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PlayFramework ScalaTest ScalaCheck

发布时间：2020-12-16 18:44:05 所属栏目：安全 来源：网络整理
导读：我正在使用标题中提到的框架,具有以下配置： "com.typesafe.play" % "sbt-plugin" % "2.4.2""org.scalacheck" %% "scalacheck" % "1.12.4" % "test""org.scalatest" %% "scalatest" % "2.2.5" % "test""org.scalatestplus" %% "play" % "1.4.0-M4" % "test"
我正在使用标题中提到的框架,具有以下配置： 

"com.typesafe.play" % "sbt-plugin" % "2.4.2"

"org.scalacheck" %% "scalacheck" % "1.12.4" % "test"
"org.scalatest" %% "scalatest" % "2.2.5" % "test"
"org.scalatestplus" %% "play" % "1.4.0-M4" % "test"

通过简单的测试来演示：

class User
        extends FlatSpec
        with Matchers
        with Checkers {
    it should "do scala check stuff" in {
        check( ( a: Int ) ? a > 100 )
    }

    it should "do scala check stuff II" in {
        check( ( a: Int ) ? true )
    }
}

它似乎基本上工作,但sbt测试输出杂乱有例外.

[project-id] $test
[info] User:
[info] p.a.l.c.ActorSystemProvider - Starting application default Akka system: application
[info] p.a.l.c.ActorSystemProvider - Shutdown application default Akka system: application
[info] - should do scala check stuff *** FAILED ***
[info]   GeneratorDrivenPropertyCheckFailedException was thrown during property evaluation.
[info]    (User.scala:157)
[info]     Falsified after 0 successful property evaluations.
[info]     Location: (User.scala:157)
[info]     Occurred when passed generated values (
[info]       arg0 = -1
[info]     )
Exception in thread "Thread-31" java.lang.ClassCastException: cannot assign instance of scala.collection.immutable.List$SerializationProxy to field org.scalacheck.Test$Failed.args of type scala.collection.immutable.List in instance of org.scalacheck.Test$Failed
    at java.io.ObjectStreamClass$FieldReflector.setObjFieldValues(ObjectStreamClass.java:2089)
    at java.io.ObjectStreamClass.setObjFieldValues(ObjectStreamClass.java:1261)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1999)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1993)
    at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1918)
    at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
    at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
    at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
    at org.scalatest.tools.Framework$ScalaTestRunner$Skeleton$1$React.react(Framework.scala:953)
    at org.scalatest.tools.Framework$ScalaTestRunner$Skeleton$1.run(Framework.scala:942)
    at java.lang.Thread.run(Thread.java:745)
Reporter completed abruptly with an exception after receiving event: TestFailed(Ordinal(0,3),GeneratorDrivenPropertyCheckFailedException was thrown during property evaluation.
 (User.scala:157)
  Falsified after 0 successful property evaluations.
  Location: (User.scala:157)
  Occurred when passed generated values (
    arg0 = -1
  ),User,test.api.controller.User,Some(test.api.controller.User),should do scala check stuff,Vector(),Some(org.scalatest.exceptions.GeneratorDrivenPropertyCheckFailedException: GeneratorDrivenPropertyCheckFailedException was thrown during property evaluation.
 (User.scala:157)
  Falsified after 0 successful property evaluations.
  Location: (User.scala:157)
  Occurred when passed generated values (
    arg0 = -1
  )),Some(3210),Some(IndentedText(- should do scala check stuff,0)),Some(SeeStackDepthException),None,pool-1-thread-1-ScalaTest-running-User,1440662150684).
java.net.SocketException: Broken pipe
    at java.net.SocketOutputStream.socketWrite0(Native Method)
    at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
    at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
    at java.io.ObjectOutputStream$BlockDataOutputStream.drain(ObjectOutputStream.java:1877)
    at java.io.ObjectOutputStream$BlockDataOutputStream.setBlockDataMode(ObjectOutputStream.java:1786)
    at java.io.ObjectOutputStream.writeNonProxyDesc(ObjectOutputStream.java:1286)
    at java.io.ObjectOutputStream.writeClassDesc(ObjectOutputStream.java:1231)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1427)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeFatalException(ObjectOutputStream.java:1577)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:351)
    at org.scalatest.tools.SocketReporter.apply(SocketReporter.scala:31)
    at org.scalatest.DispatchReporter$Propagator$$anonfun$run$1.apply(DispatchReporter.scala:240)
    at org.scalatest.DispatchReporter$Propagator$$anonfun$run$1.apply(DispatchReporter.scala:239)
    at scala.collection.immutable.List.foreach(List.scala:381)
    at org.scalatest.DispatchReporter$Propagator.run(DispatchReporter.scala:239)
    at java.lang.Thread.run(Thread.java:745)
Reporter completed abruptly with an exception after receiving event: TestStarting(Ordinal(0,4),should do scala check stuff II,Some(MotionToSuppress),Some(LineInFile(160,User.scala)),1440662150704).
java.net.SocketException: Broken pipe
    at java.net.SocketOutputStream.socketWrite0(Native Method)
    at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
    at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
    at java.io.ObjectOutputStream$BlockDataOutputStream.drain(ObjectOutputStream.java:1877)
    at java.io.ObjectOutputStream$BlockDataOutputStream.setBlockDataMode(ObjectOutputStream.java:1786)
    at java.io.ObjectOutputStream.writeNonProxyDesc(ObjectOutputStream.java:1286)
    at java.io.ObjectOutputStream.writeClassDesc(ObjectOutputStream.java:1231)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1427)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeFatalException(ObjectOutputStream.java:1577)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:351)
    at org.scalatest.tools.SocketReporter.apply(SocketReporter.scala:31)
    at org.scalatest.DispatchReporter$Propagator$$anonfun$run$1.apply(DispatchReporter.scala:240)
    at org.scalatest.DispatchReporter$Propagator$$anonfun$run$1.apply(DispatchReporter.scala:239)
