Java 当调用最终类的静态方法时，如何调用PowerMockito.doNothing？

我在一个实用程序类中有这行代码

System.setProperty("someProperty", <StringValue>);

我尝试使用以下选项不执行任何操作：

1. PowerMockito.mockStatic(System.class);
   PowerMockito.doNothing().when(System.class, "setProperty", "someProperty", "stringValue");

2. PowerMockito.mockStatic(System.class);
   PowerMockito.doNothing().when(System.class, "setProperty", Mockito.any(String.class), Mockito.any(String.class));

3. PowerMockito.mockStatic(System.class);
   PowerMockito.doAnswer(new org.mockito.stubbing.Answer<Object>() {
            @Override
            public Object answer(InvocationOnMock invocation) throws Throwable {
                return null; //does nothing
            }
        }).when(System.class, "setProperty", "someProperty", "stringValue");

关于如何在调用System.setProperty时不执行任何操作的任何建议。 请注意，System是最后一个类，我们调用的是一个带有2个参数的静态方法。

---

谢谢

只有void方法不能执行任何操作（）

setProperty（）返回字符串

使用

不确定，但这可能会有帮助

1. PowerMockito.mockStatic(System.class);
   PowerMockito.doNothing().when(System.class, "setProperty", "someProperty", "stringValue");

2. PowerMockito.mockStatic(System.class);
   PowerMockito.doNothing().when(System.class, "setProperty", Mockito.any(String.class), Mockito.any(String.class));

3. PowerMockito.mockStatic(System.class);
   PowerMockito.doAnswer(new org.mockito.stubbing.Answer<Object>() {
            @Override
            public Object answer(InvocationOnMock invocation) throws Throwable {
                return null; //does nothing
            }
        }).when(System.class, "setProperty", "someProperty", "stringValue");

org.mockito.exceptions.misusing.UnfinishedStubbingException: 
Unfinished stubbing detected here:

PowerMockito.mockStatic(System.class);
PowerMockito.when(System.setProperty(anyString(), anyString())).thenReturn("test");