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  • 【JUnit】JUnit 超时测试

    环境

    • JDK 6
    • JUnit 4.13
    • Spring Tool Suite 4.6.2
    • Maven 3.6.3

    说明

    测试超时有两种方式,一种是使用 @Test 注解的 timeout 属性,另一种是使用 @Rule。
    两种方式有一点区别,其中 @Test 方式运行的,测试方法和 @Before @After 不在同一线程内;
    @Rule 方式的,都是在同一线程之内运行。如果对 Rules 不熟悉,可以参考前面的 JUnit Rules 文章。

    超时测试示例

    pom.xml

    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
        <groupId>jiangbo.java.junit</groupId>
        <artifactId>10-java-junit-timeout</artifactId>
        <version>1.0.0</version>
        <description>JUnit 超时测试示例</description>
    
        <properties>
            <maven.compiler.source>1.6</maven.compiler.source>
            <maven.compiler.target>1.6</maven.compiler.target>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        </properties>
    
        <dependencies>
    
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>4.13</version>
                <scope>test</scope>
            </dependency>
    
        </dependencies>
    
    </project>
    

    Caculator

    package jiangbo.java.junit;
    
    public class Caculator {
    
        public static int add(int number1, int number2) {
    
            return number1 + number2;
        }
    
        public static int subtract(int number1, int number2) {
    
            return number1 - number2;
        }
    
        public static int divide(int number1, int number2) {
    
            return number1 / number2;
        }
    }
    

    CaculatorTest1

    package jiangbo.java.junit;
    
    import static org.junit.Assert.assertEquals;
    
    import java.io.IOException;
    
    import org.junit.After;
    import org.junit.AfterClass;
    import org.junit.Before;
    import org.junit.BeforeClass;
    import org.junit.Test;
    
    public class CaculatorTest1 {
    
        @Test(timeout = 1000)
        public void testAdd() {
    
            System.out.println("testAdd: " + Thread.currentThread());
            int number = Caculator.add(1, 1);
            assertEquals(2, number);
        }
    
        @BeforeClass
        public static void setUpClass() {
    
            System.out.println("BeforeClass: " + Thread.currentThread());
        }
    
        @AfterClass
        public static void tearDownClass() throws IOException {
    
            System.out.println("@AfterClass: " + Thread.currentThread());
        }
    
        @Before
        public void setUp() {
    
            System.out.println("@Before: " + Thread.currentThread());
        }
    
        @After
        public void tearDown() {
    
            System.out.println("@After: " + Thread.currentThread());
        }
    }
    

    CaculatorTest2

    package jiangbo.java.junit;
    
    import static org.junit.Assert.assertEquals;
    
    import java.io.IOException;
    
    import org.junit.After;
    import org.junit.AfterClass;
    import org.junit.Before;
    import org.junit.BeforeClass;
    import org.junit.Rule;
    import org.junit.Test;
    import org.junit.rules.TestRule;
    import org.junit.rules.Timeout;
    
    public class CaculatorTest2 {
    
        @Rule
        public TestRule rule = Timeout.seconds(1);
    
        @Test
        public void testAdd() {
    
            System.out.println("testAdd: " + Thread.currentThread());
            int number = Caculator.add(1, 1);
            assertEquals(2, number);
        }
    
        @BeforeClass
        public static void setUpClass() {
    
            System.out.println("BeforeClass: " + Thread.currentThread());
        }
    
        @AfterClass
        public static void tearDownClass() throws IOException {
    
            System.out.println("@AfterClass: " + Thread.currentThread());
        }
    
        @Before
        public void setUp() {
    
            System.out.println("@Before: " + Thread.currentThread());
        }
    
        @After
        public void tearDown() {
    
            System.out.println("@After: " + Thread.currentThread());
        }
    }
    

    运行

    通过运行 CaculatorTest1 测试类,控制台输出:

    BeforeClass: Thread[main,5,main]
    @Before: Thread[main,5,main]
    testAdd: Thread[Time-limited test,5,FailOnTimeoutGroup]
    @After: Thread[main,5,main]
    @AfterClass: Thread[main,5,main]
    

    通过运行 CaculatorTest2 测试类,控制台输出:

    BeforeClass: Thread[main,5,main]
    @Before: Thread[Time-limited test,5,FailOnTimeoutGroup]
    testAdd: Thread[Time-limited test,5,FailOnTimeoutGroup]
    @After: Thread[Time-limited test,5,FailOnTimeoutGroup]
    @AfterClass: Thread[main,5,main]
    
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  • 原文地址:https://www.cnblogs.com/jiangbo44/p/13149423.html
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