java测试线程。在PowerMock不工作的情况下睡觉

Question

为了简化事情，我尝试验证这个线程。在下面的方法中使用PowerMock调用sleep（）

public class Sleeper {
  public void sleep() throws Exception {
    Thread.sleep(10);
  }
}

测试班

public class SleeperTest {

  // Mock setup done here to mock Sleeper instance

  @Test
  public void testSleep throws Exception {
    PowerMockito.mockStatic(Thread.class);
    sleeper.sleep();
    PowerMockito.verifyStatic();
    Thread.sleep(Mockito.anyLong());
  }

}

我觉得这是我应该做的一切，让它工作，但我得到以下错误，当我试图运行它

Wanted but not invoked java.lang.Thread.sleep(0);
Actually, there were zero interactions with this mock.

版本

 testCompile group: 'org.powermock', name: 'powermock-module-junit4', version: '1.6.2'
 testCompile group: 'org.powermock', name: 'powermock-api-mockito', version: '1.6.6'

有趣的是，如果线程。在测试通过的测试方法中调用sleep

// This works
@Test
public void testSleep() throws Exception
{
  PowerMockito.mockStatic(Thread.class);
  Thread.sleep(Mockito.anyLong());
  PowerMockito.verifyStatic();
  Thread.sleep(Mockito.anyLong());
}

你知道我可能做错了什么吗？提前谢谢

Answer 1

您是否为使用PowerMock运行静态模拟的测试类添加了注释？您应该这样注释它：

@PrepareForTest(Sleeper.class)
@RunWith(PowerMockRunner.class)
public class SleeperTest {

  // Mock setup done here to mock Sleeper instance

  @Test
  public void testSleep throws Exception {
    PowerMockito.mockStatic(Thread.class);
    sleeper.sleep();
    PowerMockito.verifyStatic();
    Thread.sleep(Mockito.anyLong());
  }

}

请尝试使用此设置。。。我曾尝试复制您的代码，但在PowerMock的兼容性和版本控制方面遇到了很多问题，于是放弃了。事实上，您应该避免编写静态方法，这些方法在测试时需要模拟。您应该编写它，使它不依赖于程序的状态