Do not raise error when checking pipeline reference

Return from the `Ci::Pipeline#ref_exists?` in case when there is no
repository present.

This also fixes pipeline page feature specs by changing pipeline
reference instead of stubbing `ref_exist?` method.

1 files changed, 6 insertions, 3 deletions

diff --git a/spec/features/projects/pipelines/pipeline_spec.rb b/spec/features/projects/pipelines/pipeline_spec.rb
index 5734c7e355e..cd6c37bf54d 100644
--- a/spec/features/projects/pipelines/pipeline_spec.rb
+++ b/spec/features/projects/pipelines/pipeline_spec.rb
@@ -241,9 +241,12 @@ describe 'Pipeline', :js do
       end
     end
 
-    context 'with deleted branch' do
-      before do
-        allow(pipeline).to receive(:ref_exists?).and_return(false)
+    context 'when pipeline ref does not exist in repository anymore' do
+      let(:pipeline) do
+        create(:ci_empty_pipeline, project: project,
+                                   ref: 'non-existent',
+                                   sha: project.commit.id,
+                                   user: user)
       end
 
       it 'does not render link to the pipeline ref' do