Badge::Pipeline::Template do
diff --git a/spec/lib/gitlab/badge/shared/metadata.rb b/spec/lib/gitlab/badge/shared/metadata.rb
index 63c7ca5a915..809fa54db02 100644
--- a/spec/lib/gitlab/badge/shared/metadata.rb
+++ b/spec/lib/gitlab/badge/shared/metadata.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 shared_examples 'badge metadata' do
   describe '#to_html' do
     let(:html) { Nokogiri::HTML.parse(metadata.to_html) }
diff --git a/spec/lib/gitlab/bare_repository_import/importer_spec.rb b/spec/lib/gitlab/bare_repository_import/importer_spec.rb
index f4759b69538..6fb95b4d3a2 100644
--- a/spec/lib/gitlab/bare_repository_import/importer_spec.rb
+++ b/spec/lib/gitlab/bare_repository_import/importer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::BareRepositoryImport::Importer, :seed_helper do
diff --git a/spec/lib/gitlab/bare_repository_import/repository_spec.rb b/spec/lib/gitlab/bare_repository_import/repository_spec.rb
index a07c5371134..0607e2232a1 100644
--- a/spec/lib/gitlab/bare_repository_import/repository_spec.rb
+++ b/spec/lib/gitlab/bare_repository_import/repository_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe ::Gitlab::BareRepositoryImport::Repository do
diff --git a/spec/lib/gitlab/bitbucket_import/importer_spec.rb b/spec/lib/gitlab/bitbucket_import/importer_spec.rb
index 35700e0b588..62b688d4d3e 100644
--- a/spec/lib/gitlab/bitbucket_import/importer_spec.rb
+++ b/spec/lib/gitlab/bitbucket_import/importer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::BitbucketImport::Importer do
diff --git a/spec/lib/gitlab/bitbucket_import/project_creator_spec.rb b/spec/lib/gitlab/bitbucket_import/project_creator_spec.rb
index e2bee22cf1f..0dd8547a925 100644
--- a/spec/lib/gitlab/bitbucket_import/project_creator_spec.rb
+++ b/spec/lib/gitlab/bitbucket_import/project_creator_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::BitbucketImport::ProjectCreator do
diff --git a/spec/lib/gitlab/bitbucket_import/wiki_formatter_spec.rb b/spec/lib/gitlab/bitbucket_import/wiki_formatter_spec.rb
index 795fd069ab2..7b5c7847f2d 100644
--- a/spec/lib/gitlab/bitbucket_import/wiki_formatter_spec.rb
+++ b/spec/lib/gitlab/bitbucket_import/wiki_formatter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::BitbucketImport::WikiFormatter do
diff --git a/spec/lib/gitlab/bitbucket_server_import/importer_spec.rb b/spec/lib/gitlab/bitbucket_server_import/importer_spec.rb
index cc09804fd53..8ab7b2c5fa7 100644
--- a/spec/lib/gitlab/bitbucket_server_import/importer_spec.rb
+++ b/spec/lib/gitlab/bitbucket_server_import/importer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::BitbucketServerImport::Importer do
diff --git a/spec/lib/gitlab/blame_spec.rb b/spec/lib/gitlab/blame_spec.rb
index 7cab04e9fc9..e1afd5b25bb 100644
--- a/spec/lib/gitlab/blame_spec.rb
+++ b/spec/lib/gitlab/blame_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Blame do
diff --git a/spec/lib/gitlab/build_access_spec.rb b/spec/lib/gitlab/build_access_spec.rb
index 08f50bf4fac..b7af8ace5b5 100644
--- a/spec/lib/gitlab/build_access_spec.rb
+++ b/spec/lib/gitlab/build_access_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::BuildAccess do
diff --git a/spec/lib/gitlab/cache/ci/project_pipeline_status_spec.rb b/spec/lib/gitlab/cache/ci/project_pipeline_status_spec.rb
index 483c5ea9cff..91e7edaf704 100644
--- a/spec/lib/gitlab/cache/ci/project_pipeline_status_spec.rb
+++ b/spec/lib/gitlab/cache/ci/project_pipeline_status_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Cache::Ci::ProjectPipelineStatus, :clean_gitlab_redis_cache do
diff --git a/spec/lib/gitlab/cache/request_cache_spec.rb b/spec/lib/gitlab/cache/request_cache_spec.rb
index 5b82c216a13..70a7f090d0a 100644
--- a/spec/lib/gitlab/cache/request_cache_spec.rb
+++ b/spec/lib/gitlab/cache/request_cache_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Cache::RequestCache do
diff --git a/spec/lib/gitlab/changes_list_spec.rb b/spec/lib/gitlab/changes_list_spec.rb
index 464508fcd73..911450f3a8b 100644
--- a/spec/lib/gitlab/changes_list_spec.rb
+++ b/spec/lib/gitlab/changes_list_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "spec_helper"
 
