Mockito嘲笑对象突然抛出NPE [英] Mockito mocked object suddenly throws NPE

问题描述

 静态MyGroovyBasedHttpClient createClient（）{
 MyGroovyBasedHttpClient client = mock（MyGroovyBasedHttpClient.class ）; 
答案< SimpleResponse> methodAnswer = createGenericAnswer（）; 
 
 when（client.myMethod（anyString（），anyInt（），anyString（）））。thenAnswer（methodAnswer）; 
返回客户端; 
} 
  

我有方法调用

  def response = client.myMethod（stringParam1，intParam2，stringParam3）
  

我在 client.myMethod 调用中获得NPE
如果我做了

  println客户端//使用散列码模拟MyGroovyBasedHttpClient 
  

所以100％客户端被初始化，而不是NULL
我甚至可以冒烟的断言，嘲笑的组件不是零。
另外我在静态方法上吸烟 MyGroovyBasedHttpClient createClient（）
烟雾检查模拟客户端返回我的自定义答案

如何调试此类问题？

UPD：
看起来像这是我的问题： https://code.google.com/p/mockito/issues/detail?id=303

解决方案

mockito和groovy存在一个问题，您需要额外的依赖性，或者您只能模拟接口。

欲了解更多信息，请访问：
https://github.com/cyrusinnovation/mockito-groovy-support

关于groovy类的mockito问题的第303期：
https://code.google.com/p/mockito/issues/detail?id = 303

I have a mock:

 static MyGroovyBasedHttpClient createClient(){
    MyGroovyBasedHttpClient client = mock(MyGroovyBasedHttpClient.class);
    Answer<SimpleResponse> methodAnswer = createGenericAnswer();

    when(client.myMethod(anyString(), anyInt(),anyString())).thenAnswer(methodAnswer);
    return client;
}

And I have method invocation

def response = client.myMethod(stringParam1, intParam2, stringParam3)

And I get NPE on client.myMethod invocation If i do

println client // mock for MyGroovyBasedHttpClient with hashcode

so 100% client is initialized and not NULL I even hace smoke assertions that mocked components are not null. Also I have smoke on static MyGroovyBasedHttpClient createClient() Smoke checks that mocked client does return my custom Answer

How can I debug such problem?

UPD: Look like this is my problem: https://code.google.com/p/mockito/issues/detail?id=303

解决方案

There is a problem with mockito and groovy, you need additional dependency or you can mock only interfaces.

For more info visit : https://github.com/cyrusinnovation/mockito-groovy-support

Issue 303 about mockito problem with groovy classes : https://code.google.com/p/mockito/issues/detail?id=303

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