junit @Mock

@Mock是JUnit中的注解，它用于创建一个模拟对象（mock object）。@Mock注解的作用是生成一个接口或者类的mock对象，可以用于模拟测试中的依赖对象。但是要注意，使用@Mock注解生效的两种方式。一种是使用@RunWith(MockitoJUnitRunner.class)注解在测试类上，另一种是在@Before方法中使用MockitoAnnotations.openMocks(this)初始化对象。如果没有正确初始化@Mock注解的对象，可能会导致空指针异常的发生。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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