Change issue show page to group MRs by projects and namespaces

Closes #26466.

1 files changed, 35 insertions, 0 deletions

diff --git a/spec/services/issues/fetch_referenced_merge_requests_service_spec.rb b/spec/services/issues/fetch_referenced_merge_requests_service_spec.rb
new file mode 100644
index 00000000000..4e58179f45f
--- /dev/null
+++ b/spec/services/issues/fetch_referenced_merge_requests_service_spec.rb
@@ -0,0 +1,35 @@
+require 'spec_helper.rb'
+
+describe Issues::FetchReferencedMergeRequestsService do
+  let(:project) { create(:project) }
+  let(:issue) { create(:issue, project: project) }
+  let(:other_project) { create(:project) }
+
+  let(:mr) { create(:merge_request, source_project: project, target_project: project, id: 2)}
+  let(:other_mr) { create(:merge_request, source_project: other_project, target_project: other_project, id: 1)}
+
+  let(:user) { create(:user) }
+  let(:service) { described_class.new(project, user) }
+
+  context 'with mentioned merge requests' do
+    it 'returns a list of sorted merge requests' do
+      allow(issue).to receive(:referenced_merge_requests).with(user).and_return([other_mr, mr])
+
+      mrs, closed_by_mrs = service.execute(issue)
+
+      expect(mrs).to match_array([mr, other_mr])
+      expect(closed_by_mrs).to match_array([])
+    end
+  end
+
+  context 'with closed-by merge requests' do
+    it 'returns a list of sorted merge requests' do
+      allow(issue).to receive(:closed_by_merge_requests).with(user).and_return([other_mr, mr])
+
+      mrs, closed_by_mrs = service.execute(issue)
+
+      expect(mrs).to match_array([])
+      expect(closed_by_mrs).to match_array([mr, other_mr])
+    end
+  end
+end