Remove codequality_backend_comparison feature flag [RUN ALL RSPEC] [RUN AS-IF-FOSS]

app/assets/javascripts/reports/codequality_report/grouped_codequality_reports_app.vue

@@ -62,7 +62,7 @@ export default {
       helpPath: this.codequalityHelpPath,
     });
 
-    this.fetchReports(this.glFeatures.codequalityBackendComparison);
+    this.fetchReports();
   },
   methods: {
     ...mapActions(['fetchReports', 'setPaths']),

app/controllers/projects/merge_requests_controller.rb

@@ -37,7 +37,6 @@ class Projects::MergeRequestsController < Projects::MergeRequests::ApplicationCo
     push_frontend_feature_flag(:default_merge_ref_for_diffs, @project, default_enabled: :yaml)
     push_frontend_feature_flag(:core_security_mr_widget_counts, @project)
     push_frontend_feature_flag(:diffs_gradual_load, @project, default_enabled: true)
-    push_frontend_feature_flag(:codequality_backend_comparison, @project, default_enabled: :yaml)
     push_frontend_feature_flag(:local_file_reviews, default_enabled: :yaml)
     push_frontend_feature_flag(:paginated_notes, @project, default_enabled: :yaml)
     push_frontend_feature_flag(:new_pipelines_table, @project, default_enabled: :yaml)

app/models/merge_request.rb

@@ -37,7 +37,7 @@ class MergeRequest < ApplicationRecord
   SORTING_PREFERENCE_FIELD = :merge_requests_sort
 
   ALLOWED_TO_USE_MERGE_BASE_PIPELINE_FOR_COMPARISON = {
-    'Ci::CompareCodequalityReportsService' => ->(project) { ::Gitlab::Ci::Features.display_codequality_backend_comparison?(project) }
+    'Ci::CompareCodequalityReportsService' => ->(project) { true }
   }.freeze
 
   belongs_to :target_project, class_name: "Project"
@@ -1564,8 +1564,6 @@ class MergeRequest < ApplicationRecord
   end
 
   def has_codequality_reports?
-    return false unless ::Gitlab::Ci::Features.display_codequality_backend_comparison?(project)
-
     actual_head_pipeline&.has_reports?(Ci::JobArtifact.codequality_reports)
   end
 

changelogs/unreleased/mo-remove-codequality-backend-ff.yml

+---
+title: Remove codequality_backend_comparison feature flag
+merge_request: 59320
+author:
+type: added

config/feature_flags/development/codequality_backend_comparison.yml

----
-name: codequality_backend_comparison
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/53068
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/300796
-milestone: '13.9'
-type: development
-group: group::testing
-default_enabled: true

doc/user/project/merge_requests/code_quality.md

@@ -571,3 +571,8 @@ plugins:
     enabled: true
     channel: rubocop-0-67
 ```
+
+### No Code Quality appears on merge requests when using custom tool
+
+If your merge requests do not show any code quality changes when using a custom tool,
+ensure that the line property is an `integer`.

lib/gitlab/ci/features.rb

@@ -56,10 +56,6 @@ module Gitlab
         ::Feature.enabled?(:codequality_mr_diff, project, default_enabled: false)
       end
 
-      def self.display_codequality_backend_comparison?(project)
-        ::Feature.enabled?(:codequality_backend_comparison, project, default_enabled: :yaml)
-      end
-
       def self.multiple_cache_per_job?
         ::Feature.enabled?(:multiple_cache_per_job, default_enabled: :yaml)
       end

spec/models/merge_request_spec.rb

@@ -2053,14 +2053,6 @@ RSpec.describe MergeRequest, factory_default: :keep do
       let(:merge_request) { create(:merge_request, :with_codequality_reports, source_project: project) }
 
       it { is_expected.to be_truthy }
-
-      context 'when feature flag is disabled' do
-        before do
-          stub_feature_flags(codequality_backend_comparison: false)
-        end
-
-        it { is_expected.to be_falsey }
-      end
     end
 
     context 'when head pipeline does not have a codequality report' do
@@ -3887,17 +3879,7 @@ RSpec.describe MergeRequest, factory_default: :keep do
     context 'when service class is Ci::CompareCodequalityReportsService' do
       let(:service_class) { 'Ci::CompareCodequalityReportsService' }
 
-      context 'when feature flag is enabled' do
-        it { is_expected.to be_truthy }
-      end
-
-      context 'when feature flag is disabled' do
-        before do
-          stub_feature_flags(codequality_backend_comparison: false)
-        end
-
-        it { is_expected.to be_falsey }
-      end
+      it { is_expected.to be_truthy }
     end
 
     context 'when service class is different' do