Mockito异常-when()需要一个参数,该参数必须是模拟对象的方法调用

我有一个使用Mockito和Spring Test框架的非常简单的测试用例。当我做

when(pcUserService.read("1")).thenReturn(pcUser);

我得到这个例外。

org.mockito.exceptions.misusing.MissingMethodInvocationException: 

when() requires an argument which has to be 'a method call on a mock'.

For example:

when(mock.getArticles()).thenReturn(articles);

Also, this error might show up because:

1. you stub either of: final/private/equals()/hashCode() methods.

Those methods *cannot* be stubbed/verified.

2. inside when() you don't call method on mock but on some other object.

at com.project.cleaner.controller.test.PcUserControllerTest.shouldGetPcUser(PcUserControllerTest.java:93)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.lang.reflect.Method.invoke(Unknown Source)

at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)

我尝试使用不同的方法,但继续收到此错误消息。我在Mockito中使用Spring 3.1.0.RELEASE。请分享并指导我正确的方向。

回答:

您需要先创建pcUserService的MOCK,然后使用该模拟。

PcUserService mock = org.mockito.Mockito.mock(PcUserService.class);

when(mock.read("1")).thenReturn(pcUser);

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