软件测试学习笔记丨 JUnit5 动态测试的生命周期

2024-07-04
北京
本文字数：2006 字
阅读完需：约 7 分钟

本文转自测试人社区，原文链接：https://ceshiren.com/t/topic/28219

动态测试的生命周期方法

在动态测试中，@BeforeEach 和 @AfterEach 生命周期方法会针对每个 @TestFactory 方法执行
不会针对每个动态测试执行。

静态测试用例

static Test 的每一个参数用例都会执行一次 BeforeEach 和 AfterEach

package com.junit5.dynamictest_lifecycle;
import org.junit.jupiter.api.*;import org.junit.jupiter.params.ParameterizedTest;import org.junit.jupiter.params.provider.MethodSource;
import java.util.stream.Stream;
import static org.hamcrest.MatcherAssert.*;import static org.hamcrest.Matchers.*;
public class StaticTest {
    static int m=0;
    @BeforeAll    static void beforeAll(){        System.out.println("BeforeAll");    }
    @BeforeEach    void beforeEach(){        System.out.println("BeforeEach");        m=8;    }

    @ParameterizedTest    @MethodSource    void test01(int arg){
        System.out.println("m:"+m);//8,8,8        m+=arg;        System.out.println("m:"+m);// 14,15,16        assertThat(arg, is(greaterThan(2)));    }
    static Stream test01(){        return Stream.of(6,7,8);    }
    @Test    void test02(){        System.out.println("test02");    }
    @AfterEach    void afterEach(){        System.out.println("AfterEach");    }


    @AfterAll    static void afterAll(){        System.out.println("AfterAll");    }}

复制代码

动态测试用例

Dynamic Test 的方法只会执行一次 BeforeEach 和 AfterEach
默认把 BeforeEach 和 AfterEach 的生命周期提升为了 BeforeAll、AfterAll

package com.junit5.dynamictest_lifecycle;
import org.junit.jupiter.api.*;import org.junit.jupiter.params.ParameterizedTest;import org.junit.jupiter.params.provider.MethodSource;
import java.util.stream.Stream;
import static org.hamcrest.MatcherAssert.assertThat;import static org.hamcrest.Matchers.greaterThan;import static org.hamcrest.Matchers.is;
public class DynamicTest01 {
    static int m = 0;
    @BeforeAll    static void beforeAll() {        System.out.println("BeforeAll");    }
    @BeforeEach    void beforeEach() {        System.out.println("BeforeEach");        m = 8;    }
    /**     * BeforeEach和AfterEach是针对@TestFactory运行的，不是针对每个测试用例运行的     *     * @return     */    @TestFactory    Stream<DynamicTest> dynamicTestStream() {
        return Stream.of(6, 7, 8)                .map(arg ->                        DynamicTest.dynamicTest("test" + arg, () -> {
                            System.out.println("m:" + m);//8,8,8 //8,14,21                            m += arg;                            System.out.println("m:" + m);// 14,15,16 //14,21,29                            assertThat(arg, is(greaterThan(2)));                        })                );    }
    @TestFactory    Stream<DynamicContainer> dynamicTestStream2() {
        return Stream.of(11, 12, 13)                .map(arg -> DynamicContainer.dynamicContainer("dynamicContainer",
                        Stream.of(                                DynamicTest.dynamicTest("test1" + arg, () -> {                                    System.out.println("1m:" + m);//8,8,8 //8,14,21                                    m += arg;                                    System.out.println("1m:" + m);// 14,15,16 //14,21,29                                    assertThat(arg, is(greaterThan(2)));                                }),                                DynamicTest.dynamicTest("test2" + arg, () -> {                                    System.out.println("2m:" + m);//8,8,8 //8,14,21                                    m += arg;                                    System.out.println("2m:" + m);// 14,15,16 //14,21,29                                    assertThat(arg, is(greaterThan(2)));                                })                        ))
                );    }
    @AfterEach    void afterEach() {        System.out.println("AfterEach");    }

    @AfterAll    static void afterAll() {        System.out.println("AfterAll");    }}