1 files changed, 24 insertions, 0 deletions
diff --git a/spec/requests/api/runner_spec.rb b/spec/requests/api/runner_spec.rb
index 909703a8d47..b36087b86a7 100644
--- a/spec/requests/api/runner_spec.rb
+++ b/spec/requests/api/runner_spec.rb
@@ -830,6 +830,18 @@ describe API::Runner, :clean_gitlab_redis_shared_state do
           expect(job.trace.raw).to eq 'BUILD TRACE UPDATED'
           expect(job.job_artifacts_trace.open.read).to eq 'BUILD TRACE UPDATED'
         end
+
+        context 'when concurrent update of trace is happening' do
+          before do
+            job.trace.write('wb') do
+              update_job(state: 'success', trace: 'BUILD TRACE UPDATED')
+            end
+          end
+
+          it 'returns that operation conflicts' do
+            expect(response.status).to eq(409)
+          end
+        end
       end
 
       context 'when no trace is given' do
@@ -1022,6 +1034,18 @@ describe API::Runner, :clean_gitlab_redis_shared_state do
           end
         end
 
+        context 'when concurrent update of trace is happening' do
+          before do
+            job.trace.write('wb') do
+              patch_the_trace
+            end
+          end
+
+          it 'returns that operation conflicts' do
+            expect(response.status).to eq(409)
+          end
+        end
+
         context 'when the job is canceled' do
           before do
             job.cancel