 describe Gitlab::ChangesList do
diff --git a/spec/lib/gitlab/chat_name_token_spec.rb b/spec/lib/gitlab/chat_name_token_spec.rb
index 1e9fb9077fc..b2d4a466021 100644
--- a/spec/lib/gitlab/chat_name_token_spec.rb
+++ b/spec/lib/gitlab/chat_name_token_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::ChatNameToken do
diff --git a/spec/lib/gitlab/chat_spec.rb b/spec/lib/gitlab/chat_spec.rb
index d61c4b36668..08cc16314c5 100644
--- a/spec/lib/gitlab/chat_spec.rb
+++ b/spec/lib/gitlab/chat_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Chat, :use_clean_rails_memory_store_caching do
diff --git a/spec/lib/gitlab/checks/change_access_spec.rb b/spec/lib/gitlab/checks/change_access_spec.rb
index 45fb33e9e4a..3a8e8f67e16 100644
--- a/spec/lib/gitlab/checks/change_access_spec.rb
+++ b/spec/lib/gitlab/checks/change_access_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Checks::ChangeAccess do
diff --git a/spec/lib/gitlab/checks/force_push_spec.rb b/spec/lib/gitlab/checks/force_push_spec.rb
index 0e0788ce974..9432be083d3 100644
--- a/spec/lib/gitlab/checks/force_push_spec.rb
+++ b/spec/lib/gitlab/checks/force_push_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Checks::ForcePush do
diff --git a/spec/lib/gitlab/checks/lfs_integrity_spec.rb b/spec/lib/gitlab/checks/lfs_integrity_spec.rb
index 887ea8fc1e0..88e8f5d74d1 100644
--- a/spec/lib/gitlab/checks/lfs_integrity_spec.rb
+++ b/spec/lib/gitlab/checks/lfs_integrity_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Checks::LfsIntegrity do
diff --git a/spec/lib/gitlab/checks/project_created_spec.rb b/spec/lib/gitlab/checks/project_created_spec.rb
index ac02007e111..14cb5e6ec66 100644
--- a/spec/lib/gitlab/checks/project_created_spec.rb
+++ b/spec/lib/gitlab/checks/project_created_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Gitlab::Checks::ProjectCreated, :clean_gitlab_redis_shared_state do
diff --git a/spec/lib/gitlab/checks/project_moved_spec.rb b/spec/lib/gitlab/checks/project_moved_spec.rb
index 8e9386b1ba1..3ca977aa48d 100644
--- a/spec/lib/gitlab/checks/project_moved_spec.rb
+++ b/spec/lib/gitlab/checks/project_moved_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Gitlab::Checks::ProjectMoved, :clean_gitlab_redis_shared_state do
diff --git a/spec/lib/gitlab/ci/ansi2html_spec.rb b/spec/lib/gitlab/ci/ansi2html_spec.rb
index 3d57ce431ab..651fdaaabca 100644
--- a/spec/lib/gitlab/ci/ansi2html_spec.rb
+++ b/spec/lib/gitlab/ci/ansi2html_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Ansi2html do
diff --git a/spec/lib/gitlab/ci/build/artifacts/adapters/gzip_stream_spec.rb b/spec/lib/gitlab/ci/build/artifacts/adapters/gzip_stream_spec.rb
index 987c6b37aaa..cec3e70bb9f 100644
--- a/spec/lib/gitlab/ci/build/artifacts/adapters/gzip_stream_spec.rb
+++ b/spec/lib/gitlab/ci/build/artifacts/adapters/gzip_stream_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Build::Artifacts::Adapters::GzipStream do
diff --git a/spec/lib/gitlab/ci/build/artifacts/adapters/raw_stream_spec.rb b/spec/lib/gitlab/ci/build/artifacts/adapters/raw_stream_spec.rb
index ec2dd724b45..66a234232e1 100644
--- a/spec/lib/gitlab/ci/build/artifacts/adapters/raw_stream_spec.rb
+++ b/spec/lib/gitlab/ci/build/artifacts/adapters/raw_stream_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Build::Artifacts::Adapters::RawStream do
diff --git a/spec/lib/gitlab/ci/build/artifacts/metadata/entry_spec.rb b/spec/lib/gitlab/ci/build/artifacts/metadata/entry_spec.rb
index 3b905611467..24d17eb0fb3 100644
--- a/spec/lib/gitlab/ci/build/artifacts/metadata/entry_spec.rb
+++ b/spec/lib/gitlab/ci/build/artifacts/metadata/entry_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Build::Artifacts::Metadata::Entry do
diff --git a/spec/lib/gitlab/ci/build/artifacts/metadata_spec.rb b/spec/lib/gitlab/ci/build/artifacts/metadata_spec.rb
index a9a4af1f455..ff189c4701e 100644
--- a/spec/lib/gitlab/ci/build/artifacts/metadata_spec.rb
+++ b/spec/lib/gitlab/ci/build/artifacts/metadata_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Build::Artifacts::Metadata do
diff --git a/spec/lib/gitlab/ci/build/artifacts/path_spec.rb b/spec/lib/gitlab/ci/build/artifacts/path_spec.rb
index 7bd6a2ead25..7bbef0f5197 100644
--- a/spec/lib/gitlab/ci/build/artifacts/path_spec.rb
+++ b/spec/lib/gitlab/ci/build/artifacts/path_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Build::Artifacts::Path do
diff --git a/spec/lib/gitlab/ci/build/credentials/factory_spec.rb b/spec/lib/gitlab/ci/build/credentials/factory_spec.rb
index d53db05e5e6..9148c0d579e 100644
--- a/spec/lib/gitlab/ci/build/credentials/factory_spec.rb
+++ b/spec/lib/gitlab/ci/build/credentials/factory_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Build::Credentials::Factory do
diff --git a/spec/lib/gitlab/ci/build/credentials/registry_spec.rb b/spec/lib/gitlab/ci/build/credentials/registry_spec.rb
index c6054138cde..552580dcbbe 100644
--- a/spec/lib/gitlab/ci/build/credentials/registry_spec.rb
+++ b/spec/lib/gitlab/ci/build/credentials/registry_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Build::Credentials::Registry do
diff --git a/spec/lib/gitlab/ci/build/image_spec.rb b/spec/lib/gitlab/ci/build/image_spec.rb
index 6e20e0ef5c3..04bab9c58b8 100644
--- a/spec/lib/gitlab/ci/build/image_spec.rb
+++ b/spec/lib/gitlab/ci/build/image_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Build::Image do
diff --git a/spec/lib/gitlab/ci/build/policy/changes_spec.rb b/spec/lib/gitlab/ci/build/policy/changes_spec.rb
index 92cf0376c02..48ac2e4e657 100644
--- a/spec/lib/gitlab/ci/build/policy/changes_spec.rb
+++ b/spec/lib/gitlab/ci/build/policy/changes_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Build::Policy::Changes do
diff --git a/spec/lib/gitlab/ci/build/policy/kubernetes_spec.rb b/spec/lib/gitlab/ci/build/policy/kubernetes_spec.rb
index 4510b82ca9d..bc2e6fe6b8d 100644
--- a/spec/lib/gitlab/ci/build/policy/kubernetes_spec.rb
+++ b/spec/lib/gitlab/ci/build/policy/kubernetes_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Build::Policy::Kubernetes do
diff --git a/spec/lib/gitlab/ci/build/policy/refs_spec.rb b/spec/lib/gitlab/ci/build/policy/refs_spec.rb
index 22ca681cfd3..43c5d3ec980 100644
--- a/spec/lib/gitlab/ci/build/policy/refs_spec.rb
+++ b/spec/lib/gitlab/ci/build/policy/refs_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Build::Policy::Refs do
diff --git a/spec/lib/gitlab/ci/build/policy/variables_spec.rb b/spec/lib/gitlab/ci/build/policy/variables_spec.rb
index 9b016901a20..42a2a9fda2e 100644
--- a/spec/lib/gitlab/ci/build/policy/variables_spec.rb
+++ b/spec/lib/gitlab/ci/build/policy/variables_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Build::Policy::Variables do
diff --git a/spec/lib/gitlab/ci/build/policy_spec.rb b/spec/lib/gitlab/ci/build/policy_spec.rb
index 20ee3dd3e89..80d7b2e9dc8 100644
--- a/spec/lib/gitlab/ci/build/policy_spec.rb
+++ b/spec/lib/gitlab/ci/build/policy_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Build::Policy do
diff --git a/spec/lib/gitlab/ci/build/step_spec.rb b/spec/lib/gitlab/ci/build/step_spec.rb
index e3136fc925e..84e6e0e177f 100644
--- a/spec/lib/gitlab/ci/build/step_spec.rb
+++ b/spec/lib/gitlab/ci/build/step_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Build::Step do
diff --git a/spec/lib/gitlab/ci/charts_spec.rb b/spec/lib/gitlab/ci/charts_spec.rb
index 1668d3bbaac..cfb7a3f72fa 100644
--- a/spec/lib/gitlab/ci/charts_spec.rb
+++ b/spec/lib/gitlab/ci/charts_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Charts do
diff --git a/spec/lib/gitlab/ci/config/entry/artifacts_spec.rb b/spec/lib/gitlab/ci/config/entry/artifacts_spec.rb
index bd1f2c92844..a7f457e0f5e 100644
--- a/spec/lib/gitlab/ci/config/entry/artifacts_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/artifacts_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Artifacts do
diff --git a/spec/lib/gitlab/ci/config/entry/cache_spec.rb b/spec/lib/gitlab/ci/config/entry/cache_spec.rb
index 8f711e02f9b..4cb63168ec7 100644
--- a/spec/lib/gitlab/ci/config/entry/cache_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/cache_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Cache do
diff --git a/spec/lib/gitlab/ci/config/entry/commands_spec.rb b/spec/lib/gitlab/ci/config/entry/commands_spec.rb
index 8934aeb83db..269a3406913 100644
--- a/spec/lib/gitlab/ci/config/entry/commands_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/commands_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Commands do
diff --git a/spec/lib/gitlab/ci/config/entry/coverage_spec.rb b/spec/lib/gitlab/ci/config/entry/coverage_spec.rb
index 4c6bd859552..48d0864cfca 100644
--- a/spec/lib/gitlab/ci/config/entry/coverage_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/coverage_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Coverage do
diff --git a/spec/lib/gitlab/ci/config/entry/default_spec.rb b/spec/lib/gitlab/ci/config/entry/default_spec.rb
index a901dd80c2c..27d63dbd407 100644
--- a/spec/lib/gitlab/ci/config/entry/default_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/default_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Default do
diff --git a/spec/lib/gitlab/ci/config/entry/environment_spec.rb b/spec/lib/gitlab/ci/config/entry/environment_spec.rb
index 0bc9e8bd3cd..7b72b45fd8d 100644
--- a/spec/lib/gitlab/ci/config/entry/environment_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/environment_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Environment do
diff --git a/spec/lib/gitlab/ci/config/entry/hidden_spec.rb b/spec/lib/gitlab/ci/config/entry/hidden_spec.rb
index c88ee10550c..40b73352676 100644
--- a/spec/lib/gitlab/ci/config/entry/hidden_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/hidden_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Hidden do
diff --git a/spec/lib/gitlab/ci/config/entry/image_spec.rb b/spec/lib/gitlab/ci/config/entry/image_spec.rb
index 1ebdda398b9..8de2e5de724 100644
--- a/spec/lib/gitlab/ci/config/entry/image_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/image_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Image do
diff --git a/spec/lib/gitlab/ci/config/entry/job_spec.rb b/spec/lib/gitlab/ci/config/entry/job_spec.rb
index 25766d34c65..d5861d5dd07 100644
--- a/spec/lib/gitlab/ci/config/entry/job_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/job_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Job do
diff --git a/spec/lib/gitlab/ci/config/entry/jobs_spec.rb b/spec/lib/gitlab/ci/config/entry/jobs_spec.rb
index 3e4137930dc..61c8956d41f 100644
--- a/spec/lib/gitlab/ci/config/entry/jobs_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/jobs_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Jobs do
diff --git a/spec/lib/gitlab/ci/config/entry/key_spec.rb b/spec/lib/gitlab/ci/config/entry/key_spec.rb
index 3cbf19bea8b..a7874447725 100644
--- a/spec/lib/gitlab/ci/config/entry/key_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/key_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Key do
diff --git a/spec/lib/gitlab/ci/config/entry/paths_spec.rb b/spec/lib/gitlab/ci/config/entry/paths_spec.rb
index 1d9c5ddee9b..221d5ae5863 100644
--- a/spec/lib/gitlab/ci/config/entry/paths_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/paths_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Paths do
diff --git a/spec/lib/gitlab/ci/config/entry/policy_spec.rb b/spec/lib/gitlab/ci/config/entry/policy_spec.rb
index fba5671594d..266a27c1e47 100644
--- a/spec/lib/gitlab/ci/config/entry/policy_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/policy_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 require 'support/helpers/stub_feature_flags'
 require_dependency 'active_model'
diff --git a/spec/lib/gitlab/ci/config/entry/reports_spec.rb b/spec/lib/gitlab/ci/config/entry/reports_spec.rb
index 38943138cbf..3c352c30e55 100644
--- a/spec/lib/gitlab/ci/config/entry/reports_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/reports_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Reports do
diff --git a/spec/lib/gitlab/ci/config/entry/retry_spec.rb b/spec/lib/gitlab/ci/config/entry/retry_spec.rb
index 164a9ed4c3d..f9efd2e014d 100644
--- a/spec/lib/gitlab/ci/config/entry/retry_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/retry_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Retry do
diff --git a/spec/lib/gitlab/ci/config/entry/root_spec.rb b/spec/lib/gitlab/ci/config/entry/root_spec.rb
index 7a252ed675a..968dbb9c7f2 100644
--- a/spec/lib/gitlab/ci/config/entry/root_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/root_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Root do
diff --git a/spec/lib/gitlab/ci/config/entry/script_spec.rb b/spec/lib/gitlab/ci/config/entry/script_spec.rb
index 069eaa26422..d523243d3b6 100644
--- a/spec/lib/gitlab/ci/config/entry/script_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/script_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Script do
diff --git a/spec/lib/gitlab/ci/config/entry/service_spec.rb b/spec/lib/gitlab/ci/config/entry/service_spec.rb
index d31866a1987..66cca100688 100644
--- a/spec/lib/gitlab/ci/config/entry/service_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/service_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Service do
diff --git a/spec/lib/gitlab/ci/config/entry/services_spec.rb b/spec/lib/gitlab/ci/config/entry/services_spec.rb
index d5a1316f665..764f783b083 100644
--- a/spec/lib/gitlab/ci/config/entry/services_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/services_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Services do
diff --git a/spec/lib/gitlab/ci/config/entry/stage_spec.rb b/spec/lib/gitlab/ci/config/entry/stage_spec.rb
index 70c8a0a355a..574fa00575a 100644
--- a/spec/lib/gitlab/ci/config/entry/stage_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/stage_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Stage do
diff --git a/spec/lib/gitlab/ci/config/entry/stages_spec.rb b/spec/lib/gitlab/ci/config/entry/stages_spec.rb
index 182c8d867c7..97970522104 100644
--- a/spec/lib/gitlab/ci/config/entry/stages_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/stages_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Stages do
diff --git a/spec/lib/gitlab/ci/config/entry/variables_spec.rb b/spec/lib/gitlab/ci/config/entry/variables_spec.rb
index 84bfef9e8ad..1320b366367 100644
--- a/spec/lib/gitlab/ci/config/entry/variables_spec.rb
+++ b/spec/lib/gitlab/ci/config/entry/variables_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config::Entry::Variables do
diff --git a/spec/lib/gitlab/ci/config/extendable/entry_spec.rb b/spec/lib/gitlab/ci/config/extendable/entry_spec.rb
index d63612053b6..e00104e3c68 100644
--- a/spec/lib/gitlab/ci/config/extendable/entry_spec.rb
+++ b/spec/lib/gitlab/ci/config/extendable/entry_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 
 describe Gitlab::Ci::Config::Extendable::Entry do
diff --git a/spec/lib/gitlab/ci/config/extendable_spec.rb b/spec/lib/gitlab/ci/config/extendable_spec.rb
index 90213f6603d..874b224067b 100644
--- a/spec/lib/gitlab/ci/config/extendable_spec.rb
+++ b/spec/lib/gitlab/ci/config/extendable_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 
 describe Gitlab::Ci::Config::Extendable do
diff --git a/spec/lib/gitlab/ci/config_spec.rb b/spec/lib/gitlab/ci/config_spec.rb
index 4e8bff3d738..986cde3540a 100644
--- a/spec/lib/gitlab/ci/config_spec.rb
+++ b/spec/lib/gitlab/ci/config_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Config do
diff --git a/spec/lib/gitlab/ci/cron_parser_spec.rb b/spec/lib/gitlab/ci/cron_parser_spec.rb
index 491e3fba9d9..af4e9d687c4 100644
--- a/spec/lib/gitlab/ci/cron_parser_spec.rb
+++ b/spec/lib/gitlab/ci/cron_parser_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::CronParser do
diff --git a/spec/lib/gitlab/ci/mask_secret_spec.rb b/spec/lib/gitlab/ci/mask_secret_spec.rb
index 3789a142248..6607aaae399 100644
--- a/spec/lib/gitlab/ci/mask_secret_spec.rb
+++ b/spec/lib/gitlab/ci/mask_secret_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::MaskSecret do
diff --git a/spec/lib/gitlab/ci/parsers/test/junit_spec.rb b/spec/lib/gitlab/ci/parsers/test/junit_spec.rb
index a49402c7398..8ff60710f67 100644
--- a/spec/lib/gitlab/ci/parsers/test/junit_spec.rb
+++ b/spec/lib/gitlab/ci/parsers/test/junit_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 
 describe Gitlab::Ci::Parsers::Test::Junit do
diff --git a/spec/lib/gitlab/ci/pipeline/chain/build_spec.rb b/spec/lib/gitlab/ci/pipeline/chain/build_spec.rb
index 50cb45c39d1..bf9ff922c05 100644
--- a/spec/lib/gitlab/ci/pipeline/chain/build_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/chain/build_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Pipeline::Chain::Build do
diff --git a/spec/lib/gitlab/ci/pipeline/chain/command_spec.rb b/spec/lib/gitlab/ci/pipeline/chain/command_spec.rb
index 5181e9c1583..5775e934cfd 100644
--- a/spec/lib/gitlab/ci/pipeline/chain/command_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/chain/command_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Pipeline::Chain::Command do
diff --git a/spec/lib/gitlab/ci/pipeline/chain/create_spec.rb b/spec/lib/gitlab/ci/pipeline/chain/create_spec.rb
index 0edc3f315bb..650ab193997 100644
--- a/spec/lib/gitlab/ci/pipeline/chain/create_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/chain/create_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Pipeline::Chain::Create do
diff --git a/spec/lib/gitlab/ci/pipeline/chain/populate_spec.rb b/spec/lib/gitlab/ci/pipeline/chain/populate_spec.rb
index 0302e4090cf..417a2d119ff 100644
--- a/spec/lib/gitlab/ci/pipeline/chain/populate_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/chain/populate_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Pipeline::Chain::Populate do
diff --git a/spec/lib/gitlab/ci/pipeline/chain/sequence_spec.rb b/spec/lib/gitlab/ci/pipeline/chain/sequence_spec.rb
index eca23694a2b..9cb59442dfd 100644
--- a/spec/lib/gitlab/ci/pipeline/chain/sequence_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/chain/sequence_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Pipeline::Chain::Sequence do
diff --git a/spec/lib/gitlab/ci/pipeline/chain/skip_spec.rb b/spec/lib/gitlab/ci/pipeline/chain/skip_spec.rb
index c7f4fc98ca3..fe46633ed1b 100644
--- a/spec/lib/gitlab/ci/pipeline/chain/skip_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/chain/skip_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Pipeline::Chain::Skip do
diff --git a/spec/lib/gitlab/ci/pipeline/chain/validate/abilities_spec.rb b/spec/lib/gitlab/ci/pipeline/chain/validate/abilities_spec.rb
index b3e58c3dfdb..ac370433955 100644
--- a/spec/lib/gitlab/ci/pipeline/chain/validate/abilities_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/chain/validate/abilities_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Pipeline::Chain::Validate::Abilities do
diff --git a/spec/lib/gitlab/ci/pipeline/chain/validate/config_spec.rb b/spec/lib/gitlab/ci/pipeline/chain/validate/config_spec.rb
index 00bbc4c817a..79acd3e4f54 100644
--- a/spec/lib/gitlab/ci/pipeline/chain/validate/config_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/chain/validate/config_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Pipeline::Chain::Validate::Config do
diff --git a/spec/lib/gitlab/ci/pipeline/chain/validate/repository_spec.rb b/spec/lib/gitlab/ci/pipeline/chain/validate/repository_spec.rb
index 2e8c9d70098..b866355906e 100644
--- a/spec/lib/gitlab/ci/pipeline/chain/validate/repository_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/chain/validate/repository_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Pipeline::Chain::Validate::Repository do
diff --git a/spec/lib/gitlab/ci/pipeline/duration_spec.rb b/spec/lib/gitlab/ci/pipeline/duration_spec.rb
index 7c9836e2da6..a4984092f35 100644
--- a/spec/lib/gitlab/ci/pipeline/duration_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/duration_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Pipeline::Duration do
diff --git a/spec/lib/gitlab/ci/pipeline/expression/lexeme/and_spec.rb b/spec/lib/gitlab/ci/pipeline/expression/lexeme/and_spec.rb
index 006ce4d8078..847d613dba3 100644
--- a/spec/lib/gitlab/ci/pipeline/expression/lexeme/and_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/expression/lexeme/and_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 require 'rspec-parameterized'
 
