sms_spec.rb

describe SMS do
  let(:mock_clockwork_api){ double{"ClockworkApi"} }
  subject { SMS.new(:mock_clockwork_api) }
  context ".build" do
    it "should call messages.build" do
      allow(mock_clockwork_api).to receive_message_chain("messages.build") { "method response" }
      expect(mock_clockwork_api.messages.build).to eq("method response")
    end
  end
end