带有@Mock和@InjectMock的Mockito，但未被调用：实际上，与该模拟的交互为零

Question

我有一个要测试的课程：

   public class DivisionCalculator {
    private final Validator validator;
    private final MathProvider mathProvider;
    private final ViewProvider viewProvider;

    public DivisionCalculator(Validator validator, MathProvider mathProvider, ViewProvider viewProvider) {
        this.validator = validator;
        this.mathProvider = mathProvider;
        this.viewProvider = viewProvider;
    }

    public String calculate(int dividend, int divisor) {
        validator.validate(dividend, divisor);

        List<DivisionStep> items = mathProvider.calculate(dividend, divisor);

        DivisionResult result = DivisionResult.builder()
                .dividend(dividend)
                .divisor(divisor)
                .finalResult(mathProvider.finalResult(items))
                .items(items)
                .build();

        return viewProvider.provideView(result);
    }
}

我有下一个可以正常运行的测试类，并使用Mockito.mock（dependency.class）通过测试

    public class DivisionCalculatorTest {

    private ViewProvider viewProvider = Mockito.mock(ViewProvider.class);
    private MathProvider mathProvider = Mockito.mock(MathProvider.class);
    private Validator validator = Mockito.mock(Validator.class);

    private DivisionCalculator divisionCalculator = new DivisionCalculator(validator, mathProvider, viewProvider);

    DivisionResult makeDivision(int dividend, int divisor) {
        List<DivisionStep> items = mathProvider.calculate(dividend, divisor);
        return DivisionResult.builder()
                .dividend(dividend)
                .divisor(divisor)
                .finalResult(mathProvider.finalResult(items))
                .items(items)
                .build();
    }

    @Test
    void divisionCalculatorShouldSuccessfullyCallHisComponents() {

        divisionCalculator.calculate(4, 2);

        Mockito.verify(validator).validate(Mockito.anyInt(), Mockito.anyInt());
        Mockito.verify(mathProvider).calculate(Mockito.anyInt(),Mockito.anyInt());
        Mockito.verify(viewProvider).provideView(refEq(makeDivision(4, 2)));

    }
}
但是为了遵循使用模拟的最佳实践，我想用@ Mock

和@@ InjectMock注释替换我的Mockito.mock（dependency.class））

public class DivisionTest {
    @Mock
    private Validator validator = new Validator();
    @Mock
    private ViewProvider viewProvider = new ViewProvider();
    @Mock
    private MathProvider mathProvider = new MathProvider();

    @BeforeEach
    void setup() {
        MockitoAnnotations.initMocks(this);
    }
    @InjectMocks
    private DivisionCalculator divisionCalculator = new DivisionCalculator(validator, mathProvider, viewProvider);

    DivisionResult makeDivision(int dividend, int divisor) {
        List<DivisionStep> items = mathProvider.calculate(dividend, divisor);
        return DivisionResult.builder()
                .dividend(dividend)
                .divisor(divisor)
                .finalResult(mathProvider.finalResult(items))
                .items(items)
                .build();
    }

    @Test
    void divisionCalculatorShouldSuccessfullyCallHisComponents() {

        divisionCalculator.calculate(4, 2);

        Mockito.verify(validator).validate(4, 2);
        Mockito.verify(mathProvider).calculate(4, 2);
        Mockito.verify(viewProvider).provideView(refEq(makeDivision(4, 2)));
    }
}
经过以下步骤，我得到了错误：想要但未被调用：实际上，该模拟程序的交互为零。

我不明白我在这里缺少什么。

我有一个要测试的类：public class DivisionCalculator {private final Validator Validator;私有的最终MathProvider mathProvider；私有最终ViewProvider ...

Answer 1

如果您具有@Mock和@InjectMocks之类的注释，则需要在Junit 5中运行具有特殊扩展名的Junit测试：