diff --git a/spec/lib/gitlab/ci/pipeline/expression/lexeme/equals_spec.rb b/spec/lib/gitlab/ci/pipeline/expression/lexeme/equals_spec.rb
index fcbd2863289..0e13681a4cf 100644
--- a/spec/lib/gitlab/ci/pipeline/expression/lexeme/equals_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/expression/lexeme/equals_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Pipeline::Expression::Lexeme::Equals do
diff --git a/spec/lib/gitlab/ci/pipeline/expression/lexeme/matches_spec.rb b/spec/lib/gitlab/ci/pipeline/expression/lexeme/matches_spec.rb
index a6fdec832a3..4e4f1bf6ad3 100644
--- a/spec/lib/gitlab/ci/pipeline/expression/lexeme/matches_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/expression/lexeme/matches_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 require_dependency 're2'
 
diff --git a/spec/lib/gitlab/ci/pipeline/expression/lexeme/not_equals_spec.rb b/spec/lib/gitlab/ci/pipeline/expression/lexeme/not_equals_spec.rb
index 38d30c9035a..a3a48f83b27 100644
--- a/spec/lib/gitlab/ci/pipeline/expression/lexeme/not_equals_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/expression/lexeme/not_equals_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Pipeline::Expression::Lexeme::NotEquals do
diff --git a/spec/lib/gitlab/ci/pipeline/expression/lexeme/not_matches_spec.rb b/spec/lib/gitlab/ci/pipeline/expression/lexeme/not_matches_spec.rb
index 99110ff8d88..6b81008ffb1 100644
--- a/spec/lib/gitlab/ci/pipeline/expression/lexeme/not_matches_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/expression/lexeme/not_matches_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 require_dependency 're2'
 
diff --git a/spec/lib/gitlab/ci/pipeline/expression/lexeme/null_spec.rb b/spec/lib/gitlab/ci/pipeline/expression/lexeme/null_spec.rb
index b5a59929e11..7013c6bacbb 100644
--- a/spec/lib/gitlab/ci/pipeline/expression/lexeme/null_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/expression/lexeme/null_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Pipeline::Expression::Lexeme::Null do
diff --git a/spec/lib/gitlab/ci/pipeline/expression/lexeme/or_spec.rb b/spec/lib/gitlab/ci/pipeline/expression/lexeme/or_spec.rb
index d542eebc613..15505ebc82b 100644
--- a/spec/lib/gitlab/ci/pipeline/expression/lexeme/or_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/expression/lexeme/or_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 require 'rspec-parameterized'
 
diff --git a/spec/lib/gitlab/ci/pipeline/expression/lexeme/pattern_spec.rb b/spec/lib/gitlab/ci/pipeline/expression/lexeme/pattern_spec.rb
index 6ce4b321397..2cc25a07417 100644
--- a/spec/lib/gitlab/ci/pipeline/expression/lexeme/pattern_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/expression/lexeme/pattern_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Pipeline::Expression::Lexeme::Pattern do
diff --git a/spec/lib/gitlab/ci/pipeline/expression/lexeme/string_spec.rb b/spec/lib/gitlab/ci/pipeline/expression/lexeme/string_spec.rb
index f54ef492e6d..2a6b90d127f 100644
--- a/spec/lib/gitlab/ci/pipeline/expression/lexeme/string_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/expression/lexeme/string_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Pipeline::Expression::Lexeme::String do
diff --git a/spec/lib/gitlab/ci/pipeline/expression/lexeme/variable_spec.rb b/spec/lib/gitlab/ci/pipeline/expression/lexeme/variable_spec.rb
index 599a5411881..29e26930249 100644
--- a/spec/lib/gitlab/ci/pipeline/expression/lexeme/variable_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/expression/lexeme/variable_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Pipeline::Expression::Lexeme::Variable do
diff --git a/spec/lib/gitlab/ci/pipeline/expression/lexer_spec.rb b/spec/lib/gitlab/ci/pipeline/expression/lexer_spec.rb
index 7c98e729b0b..2b0cee2d6f2 100644
--- a/spec/lib/gitlab/ci/pipeline/expression/lexer_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/expression/lexer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Pipeline::Expression::Lexer do
diff --git a/spec/lib/gitlab/ci/pipeline/expression/parser_spec.rb b/spec/lib/gitlab/ci/pipeline/expression/parser_spec.rb
index e88ec5561b6..10adfa18af6 100644
--- a/spec/lib/gitlab/ci/pipeline/expression/parser_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/expression/parser_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 
 describe Gitlab::Ci::Pipeline::Expression::Parser do
diff --git a/spec/lib/gitlab/ci/pipeline/expression/statement_spec.rb b/spec/lib/gitlab/ci/pipeline/expression/statement_spec.rb
index b259ef711aa..79ee4d07e3a 100644
--- a/spec/lib/gitlab/ci/pipeline/expression/statement_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/expression/statement_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 require 'rspec-parameterized'
 
diff --git a/spec/lib/gitlab/ci/pipeline/expression/token_spec.rb b/spec/lib/gitlab/ci/pipeline/expression/token_spec.rb
index cedfe270f9d..aa807cecb72 100644
--- a/spec/lib/gitlab/ci/pipeline/expression/token_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/expression/token_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'fast_spec_helper'
 
