Merge branch 'ce-6127-move-merge-requests-services' into 'master'

CE: Extract EE specific files/lines for some merge requests files

See merge request gitlab-org/gitlab-ce!19107

app/services/merge_requests/refresh_service.rb

@@ -3,6 +3,12 @@ module MergeRequests
     def execute(oldrev, newrev, ref)
       return true unless Gitlab::Git.branch_ref?(ref)
 
+      do_execute(oldrev, newrev, ref)
+    end
+
+    private
+
+    def do_execute(oldrev, newrev, ref)
       @oldrev, @newrev = oldrev, newrev
       @branch_name = Gitlab::Git.ref_name(ref)
 
@@ -28,8 +34,6 @@ module MergeRequests
       true
     end
 
-    private
-
     def close_upon_missing_source_branch_ref
       # MergeRequest#reload_diff ignores not opened MRs. This means it won't
       # create an `empty` diff for `closed` MRs without a source branch, keeping

spec/workers/update_merge_requests_worker_spec.rb

@@ -18,8 +18,13 @@ describe UpdateMergeRequestsWorker do
     end
 
     it 'executes MergeRequests::RefreshService with expected values' do
-      expect(MergeRequests::RefreshService).to receive(:new).with(project, user).and_call_original
-      expect_any_instance_of(MergeRequests::RefreshService).to receive(:execute).with(oldrev, newrev, ref)
+      expect(MergeRequests::RefreshService).to receive(:new)
+        .with(project, user).and_wrap_original do |method, *args|
+          method.call(*args).tap do |refresh_service|
+            expect(refresh_service)
+              .to receive(:execute).with(oldrev, newrev, ref)
+          end
+        end
 
       perform
     end