Add a controller test for the new 'diff_view' cookie

1 files changed, 13 insertions, 1 deletions

diff --git a/spec/controllers/projects/merge_requests_controller_spec.rb b/spec/controllers/projects/merge_requests_controller_spec.rb
index 6aaec224f6e..183cfef3611 100644
--- a/spec/controllers/projects/merge_requests_controller_spec.rb
+++ b/spec/controllers/projects/merge_requests_controller_spec.rb
@@ -188,7 +188,7 @@ describe Projects::MergeRequestsController do
         expect(response).to render_template('diffs')
       end
     end
-    
+
     context 'as json' do
       it 'renders the diffs template to a string' do
         go format: 'json'
@@ -199,6 +199,18 @@ describe Projects::MergeRequestsController do
     end
   end
 
+  describe 'GET diffs with view' do
+    it 'saves the preferred diff view in a cookie' do
+      get :diffs,
+          namespace_id: project.namespace.to_param,
+          project_id: project.to_param,
+          id: merge_request.iid,
+          view: 'parallel'
+
+      expect(response.cookies['diff_view']).to eq('parallel')
+    end
+  end
+
   describe 'GET commits' do
     def go(format: 'html')
       get :commits,