 describe Gitlab::Ci::Pipeline::Expression::Token do
diff --git a/spec/lib/gitlab/ci/pipeline/seed/stage_spec.rb b/spec/lib/gitlab/ci/pipeline/seed/stage_spec.rb
index 493ca3cd7b5..ad864d0d56e 100644
--- a/spec/lib/gitlab/ci/pipeline/seed/stage_spec.rb
+++ b/spec/lib/gitlab/ci/pipeline/seed/stage_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Pipeline::Seed::Stage do
diff --git a/spec/lib/gitlab/ci/reports/test_case_spec.rb b/spec/lib/gitlab/ci/reports/test_case_spec.rb
index 6932f79f0ce..20c489ee94c 100644
--- a/spec/lib/gitlab/ci/reports/test_case_spec.rb
+++ b/spec/lib/gitlab/ci/reports/test_case_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Reports::TestCase do
diff --git a/spec/lib/gitlab/ci/reports/test_reports_comparer_spec.rb b/spec/lib/gitlab/ci/reports/test_reports_comparer_spec.rb
index 36582204cc1..48eef0643b2 100644
--- a/spec/lib/gitlab/ci/reports/test_reports_comparer_spec.rb
+++ b/spec/lib/gitlab/ci/reports/test_reports_comparer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Reports::TestReportsComparer do
diff --git a/spec/lib/gitlab/ci/reports/test_reports_spec.rb b/spec/lib/gitlab/ci/reports/test_reports_spec.rb
index 74ff134b239..0b5d05bada3 100644
--- a/spec/lib/gitlab/ci/reports/test_reports_spec.rb
+++ b/spec/lib/gitlab/ci/reports/test_reports_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Reports::TestReports do
diff --git a/spec/lib/gitlab/ci/reports/test_suite_comparer_spec.rb b/spec/lib/gitlab/ci/reports/test_suite_comparer_spec.rb
index 579b3e6fd24..cf4690bb334 100644
--- a/spec/lib/gitlab/ci/reports/test_suite_comparer_spec.rb
+++ b/spec/lib/gitlab/ci/reports/test_suite_comparer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Reports::TestSuiteComparer do
diff --git a/spec/lib/gitlab/ci/reports/test_suite_spec.rb b/spec/lib/gitlab/ci/reports/test_suite_spec.rb
index cd34dbaf62f..8646db43bc8 100644
--- a/spec/lib/gitlab/ci/reports/test_suite_spec.rb
+++ b/spec/lib/gitlab/ci/reports/test_suite_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Reports::TestSuite do
diff --git a/spec/lib/gitlab/ci/status/build/action_spec.rb b/spec/lib/gitlab/ci/status/build/action_spec.rb
index bdec582b57b..3aae7e18d6d 100644
--- a/spec/lib/gitlab/ci/status/build/action_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/action_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Build::Action do
diff --git a/spec/lib/gitlab/ci/status/build/cancelable_spec.rb b/spec/lib/gitlab/ci/status/build/cancelable_spec.rb
index 78d6fa65b5a..3841dae91c7 100644
--- a/spec/lib/gitlab/ci/status/build/cancelable_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/cancelable_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Build::Cancelable do
diff --git a/spec/lib/gitlab/ci/status/build/canceled_spec.rb b/spec/lib/gitlab/ci/status/build/canceled_spec.rb
index c6b5cc68770..4b43c78f1a7 100644
--- a/spec/lib/gitlab/ci/status/build/canceled_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/canceled_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Build::Canceled do
diff --git a/spec/lib/gitlab/ci/status/build/common_spec.rb b/spec/lib/gitlab/ci/status/build/common_spec.rb
index ca3c66f0152..5114540708f 100644
--- a/spec/lib/gitlab/ci/status/build/common_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/common_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Build::Common do
diff --git a/spec/lib/gitlab/ci/status/build/created_spec.rb b/spec/lib/gitlab/ci/status/build/created_spec.rb
index 8bdfe6ef7a2..6e3aa442810 100644
--- a/spec/lib/gitlab/ci/status/build/created_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/created_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Build::Created do
diff --git a/spec/lib/gitlab/ci/status/build/erased_spec.rb b/spec/lib/gitlab/ci/status/build/erased_spec.rb
index 0acd271e375..af9c296da0c 100644
--- a/spec/lib/gitlab/ci/status/build/erased_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/erased_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Build::Erased do
diff --git a/spec/lib/gitlab/ci/status/build/factory_spec.rb b/spec/lib/gitlab/ci/status/build/factory_spec.rb
index b6231510b91..de489fa4664 100644
--- a/spec/lib/gitlab/ci/status/build/factory_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/factory_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Build::Factory do
diff --git a/spec/lib/gitlab/ci/status/build/failed_allowed_spec.rb b/spec/lib/gitlab/ci/status/build/failed_allowed_spec.rb
index 2a5915d75d0..01500689619 100644
--- a/spec/lib/gitlab/ci/status/build/failed_allowed_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/failed_allowed_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Build::FailedAllowed do
diff --git a/spec/lib/gitlab/ci/status/build/failed_spec.rb b/spec/lib/gitlab/ci/status/build/failed_spec.rb
index e424270f7c5..78f5214ca81 100644
--- a/spec/lib/gitlab/ci/status/build/failed_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/failed_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Build::Failed do
diff --git a/spec/lib/gitlab/ci/status/build/failed_unmet_prerequisites_spec.rb b/spec/lib/gitlab/ci/status/build/failed_unmet_prerequisites_spec.rb
index a4854bdc6b9..19a3c82eac7 100644
--- a/spec/lib/gitlab/ci/status/build/failed_unmet_prerequisites_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/failed_unmet_prerequisites_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 RSpec.describe Gitlab::Ci::Status::Build::FailedUnmetPrerequisites do
diff --git a/spec/lib/gitlab/ci/status/build/manual_spec.rb b/spec/lib/gitlab/ci/status/build/manual_spec.rb
index 6386296f992..bffe2c10d12 100644
--- a/spec/lib/gitlab/ci/status/build/manual_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/manual_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Build::Manual do
diff --git a/spec/lib/gitlab/ci/status/build/pending_spec.rb b/spec/lib/gitlab/ci/status/build/pending_spec.rb
index 4cf70828e53..64d57954c15 100644
--- a/spec/lib/gitlab/ci/status/build/pending_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/pending_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Build::Pending do
diff --git a/spec/lib/gitlab/ci/status/build/play_spec.rb b/spec/lib/gitlab/ci/status/build/play_spec.rb
index 02f8c4c114b..bb12a900b55 100644
--- a/spec/lib/gitlab/ci/status/build/play_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/play_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Build::Play do
diff --git a/spec/lib/gitlab/ci/status/build/retried_spec.rb b/spec/lib/gitlab/ci/status/build/retried_spec.rb
index 76c2fb01e3f..fce497d40a1 100644
--- a/spec/lib/gitlab/ci/status/build/retried_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/retried_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Build::Retried do
diff --git a/spec/lib/gitlab/ci/status/build/retryable_spec.rb b/spec/lib/gitlab/ci/status/build/retryable_spec.rb
index 84d98588f2d..5b0ae315927 100644
--- a/spec/lib/gitlab/ci/status/build/retryable_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/retryable_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Build::Retryable do
diff --git a/spec/lib/gitlab/ci/status/build/scheduled_spec.rb b/spec/lib/gitlab/ci/status/build/scheduled_spec.rb
index 68b87fea75d..8f87da10815 100644
--- a/spec/lib/gitlab/ci/status/build/scheduled_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/scheduled_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Build::Scheduled do
diff --git a/spec/lib/gitlab/ci/status/build/skipped_spec.rb b/spec/lib/gitlab/ci/status/build/skipped_spec.rb
index 46f6933025a..7ce5142da78 100644
--- a/spec/lib/gitlab/ci/status/build/skipped_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/skipped_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Build::Skipped do
diff --git a/spec/lib/gitlab/ci/status/build/stop_spec.rb b/spec/lib/gitlab/ci/status/build/stop_spec.rb
index 5b7534c96c1..d3e98400a53 100644
--- a/spec/lib/gitlab/ci/status/build/stop_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/stop_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Build::Stop do
diff --git a/spec/lib/gitlab/ci/status/build/unschedule_spec.rb b/spec/lib/gitlab/ci/status/build/unschedule_spec.rb
index ed046d66ca5..c18fc3252b4 100644
--- a/spec/lib/gitlab/ci/status/build/unschedule_spec.rb
+++ b/spec/lib/gitlab/ci/status/build/unschedule_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Build::Unschedule do
diff --git a/spec/lib/gitlab/ci/status/canceled_spec.rb b/spec/lib/gitlab/ci/status/canceled_spec.rb
index dc74d7e28c5..6cfcea4fdde 100644
--- a/spec/lib/gitlab/ci/status/canceled_spec.rb
+++ b/spec/lib/gitlab/ci/status/canceled_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Canceled do
diff --git a/spec/lib/gitlab/ci/status/created_spec.rb b/spec/lib/gitlab/ci/status/created_spec.rb
index ce4333f2aca..aeb41e9cfc3 100644
--- a/spec/lib/gitlab/ci/status/created_spec.rb
+++ b/spec/lib/gitlab/ci/status/created_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Created do
diff --git a/spec/lib/gitlab/ci/status/extended_spec.rb b/spec/lib/gitlab/ci/status/extended_spec.rb
index 6eacb07078b..8accfc4a2f9 100644
--- a/spec/lib/gitlab/ci/status/extended_spec.rb
+++ b/spec/lib/gitlab/ci/status/extended_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Extended do
diff --git a/spec/lib/gitlab/ci/status/external/common_spec.rb b/spec/lib/gitlab/ci/status/external/common_spec.rb
index 0d02c371a92..983522fa2d6 100644
--- a/spec/lib/gitlab/ci/status/external/common_spec.rb
+++ b/spec/lib/gitlab/ci/status/external/common_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::External::Common do
diff --git a/spec/lib/gitlab/ci/status/external/factory_spec.rb b/spec/lib/gitlab/ci/status/external/factory_spec.rb
index 529d02a3e39..3b90fb60cca 100644
--- a/spec/lib/gitlab/ci/status/external/factory_spec.rb
+++ b/spec/lib/gitlab/ci/status/external/factory_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::External::Factory do
diff --git a/spec/lib/gitlab/ci/status/factory_spec.rb b/spec/lib/gitlab/ci/status/factory_spec.rb
index bbf9c7c83a3..b51c0bec47e 100644
--- a/spec/lib/gitlab/ci/status/factory_spec.rb
+++ b/spec/lib/gitlab/ci/status/factory_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Factory do
diff --git a/spec/lib/gitlab/ci/status/failed_spec.rb b/spec/lib/gitlab/ci/status/failed_spec.rb
index a4a92117c7f..5c7393fc8cf 100644
--- a/spec/lib/gitlab/ci/status/failed_spec.rb
+++ b/spec/lib/gitlab/ci/status/failed_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Failed do
diff --git a/spec/lib/gitlab/ci/status/group/common_spec.rb b/spec/lib/gitlab/ci/status/group/common_spec.rb
index c0ca05881f5..35fff30ea9d 100644
--- a/spec/lib/gitlab/ci/status/group/common_spec.rb
+++ b/spec/lib/gitlab/ci/status/group/common_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Group::Common do
diff --git a/spec/lib/gitlab/ci/status/group/factory_spec.rb b/spec/lib/gitlab/ci/status/group/factory_spec.rb
index 0cd83123938..be76a1d5a65 100644
--- a/spec/lib/gitlab/ci/status/group/factory_spec.rb
+++ b/spec/lib/gitlab/ci/status/group/factory_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Group::Factory do
diff --git a/spec/lib/gitlab/ci/status/manual_spec.rb b/spec/lib/gitlab/ci/status/manual_spec.rb
index 0463f2e1aff..0839452ec22 100644
--- a/spec/lib/gitlab/ci/status/manual_spec.rb
+++ b/spec/lib/gitlab/ci/status/manual_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Manual do
diff --git a/spec/lib/gitlab/ci/status/pending_spec.rb b/spec/lib/gitlab/ci/status/pending_spec.rb
index 0e25358dd8a..5f830e5bb56 100644
--- a/spec/lib/gitlab/ci/status/pending_spec.rb
+++ b/spec/lib/gitlab/ci/status/pending_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Pending do
diff --git a/spec/lib/gitlab/ci/status/pipeline/blocked_spec.rb b/spec/lib/gitlab/ci/status/pipeline/blocked_spec.rb
index 1a2b952d374..876ba712d05 100644
--- a/spec/lib/gitlab/ci/status/pipeline/blocked_spec.rb
+++ b/spec/lib/gitlab/ci/status/pipeline/blocked_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Pipeline::Blocked do
diff --git a/spec/lib/gitlab/ci/status/pipeline/common_spec.rb b/spec/lib/gitlab/ci/status/pipeline/common_spec.rb
index 57df8325635..d3251d138b8 100644
--- a/spec/lib/gitlab/ci/status/pipeline/common_spec.rb
+++ b/spec/lib/gitlab/ci/status/pipeline/common_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Pipeline::Common do
diff --git a/spec/lib/gitlab/ci/status/pipeline/delayed_spec.rb b/spec/lib/gitlab/ci/status/pipeline/delayed_spec.rb
