使用Dagger2 (Robolectric)模拟jetpack ViewModel进行单元测试

dependencies {
    // Dagger2
    implementation 'com.google.dagger:dagger:2.x'
    annotationProcessor 'com.google.dagger:dagger-compiler:2.x'

    // Robolectric
    testImplementation 'org.robolectric:robolectric:4.x'
}

@RunWith(RobolectricTestRunner.class)
@Config(sdk = Build.VERSION_CODES.P)
public class MyViewModelTest {
    // 测试代码
}

@Module
public class TestModule {
    @Provides
    public MyDependency provideMyDependency() {
        return new MyDependency();
    }
}

@Component(modules = {TestModule.class})
public interface TestComponent {
    void inject(MyViewModelTest myViewModelTest);
}

@RunWith(RobolectricTestRunner.class)
@Config(sdk = Build.VERSION_CODES.P)
public class MyViewModelTest {
    @Inject
    MyDependency myDependency;

    @Before
    public void setup() {
        TestComponent testComponent = DaggerTestComponent.create();
        testComponent.inject(this);
    }

    @Test
    public void testViewModel() {
        // 使用模拟的依赖项进行测试
        // ...
    }
}