# Copyright (C) 2012-2022 Zammad Foundation, https://zammad-foundation.org/ RSpec.shared_examples 'Mixin::HasBackends' do describe '.backends' do it 'is a Set' do expect(described_class.backends).to be_a(Set) end end it "auto requires #{described_class}::Backend" do expect(described_class).to be_const_defined(:Backend) end end