如何在 sbt 中的测试任务之前附加自定义任务以执行? [英] How to attach custom task to execute before the test task in sbt?

问题描述

我正在将 SBT 与 Play 框架一起使用.

I'm using SBT with Play Framework.

我创建了一个自定义 TaskKey 来在我的项目中运行 JavaScript 测试:

I created a custom TaskKey to run JavaScript tests in my project:

import sbt._
import sbt.Process._
import PlayProject._

object ApplicationBuild extends Build {

  val testJsTask = TaskKey[Unit]("testJs", "Run javascript tests.") := {}

  val main = PlayProject("xxx", 1.0, Seq())
    .settings(defaultScalaSettings: _*)
    .settings(testJsTask)
}

到目前为止一切顺利.

我想总是在有人执行 test 任务时运行这个 testJsTask.

I want to run this testJsTask always when someone executes the test task.

我猜应该是这样的:

test in Test <<= (test in Test).dependsOn(testJsTask)

我不知道应该如何准确定义它.如何将依赖项添加到现有任务，如测试"或构建"?

I've no idea how it should be defined exactly. How to add a dependency to an existing task like 'test' or 'build'?

更新

@Christian 提出更改后，构建定义如下所示:

After changes proposed by @Christian the build definition looks as follows:

object ApplicationBuild extends Build {
  val testJsTask = TaskKey[Unit]("testJs", "Run tests for javascript client.")
  def testJs = {}

  val main = PlayProject("xxx", 1.0, Seq())
    .settings(defaultScalaSettings: _*)
    .settings(testJsTask := testJs)

  (test in Test) <<= (test in Test) dependsOn (testJs)
}

不幸的是，该解决方案也不起作用:

Unfortunately, the solution doesn't work either:

[error] /xxx/project/Build.scala:21: not found: value test
[error]   (test in Test) <<= (test in Test) dependsOn (testJs)
[error]    ^
[error] one error found
[error] {file:/xxx/project/}default-f468ae/compile:compile: Compilation failed

推荐答案

这是一种方法:

定义任务键:

val testJsTask = TaskKey[Unit]("testJs", "Run javascript tests.")    

在您的项目设置中定义任务:

Define the task in your projects settings:

testJsTask <<= testJs

使测试依赖于它:

(test in Test) <<= (test in Test) dependsOn (testJs)

testJs 可以定义如下:

testJs can be defined as follows:

  def testJs = (streams) map { (s) => {
    s.log.info("Executing task testJs")
    // Your implementation
  }

您必须在项目设置中定义任务依赖项.为了一个正常"的项目，你可以这样做:

You have to define the task dependencies within the projects settings. For a "normal" project, you would do it the following way:

  lazy val testProject = Project(
    "testProject",
    file("testProject"),
    settings = defaultSettings ++ Seq(
      testJsTask <<= testJs,
      (test in Test) <<= (test in Test) dependsOn (testJsTask)
    )
  )

这篇关于如何在 sbt 中的测试任务之前附加自定义任务以执行?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！