scala 无法使用 Gradle 运行 Scalatest
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Can't run Scalatest with Gradle
提问by Joshua MN
task scalaTest(dependsOn: testClasses) << {
description = 'Runs Scalatest suite'
ant.taskdef(name: 'scalatest',
classname: 'org.scalatest.tools.ScalaTestAntTask',
classpath: sourceSets.test.runtimeClasspath.asPath
)
ant.scalatest(runpath: sourceSets.test.output.classesDir,
haltonfailure: 'true', fork: 'false') {
reporter(type: 'stdout')
}
}
I run gradle scalaTestand I get:
我跑gradle scalaTest，我得到：
* What went wrong:
Execution failed for task ':scalaTest'.
> java.lang.NoClassDefFoundError: scala/reflect/ClassManifest$
I am using Scala 2.10.2 and Gradle 1.7
我正在使用 Scala 2.10.2 和 Gradle 1.7
dependencies {
compile 'org.scala-lang:scala-library:2.10.2'
testCompile 'org.scalatest:scalatest:1.3'
testCompile 'org.scalamock:scalamock_2.10:3.0.1'
}
What's wrong??
怎么了？？
回答by rarry
I do not know how to solve this one, but I can offer you a workaround. Annotate your test classes with @RunWith(classOf[JUnitRunner]), like this:
我不知道如何解决这个问题，但我可以为您提供一种解决方法。用 注释您的测试类@RunWith(classOf[JUnitRunner])，如下所示：
import org.scalatest.junit.JUnitRunner
import org.junit.runner.RunWith
@RunWith(classOf[JUnitRunner])
class MyTest extends FunSpec{
}
and then, gradle testshould work.
然后，gradle test应该工作。
Edit:
编辑：
My dependencies:
我的依赖：
compile "org.scala-lang:scala-library:2.10.1"
testCompile "org.scalatest:scalatest_2.10:1.9.1"
回答by Machisuji
You can put the following in your build.gradle:
您可以将以下内容放入您的build.gradle：
task spec(dependsOn: ['testClasses'], type: JavaExec) {
main = 'org.scalatest.tools.Runner'
args = ['-R', 'build/classes/scala/test', '-o']
classpath = sourceSets.test.runtimeClasspath
}
Note:The path my be different depending on the gradle version as pointed out in the comments by @MikeRylander. Before gradle 4 it used to be 'build/classes/test'.
注意：根据@MikeRylander 的评论中指出的 gradle 版本，路径可能会有所不同。在 gradle 4 之前，它曾经是“构建/类/测试”。
Then just run gradle specto execute your tests.
I named the task specbecause there already is a testtask. Dunno if you can override the default test task.
然后只需运行gradle spec以执行您的测试。我命名任务spec是因为已经有一个test任务。不知道您是否可以覆盖默认测试任务。
You can look up the available options here.
您可以在此处查找可用选项。
回答by voxoid
rarry is correct. And even better, you can annotate a base test classwith @RunWith(classOf[JUnitRunner])onceto cause all of your ScalaTest tests to run with the JUnit runner (assuming they extend the base class), e.g.:
拉里是对的。更好的是，您可以使用一次注释基本测试类，以使所有 ScalaTest 测试与 JUnit 运行器一起运行（假设它们扩展了基类），例如：@RunWith(classOf[JUnitRunner])
import org.junit.runner.RunWith
import org.scalatest._
import org.scalatest.junit.JUnitRunner
@RunWith(classOf[JUnitRunner])
abstract class UnitSpec extends FlatSpec with Matchers
回答by Victor Sorokin
As of Gradle 3.2.1, following root build.gradleruns both JUnit and ScalaTest code. This code is for multi-project build, enabled via settings.gradle, that's why subprojectsused.
Plus, it's on purpose uses explicit Gradle API, to minimize Gradle DSL magic.
从 Gradle 3.2.1 开始，root 会同时build.gradle运行 JUnit 和 ScalaTest 代码。此代码用于多项目构建，通过 启用settings.gradle，这就是subprojects使用的原因。
此外，它有意使用显式 Gradle API，以尽量减少 Gradle DSL 的魔力。
description = 'root project'
def enableScalaTest(Project project) {
Task scalaTest = project.task(
[
'dependsOn': 'testClasses',
'description': 'Runs ScalaTest tests in the project'
],
'scalaTest',
{
ext.inputDir = project.tasks.getByName('compileTestScala').destinationDir
inputs.dir(ext.inputDir)
}
)
scalaTest.doLast({
ant.taskdef(name: 'scalatest',
classname: 'org.scalatest.tools.ScalaTestAntTask',
classpath: project.sourceSets.test.runtimeClasspath.asPath)
ant.scalatest(runpath: ext.inputDir,
fork: 'false',
haltonfailure: 'true')
{ reporter(type: 'stdout') }
})
project.getTasks().getByName('build').dependsOn(scalaTest)
}
subprojects {
apply plugin: 'scala'
repositories {
mavenCentral()
}
dependencies {
compile 'org.scala-lang:scala-library:2.12.1'
testCompile 'junit:junit:4.12'
testCompile 'org.scalatest:scalatest_2.12:3.0.1'
}
enableScalaTest(delegate)
}
回答by Developer
This response may be a bit late. But for one using scala with gradle (5.x), the following works.
这个回复可能有点晚了。但是对于将 Scala 与 gradle (5.x) 一起使用的人来说，以下是有效的。
Add the following plugin to gradle.
将以下插件添加到 gradle。
plugins {
id "com.github.maiflai.scalatest" version "0.25"
}
To run the code
运行代码
> gradle test
As a bonus the test results from the above pluginwould also be reported better than the default report.
作为奖励，上述测试结果的plugin报告也将比默认报告更好。
