1 files changed, 14 insertions, 3 deletions
diff --git a/spec/services/merge_requests/merge_service_spec.rb b/spec/services/merge_requests/merge_service_spec.rb
index 2f72cd60071..159f6817e8d 100644
--- a/spec/services/merge_requests/merge_service_spec.rb
+++ b/spec/services/merge_requests/merge_service_spec.rb
@@ -11,7 +11,7 @@ describe MergeRequests::MergeService, services: true do
     project.team << [user2, :developer]
   end
 
-  describe :execute do
+  describe '#execute' do
     context 'valid params' do
       let(:service) { MergeRequests::MergeService.new(project, user, commit_message: 'Awesome message') }
 
@@ -26,13 +26,13 @@ describe MergeRequests::MergeService, services: true do
       it { expect(merge_request).to be_valid }
       it { expect(merge_request).to be_merged }
 
-      it 'should send email to user2 about merge of new merge_request' do
+      it 'sends email to user2 about merge of new merge_request' do
         email = ActionMailer::Base.deliveries.last
         expect(email.to.first).to eq(user2.email)
         expect(email.subject).to include(merge_request.title)
       end
 
-      it 'should create system note about merge_request merge' do
+      it 'creates system note about merge_request merge' do
         note = merge_request.notes.last
         expect(note.note).to include 'Status changed to merged'
       end
@@ -75,6 +75,17 @@ describe MergeRequests::MergeService, services: true do
 
         expect(merge_request.merge_error).to eq("error")
       end
+
+      it 'aborts if there is a merge conflict' do
+        allow_any_instance_of(Repository).to receive(:merge).and_return(false)
+        allow(service).to receive(:execute_hooks)
+
+        service.execute(merge_request)
+
+        expect(merge_request.open?).to be_truthy
+        expect(merge_request.merge_commit_sha).to be_nil
+        expect(merge_request.merge_error).to eq("Conflicts detected during merge")
+      end
     end
   end
 end