如何检查是否在迷你测试中调用了模拟的 class 方法？

Question

我在 Rails 上使用 Minitest 和 Ruby 5. 如何断言调用了 void class 方法？我的 class

里有这个

module WebsocketClient
  class Proxy
    ...
    def self.authenticate(ws)
      auth_str = 'auth_str'
      ws.send auth_str
    end

然后在我的 minitest 文件中我有

  # Call the connect method
  WebsocketClient::Proxy.stub(:authenticate) do
    ws_client = WebsocketClient::Proxy.new(stratum_worker)
    ws_client.connect

    msg = WebSocket::Frame::Incoming::Client.new
    msg.data = error_str
    ws_client.websocket.emit :message, msg

    # Somehow verify that authenticate was called.
  end

但我不确定如何检查我的 "authenticate" 方法是否确实被调用了。

Answer 1

添加 Spy gem

https://github.com/ryanong/spy

然后你会像下面那样做

 # Call the connect method
  WebsocketClient::Proxy.stub(:authenticate) do
    ws_client = WebsocketClient::Proxy.new(stratum_worker)
    authenticate_spy = Spy.on(ws_client, :authenticate).and_call_through
    ws_client.connect

    msg = WebSocket::Frame::Incoming::Client.new
    msg.data = error_str
    ws_client.websocket.emit :message, msg

    # Somehow verify that authenticate was called.
    assert authenticate_spy.has_been_called?
  end

如果您不想执行实际方法而只是监视它，那么您将使用

authenticate_spy = Spy.on(ws_client, :authenticate)

查看下面的更多示例以熟悉 Spy 及其概念

https://github.com/ryanong/spy