    at scala.collection.immutable.List.foreach(List.scala:381)
    at org.scalatest.DispatchReporter$Propagator.run(DispatchReporter.scala:239)
    at java.lang.Thread.run(Thread.java:745)
[info] p.a.l.c.ActorSystemProvider - Starting application default Akka system: application
[info] p.a.l.c.ActorSystemProvider - Shutdown application default Akka system: application
[info] - should do scala check stuff II
Reporter completed abruptly with an exception after receiving event: TestSucceeded(Ordinal(0,5),Some(506),Some(IndentedText(- should do scala check stuff II,1440662151215).
java.net.SocketException: Broken pipe
    at java.net.SocketOutputStream.socketWrite0(Native Method)
    at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
    at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
    at java.io.ObjectOutputStream$BlockDataOutputStream.drain(ObjectOutputStream.java:1877)
    at java.io.ObjectOutputStream$BlockDataOutputStream.setBlockDataMode(ObjectOutputStream.java:1786)
    at java.io.ObjectOutputStream.writeNonProxyDesc(ObjectOutputStream.java:1286)
    at java.io.ObjectOutputStream.writeClassDesc(ObjectOutputStream.java:1231)
    at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1427)
    at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
    at java.io.ObjectOutputStream.writeFatalException(ObjectOutputStream.java:1577)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:351)
    at org.scalatest.tools.SocketReporter.apply(SocketReporter.scala:31)
    at org.scalatest.DispatchReporter$Propagator$$anonfun$run$1.apply(DispatchReporter.scala:240)
    at org.scalatest.DispatchReporter$Propagator$$anonfun$run$1.apply(DispatchReporter.scala:239)
    at scala.collection.immutable.List.foreach(List.scala:381)
    at org.scalatest.DispatchReporter$Propagator.run(DispatchReporter.scala:239)
    at java.lang.Thread.run(Thread.java:745)
Reporter completed abruptly with an exception after receiving event: SuiteCompleted(Ordinal(0,6),Some(3850),Some(TopOfClass(test.api.controller.User)),pool-1-thread-1,1440662151227).
java.net.SocketException: Broken pipe
    at java.net.SocketOutputStream.socketWrite0(Native Method)
    at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
    at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
    at java.io.ObjectOutputStream$BlockDataOutputStream.drain(ObjectOutputStream.java:1877)
    at java.io.ObjectOutputStream$BlockDataOutputStream.writeByte(ObjectOutputStream.java:1915)
    at java.io.ObjectOutputStream.writeFatalException(ObjectOutputStream.java:1576)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:351)
    at org.scalatest.tools.SocketReporter.apply(SocketReporter.scala:31)
    at org.scalatest.DispatchReporter$Propagator$$anonfun$run$1.apply(DispatchReporter.scala:240)
    at org.scalatest.DispatchReporter$Propagator$$anonfun$run$1.apply(DispatchReporter.scala:239)
    at scala.collection.immutable.List.foreach(List.scala:381)
    at org.scalatest.DispatchReporter$Propagator.run(DispatchReporter.scala:239)
    at java.lang.Thread.run(Thread.java:745)
Reporter completed abruptly with an exception after receiving event: RunCompleted(Ordinal(0,7),Some(4099),Some(Summary(1,1,main,1440662151252).
java.net.SocketException: Broken pipe
    at java.net.SocketOutputStream.socketWrite0(Native Method)
    at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
    at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
    at java.io.ObjectOutputStream$BlockDataOutputStream.drain(ObjectOutputStream.java:1877)
    at java.io.ObjectOutputStream$BlockDataOutputStream.writeByte(ObjectOutputStream.java:1915)
    at java.io.ObjectOutputStream.writeFatalException(ObjectOutputStream.java:1576)
    at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:351)
    at org.scalatest.tools.SocketReporter.apply(SocketReporter.scala:31)
    at org.scalatest.DispatchReporter$Propagator$$anonfun$run$1.apply(DispatchReporter.scala:240)
    at org.scalatest.DispatchReporter$Propagator$$anonfun$run$1.apply(DispatchReporter.scala:239)
    at scala.collection.immutable.List.foreach(List.scala:381)
    at org.scalatest.DispatchReporter$Propagator.run(DispatchReporter.scala:239)
    at java.lang.Thread.run(Thread.java:745)
Reporter completed abruptly with an exception on invocation of the dispose method.
java.net.SocketException: Broken pipe
    at java.net.SocketOutputStream.socketWrite0(Native Method)
    at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
    at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
    at java.io.ObjectOutputStream$BlockDataOutputStream.drain(ObjectOutputStream.java:1877)
    at java.io.ObjectOutputStream$BlockDataOutputStream.flush(ObjectOutputStream.java:1822)
    at java.io.ObjectOutputStream.flush(ObjectOutputStream.java:719)
    at org.scalatest.tools.SocketReporter.dispose(SocketReporter.scala:37)
    at org.scalatest.DispatchReporter$.propagateDispose(DispatchReporter.scala:312)
    at org.scalatest.DispatchReporter$Propagator$$anonfun$run$2.apply(DispatchReporter.scala:251)
    at org.scalatest.DispatchReporter$Propagator$$anonfun$run$2.apply(DispatchReporter.scala:250)
    at scala.collection.immutable.List.foreach(List.scala:381)
    at org.scalatest.DispatchReporter$Propagator.run(DispatchReporter.scala:250)
    at java.lang.Thread.run(Thread.java:745)
[info] ScalaCheck
[info] Passed: Total 0,Failed 0,Errors 0,Passed 0
[info] ScalaTest
[info] Run completed in 4 seconds,976 milliseconds.
[info] Total number of tests run: 0
[info] Suites: completed 0,aborted 0
[info] Tests: succeeded 0,failed 0,canceled 0,ignored 0,pending 0
[info] No tests were executed.
[error] Failed: Total 2,Failed 1,Passed 1
[error] Failed tests:
[error]     test.api.controller.User
[error] (api/test:test) sbt.TestsFailedException: Tests unsuccessful
[error] Total time: 6 s,completed 27.08.2015 09:55:51

