为方法调用的每个实例返回相同的值
您好我没有使用PowerMockito而是正常的并试图模仿这样的东西：
Hi I'm not using PowerMockito but normal one and trying to mock something like this:
when(any(File.class).canWrite()).thenReturn(Boolean.FALSE)
但我得到的NullPointerException 。基本上没有模拟特定实例我想模拟文件对象的任何和所有实例返回 FALSE for canWrite（）。
But I get a NullPointerException. Basically without mocking a specific instance I want to mock any and all instances of a file object to return FALSE for canWrite().
任何人都可以提供帮助吗？我可以模拟对象，但我正在测试的代码是在静态方法中。
Can anyone help? I can mock the object but the code I'm testing is inside a static method.
这是不可能的。对于常规的Mockito，你需要在when（）调用中使用一些模拟对象，而不是任何匹配器。
This is not possible. With regular Mockito you need some mock object in the when() call, not an any matcher.
对于你的例子，当你说任何（File.class）
For your example, when you say any(File.class)
when(any(File.class).canWrite()).thenReturn(Boolean.FALSE)
您需要将一个文件对象实例化为模拟
You need to have a file object already instantiated as a Mock
File fileMock = mock(File.class);
when(fileMock.canWrite()).thenReturn(Boolean.FALSE)