index f89712d2b03..90b797965b3 100644
--- a/spec/lib/gitlab/ci/status/pipeline/delayed_spec.rb
+++ b/spec/lib/gitlab/ci/status/pipeline/delayed_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Pipeline::Delayed do
diff --git a/spec/lib/gitlab/ci/status/pipeline/factory_spec.rb b/spec/lib/gitlab/ci/status/pipeline/factory_spec.rb
index 466087a0e31..8a36cd1b658 100644
--- a/spec/lib/gitlab/ci/status/pipeline/factory_spec.rb
+++ b/spec/lib/gitlab/ci/status/pipeline/factory_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Pipeline::Factory do
diff --git a/spec/lib/gitlab/ci/status/running_spec.rb b/spec/lib/gitlab/ci/status/running_spec.rb
index 9c9d431bb5d..75ff58c5c98 100644
--- a/spec/lib/gitlab/ci/status/running_spec.rb
+++ b/spec/lib/gitlab/ci/status/running_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Running do
diff --git a/spec/lib/gitlab/ci/status/scheduled_spec.rb b/spec/lib/gitlab/ci/status/scheduled_spec.rb
index b8ca3caa1f7..a0374e1a87b 100644
--- a/spec/lib/gitlab/ci/status/scheduled_spec.rb
+++ b/spec/lib/gitlab/ci/status/scheduled_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Scheduled do
diff --git a/spec/lib/gitlab/ci/status/skipped_spec.rb b/spec/lib/gitlab/ci/status/skipped_spec.rb
index 63694ca0ea6..7f68d4a2fa9 100644
--- a/spec/lib/gitlab/ci/status/skipped_spec.rb
+++ b/spec/lib/gitlab/ci/status/skipped_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Skipped do
diff --git a/spec/lib/gitlab/ci/status/stage/common_spec.rb b/spec/lib/gitlab/ci/status/stage/common_spec.rb
index bb2d0a2c75c..26ff0e901fd 100644
--- a/spec/lib/gitlab/ci/status/stage/common_spec.rb
+++ b/spec/lib/gitlab/ci/status/stage/common_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Stage::Common do
diff --git a/spec/lib/gitlab/ci/status/stage/factory_spec.rb b/spec/lib/gitlab/ci/status/stage/factory_spec.rb
index 4b299170c87..8f5b1ff62a5 100644
--- a/spec/lib/gitlab/ci/status/stage/factory_spec.rb
+++ b/spec/lib/gitlab/ci/status/stage/factory_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Stage::Factory do
diff --git a/spec/lib/gitlab/ci/status/success_spec.rb b/spec/lib/gitlab/ci/status/success_spec.rb
index 2f67df71c4f..d4b3a9f12cc 100644
--- a/spec/lib/gitlab/ci/status/success_spec.rb
+++ b/spec/lib/gitlab/ci/status/success_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::Success do
diff --git a/spec/lib/gitlab/ci/status/success_warning_spec.rb b/spec/lib/gitlab/ci/status/success_warning_spec.rb
index 9493b1d89f2..af952011e21 100644
--- a/spec/lib/gitlab/ci/status/success_warning_spec.rb
+++ b/spec/lib/gitlab/ci/status/success_warning_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Status::SuccessWarning do
diff --git a/spec/lib/gitlab/ci/trace/chunked_io_spec.rb b/spec/lib/gitlab/ci/trace/chunked_io_spec.rb
index 3e5cd81f929..e5948f07c70 100644
--- a/spec/lib/gitlab/ci/trace/chunked_io_spec.rb
+++ b/spec/lib/gitlab/ci/trace/chunked_io_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Trace::ChunkedIO, :clean_gitlab_redis_cache do
diff --git a/spec/lib/gitlab/ci/trace/section_parser_spec.rb b/spec/lib/gitlab/ci/trace/section_parser_spec.rb
index ca53ff87c6f..5e2efe083be 100644
--- a/spec/lib/gitlab/ci/trace/section_parser_spec.rb
+++ b/spec/lib/gitlab/ci/trace/section_parser_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Trace::SectionParser do
diff --git a/spec/lib/gitlab/ci/trace_spec.rb b/spec/lib/gitlab/ci/trace_spec.rb
index d6510649dba..f7bc5686b68 100644
--- a/spec/lib/gitlab/ci/trace_spec.rb
+++ b/spec/lib/gitlab/ci/trace_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Trace, :clean_gitlab_redis_shared_state do
diff --git a/spec/lib/gitlab/ci/variables/collection/item_spec.rb b/spec/lib/gitlab/ci/variables/collection/item_spec.rb
index 613814df23f..1bdca753cd3 100644
--- a/spec/lib/gitlab/ci/variables/collection/item_spec.rb
+++ b/spec/lib/gitlab/ci/variables/collection/item_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Variables::Collection::Item do
diff --git a/spec/lib/gitlab/ci/variables/collection_spec.rb b/spec/lib/gitlab/ci/variables/collection_spec.rb
index 8e732d44d5d..59b9f7d4fb9 100644
--- a/spec/lib/gitlab/ci/variables/collection_spec.rb
+++ b/spec/lib/gitlab/ci/variables/collection_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Ci::Variables::Collection do
diff --git a/spec/lib/gitlab/ci/yaml_processor_spec.rb b/spec/lib/gitlab/ci/yaml_processor_spec.rb
index 789d6813d5b..fc9d4f97bda 100644
--- a/spec/lib/gitlab/ci/yaml_processor_spec.rb
+++ b/spec/lib/gitlab/ci/yaml_processor_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 module Gitlab
diff --git a/spec/lib/gitlab/ci_access_spec.rb b/spec/lib/gitlab/ci_access_spec.rb
index 75b90e76083..3c68d209eb6 100644
--- a/spec/lib/gitlab/ci_access_spec.rb
+++ b/spec/lib/gitlab/ci_access_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::CiAccess do
diff --git a/spec/lib/gitlab/closing_issue_extractor_spec.rb b/spec/lib/gitlab/closing_issue_extractor_spec.rb
index 44568f2a653..fdd01f58c9d 100644
--- a/spec/lib/gitlab/closing_issue_extractor_spec.rb
+++ b/spec/lib/gitlab/closing_issue_extractor_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::ClosingIssueExtractor do
diff --git a/spec/lib/gitlab/color_schemes_spec.rb b/spec/lib/gitlab/color_schemes_spec.rb
index c7be45dbcd3..ba5573f6901 100644
--- a/spec/lib/gitlab/color_schemes_spec.rb
+++ b/spec/lib/gitlab/color_schemes_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::ColorSchemes do
diff --git a/spec/lib/gitlab/config/entry/attributable_spec.rb b/spec/lib/gitlab/config/entry/attributable_spec.rb
index abb4fff3ad7..82614bb8238 100644
--- a/spec/lib/gitlab/config/entry/attributable_spec.rb
+++ b/spec/lib/gitlab/config/entry/attributable_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Config::Entry::Attributable do
diff --git a/spec/lib/gitlab/config/entry/boolean_spec.rb b/spec/lib/gitlab/config/entry/boolean_spec.rb
index 1b7a3f850ec..0b8b720dd80 100644
--- a/spec/lib/gitlab/config/entry/boolean_spec.rb
+++ b/spec/lib/gitlab/config/entry/boolean_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Config::Entry::Boolean do
diff --git a/spec/lib/gitlab/config/entry/configurable_spec.rb b/spec/lib/gitlab/config/entry/configurable_spec.rb
index 62dbf20ddf8..8c3a4490d08 100644
--- a/spec/lib/gitlab/config/entry/configurable_spec.rb
+++ b/spec/lib/gitlab/config/entry/configurable_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Config::Entry::Configurable do
diff --git a/spec/lib/gitlab/config/entry/factory_spec.rb b/spec/lib/gitlab/config/entry/factory_spec.rb
index 42f8be8e141..a614ef56a78 100644
--- a/spec/lib/gitlab/config/entry/factory_spec.rb
+++ b/spec/lib/gitlab/config/entry/factory_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Config::Entry::Factory do
diff --git a/spec/lib/gitlab/config/entry/simplifiable_spec.rb b/spec/lib/gitlab/config/entry/simplifiable_spec.rb
index bc8387ada67..65e18fe3f10 100644
--- a/spec/lib/gitlab/config/entry/simplifiable_spec.rb
+++ b/spec/lib/gitlab/config/entry/simplifiable_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Config::Entry::Simplifiable do
diff --git a/spec/lib/gitlab/config/entry/undefined_spec.rb b/spec/lib/gitlab/config/entry/undefined_spec.rb
index 48f9d276c95..83c3a6aec72 100644
--- a/spec/lib/gitlab/config/entry/undefined_spec.rb
+++ b/spec/lib/gitlab/config/entry/undefined_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Config::Entry::Undefined do
diff --git a/spec/lib/gitlab/config/entry/unspecified_spec.rb b/spec/lib/gitlab/config/entry/unspecified_spec.rb
index 64421824a12..32c52594ecf 100644
--- a/spec/lib/gitlab/config/entry/unspecified_spec.rb
+++ b/spec/lib/gitlab/config/entry/unspecified_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Config::Entry::Unspecified do
diff --git a/spec/lib/gitlab/config/entry/validatable_spec.rb b/spec/lib/gitlab/config/entry/validatable_spec.rb
index 5a8f9766d23..925db3594ba 100644
--- a/spec/lib/gitlab/config/entry/validatable_spec.rb
+++ b/spec/lib/gitlab/config/entry/validatable_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Config::Entry::Validatable do
diff --git a/spec/lib/gitlab/config/entry/validator_spec.rb b/spec/lib/gitlab/config/entry/validator_spec.rb
index efa16c4265c..7bf350912df 100644
--- a/spec/lib/gitlab/config/entry/validator_spec.rb
+++ b/spec/lib/gitlab/config/entry/validator_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Config::Entry::Validator do
diff --git a/spec/lib/gitlab/config/loader/yaml_spec.rb b/spec/lib/gitlab/config/loader/yaml_spec.rb
index 0affeb01f6a..ccddf340c3d 100644
--- a/spec/lib/gitlab/config/loader/yaml_spec.rb
+++ b/spec/lib/gitlab/config/loader/yaml_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Config::Loader::Yaml do
diff --git a/spec/lib/gitlab/conflict/file_collection_spec.rb b/spec/lib/gitlab/conflict/file_collection_spec.rb
index c93912db411..f3cdb1a9e59 100644
--- a/spec/lib/gitlab/conflict/file_collection_spec.rb
+++ b/spec/lib/gitlab/conflict/file_collection_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Conflict::FileCollection do
diff --git a/spec/lib/gitlab/conflict/file_spec.rb b/spec/lib/gitlab/conflict/file_spec.rb
index a955ce54e85..adf5a232a75 100644
--- a/spec/lib/gitlab/conflict/file_spec.rb
+++ b/spec/lib/gitlab/conflict/file_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Conflict::File do
diff --git a/spec/lib/gitlab/contributions_calendar_spec.rb b/spec/lib/gitlab/contributions_calendar_spec.rb
index 51e5bdc6307..1154f029a8d 100644
--- a/spec/lib/gitlab/contributions_calendar_spec.rb
+++ b/spec/lib/gitlab/contributions_calendar_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::ContributionsCalendar do
diff --git a/spec/lib/gitlab/cross_project_access/check_collection_spec.rb b/spec/lib/gitlab/cross_project_access/check_collection_spec.rb
index a9e7575240e..1aa5480b670 100644
--- a/spec/lib/gitlab/cross_project_access/check_collection_spec.rb
+++ b/spec/lib/gitlab/cross_project_access/check_collection_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::CrossProjectAccess::CheckCollection do
diff --git a/spec/lib/gitlab/cross_project_access/check_info_spec.rb b/spec/lib/gitlab/cross_project_access/check_info_spec.rb
index ea7393a7006..7d2471b6327 100644
--- a/spec/lib/gitlab/cross_project_access/check_info_spec.rb
+++ b/spec/lib/gitlab/cross_project_access/check_info_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::CrossProjectAccess::CheckInfo do
diff --git a/spec/lib/gitlab/cross_project_access/class_methods_spec.rb b/spec/lib/gitlab/cross_project_access/class_methods_spec.rb
index 5349685e633..17d265542dd 100644
--- a/spec/lib/gitlab/cross_project_access/class_methods_spec.rb
+++ b/spec/lib/gitlab/cross_project_access/class_methods_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::CrossProjectAccess::ClassMethods do
diff --git a/spec/lib/gitlab/cross_project_access_spec.rb b/spec/lib/gitlab/cross_project_access_spec.rb
index 614b0473c7e..ce18d207413 100644
--- a/spec/lib/gitlab/cross_project_access_spec.rb
+++ b/spec/lib/gitlab/cross_project_access_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::CrossProjectAccess do
diff --git a/spec/lib/gitlab/crypto_helper_spec.rb b/spec/lib/gitlab/crypto_helper_spec.rb
index 05cc6cf15de..71bbeccb17b 100644
--- a/spec/lib/gitlab/crypto_helper_spec.rb
+++ b/spec/lib/gitlab/crypto_helper_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::CryptoHelper do
diff --git a/spec/lib/gitlab/current_settings_spec.rb b/spec/lib/gitlab/current_settings_spec.rb
index db31e5280a3..2759412add8 100644
--- a/spec/lib/gitlab/current_settings_spec.rb
+++ b/spec/lib/gitlab/current_settings_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::CurrentSettings do
diff --git a/spec/lib/gitlab/cycle_analytics/base_event_fetcher_spec.rb b/spec/lib/gitlab/cycle_analytics/base_event_fetcher_spec.rb
index b7a64adc2ff..3eea791d61a 100644
--- a/spec/lib/gitlab/cycle_analytics/base_event_fetcher_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/base_event_fetcher_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::CycleAnalytics::BaseEventFetcher do
diff --git a/spec/lib/gitlab/cycle_analytics/code_event_fetcher_spec.rb b/spec/lib/gitlab/cycle_analytics/code_event_fetcher_spec.rb
index 0267e8c2f69..b521ad0c6ea 100644
--- a/spec/lib/gitlab/cycle_analytics/code_event_fetcher_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/code_event_fetcher_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'lib/gitlab/cycle_analytics/shared_event_spec'
 
