scala 在 sbt 中为测试配置设置默认环境变量
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/37330416/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Set default env variable for test configuration in sbt
提问by Idon Lee
In my app i have runtime config initialization based on SCALA_ENV variable
在我的应用程序中，我有基于 SCALA_ENV 变量的运行时配置初始化
In build.sbt i need to check if SCALA_ENV var is set, and if not set it to "test" but only for tests configuration, so that when
在 build.sbt 中，我需要检查是否设置了 SCALA_ENV 变量，如果没有将其设置为“测试”，但仅用于测试配置，以便当
sbt test
is run locally on a developer machine without explicitly setting SCALA_ENV it would always use test environment configs
在开发人员机器上本地运行而不显式设置 SCALA_ENV 它将始终使用测试环境配置
I tried
我试过
fork in test := true
envVars in Test := Map("SCALA_ENV" -> "test")
And then later somewhere in tests
然后在测试的某个地方
System.getenv("SCALA_ENV")
But it always returns null...
但它总是返回空...
回答by Vitalii Kotliarenko
I cannot reproduced you issue as desribed:
我无法按照所描述的那样重现您的问题：
//build.sbt
name := "test-env"
version := "1.0"
scalaVersion := "2.11.8"
fork in Test := true
envVars in Test := Map("SCALA_ENV" -> "test")
libraryDependencies ++= Seq("org.scalactic" %% "scalactic" % "2.2.6", "org.scalatest" %% "scalatest" % "2.2.6" % "test")
And test code:
和测试代码：
import org.scalatest.FlatSpec
class TestEnv extends FlatSpec {
it should "get the correct env var value" in {
assert("test" === System.getenv("SCALA_ENV"))
}
}
If I run it with sbt test, it passes. Note, I use sbt 0.13.8, so if your version differs, you may face some wild bug. When I run it from IntelliJ Idea - it fails, and there is no wonder why - IDE uses its own test runner and skips sbt. As a workaround, you can set variable in Run/Debug Configurations-> Environment variableswindow.
如果我用 运行它sbt test，它就会通过。注意，我使用sbt 0.13.8，所以如果你的版本不同，你可能会遇到一些疯狂的错误。当我从 IntelliJ Idea 运行它时 - 它失败了，难怪为什么 - IDE 使用自己的测试运行程序并跳过 sbt。作为解决方法，您可以在Run/Debug Configurations->Environment variables窗口中设置变量。
