JUnit 5超时示例

偏执的太偏执、 2023-02-15 05:08 6阅读 0赞

在JUnit 5中，如果执行时间超过给定的持续时间，我们可以使用`@Timeout`使测试失败。

*PS已通过JUnit 5.5.2测试*

## 1. @超时 ##

TimeOutExample1.java

package com.mkyong.timeout;
    
    import org.junit.jupiter.api.BeforeEach;
    import org.junit.jupiter.api.Test;
    import org.junit.jupiter.api.Timeout;
    
    import java.util.concurrent.TimeUnit;
    
    public class TimeOutExample1 {
    
        // timed out after 5 seconds
        @BeforeEach
        @Timeout(5)
        void setUpDB() throws InterruptedException {
            //TimeUnit.SECONDS.sleep(10);
        }
    
        // timed out after 500 miliseconds
        @Test
        @Timeout(value = 500, unit = TimeUnit.MILLISECONDS)
        void test_this() {
        }
    
    }

## 2. assertTimeout ##

2.1我们还可以使用`assertTimeout`来使测试超时。

TimeOutExample2.java

package com.mkyong.timeout;
    
    import org.junit.jupiter.api.BeforeEach;
    import org.junit.jupiter.api.Test;
    import org.junit.jupiter.api.Timeout;
    
    import java.time.Duration;
    import java.util.concurrent.TimeUnit;
    
    import static org.junit.jupiter.api.Assertions.assertTimeout;
    
    public class TimeOutExample2 {
    
        // timed out after 5 seconds
        @Test
        void test_timeout_fail() {
            // assertTimeout(Duration.ofSeconds(5), () -> delaySecond(10)); // this will fail
    
            assertTimeout(Duration.ofSeconds(5), () -> delaySecond(1)); // pass
        }
    
        void delaySecond(int second) {
            try {
                TimeUnit.SECONDS.sleep(second);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    
    }

## 下载源代码 ##

> $ git clone [https://github.com/mkyong/junit-examples][https_github.com_mkyong_junit-examples]  
> $ cd junit5-examples  
> $检查src / test / java / com / mkyong / timeout / \*。java

# 参考文献 #

*  [JUnit 5超时][JUnit 5]
 *  [JUnit 5断言][JUnit 5 1]

标签： [junit 5][] [超时][Link 1]

> 翻译自: [https://mkyong.com/junit5/junit-5-timeouts-examples/][https_mkyong.com_junit5_junit-5-timeouts-examples]

[https_github.com_mkyong_junit-examples]: https://github.com/mkyong/junit-examples
[JUnit 5]: https://junit.org/junit5/docs/current/user-guide/#writing-tests-declarative-timeouts
[JUnit 5 1]: https://junit.org/junit5/docs/current/user-guide/#writing-tests-assertions
[junit 5]: https://mkyong.com/tag/junit-5/
[Link 1]: https://mkyong.com/tag/timeout/
[https_mkyong.com_junit5_junit-5-timeouts-examples]: https://mkyong.com/junit5/junit-5-timeouts-examples/