1 files changed, 11 insertions, 3 deletions
diff --git a/spec/models/issue_spec.rb b/spec/models/issue_spec.rb
index d45a23a7ef8..eaa95de54b9 100644
--- a/spec/models/issue_spec.rb
+++ b/spec/models/issue_spec.rb
@@ -640,14 +640,22 @@ RSpec.describe Issue do
     end
 
     describe '#to_branch_name exists ending with -index' do
-      before do
+      it 'returns #to_branch_name ending with max index + 1' do
         allow(repository).to receive(:branch_exists?).and_return(true)
         allow(repository).to receive(:branch_exists?).with("#{subject.to_branch_name}-3").and_return(false)
-      end
 
-      it 'returns #to_branch_name ending with max index + 1' do
         expect(subject.suggested_branch_name).to eq("#{subject.to_branch_name}-3")
       end
+
+      context 'when branch name still exists after 5 attempts' do
+        it 'returns #to_branch_name ending with random characters' do
+          allow(repository).to receive(:branch_exists?).with(subject.to_branch_name).and_return(true)
+          allow(repository).to receive(:branch_exists?).with(/#{subject.to_branch_name}-\d/).and_return(true)
+          allow(repository).to receive(:branch_exists?).with(/#{subject.to_branch_name}-\h{8}/).and_return(false)
+
+          expect(subject.suggested_branch_name).to match(/#{subject.to_branch_name}-\h{8}/)
+        end
+      end
     end
   end