播放框架2.1.x与slf4j-api的测试冲突 [英] play framework 2.1.x test conflict with slf4j-api

问题描述

我有一个Play Framework 2.1.0应用程序，并且由于我一直在努力寻找原因的系统问题，即使是最简单的单元测试也无法运行.给定这条路线:

i've got a Play Framework 2.1.0 application, and even the simplest unit test will not run due to a system problem i'm struggling to track down. given this route:

POST      /foo/bar     controllers.FooBar.test()

...我有一个简单的测试来验证路由是否存在:

...i've got a simple test to verify that the route exists:

@Test
public void fooBarRouteExists() {
    running(fakeApplication(fakeGlobal()), new Runnable() {
        @Override
        public void run() {
            final Result result = route(fakeRequest(POST, "/foo/bar"));
            assertThat(result).isNotNull();
        }
    });
}

...运行时会产生以下异常:

...which when run, produces the following Exception:

 hsl [323]> play test
 [info] Loading project definition from /Users/hsl/Documents/workspace/test_project/project
 [info] Set current project to test_project (in build file:/Users/hsl/Documents/workspace/test_project/)
 [info] Compiling 1 Java source to /Users/hsl/Documents/workspace/test_project/target/scala-2.10/test-classes...
 SLF4J: Class path contains multiple SLF4J bindings.
 SLF4J: Found binding in [file:/Users/hsl/Documents/workspace/test_project/target/scala-2.10/classes/org/slf4j/impl/StaticLoggerBinder.class]
 SLF4J: Found binding in [jar:file:/usr/local/play-2.1.0/repository/local/ch.qos.logback/logback-classic/1.0.7/jars/logback-classic.> jar!/org/slf4j/impl/StaticLoggerBinder.class]
 SLF4J: Found binding in [jar:file:/usr/local/play-2.1.0/repository/cache/org.apache.activemq/activemq-all/jars/activemq-all-5.9.0.> jar!/org/slf4j/impl/StaticLoggerBinder.class]
 SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
 [error] Test controllers.FooBar.test failed: null
 [error]     at org.slf4j.LoggerFactory.bind(slf4j:LoggerFactory.java):128)
 [error]     at org.slf4j.LoggerFactory.performInitialization(slf4j:LoggerFactory.java):107)
 [error]     at org.slf4j.LoggerFactory.getILoggerFactory(slf4j:LoggerFactory.java):295)
 [error]     at org.slf4j.LoggerFactory.getLogger(slf4j:LoggerFactory.java):269)
 [error]     at play.api.Logger$.<init>(Logger.scala:179)
 [error]     at play.api.Logger$.<clinit>(Logger.scala)
 [error]     at play.api.Application$class.$init$(Application.scala:266)
 [error]     at play.api.test.FakeApplication.<init>(Fakes.scala:187)
 [error]     at play.test.FakeApplication.<init>(FakeApplication.java:28)
 [error]     at play.test.Helpers.fakeApplication(Helpers.java:97)
 [error]     at controllers.FooBar.test(FooBar.java:20)
 [error]     ...
 [error] Caused by: java.lang.UnsupportedOperationException: This code should have never made it into slf4j-api.jar
 [error]     at org.slf4j.impl.StaticLoggerBinder.<init>(impl:StaticLoggerBinder.java):63)
 [error]     at org.slf4j.impl.StaticLoggerBinder.<clinit>(impl:StaticLoggerBinder.java):44)
 [error]     ... 42 more
 [error] Failed: : Total 1, Failed 1, Errors 0, Passed 0, Skipped 0
 [error] Failed tests:
 [error]    controllers.FooBar
 java.lang.RuntimeException: Tests unsuccessful
    at scala.sys.package$.error(package.scala:27)
    at scala.Predef$.error(Predef.scala:123)
    at sbt.Tests$.showResults(Tests.scala:192)
    at sbt.Defaults$$anonfun$testTasks$6.apply(Defaults.scala:296)
    at sbt.Defaults$$anonfun$testTasks$6.apply(Defaults.scala:294)
    at sbt.Scoped$$anonfun$hf4$1.apply(Structure.scala:580)
    at sbt.Scoped$$anonfun$hf4$1.apply(Structure.scala:580)
    at scala.Function1$$anonfun$compose$1.apply(Function1.scala:49)
    at sbt.coped$Reduced$$anonfun$combine$1$$anonfun$apply$12.apply(Structure.scala:311)
    at sbt.Scoped$Reduced$$anonfun$combine$1$$anonfun$apply$12.apply(Structure.scala:311)
    at sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:41)
    at sbt.std.Transform$$anon$5.work(System.scala:71)
    at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:232)
    at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:232)
    at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:18)
    at sbt.Execute.work(Execute.scala:238)
    at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:232)
    at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:232)
    at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:160)
    at sbt.CompletionService$$anon$2.call(CompletionService.scala:30)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
    at java.lang.Thread.run(Thread.java:695)
 [error] (test:test) Tests unsuccessful> 

有人可以帮助我找出问题所在吗?

can someone help me figure out what the problem is?

推荐答案

关键错误消息位于顶部:

The key error message is at the top:

 SLF4J: Class path contains multiple SLF4J bindings.
 SLF4J: Found binding in [file:/Users/hsl/Documents/workspace/test_project/target/scala-2.10/classes/org/slf4j/impl/StaticLoggerBinder.class]
 SLF4J: Found binding in [jar:file:/usr/local/play-2.1.0/repository/local/ch.qos.logback/logback-classic/1.0.7/jars/logback-classic.> jar!/org/slf4j/impl/StaticLoggerBinder.class]
 SLF4J: Found binding in [jar:file:/usr/local/play-2.1.0/repository/cache/org.apache.activemq/activemq-all/jars/activemq-all-5.9.0.> jar!/org/slf4j/impl/StaticLoggerBinder.class]
 SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.

这很有趣，看起来您已经将sl4j的(某些)源代码放入了测试项目，以便Play对其进行编译.这会导致您遇到问题.

That's interesting, it looks like you have put (some of) the source code for sl4j in your test project, so that Play is compiling it. This causes the problem you are experiencing.

从测试项目中删除slf4j的源代码，它应该可以工作.

Remove the source code for slf4j from your test project, and it should work.

顺便说一句，您仍然可以访问该源以供参考-例如如果您使用的是Eclipse，则可以将相应的源代码附加到项目中的jar中.对于已正确将其源jar发布到其Maven或Ivy存储库的依赖项，play "eclipse with-sources"将自动执行此操作.

By the way, you can still have the source accessible for reference - e.g. if you are using Eclipse you can attach corresponding source to a jar in your project. play "eclipse with-sources" will do that automatically, for dependencies that have correctly published their source jars to their Maven or Ivy repository.

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