org.powermock.reflect.internal.WhiteboxImpl 对方法 java.lang.Object.clone() 的非法反射访问

Question

我想用这个 JUnit 测试来测试私有方法：

@RunWith(SpringRunner.class)
@SpringBootTest(classes = ReportingProcessor.class)
public class ReportingTest {

    @Autowired
    ReportingProcessor reportingProcessor;

    @Test
    public void reportingTest() throws Exception {

        ContextRefreshedEvent contextRefreshedEvent = PowerMockito.mock(ContextRefreshedEvent.class);
        Whitebox.invokeMethod(reportingProcessor, "collectEnvironmentData", contextRefreshedEvent);

    }
}

但我收到WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by org.powermock.reflect.internal.WhiteboxImpl (file:/C:/Users/Mainuser/.m2/repository/org/powermock/powermock-reflect/2.0.2/powermock-reflect-2.0.2.jar) to method java.lang.Object.clone() WARNING: Please consider reporting this to the maintainers of org.powermock.reflect.internal.WhiteboxImpl WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release

有没有办法解决这个问题？

Answer 1

已经有几个问题：

什么是非法反射访问

JDK9：发生了非法反射访问操作。 org.python.core.PySystemState

还有一些。

出于测试目的，您可以只从您身边执行反射，而无需使用依赖项。 为了更好地理解，我更改了 collectEnvironmentData 方法的返回类型：

 @EventListener
 private String collectEnvironmentData(ContextRefreshedEvent event) {
    return "Test";
 }

您可以通过这种方式访问它来实现假装的结果：

    @Test
    public void reportingTest() throws Exception {

        ContextRefreshedEvent contextRefreshedEvent = PowerMockito.mock(ContextRefreshedEvent.class);

        Method privateMethod = ReportingProcessor.class.
                getDeclaredMethod("collectEnvironmentData", ContextRefreshedEvent.class);

        privateMethod.setAccessible(true);

        String returnValue = (String)
                privateMethod.invoke(reportingProcessor, contextRefreshedEvent);
        Assert.assertEquals("Test", returnValue);
    }

使用 JDK13 在我的控制台上没有警告。