代码之家 › 专栏 › 技术社区 › enissay

在软断言使后续测试失败时引发的异常

assertj testing

1

enissay · 技术社区 · 8 年前

根据标题,我正在尝试在循环中运行测试用例。为了能够计算失败断言的数量,我希望如果AssertJ试图断言从方法调用返回的值,它应该 轻轻地 失败一次迭代并继续。否则,它违背了软断言的目的。下面是一个示例:

    public static void main(String[] args) {
        SoftAssertions softAssertions = new SoftAssertions();
        softAssertions.assertThat(throwException(10)).isTrue();
        softAssertions.assertThat(throwException(10)).isTrue();
        softAssertions.assertThat(throwException(1)).isTrue();
        softAssertions.assertAll();
    }

    private static boolean throwException(int stuff){
        if(stuff == 1){
           throw new RuntimeException();
       }
       return true;
    }

输出:

   Exception in thread "main" java.lang.RuntimeException
    at eLCMUpdate.throwException(MyClass.java:101)
    at eLCMUpdate.main(MyClass.java:95)

2 回复 | 直到 8 年前

1

2

Joel Costigliola 8 年前

代码中的问题 softAssertions.assertThat(throwException(10)).isTrue(); 如果抛出异常 assertThat 根本没有执行。

您需要的是延迟评估您正在传递的代码 断言 ,您可以使用AssertJ执行此操作 assertThatCode 如下所示:

final SoftAssertions softAssertions = new SoftAssertions();
softAssertions.assertThatCode(() -> throwException(10)).doesNotThrowAnyException();
softAssertions.assertThatCode(() -> throwException(1)).isInstanceOf(RuntimeException.class);
softAssertions.assertAll();

2

1

gil.fernandes 8 年前

另外:如果在调用之前引发异常 softAssertions.assertAll() 显然,这种方法也永远不会被执行。这实际上是您报告的行为的原因。

只要试着调试代码,您就会看到

如果您将代码更改为:

@Test
void soft_assertions() {
    SoftAssertions softAssertions = new SoftAssertions();
    softAssertions.assertThat(checkCondition(10)).isTrue();
    softAssertions.assertThat(checkCondition(10)).isTrue();
    softAssertions.assertThat(checkCondition(1)).isTrue();
    softAssertions.assertThat(checkCondition(2)).isTrue();
    softAssertions.assertThat(checkCondition(20)).isTrue();
    softAssertions.assertAll();
}

private static boolean checkCondition(int stuff){
    if(stuff == 1 || stuff == 2){
        return false;
    }
    return true;
}

这将输出多个断言的结果,并且不会在评估第一个失败的断言时停止。

输出:

org.assertj.core.api.SoftAssertionError: 
The following 2 assertions failed:
1) 
Expecting:
 <false>
to be equal to:
 <true>
but was not.
at JsonStewardshipCustomerConversionTest.soft_assertions(JsonStewardshipCustomerConversionTest.java:301)
2) 
Expecting:
 <false>
to be equal to:
 <true>
but was not.
at JsonStewardshipCustomerConversionTest.soft_assertions(JsonStewardshipCustomerConversionTest.java:302)

SoftAssertion似乎不符合您的目的。

我建议你改用JUnit 5 assertAll . 根据我的测试,它评估了阻塞和生存异常。这里的问题是您需要JUnit 5,它可能还没有被广泛采用。

这是一个布尔条件失败的示例,也是一个异常。这两个都在控制台中报告。

@Test
void soft_assertions() {
    assertAll("Check condition",
            () -> assertThat(checkCondition(9)).isTrue(),
            () -> assertThat(checkCondition(10)).isTrue(),
            () -> assertThat(checkCondition(11)).isTrue(),
            () -> assertThat(checkCondition(2)).isTrue(), // Throws exception
            () -> assertThat(checkCondition(3)).isFalse(), // fails
            () -> assertThrows(IllegalArgumentException.class, () -> {
                checkCondition(1);
            })
    );
}

private static boolean checkCondition(int stuff) {
    if (stuff == 1 || stuff == 2) {
        throw new IllegalArgumentException();
    }
    return true;
}

org.opentest4j.MultipleFailuresError: Check condition (2 failures)
    <no message> in java.lang.IllegalArgumentException

Expecting:
 <true>
to be equal to:
 <false>
but was not.