如何在Play中强制Logger.debug输出！框架specs2测试?

问题描述

限时删除！！

默认情况下，所有Logger输出(在应用程序运行时可见)在测试应用程序时处于静音状态.

By default all Logger output, visible when an application is running, is mute when the application is tested.

如何强制将调试，信息等显示在specs2报告中?

How to force the debugs, infos etc. to be shown in the specs2 reports?

推荐答案

首先，您可能会喜欢一些背景，为什么在测试模式下禁用了日志记录.这是Guillame Bort在游戏论坛中对一个问题的回答(请参阅):

First off, you may like some background why logging is disabled in test mode. This was Guillame Bort's answer to a question in the play forum (see this thread):

作为一种解决方法，我这样创建了自己的记录器(Scala代码):

As a workaround, I created my own logger like this (Scala code):

import play.api.{Play, LoggerLike, Logger}
import org.slf4j.LoggerFactory
import org.slf4j.impl.SimpleLoggerFactory

object MyLogger extends LoggerLike {

  val factory = if (Play.isTest(Play.current)) {
    new SimpleLoggerFactory()
  } else {
    LoggerFactory.getILoggerFactory
  }

  val redirectDebugToInfo = factory.isInstanceOf[SimpleLoggerFactory]

  val logger = factory.getLogger("application")

  def apply(name: String): Logger = new Logger(factory.getLogger(name))

  def apply[T](clazz: Class[T]): Logger = new Logger(factory.getLogger(clazz.getCanonicalName))

  // this method is to make debug statements to show up in test mode
  override def debug(m: => String) = {
    if (redirectDebugToInfo) {
      info(m)
    } else {
      super.debug(m)
    }
  }
}

我一般不了解这段代码如何处理PermGen泄漏，但是到目前为止，我还没有遇到这个问题.要使其正常工作，您需要添加以下依赖项:

I don't know how this code behaves regarding the PermGen leak in general, but so far I didn't have that problem.To make it work you need to add this dependency:

"org.slf4j" % "slf4j-simple" % "1.6.4"

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