未解决的参考：junit

Question

我正在使用Kotlin和LibGDX框架编写游戏。我是测试新手。我已经通过了一些有关如何创建简单测试的基本教程。以及如何配置gradle。我只是单击课程，然后选择创建测试。

但是，当我尝试构建项目时出现错误：

e: /Users/maximternovtsi/bagel/core/src/test/test/BagelTest.kt: (1, 12): Unresolved reference: junit
e: /Users/maximternovtsi/bagel/core/src/test/test/BagelTest.kt: (2, 12): Unresolved reference: junit
e: /Users/maximternovtsi/bagel/core/src/test/test/BagelTest.kt: (6, 6): Unresolved reference: Test
e: /Users/maximternovtsi/bagel/core/src/test/test/BagelTest.kt: (8, 9): Unresolved reference: Assertions
e: /Users/maximternovtsi/bagel/core/src/test/test/BagelTest.kt: (11, 6): Unresolved reference: Test
e: /Users/maximternovtsi/bagel/core/src/test/test/BagelTest.kt: (13, 9): Unresolved reference: Assertions

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':core:compileKotlin'.

BagelTest看起来像这样：

import org.junit.jupiter.api.Test

import org.junit.jupiter.api.BeforeEach


internal class BagelTest {


    @BeforeEach
    internal fun setUp() {
    }

    @Test
    internal fun passes() {
        assert(true)
    }
}

我猜gradle看不到junit，但是我遵循了所有说明。也许我错过了一些东西。

   buildscript {
    repositories {

        jcenter()
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.0.0'
        classpath 'org.multi-os-engine:moe-gradle:1.4.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.1.51"
    }
}

allprojects {
    apply plugin: "eclipse"
    apply plugin: "idea"

    version = '1.0'
    ext {
        appName = "Bagel"
        gdxVersion = '1.9.8'
        junitJupiterVersion  = '5.0.2'
    }

    repositories {
        mavenLocal()
        mavenCentral()
        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
        maven { url "https://oss.sonatype.org/content/repositories/releases/" }
    }
}

project(":desktop") {
    apply plugin: "kotlin"

    dependencies {
        compile project(":core")
        compile "com.badlogicgames.gdx:gdx-backend-lwjgl:$gdxVersion"
        compile "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-desktop"
        compile "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-desktop"
        compile "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-desktop"
    }
}

project(":android") {
    apply plugin: "android"
    apply plugin: "kotlin-android"

    configurations { natives }

    dependencies {
        compile project(":core")
        compile "org.jetbrains.kotlin:kotlin-stdlib:1.1.51"
        compile "com.badlogicgames.gdx:gdx-backend-android:$gdxVersion"
        natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-armeabi"
        natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-armeabi-v7a"
        natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-arm64-v8a"
        natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-x86"
        natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-x86_64"
        compile "com.badlogicgames.gdx:gdx-box2d:$gdxVersion"
        natives "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-armeabi"
        natives "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-armeabi-v7a"
        natives "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-arm64-v8a"
        natives "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-x86"
        natives "com.badlogicgames.gdx:gdx-box2d-platform:$gdxVersion:natives-x86_64"
        compile "com.badlogicgames.gdx:gdx-freetype:$gdxVersion"
        natives "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-armeabi"
        natives "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-armeabi-v7a"
        natives "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-arm64-v8a"
        natives "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-x86"
        natives "com.badlogicgames.gdx:gdx-freetype-platform:$gdxVersion:natives-x86_64"
    }
}

project(":core") {
    apply plugin: "kotlin"

    /*kotlin {
        experimental {
            coroutines 'enable'
        }
    }*/

    sourceSets.test.java.srcDirs = ["/test"]

    dependencies {
        compile "com.badlogicgames.gdx:gdx:$gdxVersion"
        compile "com.badlogicgames.gdx:gdx-box2d:$gdxVersion"
        compile "com.badlogicgames.gdx:gdx-freetype:$gdxVersion"
        compile "org.jetbrains.kotlin:kotlin-stdlib:1.1.51"
        compile "com.badlogicgames.ashley:ashley:1.7.3"

        testCompile("org.junit.jupiter:junit-jupiter-api:${junitJupiterVersion}")
//        testCompile "org.mockito:mockito-core:2.2.7"
    }
}

tasks.eclipse.doLast {
    delete ".project"
}

Answer 1

就我而言，问题是我没有导入

androidTestImplementation "org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version"

2020 年 5 月更新：这应该放在 build.gradle 中dependencies { }。从 Android Studio 版本 4 和当前的 gradle 版本开始，该变量应命名为 $ version_kotlin以便 gradle 正确重新同步。

Answer 2

我已经通过以下步骤为 libGdx+kotlin 配置了 junit 测试：

1. 在核心项目文件夹中创建“test”文件夹 - 它将是测试代码文件的根文件夹：[project-root]/core/test

2. 将项目主 gradle.build 文件中的 junit 依赖项添加到 project(":core") 部分：

   project(":core") {
     ....
     dependencies {
       ...
       testCompile 'junit:junit:4.12'
       testCompile "org.jetbrains.kotlin:kotlin-test-junit:$kotlinVersion"
      }
    }
   

3. 在 [project-root]/core/build.gradle 文件中添加测试源集，就在 'sourceSets.main.java.srcDirs = [ "src/" ]' 行下：

   sourceSets.test.java.srcDirs = ["test/"]
   

4. 现在 [project-root]/core/test 文件夹将以绿色突出显示，这意味着该文件夹被识别为测试源目录。现在您可以使用简单的 junut 测试在那里放置一个 .kt 文件，例如：

   import org.junit.Test
   import kotlin.test.assertEquals
   
   class SimpleTest{
   
       @Test
       fun testEquals(){
           var b=true
           assertEquals(true,b)
       }
   }