diff --git a/spec/lib/gitlab/cycle_analytics/code_stage_spec.rb b/spec/lib/gitlab/cycle_analytics/code_stage_spec.rb
index 933f3c7896e..dd1d9ac0f16 100644
--- a/spec/lib/gitlab/cycle_analytics/code_stage_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/code_stage_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'lib/gitlab/cycle_analytics/shared_stage_spec'
 
diff --git a/spec/lib/gitlab/cycle_analytics/events_spec.rb b/spec/lib/gitlab/cycle_analytics/events_spec.rb
index 5ee02650e49..a163de07967 100644
--- a/spec/lib/gitlab/cycle_analytics/events_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/events_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe 'cycle analytics events' do
diff --git a/spec/lib/gitlab/cycle_analytics/issue_event_fetcher_spec.rb b/spec/lib/gitlab/cycle_analytics/issue_event_fetcher_spec.rb
index fd9fa2fee49..afb7b6a13b0 100644
--- a/spec/lib/gitlab/cycle_analytics/issue_event_fetcher_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/issue_event_fetcher_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'lib/gitlab/cycle_analytics/shared_event_spec'
 
diff --git a/spec/lib/gitlab/cycle_analytics/issue_stage_spec.rb b/spec/lib/gitlab/cycle_analytics/issue_stage_spec.rb
index dea17e4f3dc..4dd21239cde 100644
--- a/spec/lib/gitlab/cycle_analytics/issue_stage_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/issue_stage_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'lib/gitlab/cycle_analytics/shared_stage_spec'
 
diff --git a/spec/lib/gitlab/cycle_analytics/permissions_spec.rb b/spec/lib/gitlab/cycle_analytics/permissions_spec.rb
index f670c7f6c75..2896e973a43 100644
--- a/spec/lib/gitlab/cycle_analytics/permissions_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/permissions_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::CycleAnalytics::Permissions do
diff --git a/spec/lib/gitlab/cycle_analytics/plan_event_fetcher_spec.rb b/spec/lib/gitlab/cycle_analytics/plan_event_fetcher_spec.rb
index 2e5dc5b5547..17786cd02c6 100644
--- a/spec/lib/gitlab/cycle_analytics/plan_event_fetcher_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/plan_event_fetcher_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'lib/gitlab/cycle_analytics/shared_event_spec'
 
diff --git a/spec/lib/gitlab/cycle_analytics/plan_stage_spec.rb b/spec/lib/gitlab/cycle_analytics/plan_stage_spec.rb
index 3cd1320ca9c..98d2593de66 100644
--- a/spec/lib/gitlab/cycle_analytics/plan_stage_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/plan_stage_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'lib/gitlab/cycle_analytics/shared_stage_spec'
 
diff --git a/spec/lib/gitlab/cycle_analytics/production_event_fetcher_spec.rb b/spec/lib/gitlab/cycle_analytics/production_event_fetcher_spec.rb
index 74001181305..3ecfad49acd 100644
--- a/spec/lib/gitlab/cycle_analytics/production_event_fetcher_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/production_event_fetcher_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'lib/gitlab/cycle_analytics/shared_event_spec'
 
diff --git a/spec/lib/gitlab/cycle_analytics/production_stage_spec.rb b/spec/lib/gitlab/cycle_analytics/production_stage_spec.rb
index 916684b81eb..4d0cc91a318 100644
--- a/spec/lib/gitlab/cycle_analytics/production_stage_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/production_stage_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'lib/gitlab/cycle_analytics/shared_stage_spec'
 
diff --git a/spec/lib/gitlab/cycle_analytics/review_event_fetcher_spec.rb b/spec/lib/gitlab/cycle_analytics/review_event_fetcher_spec.rb
index 4f67c95ed4c..2c2169be58c 100644
--- a/spec/lib/gitlab/cycle_analytics/review_event_fetcher_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/review_event_fetcher_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'lib/gitlab/cycle_analytics/shared_event_spec'
 
diff --git a/spec/lib/gitlab/cycle_analytics/review_stage_spec.rb b/spec/lib/gitlab/cycle_analytics/review_stage_spec.rb
index 6d14973c711..0f36a8c5c36 100644
--- a/spec/lib/gitlab/cycle_analytics/review_stage_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/review_stage_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'lib/gitlab/cycle_analytics/shared_stage_spec'
 
diff --git a/spec/lib/gitlab/cycle_analytics/shared_event_spec.rb b/spec/lib/gitlab/cycle_analytics/shared_event_spec.rb
index b001a46001e..c053af010b3 100644
--- a/spec/lib/gitlab/cycle_analytics/shared_event_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/shared_event_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 shared_examples 'default query config' do
diff --git a/spec/lib/gitlab/cycle_analytics/shared_stage_spec.rb b/spec/lib/gitlab/cycle_analytics/shared_stage_spec.rb
index c146146723f..cf95741908f 100644
--- a/spec/lib/gitlab/cycle_analytics/shared_stage_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/shared_stage_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 shared_examples 'base stage' do
diff --git a/spec/lib/gitlab/cycle_analytics/stage_summary_spec.rb b/spec/lib/gitlab/cycle_analytics/stage_summary_spec.rb
index f8009709ce2..778c2f479b5 100644
--- a/spec/lib/gitlab/cycle_analytics/stage_summary_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/stage_summary_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::CycleAnalytics::StageSummary do
diff --git a/spec/lib/gitlab/cycle_analytics/staging_event_fetcher_spec.rb b/spec/lib/gitlab/cycle_analytics/staging_event_fetcher_spec.rb
index bbc82496340..016d2e8da5b 100644
--- a/spec/lib/gitlab/cycle_analytics/staging_event_fetcher_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/staging_event_fetcher_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'lib/gitlab/cycle_analytics/shared_event_spec'
 
diff --git a/spec/lib/gitlab/cycle_analytics/staging_stage_spec.rb b/spec/lib/gitlab/cycle_analytics/staging_stage_spec.rb
index 9ca12cc448c..bd64c4aca42 100644
--- a/spec/lib/gitlab/cycle_analytics/staging_stage_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/staging_stage_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'lib/gitlab/cycle_analytics/shared_stage_spec'
 
diff --git a/spec/lib/gitlab/cycle_analytics/test_event_fetcher_spec.rb b/spec/lib/gitlab/cycle_analytics/test_event_fetcher_spec.rb
index 6639fa54e0e..be7c0e9dd59 100644
--- a/spec/lib/gitlab/cycle_analytics/test_event_fetcher_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/test_event_fetcher_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'lib/gitlab/cycle_analytics/shared_event_spec'
 
diff --git a/spec/lib/gitlab/cycle_analytics/test_stage_spec.rb b/spec/lib/gitlab/cycle_analytics/test_stage_spec.rb
index 41028c44a00..9162686d17d 100644
--- a/spec/lib/gitlab/cycle_analytics/test_stage_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/test_stage_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 require 'lib/gitlab/cycle_analytics/shared_stage_spec'
 
