1 files changed, 42 insertions, 0 deletions
diff --git a/spec/services/projects/move_users_star_projects_service_spec.rb b/spec/services/projects/move_users_star_projects_service_spec.rb
new file mode 100644
index 00000000000..e0545c5a21b
--- /dev/null
+++ b/spec/services/projects/move_users_star_projects_service_spec.rb
@@ -0,0 +1,42 @@
+require 'spec_helper'
+
+describe Projects::MoveUsersStarProjectsService do
+  let!(:user) { create(:user) }
+  let!(:project_with_stars) { create(:project, namespace: user.namespace) }
+  let!(:target_project) { create(:project, namespace: user.namespace) }
+
+  subject { described_class.new(target_project, user) }
+
+  describe '#execute' do
+    before do
+      create_list(:users_star_project, 2, project: project_with_stars)
+    end
+
+    it 'moves the user\'s stars from one project to another' do
+      expect(project_with_stars.users_star_projects.count).to eq 2
+      expect(project_with_stars.star_count).to eq 2
+      expect(target_project.users_star_projects.count).to eq 0
+      expect(target_project.star_count).to eq 0
+
+      subject.execute(project_with_stars)
+      project_with_stars.reload
+      target_project.reload
+
+      expect(project_with_stars.users_star_projects.count).to eq 0
+      expect(project_with_stars.star_count).to eq 0
+      expect(target_project.users_star_projects.count).to eq 2
+      expect(target_project.star_count).to eq 2
+    end
+
+    it 'rollbacks changes if transaction fails' do
+      allow(subject).to receive(:success).and_raise(StandardError)
+
+      expect { subject.execute(project_with_stars) }.to raise_error(StandardError)
+
+      expect(project_with_stars.users_star_projects.count).to eq 2
+      expect(project_with_stars.star_count).to eq 2
+      expect(target_project.users_star_projects.count).to eq 0
+      expect(target_project.star_count).to eq 0
+    end
+  end
+end