ruby - 如何使用 rspec 模拟 AWS SDK (v2)？

Question

我有一个使用 the aws-sdk-rails gem 从 SQS 队列读取/处理消息的类(这是 aws-sdk-ruby v2 上的包装器)。如何模拟 AWS 调用，以便在不影响外部服务的情况下测试我的代码？

communicator.rb:

class Communicator
  def consume_messages
    sqs_client = Aws::SQS::Client.new
    # consume messages until the queue is empty
    loop do
      r = sqs_client.receive_message({
                                              queue_url: "https://sqs.region.amazonaws.com/xxxxxxxxxxxx/foo",
                                              visibility_timeout: 1,
                                              max_number_of_messages: 1
                                     })
      break if (response.message.length == 0)
      # process r.messages.first.body
      r = sqs_client.delete_message({
                                      queue_url: "https://sqs.region.amazonaws.com/xxxxxxxxxxxx/foo",
                                      receipt_handle: r.messages.first.receipt_handle
                                    })
    end
  end
end

Answer 1

AWS SDK 已经提供 stub 。 q.v. http://docs.aws.amazon.com/sdkforruby/api/Aws/ClientStubs.html了解更多信息(链接到官方文档。)