add spec for forked project

spec/ee/spec/controllers/projects/merge_requests_controller_spec.rb

 require 'spec_helper'
 
-describe Projects::MergeRequestsController do
-  let(:project)       { create(:project, :repository) }
-  let(:merge_request) { create(:merge_request_with_diffs, target_project: project, source_project: project) }
-  let(:user)          { project.owner }
-  let(:viewer)        { user }
+shared_examples 'approvals' do
+  def json_response
+    JSON.parse(response.body)
+  end
+
+  let(:approver) { create(:user) }
 
   before do
-    sign_in(viewer)
+    merge_request.update_attribute :approvals_before_merge, 2
+    project.team << [approver, :developer]
+    project.approver_ids = [user, approver].map(&:id).join(',')
   end
 
-  context 'approvals' do
-    def json_response
-      JSON.parse(response.body)
+  describe 'approve' do
+    before do
+      post :approve,
+           namespace_id: project.namespace.to_param,
+           project_id: project.to_param,
+           id: merge_request.iid,
+           format: :json
     end
 
-    let(:approver) { create(:user) }
-
-    before do
-      merge_request.update_attribute :approvals_before_merge, 2
-      project.team << [approver, :developer]
-      project.approver_ids = [user, approver].map(&:id).join(',')
+    it 'approves the merge request' do
+      expect(response).to be_success
+      expect(json_response['approvals_left']).to eq 1
+      expect(json_response['approved_by'].size).to eq 1
+      expect(json_response['approved_by'][0]['user']['username']).to eq user.username
+      expect(json_response['user_has_approved']).to be true
+      expect(json_response['user_can_approve']).to be false
+      expect(json_response['suggested_approvers'].size).to eq 1
+      expect(json_response['suggested_approvers'][0]['username']).to eq approver.username
     end
+  end
 
-    describe 'approve' do
-      before do
-        post :approve,
+  describe 'approvals' do
+    before do
+      merge_request.approvals.create(user: approver)
+      get :approvals,
           namespace_id: project.namespace.to_param,
           project_id: project.to_param,
           id: merge_request.iid,
           format: :json
-      end
+    end
 
-      it 'approves the merge request' do
-        expect(response).to be_success
-        expect(json_response['approvals_left']).to eq 1
-        expect(json_response['approved_by'].size).to eq 1
-        expect(json_response['approved_by'][0]['user']['username']).to eq user.username
-        expect(json_response['user_has_approved']).to be true
-        expect(json_response['user_can_approve']).to be false
-        expect(json_response['suggested_approvers'].size).to eq 1
-        expect(json_response['suggested_approvers'][0]['username']).to eq approver.username
-      end
+    it 'shows approval information' do
+      expect(response).to be_success
+      expect(json_response['approvals_left']).to eq 1
+      expect(json_response['approved_by'].size).to eq 1
+      expect(json_response['approved_by'][0]['user']['username']).to eq approver.username
+      expect(json_response['user_has_approved']).to be false
+      expect(json_response['user_can_approve']).to be true
+      expect(json_response['suggested_approvers'].size).to eq 1
+      expect(json_response['suggested_approvers'][0]['username']).to eq user.username
     end
+  end
 
-    describe 'approvals' do
-      before do
-        merge_request.approvals.create(user: approver)
-        get :approvals,
-          namespace_id: project.namespace.to_param,
-          project_id: project.to_param,
-          id: merge_request.iid,
-          format: :json
-      end
+  describe 'unapprove' do
+    before do
+      merge_request.approvals.create(user: user)
+      delete :unapprove,
+             namespace_id: project.namespace.to_param,
+             project_id: project.to_param,
+             id: merge_request.iid,
+             format: :json
+    end
 
-      it 'shows approval information' do
-        expect(response).to be_success
-        expect(json_response['approvals_left']).to eq 1
-        expect(json_response['approved_by'].size).to eq 1
-        expect(json_response['approved_by'][0]['user']['username']).to eq approver.username
-        expect(json_response['user_has_approved']).to be false
-        expect(json_response['user_can_approve']).to be true
-        expect(json_response['suggested_approvers'].size).to eq 1
-        expect(json_response['suggested_approvers'][0]['username']).to eq user.username
-      end
+    it 'unapproves the merge request' do
+      expect(response).to be_success
+      expect(json_response['approvals_left']).to eq 2
+      expect(json_response['approved_by']).to be_empty
+      expect(json_response['user_has_approved']).to be false
+      expect(json_response['user_can_approve']).to be true
+      expect(json_response['suggested_approvers'].size).to eq 2
     end
+  end
+end
 
-    describe 'unapprove' do
-      before do
-        merge_request.approvals.create(user: user)
-        delete :unapprove,
-          namespace_id: project.namespace.to_param,
-          project_id: project.to_param,
-          id: merge_request.iid,
-          format: :json
-      end
+describe Projects::MergeRequestsController do
+  let(:project)       { create(:project, :repository) }
+  let(:merge_request) { create(:merge_request_with_diffs, target_project: project, source_project: project) }
+  let(:user)          { project.owner }
+  let(:viewer)        { user }
 
-      it 'unapproves the merge request' do
-        expect(response).to be_success
-        expect(json_response['approvals_left']).to eq 2
-        expect(json_response['approved_by']).to be_empty
-        expect(json_response['user_has_approved']).to be false
-        expect(json_response['user_can_approve']).to be true
-        expect(json_response['suggested_approvers'].size).to eq 2
-      end
-    end
+  before do
+    sign_in(viewer)
   end
 
+  it_behaves_like 'approvals'
+
   describe 'PUT update' do
     def update_merge_request(params = {})
       post :update,
@@ -353,6 +355,8 @@ describe Projects::MergeRequestsController do
         fork_project.add_reporter(user)
       end
 
+      it_behaves_like 'approvals'
+
       context 'user cannot push to source branch' do
         it 'returns 404' do
           expect_rebase_worker_for(viewer).never