Mockito 模拟对象突然抛出 NPE

问题描述

我有一个模拟:

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

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

我有方法调用

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

我在 client.myMethod 调用上得到了 NPE如果我这样做了

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

println client // mock for MyGroovyBasedHttpClient with hashcode

所以 100% 客户端已初始化且不为 NULL我什至对模拟组件不为空的断言提出了质疑.我也对静态 MyGroovyBasedHttpClient createClient() 吸烟烟雾检查模拟客户端确实返回了我的自定义答案

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

如何调试此类问题?

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

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

推荐答案

mockito和groovy有问题，需要额外的依赖或者只能mock接口.

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

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

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

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

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

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