diff --git a/spec/lib/gitlab/cycle_analytics/updater_spec.rb b/spec/lib/gitlab/cycle_analytics/updater_spec.rb
index eff54cd3692..67f386f9144 100644
--- a/spec/lib/gitlab/cycle_analytics/updater_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/updater_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::CycleAnalytics::Updater do
diff --git a/spec/lib/gitlab/cycle_analytics/usage_data_spec.rb b/spec/lib/gitlab/cycle_analytics/usage_data_spec.rb
index 258ab049c0b..e568ea633db 100644
--- a/spec/lib/gitlab/cycle_analytics/usage_data_spec.rb
+++ b/spec/lib/gitlab/cycle_analytics/usage_data_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::CycleAnalytics::UsageData do
diff --git a/spec/lib/gitlab/daemon_spec.rb b/spec/lib/gitlab/daemon_spec.rb
index 2bdb0dfc736..d3e73314b87 100644
--- a/spec/lib/gitlab/daemon_spec.rb
+++ b/spec/lib/gitlab/daemon_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Daemon do
diff --git a/spec/lib/gitlab/data_builder/build_spec.rb b/spec/lib/gitlab/data_builder/build_spec.rb
index 14fe196a986..b170ef788d9 100644
--- a/spec/lib/gitlab/data_builder/build_spec.rb
+++ b/spec/lib/gitlab/data_builder/build_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::DataBuilder::Build do
diff --git a/spec/lib/gitlab/data_builder/note_spec.rb b/spec/lib/gitlab/data_builder/note_spec.rb
index 1b5dd2538e0..3c26daba5a5 100644
--- a/spec/lib/gitlab/data_builder/note_spec.rb
+++ b/spec/lib/gitlab/data_builder/note_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::DataBuilder::Note do
diff --git a/spec/lib/gitlab/data_builder/pipeline_spec.rb b/spec/lib/gitlab/data_builder/pipeline_spec.rb
index 1f36fd5c6ef..4afb7195b7b 100644
--- a/spec/lib/gitlab/data_builder/pipeline_spec.rb
+++ b/spec/lib/gitlab/data_builder/pipeline_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::DataBuilder::Pipeline do
diff --git a/spec/lib/gitlab/data_builder/push_spec.rb b/spec/lib/gitlab/data_builder/push_spec.rb
index 46ad674a1eb..cc31f88d365 100644
--- a/spec/lib/gitlab/data_builder/push_spec.rb
+++ b/spec/lib/gitlab/data_builder/push_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::DataBuilder::Push do
diff --git a/spec/lib/gitlab/data_builder/wiki_page_spec.rb b/spec/lib/gitlab/data_builder/wiki_page_spec.rb
index 9c8bdf4b032..404d54bf2da 100644
--- a/spec/lib/gitlab/data_builder/wiki_page_spec.rb
+++ b/spec/lib/gitlab/data_builder/wiki_page_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::DataBuilder::WikiPage do
diff --git a/spec/lib/gitlab/database/count/exact_count_strategy_spec.rb b/spec/lib/gitlab/database/count/exact_count_strategy_spec.rb
index 0c1be4b4610..111833a506a 100644
--- a/spec/lib/gitlab/database/count/exact_count_strategy_spec.rb
+++ b/spec/lib/gitlab/database/count/exact_count_strategy_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Database::Count::ExactCountStrategy do
diff --git a/spec/lib/gitlab/database/count/reltuples_count_strategy_spec.rb b/spec/lib/gitlab/database/count/reltuples_count_strategy_spec.rb
index a528707c9dc..e49be9d5a1d 100644
--- a/spec/lib/gitlab/database/count/reltuples_count_strategy_spec.rb
+++ b/spec/lib/gitlab/database/count/reltuples_count_strategy_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Database::Count::ReltuplesCountStrategy do
diff --git a/spec/lib/gitlab/database/count/tablesample_count_strategy_spec.rb b/spec/lib/gitlab/database/count/tablesample_count_strategy_spec.rb
index a57f033b5ed..8d01ea930c5 100644
--- a/spec/lib/gitlab/database/count/tablesample_count_strategy_spec.rb
+++ b/spec/lib/gitlab/database/count/tablesample_count_strategy_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Database::Count::TablesampleCountStrategy do
diff --git a/spec/lib/gitlab/database/count_spec.rb b/spec/lib/gitlab/database/count_spec.rb
index 71d6633f62f..71c25f23b6b 100644
--- a/spec/lib/gitlab/database/count_spec.rb
+++ b/spec/lib/gitlab/database/count_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Database::Count do
diff --git a/spec/lib/gitlab/database/grant_spec.rb b/spec/lib/gitlab/database/grant_spec.rb
index 5ebf3f399b6..f305656568c 100644
--- a/spec/lib/gitlab/database/grant_spec.rb
+++ b/spec/lib/gitlab/database/grant_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Database::Grant do
diff --git a/spec/lib/gitlab/database/migration_helpers_spec.rb b/spec/lib/gitlab/database/migration_helpers_spec.rb
index b73828b9554..2731fc8573f 100644
--- a/spec/lib/gitlab/database/migration_helpers_spec.rb
+++ b/spec/lib/gitlab/database/migration_helpers_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Database::MigrationHelpers do
diff --git a/spec/lib/gitlab/database/multi_threaded_migration_spec.rb b/spec/lib/gitlab/database/multi_threaded_migration_spec.rb
index 6c45f13bb5a..53c001fbc1b 100644
--- a/spec/lib/gitlab/database/multi_threaded_migration_spec.rb
+++ b/spec/lib/gitlab/database/multi_threaded_migration_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Database::MultiThreadedMigration do
diff --git a/spec/lib/gitlab/database/rename_reserved_paths_migration/v1/rename_base_spec.rb b/spec/lib/gitlab/database/rename_reserved_paths_migration/v1/rename_base_spec.rb
index 81419e51635..612c418e8bb 100644
--- a/spec/lib/gitlab/database/rename_reserved_paths_migration/v1/rename_base_spec.rb
+++ b/spec/lib/gitlab/database/rename_reserved_paths_migration/v1/rename_base_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Database::RenameReservedPathsMigration::V1::RenameBase, :delete do
diff --git a/spec/lib/gitlab/database/rename_reserved_paths_migration/v1/rename_namespaces_spec.rb b/spec/lib/gitlab/database/rename_reserved_paths_migration/v1/rename_namespaces_spec.rb
index b6096d4faf6..8c4d7e323fa 100644
--- a/spec/lib/gitlab/database/rename_reserved_paths_migration/v1/rename_namespaces_spec.rb
+++ b/spec/lib/gitlab/database/rename_reserved_paths_migration/v1/rename_namespaces_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Database::RenameReservedPathsMigration::V1::RenameNamespaces, :delete do
diff --git a/spec/lib/gitlab/database/rename_reserved_paths_migration/v1/rename_projects_spec.rb b/spec/lib/gitlab/database/rename_reserved_paths_migration/v1/rename_projects_spec.rb
index d4d7a83921c..1ccdb1d9447 100644
--- a/spec/lib/gitlab/database/rename_reserved_paths_migration/v1/rename_projects_spec.rb
+++ b/spec/lib/gitlab/database/rename_reserved_paths_migration/v1/rename_projects_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Database::RenameReservedPathsMigration::V1::RenameProjects, :delete do
diff --git a/spec/lib/gitlab/database/rename_reserved_paths_migration/v1_spec.rb b/spec/lib/gitlab/database/rename_reserved_paths_migration/v1_spec.rb
index ddd54a669a3..b09258ae227 100644
--- a/spec/lib/gitlab/database/rename_reserved_paths_migration/v1_spec.rb
+++ b/spec/lib/gitlab/database/rename_reserved_paths_migration/v1_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 shared_examples 'renames child namespaces' do |type|
diff --git a/spec/lib/gitlab/database/sha_attribute_spec.rb b/spec/lib/gitlab/database/sha_attribute_spec.rb
index 778bfa2cc47..9dd80e0a229 100644
--- a/spec/lib/gitlab/database/sha_attribute_spec.rb
+++ b/spec/lib/gitlab/database/sha_attribute_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Database::ShaAttribute do
diff --git a/spec/lib/gitlab/database_spec.rb b/spec/lib/gitlab/database_spec.rb
index 9e8712266e8..bdc48934589 100644
--- a/spec/lib/gitlab/database_spec.rb
+++ b/spec/lib/gitlab/database_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Database do
diff --git a/spec/lib/gitlab/dependency_linker/cartfile_linker_spec.rb b/spec/lib/gitlab/dependency_linker/cartfile_linker_spec.rb
index 3a93d5e1e97..3eb5db51224 100644
--- a/spec/lib/gitlab/dependency_linker/cartfile_linker_spec.rb
+++ b/spec/lib/gitlab/dependency_linker/cartfile_linker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Gitlab::DependencyLinker::CartfileLinker do
diff --git a/spec/lib/gitlab/dependency_linker/composer_json_linker_spec.rb b/spec/lib/gitlab/dependency_linker/composer_json_linker_spec.rb
index 0ebd8994636..6bef6f57e64 100644
--- a/spec/lib/gitlab/dependency_linker/composer_json_linker_spec.rb
+++ b/spec/lib/gitlab/dependency_linker/composer_json_linker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Gitlab::DependencyLinker::ComposerJsonLinker do
diff --git a/spec/lib/gitlab/dependency_linker/gemfile_linker_spec.rb b/spec/lib/gitlab/dependency_linker/gemfile_linker_spec.rb
index f00f6b47b94..6ecdb0d1247 100644
--- a/spec/lib/gitlab/dependency_linker/gemfile_linker_spec.rb
+++ b/spec/lib/gitlab/dependency_linker/gemfile_linker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Gitlab::DependencyLinker::GemfileLinker do
diff --git a/spec/lib/gitlab/dependency_linker/gemspec_linker_spec.rb b/spec/lib/gitlab/dependency_linker/gemspec_linker_spec.rb
index 6c6a5d70576..256fe58925c 100644
--- a/spec/lib/gitlab/dependency_linker/gemspec_linker_spec.rb
+++ b/spec/lib/gitlab/dependency_linker/gemspec_linker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Gitlab::DependencyLinker::GemspecLinker do
diff --git a/spec/lib/gitlab/dependency_linker/godeps_json_linker_spec.rb b/spec/lib/gitlab/dependency_linker/godeps_json_linker_spec.rb
index ae5ad39ad11..f620d1b590c 100644
--- a/spec/lib/gitlab/dependency_linker/godeps_json_linker_spec.rb
+++ b/spec/lib/gitlab/dependency_linker/godeps_json_linker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Gitlab::DependencyLinker::GodepsJsonLinker do
diff --git a/spec/lib/gitlab/dependency_linker/package_json_linker_spec.rb b/spec/lib/gitlab/dependency_linker/package_json_linker_spec.rb
index 9050127af7f..71e9381eaad 100644
--- a/spec/lib/gitlab/dependency_linker/package_json_linker_spec.rb
+++ b/spec/lib/gitlab/dependency_linker/package_json_linker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Gitlab::DependencyLinker::PackageJsonLinker do
diff --git a/spec/lib/gitlab/dependency_linker/podfile_linker_spec.rb b/spec/lib/gitlab/dependency_linker/podfile_linker_spec.rb
index 8f1b523653e..eb81bc07760 100644
--- a/spec/lib/gitlab/dependency_linker/podfile_linker_spec.rb
+++ b/spec/lib/gitlab/dependency_linker/podfile_linker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Gitlab::DependencyLinker::PodfileLinker do
diff --git a/spec/lib/gitlab/dependency_linker/podspec_json_linker_spec.rb b/spec/lib/gitlab/dependency_linker/podspec_json_linker_spec.rb
index d4a398c5948..938726dd434 100644
--- a/spec/lib/gitlab/dependency_linker/podspec_json_linker_spec.rb
+++ b/spec/lib/gitlab/dependency_linker/podspec_json_linker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Gitlab::DependencyLinker::PodspecJsonLinker do
diff --git a/spec/lib/gitlab/dependency_linker/podspec_linker_spec.rb b/spec/lib/gitlab/dependency_linker/podspec_linker_spec.rb
index bacec830103..540eb2fadfe 100644
--- a/spec/lib/gitlab/dependency_linker/podspec_linker_spec.rb
+++ b/spec/lib/gitlab/dependency_linker/podspec_linker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Gitlab::DependencyLinker::PodspecLinker do
diff --git a/spec/lib/gitlab/dependency_linker/requirements_txt_linker_spec.rb b/spec/lib/gitlab/dependency_linker/requirements_txt_linker_spec.rb
index ef952b3abd5..957a87985a2 100644
--- a/spec/lib/gitlab/dependency_linker/requirements_txt_linker_spec.rb
+++ b/spec/lib/gitlab/dependency_linker/requirements_txt_linker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Gitlab::DependencyLinker::RequirementsTxtLinker do
diff --git a/spec/lib/gitlab/dependency_linker_spec.rb b/spec/lib/gitlab/dependency_linker_spec.rb
index 10d2f701298..98e46d62ca0 100644
--- a/spec/lib/gitlab/dependency_linker_spec.rb
+++ b/spec/lib/gitlab/dependency_linker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe Gitlab::DependencyLinker do
diff --git a/spec/lib/gitlab/diff/diff_refs_spec.rb b/spec/lib/gitlab/diff/diff_refs_spec.rb
index f9bfb4c469e..e12b46c15ad 100644
--- a/spec/lib/gitlab/diff/diff_refs_spec.rb
+++ b/spec/lib/gitlab/diff/diff_refs_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Diff::DiffRefs do
diff --git a/spec/lib/gitlab/diff/file_collection/merge_request_diff_spec.rb b/spec/lib/gitlab/diff/file_collection/merge_request_diff_spec.rb
index 0697594c725..d89be6fef4e 100644
--- a/spec/lib/gitlab/diff/file_collection/merge_request_diff_spec.rb
+++ b/spec/lib/gitlab/diff/file_collection/merge_request_diff_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Diff::FileCollection::MergeRequestDiff do
diff --git a/spec/lib/gitlab/diff/file_spec.rb b/spec/lib/gitlab/diff/file_spec.rb
index cc36060f864..716fc8ae987 100644
--- a/spec/lib/gitlab/diff/file_spec.rb
+++ b/spec/lib/gitlab/diff/file_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Diff::File do
diff --git a/spec/lib/gitlab/diff/formatters/image_formatter_spec.rb b/spec/lib/gitlab/diff/formatters/image_formatter_spec.rb
index 2f99febe04e..2e6eb71d37d 100644
--- a/spec/lib/gitlab/diff/formatters/image_formatter_spec.rb
+++ b/spec/lib/gitlab/diff/formatters/image_formatter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Diff::Formatters::ImageFormatter do
diff --git a/spec/lib/gitlab/diff/formatters/text_formatter_spec.rb b/spec/lib/gitlab/diff/formatters/text_formatter_spec.rb
index 897dc917f6a..33d4994f5db 100644
--- a/spec/lib/gitlab/diff/formatters/text_formatter_spec.rb
+++ b/spec/lib/gitlab/diff/formatters/text_formatter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Diff::Formatters::TextFormatter do
diff --git a/spec/lib/gitlab/diff/highlight_spec.rb b/spec/lib/gitlab/diff/highlight_spec.rb
index 5d0a603d11d..f5d3d14ccc5 100644
--- a/spec/lib/gitlab/diff/highlight_spec.rb
+++ b/spec/lib/gitlab/diff/highlight_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Diff::Highlight do
diff --git a/spec/lib/gitlab/diff/inline_diff_markdown_marker_spec.rb b/spec/lib/gitlab/diff/inline_diff_markdown_marker_spec.rb
index 7e17437fa2a..a668bb464a4 100644
--- a/spec/lib/gitlab/diff/inline_diff_markdown_marker_spec.rb
+++ b/spec/lib/gitlab/diff/inline_diff_markdown_marker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Diff::InlineDiffMarkdownMarker do
diff --git a/spec/lib/gitlab/diff/inline_diff_marker_spec.rb b/spec/lib/gitlab/diff/inline_diff_marker_spec.rb
index 97e65318059..26b99870b31 100644
--- a/spec/lib/gitlab/diff/inline_diff_marker_spec.rb
+++ b/spec/lib/gitlab/diff/inline_diff_marker_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Diff::InlineDiffMarker do
diff --git a/spec/lib/gitlab/diff/inline_diff_spec.rb b/spec/lib/gitlab/diff/inline_diff_spec.rb
index 0a41362f606..fdbee3b4230 100644
--- a/spec/lib/gitlab/diff/inline_diff_spec.rb
+++ b/spec/lib/gitlab/diff/inline_diff_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Diff::InlineDiff do
diff --git a/spec/lib/gitlab/diff/line_mapper_spec.rb b/spec/lib/gitlab/diff/line_mapper_spec.rb
index 42750bf9ea1..1739bcd14a8 100644
--- a/spec/lib/gitlab/diff/line_mapper_spec.rb
+++ b/spec/lib/gitlab/diff/line_mapper_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Diff::LineMapper do
diff --git a/spec/lib/gitlab/diff/line_spec.rb b/spec/lib/gitlab/diff/line_spec.rb
index 76d411973c7..29b9951ba4c 100644
--- a/spec/lib/gitlab/diff/line_spec.rb
+++ b/spec/lib/gitlab/diff/line_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe Gitlab::Diff::Line do
   describe '.init_from_hash' do
     it 'round-trips correctly with to_hash' do
diff --git a/spec/lib/gitlab/diff/parallel_diff_spec.rb b/spec/lib/gitlab/diff/parallel_diff_spec.rb
index e9fc7be366a..7540da71086 100644
--- a/spec/lib/gitlab/diff/parallel_diff_spec.rb
+++ b/spec/lib/gitlab/diff/parallel_diff_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Diff::ParallelDiff do
diff --git a/spec/lib/gitlab/diff/parser_spec.rb b/spec/lib/gitlab/diff/parser_spec.rb
index 80c8c189665..00a446c4e20 100644
--- a/spec/lib/gitlab/diff/parser_spec.rb
+++ b/spec/lib/gitlab/diff/parser_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Diff::Parser do
diff --git a/spec/lib/gitlab/diff/position_spec.rb b/spec/lib/gitlab/diff/position_spec.rb
index b755cd1aff0..399787635c0 100644
--- a/spec/lib/gitlab/diff/position_spec.rb
+++ b/spec/lib/gitlab/diff/position_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Diff::Position do
diff --git a/spec/lib/gitlab/diff/position_tracer_spec.rb b/spec/lib/gitlab/diff/position_tracer_spec.rb
index 79b33d4d276..47d78e0b18c 100644
--- a/spec/lib/gitlab/diff/position_tracer_spec.rb
+++ b/spec/lib/gitlab/diff/position_tracer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Diff::PositionTracer do
diff --git a/spec/lib/gitlab/downtime_check/message_spec.rb b/spec/lib/gitlab/downtime_check/message_spec.rb
index a5a398abf78..2beb5a19a32 100644
--- a/spec/lib/gitlab/downtime_check/message_spec.rb
+++ b/spec/lib/gitlab/downtime_check/message_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::DowntimeCheck::Message do
diff --git a/spec/lib/gitlab/downtime_check_spec.rb b/spec/lib/gitlab/downtime_check_spec.rb
index 1f1e4e0216c..56ad49d528f 100644
--- a/spec/lib/gitlab/downtime_check_spec.rb
+++ b/spec/lib/gitlab/downtime_check_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::DowntimeCheck do
diff --git a/spec/lib/gitlab/email/attachment_uploader_spec.rb b/spec/lib/gitlab/email/attachment_uploader_spec.rb
index 45c690842bc..d66a746284d 100644
--- a/spec/lib/gitlab/email/attachment_uploader_spec.rb
+++ b/spec/lib/gitlab/email/attachment_uploader_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "spec_helper"
 
