Merge branch 'jira-mr-merge-api-check' into 'master'

Prevents MR merge when jira issue requirement is enforced

See merge request gitlab-org/gitlab!55710

ee/app/models/ee/project.rb

@@ -782,6 +782,10 @@ def add_template_export_job(current_user:, after_export_strategy: nil, params: {
       end
     end
+    def prevent_merge_without_jira_issue?
+      jira_issue_association_required_to_merge_enabled? && prevent_merge_without_jira_issue
+    end
+
     private
     def group_hooks

ee/app/services/ee/merge_requests/merge_base_service.rb

@@ -9,6 +9,7 @@ module MergeBaseService
       def error_check!
         check_size_limit
         check_blocking_mrs
+        check_jira_issue_enforcement
       end
       override :hooks_validation_pass?
@@ -61,6 +62,13 @@ def check_blocking_mrs
         raise ::MergeRequests::MergeService::MergeError, _('Other merge requests block this MR')
       end
+
+      def check_jira_issue_enforcement
+        return unless merge_request.project.prevent_merge_without_jira_issue?
+        return if Atlassian::JiraIssueKeyExtractor.has_keys?(merge_request.title, merge_request.description)
+
+        raise ::MergeRequests::MergeService::MergeError, _('Before this can be merged, a Jira issue must be linked in the title or description')
+      end
     end
   end
 end

ee/spec/models/project_spec.rb

@@ -2775,6 +2775,28 @@ def stub_default_url_options(host)
     end
   end
+  describe '#prevent_merge_without_jira_issue?' do
+    using RSpec::Parameterized::TableSyntax
+
+    subject { project.prevent_merge_without_jira_issue? }
+
+    where(:feature_available, :prevent_merge, :result) do
+      true  | true  | true
+      true  | false | false
+      false | true  | false
+      false | false | false
+    end
+
+    with_them do
+      before do
+        allow(project).to receive(:jira_issue_association_required_to_merge_enabled?).and_return(feature_available)
+        project.create_project_setting(prevent_merge_without_jira_issue: prevent_merge)
+      end
+
+      it { is_expected.to be result }
+    end
+  end
+
   context 'indexing updates in Elasticsearch', :elastic do
     before do
       stub_ee_application_setting(elasticsearch_indexing: true)

ee/spec/services/merge_requests/merge_service_spec.rb

@@ -43,6 +43,39 @@
         expect(rule.approved_approvers).to contain_exactly(approver)
       end
     end
+
+    context 'with jira issue enforcement' do
+      using RSpec::Parameterized::TableSyntax
+
+      subject do
+        perform_enqueued_jobs do
+          service.execute(merge_request)
+        end
+      end
+
+      where(:prevent_merge, :issue_specified, :merged) do
+        true  | true  | true
+        true  | false | false
+        false | true  | true
+        false | false | true
+      end
+
+      with_them do
+        before do
+          allow(project).to receive(:prevent_merge_without_jira_issue?).and_return(prevent_merge)
+          allow(Atlassian::JiraIssueKeyExtractor).to receive(:has_keys?)
+                                                       .with(merge_request.title, merge_request.description)
+                                                       .and_return(issue_specified)
+        end
+
+        it 'sets the correct merged state and raises an error when applicable', :aggregate_failures do
+          subject
+
+          expect(merge_request.reload.merged?).to eq(merged)
+          expect(merge_request.merge_error).to include('Before this can be merged, a Jira issue must be linked in the title or description') unless merged
+        end
+      end
+    end
   end
   it_behaves_like 'merge validation hooks', persisted: true

locale/gitlab.pot

@@ -4666,6 +4666,9 @@ msgstr ""
 msgid "Be careful. Renaming a project's repository can have unintended side effects."
 msgstr ""
+msgid "Before this can be merged, a Jira issue must be linked in the title or description"
+msgstr ""
+
 msgid "Begin with the selected commit"
 msgstr ""