如何将 Gradle 中的原生 JUnit 5 支持与 Kotlin DSL 一起使用?

How do I use the native JUnit 5 support in Gradle with the Kotlin DSL?

我想将内置的 JUnit 5 与 Gradle Kotlin DSL 一起使用,因为在构建期间我收到此警告:

WARNING: The junit-platform-gradle-plugin is deprecated and will be discontinued in JUnit Platform 1.3.
Please use Gradle's native support for running tests on the JUnit Platform (requires Gradle 4.6 or higher):
https://junit.org/junit5/docs/current/user-guide/#running-tests-build-gradle

那个链接告诉我把

test {
    useJUnitPlatform()
}

在我的 build.gradle 中,但是 build.gradle.kts 的语法是什么?

我当前的构建文件是

import org.gradle.api.plugins.ExtensionAware

import org.junit.platform.gradle.plugin.FiltersExtension
import org.junit.platform.gradle.plugin.EnginesExtension
import org.junit.platform.gradle.plugin.JUnitPlatformExtension

group = "com.example"
version = "0.0"

// JUnit 5
buildscript {
    repositories {
        mavenCentral()
        jcenter()
    }
    dependencies {
        classpath("org.junit.platform:junit-platform-gradle-plugin:1.2.0")
    }
}

apply {
    plugin("org.junit.platform.gradle.plugin")
}

// Kotlin configuration.
plugins {

    val kotlinVersion = "1.2.41"

    application
    kotlin("jvm") version kotlinVersion
    java // Required by at least JUnit.

    // Plugin which checks for dependency updates with help/dependencyUpdates task.
    id("com.github.ben-manes.versions") version "0.17.0"

    // Plugin which can update Gradle dependencies, use help/useLatestVersions
    id("se.patrikerdes.use-latest-versions") version "0.2.1"

}

application {
    mainClassName = "com.example.HelloWorld"
}

dependencies {
    compile(kotlin("stdlib"))
    // To "prevent strange errors".
    compile(kotlin("reflect"))
    // Kotlin reflection.
    compile(kotlin("test"))
    compile(kotlin("test-junit"))

    // JUnit 5
    testImplementation("org.junit.jupiter:junit-jupiter-api:5.2.0")
    testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:5.2.0")
    testRuntime("org.junit.platform:junit-platform-console:1.2.0")

    // Kotlintest
    testCompile("io.kotlintest:kotlintest-core:3.1.0-RC2")
    testCompile("io.kotlintest:kotlintest-assertions:3.1.0-RC2")
    testCompile("io.kotlintest:kotlintest-runner-junit5:3.1.0-RC2")

}

repositories {
    mavenCentral()
    mavenLocal()
    jcenter()
}

(因为这道题下面有些废话'contains mostly code')。 我试图找到有关如何在 Kotlin DSL 中自定义任务的文档,但找不到任何文档。在正常情况下 Groovy 您可以只写任务的名称,然后在块中更改内容,但 Kotlin DSL 无法识别任务本身,未解决的引用。

此外,这个问题是相关的,但要求创建 new 任务,而不是自定义现有任务:

[编辑 2019 年 4 月] 作为 , three months after I asked this question Gradle actually created a user guide for the Kotlin DSL which can be visited at https://docs.gradle.org/current/userguide/kotlin_dsl.html

他们还在 https://guides.gradle.org/migrating-build-logic-from-groovy-to-kotlin/

添加了从 Groovy 到 Kotlin 的迁移指南

答案:

您要求的语法是

tasks.test {
    // Use the built-in JUnit support of Gradle.
    useJUnitPlatform()
}

这是我从 Kotlin DSL this example file 中得出的 GitHub,或者您可以使用

tasks.withType<Test> {
    useJUnitPlatform()
}

this official userguide which was created a couple of months after this answer was written (thanks to 中用于说明这一点)。

但无论如何您实际上仍在使用 buildscript 块,它本身有点过时,请改用新的 plugins DSL (docs)。新 build.gradle.kts 变为

group = "com.example"
version = "0.0"

plugins {

    val kotlinVersion = "1.2.41"

    application
    kotlin("jvm") version kotlinVersion
    java // Required by at least JUnit.

    // Plugin which checks for dependency updates with help/dependencyUpdates task.
    id("com.github.ben-manes.versions") version "0.17.0"

    // Plugin which can update Gradle dependencies, use help/useLatestVersions
    id("se.patrikerdes.use-latest-versions") version "0.2.1"
}

application {
    mainClassName = "com.example.HelloWorld"
}

dependencies {
    compile(kotlin("stdlib"))
    // To "prevent strange errors".
    compile(kotlin("reflect"))
    // Kotlin reflection.
    compile(kotlin("test"))
    compile(kotlin("test-junit"))

    // JUnit 5
    testImplementation("org.junit.jupiter:junit-jupiter-api:5.2.0")
    testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine:5.2.0")
    testRuntime("org.junit.platform:junit-platform-console:1.2.0")

    // Kotlintest
    testCompile("io.kotlintest:kotlintest-core:3.1.0-RC2")
    testCompile("io.kotlintest:kotlintest-assertions:3.1.0-RC2")
    testCompile("io.kotlintest:kotlintest-runner-junit5:3.1.0-RC2")

}

repositories {
    mavenCentral()
    mavenLocal()
    jcenter()
}

tasks {
    // Use the native JUnit support of Gradle.
    "test"(Test::class) {
        useJUnitPlatform()
    }
}

(由于 Gradle Kotlin DSL 除了几个(未记录的)示例文件 on GitHub 几乎没有任何文档,我在这里记录了一些常见示例。)

(在 GitHub 完成示例项目,自我推销...)

除了已接受的答案之外,还可以使用类型化任务配置,例如:

tasks.withType<Test> {
    useJUnitPlatform()
}

更新:

Gradle 文档供参考 here。具体来说,示例 19 具有:

tasks.withType<JavaCompile> {
    options.isWarnings = true
    // ...
}