java – 使用Mockito的ArgumentCaptor类来匹配子类

问题是线Mockito.verify(模拟).receive(captor.capture()); (编辑：将此添加到下面的代码中)失败并出现TooManyActualInvocations异常(2而不是1).我想了解为什么会发生这种情况 – Mockito的执行效果不佳还是由于泛型的类型擦除造成的限制？

public class FooReceiver {
  public void receive(Foo foo) {

  }
}

public interface Foo {
}

public class A implements Foo {
}

public class B implements Foo {
}

public class TestedClass {
  private FooReceiver receiver;
  public TestedClass(FooReceiver receiver) {
    this.receiver = receiver;
  }

  public void doStuff() {
    receiver.receive(new A());
    receiver.receive(new B());
  }
}

public class MyTest {

  @Test
  public void testingStuff() {
    // Setup
    FooReceiver mocked = Mockito.mock(FooReceiver.class);
    TestedClass t = new TestedClass(mocked);

    // Method under test
    t.doStuff();

    // Verify
    ArgumentCaptor<B> captor = ArgumentCaptor.forClass(B.class);
    Mockito.verify(mocked).receive(captor.capture()); // Fails here

    Assert.assertTrue("What happened?",captor.getValue() instanceof B);
  }
}

编辑：
对于任何有兴趣的人,我最终做到了这一点：

// Verify
final B[] b = new B[1];
ArgumentMatcher<B> filter = new ArgumentMatcher<B>() {
  @Override
  public boolean matches(Object argument) {
    if(argument instanceof B) {
      b[0] = (B) argument;
      return true;
    }
    return false;
  }
}
Mockito.verify(mocked).receive(Mockito.argThat(filter));