我还对日志末尾有3个测试摘要这一事实感到困惑,其中2包含没有有用的信息.

解决方法

您的测试和代码似乎没问题.

你可能已经知道了,但无论如何,你的第一次测试只是失败了(不要介意奇怪的例外).

修复第一个测试,替换为：

check( ( a: Int ) ? a / 1 == a )

我们得到：

[info] User:
[info] - should do scala check stuff (1 second,421 milliseconds)
[info] - should do scala check stuff II (28 milliseconds)
[info] ScalaCheck
[info] Passed: Total 0,Passed 0
[info] ScalaTest
[info] Run completed in 12 seconds,132 milliseconds.
[info] Total number of tests run: 2
[info] Suites: completed 1,aborted 0
[info] Tests: succeeded 2,pending 0
[info] All tests passed.
[info] Passed: Total 2,Passed 2
[success] Total time: 23 s,completed Feb 14,2016 12:44:44 AM

那3个测试摘要怎么样？

ScalaCheck和ScalaTest是两个独立的测试框架,尽管您在ScalaTest中使用了ScalaCheck的一些功能.但是sbt并不知道这一点,因为你包含了两个框架,它会查找两种测试,并报告每个框架的结果.

这就是为什么ScalaCheck的报告打印有0次运行测试.在此之后,运行ScalaTest的测试并获得报告.第三个也是最后一个报告来自sbt本身,总结了所有测试框架的结果.

回到奇怪的例外情况,它们只会在您的测试失败时出现,所以您不必过于担心它们.但如果它真的很烦人,请将其添加到build.sbt：

fork in Test := false

奇怪的例外情况将会消失.

（编辑：李大同）

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