removed the #ensure_ref_fetched from all controllers

also, I refactored the MergeRequest#fetch_ref method to express
the side-effect that this method has.

  MergeRequest#fetch_ref -> MergeRequest#fetch_ref!
  Repository#fetch_source_branch -> Repository#fetch_source_branch!

1 files changed, 5 insertions, 32 deletions

diff --git a/spec/models/merge_request_spec.rb b/spec/models/merge_request_spec.rb
index 476a2697605..f719ee26767 100644
--- a/spec/models/merge_request_spec.rb
+++ b/spec/models/merge_request_spec.rb
@@ -1755,39 +1755,12 @@ describe MergeRequest do
     end
   end
 
-  describe '#fetch_ref' do
-    it 'sets "ref_fetched" flag to true' do
-      subject.update!(ref_fetched: nil)
+  describe '#fetch_ref!' do
+    it 'fetch the ref correctly' do
+      expect { subject.target_project.repository.delete_refs(subject.ref_path) }.not_to raise_error
 
-      subject.fetch_ref
-
-      expect(subject.reload.ref_fetched).to be_truthy
-    end
-  end
-
-  describe '#ref_fetched?' do
-    it 'does not perform git operation when value is cached' do
-      subject.ref_fetched = true
-
-      expect_any_instance_of(Repository).not_to receive(:ref_exists?)
-      expect(subject.ref_fetched?).to be_truthy
-    end
-
-    it 'caches the value when ref exists but value is not cached' do
-      subject.update!(ref_fetched: nil)
-      allow_any_instance_of(Repository).to receive(:ref_exists?)
-        .and_return(true)
-
-      expect(subject.ref_fetched?).to be_truthy
-      expect(subject.reload.ref_fetched).to be_truthy
-    end
-
-    it 'returns false when ref does not exist' do
-      subject.update!(ref_fetched: nil)
-      allow_any_instance_of(Repository).to receive(:ref_exists?)
-        .and_return(false)
-
-      expect(subject.ref_fetched?).to be_falsey
+      subject.fetch_ref!
+      expect(subject.target_project.repository.ref_exists?(subject.ref_path)).to be_truthy
     end
   end