java 使用 Mockito，如何在 void 方法上拦截回调对象？
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Using Mockito, how do I intercept a callback object on a void method?
提问by brasskazoo
I'm using mockito to test a legacy JAAS/LDAP login module.
我正在使用 mockito 来测试旧的 JAAS/LDAP 登录模块。
The javax.security.auth.callback.CallbackHandlerinterface defines the function:
该javax.security.auth.callback.CallbackHandler接口定义了功能：
void handle(javax.security.auth.callback.Callback[] callbacks)
I'm expecting callbacksto contain a NameCallback, which is the object that needs to be manipulated to pass the test.
我期望callbacks包含一个NameCallback，它是需要被操纵以通过测试的对象。
Is there a way to mock this effectively, or would I be better off with a stubbed implementation of CallbackHandler?
有没有办法有效地模拟这个，或者我会更好地实现CallbackHandler?
回答by brasskazoo
For functions returning void, use doAnswer()
对于返回的函数void，使用doAnswer()
doAnswer(...).when(mockedObject).handle(any(Callback[].class));
And an Answerthat performs the interception must go in as the parameter to doAnswer, e.g. as an anonymous class:
Answer执行拦截的an必须作为 to 的参数进入doAnswer，例如作为匿名类：
new Answer() {
public Object answer(InvocationOnMock invocation) {
Object[] args = invocation.getArguments();
Mock mock = invocation.getMock();
return null;
}}
In this case argswill be the array Callback[]!
在这种情况下args将是数组Callback[]！
