1 files changed, 20 insertions, 2 deletions
diff --git a/spec/models/ci/pipeline_spec.rb b/spec/models/ci/pipeline_spec.rb
index 72a0df96a80..460b5c8cd31 100644
--- a/spec/models/ci/pipeline_spec.rb
+++ b/spec/models/ci/pipeline_spec.rb
@@ -1172,8 +1172,26 @@ describe Ci::Pipeline, :mailer do
         pipeline.update_column(:before_sha, Gitlab::Git::BLANK_SHA)
       end
 
-      it 'raises an error' do
-        expect { pipeline.modified_paths }.to raise_error(ArgumentError)
+      it 'returns nil' do
+        expect(pipeline.modified_paths).to be_nil
+      end
+    end
+
+    context 'when source is merge request' do
+      let(:pipeline) do
+        create(:ci_pipeline, source: :merge_request, merge_request: merge_request)
+      end
+
+      let(:merge_request) do
+        create(:merge_request,
+               source_project: project,
+               source_branch: 'feature',
+               target_project: project,
+               target_branch: 'master')
+      end
+
+      it 'returns merge request modified paths' do
+        expect(pipeline.modified_paths).to match(merge_request.modified_paths)
       end
     end
   end