Replace references to MergeRequestDiff#commits with st_commitsuse-st-commits-where-possible

when we care only about the number of commits

We do not have to instantiate all objects in this case.

1 files changed, 17 insertions, 17 deletions

diff --git a/spec/models/merge_request_diff_spec.rb b/spec/models/merge_request_diff_spec.rb
index e5007424041..eb876d105da 100644
--- a/spec/models/merge_request_diff_spec.rb
+++ b/spec/models/merge_request_diff_spec.rb
@@ -77,24 +77,13 @@ describe MergeRequestDiff, models: true do
   end
 
   describe '#commits_sha' do
-    shared_examples 'returning all commits SHA' do
-      it 'returns all commits SHA' do
-        commits_sha = subject.commits_sha
+    it 'returns all commits SHA using serialized commits' do
+      subject.st_commits = [
+        { id: 'sha1' },
+        { id: 'sha2' }
+      ]
 
-        expect(commits_sha).to eq(subject.commits.map(&:sha))
-      end
-    end
-
-    context 'when commits were loaded' do
-      before do
-        subject.commits
-      end
-
-      it_behaves_like 'returning all commits SHA'
-    end
-
-    context 'when commits were not loaded' do
-      it_behaves_like 'returning all commits SHA'
+      expect(subject.commits_sha).to eq(['sha1', 'sha2'])
     end
   end
 
@@ -113,4 +102,15 @@ describe MergeRequestDiff, models: true do
       expect(diffs.size).to eq(3)
     end
   end
+
+  describe '#commits_count' do
+    it 'returns number of commits using serialized commits' do
+      subject.st_commits = [
+        { id: 'sha1' },
+        { id: 'sha2' }
+      ]
+
+      expect(subject.commits_count).to eq 2
+    end
+  end
 end