Merge branch 'fix_remove_fork_link' into 'master'

Remove fork link closes all merge requests opened on source project

Currently, if you:

- create a fork
- open a merge request on the source project
- remove the fork link

The created MR cannot be closed.

With this MR, all pending MR is closed when the fork link is removed.

See merge request !3189

1 files changed, 32 insertions, 0 deletions

diff --git a/spec/services/projects/unlink_fork_service_spec.rb b/spec/services/projects/unlink_fork_service_spec.rb
new file mode 100644
index 00000000000..23f5555d3e0
--- /dev/null
+++ b/spec/services/projects/unlink_fork_service_spec.rb
@@ -0,0 +1,32 @@
+require 'spec_helper'
+
+describe Projects::UnlinkForkService, services: true do
+  subject { Projects::UnlinkForkService.new(fork_project, user) }
+
+  let(:fork_link) { create(:forked_project_link) }
+  let(:fork_project) { fork_link.forked_to_project }
+  let(:user) { create(:user) }
+
+  context 'with opened merge request on the source project' do
+    let(:merge_request) { create(:merge_request, source_project: fork_project, target_project: fork_link.forked_from_project) }
+    let(:mr_close_service) { MergeRequests::CloseService.new(fork_project, user) }
+
+    before do
+      allow(MergeRequests::CloseService).to receive(:new).
+        with(fork_project, user).
+        and_return(mr_close_service)
+    end
+
+    it 'close all pending merge requests' do
+      expect(mr_close_service).to receive(:execute).with(merge_request)
+
+      subject.execute
+    end
+  end
+
+  it 'remove fork relation' do
+    expect(fork_project.forked_project_link).to receive(:destroy)
+
+    subject.execute
+  end
+end