最终方法模拟

本文介绍了最终方法模拟的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我需要使用 mockito 用 final 方法来模拟一些类.我写过这样的东西

I need mock some class with final method using mockito. I have wrote something like this

@Test public void test() { B b = mock(B.class); doReturn("bar called").when(b).bar(); assertEquals("must be "overrided"", "bar called", b.bar()); //bla-bla } class B { public final String bar() { return "fail"; } }

但它失败了.我尝试了一些hack"，它奏效了.

But it fails. I tried some "hack" and it works.

@Test public void hackTest() { class NewB extends B { public String barForTest() { return bar(); } } NewB b = mock(NewB.class); doReturn("bar called").when(b).barForTest(); assertEquals("must be "overrided"", "bar called", b.barForTest()); }

它有效，但闻起来".

那么，正确的方法在哪里?

So, Where is the right way?

谢谢.

推荐答案

Mockito 不支持模拟 final 方法.

There is no support for mocking final methods in Mockito.

正如 Jon Skeet 评论的那样，您应该寻找一种方法来避免对最终方法的依赖.也就是说，有一些方法可以通过字节码操作(例如使用 PowerMock)

As Jon Skeet commented you should be looking for a way to avoid the dependency on the final method. That said, there are some ways out through bytecode manipulation (e.g. with PowerMock)

Mockito 和 PowerMock 之间的比较会详细解释.