@Mock 和 @InjectMocks 之间的区别

问题描述

Mockito框架中的@Mock和@InjectMocks有什么区别?

What is the difference between @Mock and @InjectMocks in Mockito framework?

推荐答案

@Mock 创建一个模拟.@InjectMocks 创建该类的一个实例，并将使用 @Mock(或 @Spy)注释创建的模拟注入此实例.

@Mock creates a mock. @InjectMocks creates an instance of the class and injects the mocks that are created with the @Mock (or @Spy) annotations into this instance.

请注意，您必须使用 @RunWith(MockitoJUnitRunner.class) 或 Mockito.initMocks(this) 来初始化这些模拟并注入它们 (JUnit 4).

Note you must use @RunWith(MockitoJUnitRunner.class) or Mockito.initMocks(this) to initialize these mocks and inject them (JUnit 4).

对于 JUnit 5，您必须使用 @ExtendWith(MockitoExtension.class).

With JUnit 5, you must use @ExtendWith(MockitoExtension.class).

@RunWith(MockitoJUnitRunner.class) // JUnit 4
// @ExtendWith(MockitoExtension.class) for JUnit 5
public class SomeManagerTest {

    @InjectMocks
    private SomeManager someManager;

    @Mock
    private SomeDependency someDependency; // this will be injected into someManager
 
     // tests...

}

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