最后的方法嘲笑 [英] Final method mocking

问题描述

我需要使用mockito使用final方法模拟一些类。我写过类似的东西

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并且它有效。

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，哪里是正确的方式？

So, Where is the right way?

谢谢。

推荐答案

Mockito中不支持模拟最终方法。

There is no support for mocking final methods in Mockito.

正如Jon Skeet评论的那样，你应该寻找一种方法来避免依赖于最后的方法。也就是说，通过字节码操作有一些方法（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)

A Mockito和PowerMock之间的比较将详细解释事情。

A comparison between Mockito and PowerMock will explain things in detail.

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