Client changes for Tag,BranchNamesContainingCommit

As part of gitlab-org/gitaly#884, this commit contains the client
implementation for both TagNamesContaintingCommit and
BranchNamesContainingCommit. The interface in the Repository model stays
the same, but the implementation on the serverside, e.g. Gitaly, uses
`for-each-ref`, as opposed to `branch` or `tag` which both aren't
plumbing command. The result stays the same.

On the serverside, we have the opportunity to limit the number of names
to return. However, this is not supported on the front end yet. My
proposal to use this ability: gitlab-org/gitlab-ce#42581. For now, this
ability is not used as that would change more behaviours on a feature
flag which might lead to unexpected changes on page refresh for example.

1 files changed, 34 insertions, 11 deletions

diff --git a/spec/models/repository_spec.rb b/spec/models/repository_spec.rb
index 1102b1c9006..07d43acd338 100644
--- a/spec/models/repository_spec.rb
+++ b/spec/models/repository_spec.rb
@@ -36,26 +36,49 @@ describe Repository do
   end
 
   describe '#branch_names_contains' do
-    subject { repository.branch_names_contains(sample_commit.id) }
+    shared_examples '#branch_names_contains' do
+      set(:project) { create(:project, :repository) }
+      let(:repository) { project.repository }
 
-    it { is_expected.to include('master') }
-    it { is_expected.not_to include('feature') }
-    it { is_expected.not_to include('fix') }
+      subject { repository.branch_names_contains(sample_commit.id) }
 
-    describe 'when storage is broken', :broken_storage  do
-      it 'should raise a storage error' do
-        expect_to_raise_storage_error do
-          broken_repository.branch_names_contains(sample_commit.id)
+      it { is_expected.to include('master') }
+      it { is_expected.not_to include('feature') }
+      it { is_expected.not_to include('fix') }
+
+      describe 'when storage is broken', :broken_storage  do
+        it 'should raise a storage error' do
+          expect_to_raise_storage_error do
+            broken_repository.branch_names_contains(sample_commit.id)
+          end
         end
       end
     end
+
+    context 'when gitaly is enabled' do
+      it_behaves_like '#branch_names_contains'
+    end
+
+    context 'when gitaly is disabled', :skip_gitaly_mock do
+      it_behaves_like '#branch_names_contains'
+    end
   end
 
   describe '#tag_names_contains' do
-    subject { repository.tag_names_contains(sample_commit.id) }
+    shared_examples '#tag_names_contains' do
+      subject { repository.tag_names_contains(sample_commit.id) }
+
+      it { is_expected.to include('v1.1.0') }
+      it { is_expected.not_to include('v1.0.0') }
+    end
+
+    context 'when gitaly is enabled' do
+      it_behaves_like '#tag_names_contains'
+    end
 
-    it { is_expected.to include('v1.1.0') }
-    it { is_expected.not_to include('v1.0.0') }
+    context 'when gitaly is enabled', :skip_gitaly_mock do
+      it_behaves_like '#tag_names_contains'
+    end
   end
 
   describe 'tags_sorted_by' do