Fix expand all button not working

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/51737

1 files changed, 10 insertions, 0 deletions

diff --git a/spec/features/merge_request/user_views_diffs_spec.rb b/spec/features/merge_request/user_views_diffs_spec.rb
index 0434db04113..74342b16cb2 100644
--- a/spec/features/merge_request/user_views_diffs_spec.rb
+++ b/spec/features/merge_request/user_views_diffs_spec.rb
@@ -34,6 +34,16 @@ describe 'User views diffs', :js do
     expect(page).not_to have_selector('.mr-loading-status .loading', visible: true)
   end
 
+  it 'expands all diffs' do
+    first('#a5cc2925ca8258af241be7e5b0381edf30266302 .js-file-title').click
+
+    expect(page).to have_button('Expand all')
+
+    click_button 'Expand all'
+
+    expect(page).not_to have_button('Expand all')
+  end
+
   context 'when in the inline view' do
     include_examples 'unfold diffs'
   end