java - TestNG + Mockito，如何测试抛出的异常和模拟调用

Question

在我的 TestNG 单元测试中，我有一个场景，我想测试抛出异常，但我也想测试模拟子组件上是否未调用某些方法。我想出了这个，但是它很难看，很长而且可读性不好:

@Test
public void testExceptionAndNoInteractionWithMethod() throws Exception {

    when(subComponentMock.failingMethod()).thenThrow(RuntimeException.class);

    try {
        tested.someMethod(); //may call subComponentMock.methodThatShouldNotBeCalledWhenExceptionOccurs
    } catch (RuntimeException e) {
        verify(subComponentMock, never()).methodThatShouldNotBeCalledWhenExceptionOccurs(any());
        return;
    }

    fail("Expected exception was not thrown");
}

是否有更好的解决方案来测试 Exception 和 verify() 方法？

Answer 1

我们决定使用断言框架。

when(subComponentMock.failingMethod()).thenThrow(RuntimeException.class);

Assertions.assertThatThrownBy(() -> tested.someMethod()).isOfAnyClassIn(RuntimeException.class);

verify(subComponentMock, never()).methodThatShouldNotBeCalledWhenExceptionOccurs(any());