1 files changed, 46 insertions, 0 deletions
diff --git a/spec/services/merge_requests/remove_approval_service_spec.rb b/spec/services/merge_requests/remove_approval_service_spec.rb
new file mode 100644
index 00000000000..40da928e832
--- /dev/null
+++ b/spec/services/merge_requests/remove_approval_service_spec.rb
@@ -0,0 +1,46 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe MergeRequests::RemoveApprovalService do
+  describe '#execute' do
+    let(:user) { create(:user) }
+    let(:project) { create(:project) }
+    let(:merge_request) { create(:merge_request, source_project: project) }
+    let!(:existing_approval) { create(:approval, merge_request: merge_request) }
+
+    subject(:service) { described_class.new(project, user) }
+
+    def execute!
+      service.execute(merge_request)
+    end
+
+    before do
+      project.add_developer(user)
+    end
+
+    context 'with a user who has approved' do
+      let!(:approval) { create(:approval, user: user, merge_request: merge_request) }
+
+      it 'removes the approval' do
+        expect { execute! }.to change { merge_request.approvals.size }.from(2).to(1)
+      end
+
+      it 'creates an unapproval note and triggers web hook' do
+        expect(service).to receive(:execute_hooks).with(merge_request, 'unapproved')
+        expect(SystemNoteService).to receive(:unapprove_mr)
+
+        execute!
+      end
+    end
+
+    context 'with a user who has not approved' do
+      it 'does not create an unapproval note and triggers web hook' do
+        expect(service).not_to receive(:execute_hooks)
+        expect(SystemNoteService).not_to receive(:unapprove_mr)
+
+        execute!
+      end
+    end
+  end
+end