From 859a6fb938bb9ee2a317c46dfa4fcc1af49608f0 Mon Sep 17 00:00:00 2001
From: GitLab Bot <gitlab-bot@gitlab.com>
Date: Thu, 18 Feb 2021 10:34:06 +0000
Subject: Add latest changes from gitlab-org/gitlab@13-9-stable-ee

---
 .../system_notes/merge_requests_service_spec.rb    | 28 ++++++++++++++++++----
 1 file changed, 24 insertions(+), 4 deletions(-)

(limited to 'spec/services/system_notes/merge_requests_service_spec.rb')

diff --git a/spec/services/system_notes/merge_requests_service_spec.rb b/spec/services/system_notes/merge_requests_service_spec.rb
index 50d16231e8f..2131f3d3bdf 100644
--- a/spec/services/system_notes/merge_requests_service_spec.rb
+++ b/spec/services/system_notes/merge_requests_service_spec.rb
@@ -167,18 +167,38 @@ RSpec.describe ::SystemNotes::MergeRequestsService do
   end
 
   describe '.change_branch' do
-    subject { service.change_branch('target', old_branch, new_branch) }
-
     let(:old_branch) { 'old_branch'}
     let(:new_branch) { 'new_branch'}
 
     it_behaves_like 'a system note' do
       let(:action) { 'branch' }
+
+      subject { service.change_branch('target', 'update', old_branch, new_branch) }
     end
 
     context 'when target branch name changed' do
-      it 'sets the note text' do
-        expect(subject.note).to eq "changed target branch from `#{old_branch}` to `#{new_branch}`"
+      context 'on update' do
+        subject { service.change_branch('target', 'update', old_branch, new_branch) }
+
+        it 'sets the note text' do
+          expect(subject.note).to eq "changed target branch from `#{old_branch}` to `#{new_branch}`"
+        end
+      end
+
+      context 'on delete' do
+        subject { service.change_branch('target', 'delete', old_branch, new_branch) }
+
+        it 'sets the note text' do
+          expect(subject.note).to eq "changed automatically target branch to `#{new_branch}` because `#{old_branch}` was deleted"
+        end
+      end
+
+      context 'for invalid event_type' do
+        subject { service.change_branch('target', 'invalid', old_branch, new_branch) }
+
+        it 'raises exception' do
+          expect { subject }.to raise_error /invalid value for event_type/
+        end
       end
     end
   end
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