2 files changed, 29 insertions, 0 deletions
diff --git a/spec/services/merge_requests/conflicts/list_service_spec.rb b/spec/services/merge_requests/conflicts/list_service_spec.rb
index 97da8a88660..d57852615d9 100644
--- a/spec/services/merge_requests/conflicts/list_service_spec.rb
+++ b/spec/services/merge_requests/conflicts/list_service_spec.rb
@@ -84,5 +84,23 @@ describe MergeRequests::Conflicts::ListService do
 
       expect(service.can_be_resolved_in_ui?).to be_falsey
     end
+
+    context 'with gitaly disabled', :skip_gitaly_mock do
+      it 'returns a falsey value when the MR has a missing ref after a force push' do
+        merge_request = create_merge_request('conflict-resolvable')
+        service = conflicts_service(merge_request)
+        allow_any_instance_of(Rugged::Repository).to receive(:merge_commits).and_raise(Rugged::OdbError)
+
+        expect(service.can_be_resolved_in_ui?).to be_falsey
+      end
+
+      it 'returns a falsey value when the MR has a missing revision after a force push' do
+        merge_request = create_merge_request('conflict-resolvable')
+        service = conflicts_service(merge_request)
+        allow(merge_request).to receive_message_chain(:target_branch_head, :raw, :id).and_return(Gitlab::Git::BLANK_SHA)
+
+        expect(service.can_be_resolved_in_ui?).to be_falsey
+      end
+    end
   end
 end
diff --git a/spec/services/merge_requests/conflicts/resolve_service_spec.rb b/spec/services/merge_requests/conflicts/resolve_service_spec.rb
index 7edf8a96c94..cff09237005 100644
--- a/spec/services/merge_requests/conflicts/resolve_service_spec.rb
+++ b/spec/services/merge_requests/conflicts/resolve_service_spec.rb
@@ -123,6 +123,17 @@ describe MergeRequests::Conflicts::ResolveService do
           expect(merge_request_from_fork.source_branch_head.parents.map(&:id))
             .to eq(['404fa3fc7c2c9b5dacff102f353bdf55b1be2813', target_head])
         end
+
+        context 'when gitaly is disabled', :skip_gitaly_mock do
+          it 'gets conflicts from the source project' do
+            # REFACTOR NOTE: We used to test that `project.repository.rugged` wasn't
+            # used in this case, but since the refactor, for simplification,
+            # we always use that repository for read only operations.
+            expect(forked_project.repository.rugged).to receive(:merge_commits).and_call_original
+
+            subject
+          end
+        end
       end
     end