Enable frozen string in vestigial app files

Partially addresses #47424.

20 files changed, 43 insertions, 0 deletions

diff --git a/app/presenters/ci/build_runner_presenter.rb b/app/presenters/ci/build_runner_presenter.rb
index 02f6c5bdf81..880218e2727 100644
--- a/app/presenters/ci/build_runner_presenter.rb
+++ b/app/presenters/ci/build_runner_presenter.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Ci
   class BuildRunnerPresenter < SimpleDelegator
     def artifacts
diff --git a/app/serializers/project_mirror_serializer.rb b/app/serializers/project_mirror_serializer.rb
index 7e9ba592252..6a9462aa7cb 100644
--- a/app/serializers/project_mirror_serializer.rb
+++ b/app/serializers/project_mirror_serializer.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ProjectMirrorSerializer < BaseSerializer
   entity ProjectMirrorEntity
 end
diff --git a/app/serializers/test_case_entity.rb b/app/serializers/test_case_entity.rb
index 5c1cbf37182..ec60055ba5b 100644
--- a/app/serializers/test_case_entity.rb
+++ b/app/serializers/test_case_entity.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class TestCaseEntity < Grape::Entity
   expose :status
   expose :name
diff --git a/app/serializers/test_reports_comparer_entity.rb b/app/serializers/test_reports_comparer_entity.rb
index b95d820d093..d7a3dd34fdc 100644
--- a/app/serializers/test_reports_comparer_entity.rb
+++ b/app/serializers/test_reports_comparer_entity.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class TestReportsComparerEntity < Grape::Entity
   expose :total_status, as: :status
 