 describe Gitlab::Email::AttachmentUploader do
diff --git a/spec/lib/gitlab/email/hook/additional_headers_interceptor_spec.rb b/spec/lib/gitlab/email/hook/additional_headers_interceptor_spec.rb
index ae61ece8029..65e4e27d56f 100644
--- a/spec/lib/gitlab/email/hook/additional_headers_interceptor_spec.rb
+++ b/spec/lib/gitlab/email/hook/additional_headers_interceptor_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Email::Hook::AdditionalHeadersInterceptor do
diff --git a/spec/lib/gitlab/email/hook/delivery_metrics_observer_spec.rb b/spec/lib/gitlab/email/hook/delivery_metrics_observer_spec.rb
index 4497d4002da..24da47c42ac 100644
--- a/spec/lib/gitlab/email/hook/delivery_metrics_observer_spec.rb
+++ b/spec/lib/gitlab/email/hook/delivery_metrics_observer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Email::Hook::DeliveryMetricsObserver do
diff --git a/spec/lib/gitlab/email/hook/disable_email_interceptor_spec.rb b/spec/lib/gitlab/email/hook/disable_email_interceptor_spec.rb
index 91aa3bc7c2e..0c58cf088cc 100644
--- a/spec/lib/gitlab/email/hook/disable_email_interceptor_spec.rb
+++ b/spec/lib/gitlab/email/hook/disable_email_interceptor_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Email::Hook::DisableEmailInterceptor do
diff --git a/spec/lib/gitlab/email/message/repository_push_spec.rb b/spec/lib/gitlab/email/message/repository_push_spec.rb
index 0ec1f931037..84c5b38127e 100644
--- a/spec/lib/gitlab/email/message/repository_push_spec.rb
+++ b/spec/lib/gitlab/email/message/repository_push_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Email::Message::RepositoryPush do
diff --git a/spec/lib/gitlab/email/receiver_spec.rb b/spec/lib/gitlab/email/receiver_spec.rb
index 0af978eced3..c9fde06cbae 100644
--- a/spec/lib/gitlab/email/receiver_spec.rb
+++ b/spec/lib/gitlab/email/receiver_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::Email::Receiver do
diff --git a/spec/lib/gitlab/email/reply_parser_spec.rb b/spec/lib/gitlab/email/reply_parser_spec.rb
index 376d3accd55..646575b2edd 100644
--- a/spec/lib/gitlab/email/reply_parser_spec.rb
+++ b/spec/lib/gitlab/email/reply_parser_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "spec_helper"
 
 # Inspired in great part by Discourse's Email::Receiver
diff --git a/spec/lib/gitlab/encoding_helper_spec.rb b/spec/lib/gitlab/encoding_helper_spec.rb
index 88ea98eb1e1..86e8db3bc15 100644
--- a/spec/lib/gitlab/encoding_helper_spec.rb
+++ b/spec/lib/gitlab/encoding_helper_spec.rb
@@ -1,4 +1,6 @@
 # coding: utf-8
+# frozen_string_literal: true
+
 require "spec_helper"
 
 describe Gitlab::EncodingHelper do
diff --git a/spec/lib/gitlab/etag_caching/middleware_spec.rb b/spec/lib/gitlab/etag_caching/middleware_spec.rb
index 4a54d641b4e..9ead55075fa 100644
--- a/spec/lib/gitlab/etag_caching/middleware_spec.rb
+++ b/spec/lib/gitlab/etag_caching/middleware_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::EtagCaching::Middleware do
diff --git a/spec/lib/gitlab/etag_caching/router_spec.rb b/spec/lib/gitlab/etag_caching/router_spec.rb
index a7cb0bb2a87..fbc49d894a6 100644
--- a/spec/lib/gitlab/etag_caching/router_spec.rb
+++ b/spec/lib/gitlab/etag_caching/router_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'spec_helper'
 
 describe Gitlab::EtagCaching::Router do