java PowerMock和Mockito未完成验证异常

Question

我很难让PowerMock和Mockito工作

我正在使用这些版本。它们应该是compatible

• powermock core v 1.7.4
• powermock api mockito v1.7.4
• powermock-module-junit4 v1.7.4
• mockito all v1.10.19

我也在使用TestNG，但我不认为这对测试结果有任何影响

我想模拟一个对象，在模拟对象上调用一个方法，并验证在模拟对象方法中是否调用过一次私有方法

我构建了一个例子，希望能解释我想要实现的目标

public class MyClass {

    public void execute(Object o) {
        valid(o);
    }

    private boolean valid(Object o) {
        return o != null;
    }
}

这是我的测试课

@RunWith(PowerMockRunner.class)
@PrepareForTest(MyClass.class)
public class TestClass {
    @After
    public void validate() {
        validateMockitoUsage();
    }

    @Test
    public void executeTest() throws Exception {
        //Initialize the Class and create the spy
        MyClass myClass = PowerMockito.spy(new MyClass());

        //Execute the method which I wish to test
        myClass.execute(null);

        //I want to verify that the private valid method was called once.
        PowerMockito.verifyPrivate(myClass, times(1)).invoke("valid", anyObject());
    }
}

我得到以下错误：

org.mockito.exceptions.misusing.UnfinishedVerificationException: 
Missing method call for verify(mock) here:
-> at TestClass.executeTest(MyClass.java:14)

Example of correct verification:
    verify(mock).doSomething()

Also, this error might show up because you verify either of: 

final/private/equals()/hashCode() methods.
Those methods *cannot* be stubbed/verified.
Mocking methods declared on non-public parent classes is not supported.


at TestClass.validate(MyClass.java:60)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:124)
at org.testng.internal.MethodInvocationHelper.invokeMethodConsideringTimeout(MethodInvocationHelper.java:59)
at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:458)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:222)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:646)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:719)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:989)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)
at org.testng.TestRunner.privateRun(TestRunner.java:648)
at org.testng.TestRunner.run(TestRunner.java:505)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:455)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:450)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:415)
at org.testng.SuiteRunner.run(SuiteRunner.java:364)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:84)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1208)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1137)
at org.testng.TestNG.runSuites(TestNG.java:1049)
at org.testng.TestNG.run(TestNG.java:1017)
at org.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:73)
at org.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:123)

我试过搜索，但找不到解决问题的方法。我认为这是一个常见错误，我使用PowerMock/Mockito是错误的

Answer 1

我无法在junit4上复制这个问题。事实证明，这是TestNG的一个问题

Answer 2

当您使用TestNG运行测试时，@RunWith注释被忽略，因为它是JUnit特有的

要实现这一点，您有两个选项：

1. 用JUnit运行测试

2. 或者配置TestNG，使其使用PowerMock对象工厂。配置细节解释得很好here

Answer 3

确保在使用powermock测试私有方法时添加了这两个注释：

@RunWith(PowerMockRunner.class)
@PrepareForTest(<Class_containing_pvt_method>.class)

@RunWith注释将powermock初始化为junit的运行程序

@PrepareForTest注释用于模拟final类，即带有final、private、static或native方法的类，以便powermock可以读取这些类的字节码（因为java不允许对私有方法进行反射）