diff --git a/app/serializers/test_reports_comparer_serializer.rb b/app/serializers/test_reports_comparer_serializer.rb
index a739858efb2..7fb8d28b09a 100644
--- a/app/serializers/test_reports_comparer_serializer.rb
+++ b/app/serializers/test_reports_comparer_serializer.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class TestReportsComparerSerializer < BaseSerializer
   entity TestReportsComparerEntity
 end
diff --git a/app/serializers/test_suite_comparer_entity.rb b/app/serializers/test_suite_comparer_entity.rb
index a3965ba3930..9fa3a897ebe 100644
--- a/app/serializers/test_suite_comparer_entity.rb
+++ b/app/serializers/test_suite_comparer_entity.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class TestSuiteComparerEntity < Grape::Entity
   expose :name
   expose :total_status, as: :status
diff --git a/app/services/projects/detect_repository_languages_service.rb b/app/services/projects/detect_repository_languages_service.rb
index 4b4108de231..3488b9ce47e 100644
--- a/app/services/projects/detect_repository_languages_service.rb
+++ b/app/services/projects/detect_repository_languages_service.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Projects
   class DetectRepositoryLanguagesService < BaseService
     attr_reader :detected_repository_languages, :programming_languages
diff --git a/app/services/todos/destroy/base_service.rb b/app/services/todos/destroy/base_service.rb
index dff5e1f30e5..aeb60e50c64 100644
--- a/app/services/todos/destroy/base_service.rb
+++ b/app/services/todos/destroy/base_service.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Todos
   module Destroy
     class BaseService
diff --git a/app/services/todos/destroy/confidential_issue_service.rb b/app/services/todos/destroy/confidential_issue_service.rb
index c5b66df057a..efec0f22da5 100644
--- a/app/services/todos/destroy/confidential_issue_service.rb
+++ b/app/services/todos/destroy/confidential_issue_service.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Todos
   module Destroy
     class ConfidentialIssueService < ::Todos::Destroy::BaseService
diff --git a/app/services/todos/destroy/entity_leave_service.rb b/app/services/todos/destroy/entity_leave_service.rb
index 045f5ecaae7..4cb9d08713d 100644
--- a/app/services/todos/destroy/entity_leave_service.rb
+++ b/app/services/todos/destroy/entity_leave_service.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Todos
   module Destroy
     class EntityLeaveService < ::Todos::Destroy::BaseService
diff --git a/app/services/todos/destroy/group_private_service.rb b/app/services/todos/destroy/group_private_service.rb
index d13fa7a6516..f67f1d40597 100644
--- a/app/services/todos/destroy/group_private_service.rb
+++ b/app/services/todos/destroy/group_private_service.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Todos
   module Destroy
     class GroupPrivateService < ::Todos::Destroy::BaseService
diff --git a/app/services/todos/destroy/private_features_service.rb b/app/services/todos/destroy/private_features_service.rb
index 4d8e2877bfb..7e204885b31 100644
--- a/app/services/todos/destroy/private_features_service.rb
+++ b/app/services/todos/destroy/private_features_service.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Todos
   module Destroy
     class PrivateFeaturesService < ::Todos::Destroy::BaseService
diff --git a/app/services/todos/destroy/project_private_service.rb b/app/services/todos/destroy/project_private_service.rb
index 315a0c33398..ae8fab3ffca 100644
--- a/app/services/todos/destroy/project_private_service.rb
+++ b/app/services/todos/destroy/project_private_service.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Todos
   module Destroy
     class ProjectPrivateService < ::Todos::Destroy::BaseService
diff --git a/app/workers/detect_repository_languages_worker.rb b/app/workers/detect_repository_languages_worker.rb
index 537b8fd5963..cfbbbffc8a6 100644
--- a/app/workers/detect_repository_languages_worker.rb
+++ b/app/workers/detect_repository_languages_worker.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class DetectRepositoryLanguagesWorker
   include ApplicationWorker
   include ExceptionBacktrace
diff --git a/app/workers/todos_destroyer/confidential_issue_worker.rb b/app/workers/todos_destroyer/confidential_issue_worker.rb
index 9d640c14963..481fde8c83d 100644
--- a/app/workers/todos_destroyer/confidential_issue_worker.rb
+++ b/app/workers/todos_destroyer/confidential_issue_worker.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module TodosDestroyer
   class ConfidentialIssueWorker
     include ApplicationWorker
diff --git a/app/workers/todos_destroyer/entity_leave_worker.rb b/app/workers/todos_destroyer/entity_leave_worker.rb
index e62d9876f4a..7db3f6c84b4 100644
--- a/app/workers/todos_destroyer/entity_leave_worker.rb
+++ b/app/workers/todos_destroyer/entity_leave_worker.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module TodosDestroyer
   class EntityLeaveWorker
     include ApplicationWorker
diff --git a/app/workers/todos_destroyer/group_private_worker.rb b/app/workers/todos_destroyer/group_private_worker.rb
index 3e47eec7461..21ec4abe478 100644
--- a/app/workers/todos_destroyer/group_private_worker.rb
+++ b/app/workers/todos_destroyer/group_private_worker.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module TodosDestroyer
   class GroupPrivateWorker
     include ApplicationWorker
diff --git a/app/workers/todos_destroyer/private_features_worker.rb b/app/workers/todos_destroyer/private_features_worker.rb
index f457d5e0471..1e68f0fd5ae 100644
--- a/app/workers/todos_destroyer/private_features_worker.rb
+++ b/app/workers/todos_destroyer/private_features_worker.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module TodosDestroyer
   class PrivateFeaturesWorker
     include ApplicationWorker
diff --git a/app/workers/todos_destroyer/project_private_worker.rb b/app/workers/todos_destroyer/project_private_worker.rb
index 7a853c36370..064e001530c 100644
--- a/app/workers/todos_destroyer/project_private_worker.rb
+++ b/app/workers/todos_destroyer/project_private_worker.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module TodosDestroyer
   class ProjectPrivateWorker
     include ApplicationWorker
diff --git a/changelogs/unreleased/frozen-string-enable-app-vestigial.yml b/changelogs/unreleased/frozen-string-enable-app-vestigial.yml
new file mode 100644
index 00000000000..8cb7bd43784
--- /dev/null
+++ b/changelogs/unreleased/frozen-string-enable-app-vestigial.yml
@@ -0,0 +1,5 @@
+---
+title: Enable frozen string in vestigial app files
+merge_request:
+author: gfyoung
+type: performance