1 files changed, 18 insertions, 0 deletions
diff --git a/spec/workers/merge_worker_spec.rb b/spec/workers/merge_worker_spec.rb
index 417e6edce96..0268bc2388f 100644
--- a/spec/workers/merge_worker_spec.rb
+++ b/spec/workers/merge_worker_spec.rb
@@ -29,5 +29,23 @@ RSpec.describe MergeWorker do
       source_project.repository.expire_branches_cache
       expect(source_project.repository.branch_names).not_to include('markdown')
     end
+
+    it_behaves_like 'an idempotent worker' do
+      let(:job_args) do
+        [
+          merge_request.id,
+          merge_request.author_id,
+          commit_message: 'wow such merge',
+          sha: merge_request.diff_head_sha
+        ]
+      end
+
+      it 'the merge request is still shown as merged' do
+        subject
+
+        merge_request.reload
+        expect(merge_request).to be_merged
+      end
+    end
   end
 end