Introduce new ProjectCiCdSetting10244-add-project-ci-cd-settings

This model and the corresponding table will be used for storing settings
specific to CI/CD, starting with the "group_runners_enabled" boolean.

The model is called ProjectCiCdSetting and not ProjectCiCdSettings. The
project exporter doesn't like plural model names as it uses "classify"
which turns those into singular (so "ProjectCiCdSettings" becomes
"ProjectCiCdSetting", producing an error if said class is undefined).

The initial work in this commit was done by Dylan Griffith, with most of
the migration work being done by Yorick Peterse.

4 files changed, 36 insertions, 0 deletions

diff --git a/spec/lib/gitlab/import_export/all_models.yml b/spec/lib/gitlab/import_export/all_models.yml
index 897a5984782..e7f20f81fe0 100644
--- a/spec/lib/gitlab/import_export/all_models.yml
+++ b/spec/lib/gitlab/import_export/all_models.yml
@@ -286,6 +286,7 @@ project:
 - internal_ids
 - project_deploy_tokens
 - deploy_tokens
+- ci_cd_settings
 award_emoji:
 - awardable
 - user
diff --git a/spec/lib/gitlab/import_export/safe_model_attributes.yml b/spec/lib/gitlab/import_export/safe_model_attributes.yml
index f84a777a27f..c429d3c4ee1 100644
--- a/spec/lib/gitlab/import_export/safe_model_attributes.yml
+++ b/spec/lib/gitlab/import_export/safe_model_attributes.yml
@@ -552,3 +552,5 @@ Badge:
 - created_at
 - updated_at
 - type
+ProjectCiCdSetting:
+- group_runners_enabled
diff --git a/spec/models/project_ci_cd_setting_spec.rb b/spec/models/project_ci_cd_setting_spec.rb
new file mode 100644
index 00000000000..4aa62028169
--- /dev/null
+++ b/spec/models/project_ci_cd_setting_spec.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe ProjectCiCdSetting do
+  describe '.available?' do
+    before do
+      described_class.reset_column_information
+    end
+
+    it 'returns true' do
+      expect(described_class).to be_available
+    end
+
+    it 'memoizes the schema version' do
+      expect(ActiveRecord::Migrator)
+        .to receive(:current_version)
+        .and_call_original
+        .once
+
+      2.times { described_class.available? }
+    end
+  end
+end
diff --git a/spec/models/project_spec.rb b/spec/models/project_spec.rb
index 2675c2f52c1..65b769bcba0 100644
--- a/spec/models/project_spec.rb
+++ b/spec/models/project_spec.rb
@@ -93,6 +93,15 @@ describe Project do
       end
     end
 
+    context 'when creating a new project' do
+      it 'automatically creates a CI/CD settings row' do
+        project = create(:project)
+
+        expect(project.ci_cd_settings).to be_an_instance_of(ProjectCiCdSetting)
+        expect(project.ci_cd_settings).to be_persisted
+      end
+    end
+
     describe '#members & #requesters' do
       let(:project) { create(:project, :public, :access_requestable) }
       let(:requester) { create(:user) }