Spring Boot和JUnit 5之间的交互-必须使用整体工件，而不是个体? [英] Interaction between Spring Boot and JUnit 5 -- must use the overall artifacts not the individuals?

问题描述

此问题已被问过(例如，此处)，但是我的观察与以前的报道不同.

This question has been asked before (e.g. here), but my observation was not the same as those previously reported.

我注意到要使JUnit 5正常工作，我必须包括整个JUnit 5工件

I noticed that to get JUnit 5 to work, I must include the overall JUnit 5 artifact

testImplementation('org.junit.jupiter:junit-jupiter:5.5.1')

如果我改为包含各个工件，那么将不会进行JUnit测试

If I, instead, included the individual artifacts, then the JUnit test would not be picked up

testImplementation('org.junit.platform:junit-platform-runner:1.3.1')
testImplementation('org.junit.platform:junit-platform-launcher:1.0.0')
testImplementation('org.junit.jupiter:junit-jupiter-engine:5.5.1')
testImplementation('org.junit.jupiter:junit-jupiter-api:5.5.1')
testImplementation('org.junit.jupiter:junit-jupiter-params:5.5.1')
testImplementation('org.junit.vintage:junit-vintage-engine:5.5.1')

有人以前见过类似的东西吗?

Has anyone seen something similar before?

(我还在非Spring-Boot项目中尝试过此方法-在那种情况下，可以包含单个工件.这引起了很多混乱.)

(I also tried this with a non-Spring-Boot project -- in that case it was okay to include the individual artifacts. This was causing a lot of confusion.)

我在这里用gradle显示结果，但是我在maven中也得到了类似的结果.

Here I am showing the result with gradle, but I have had similar result with maven too.

我正在使用Gradle 5.4.1，Spring Boot 2.1.7.RELEASE和JUnit 5.5.1

我包括完整的build.gradle和下面的测试课程

I am including the full build.gradle and the test class below

build.gradle

plugins {
    id 'org.springframework.boot' version '2.1.7.RELEASE'
    id 'java'
}

apply plugin: 'io.spring.dependency-management'

group = 'com.example'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '1.8'

repositories {
    mavenCentral()
}

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter'
    testImplementation 'org.springframework.boot:spring-boot-starter-test'

    testImplementation('org.junit.jupiter:junit-jupiter:5.5.1')

//  testImplementation('org.junit.platform:junit-platform-runner:1.3.1')
//  testImplementation('org.junit.platform:junit-platform-launcher:1.0.0')
//  testImplementation('org.junit.jupiter:junit-jupiter-engine:5.5.1')
//  testImplementation('org.junit.jupiter:junit-jupiter-api:5.5.1')
//  testImplementation('org.junit.jupiter:junit-jupiter-params:5.5.1')
//  testImplementation('org.junit.vintage:junit-vintage-engine:5.5.1')

}

test {
    useJUnitPlatform()
}

DemoApplicationTest.java

package com.example.demo;

import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

public class DemoApplicationTests {

    @Test
    public void failMe() {
        Assertions.assertTrue(Boolean.FALSE);
    }

}

请注意，在这种情况下，我希望测试方法failMe()中会引发异常-以便证明测试方法已被跑步者采用，并且未被默默忽略.

Note that in this case I was expecting an exception be thrown in the test method failMe() -- so as to prove that the test method had been picked up by the runner and was not silently ignored.

推荐答案

感谢@johanneslink的提示(在开头的问题的评论中)，现在我认为我对问题的理解更好:

Thanks for the hint from @johanneslink (in the comment of the opening question), now I think I understand better the issues:

最好使用聚合工件

testImplementation('org.junit.jupiter:junit-jupiter:5.5.1')

如果您真的要使用单个工件，请确保它们的版本兼容

此组合将有效

testImplementation('org.junit.platform:junit-platform-launcher:1.5.1')
testImplementation('org.junit.jupiter:junit-jupiter-engine:5.5.1')
testImplementation('org.junit.jupiter:junit-jupiter-api:5.5.1')

但不是这个

testImplementation('org.junit.platform:junit-platform-launcher:1.3.1')
testImplementation('org.junit.jupiter:junit-jupiter-engine:5.5.1')
testImplementation('org.junit.jupiter:junit-jupiter-api:5.5.1')

(其他三个工件不相关，因此我在这里省略了它们.例如，根据《 JUnit 5用户指南》

(The other three artifacts are not relevant so I am omitting them here. For example, according to the JUnit 5 User Guide

junit-platform-runner

用于在JUnit 4环境中的JUnit平台上执行测试和测试套件的运行器.

Runner for executing tests and test suites on the JUnit Platform in a JUnit 4 environment.

，与此处无关.

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