Java ZK Zats不工作（仿真异常）

我正在做一个ZK应用程序，它使用Hibernate访问数据库。我尝试执行以下JUnit测试，但在JUnit视图中出现以下错误：

org.zkoss.zats.mimic.impl.emulator.EmulatorException: 
at org.zkoss.zats.mimic.impl.emulator.JettyEmulator.<init>(JettyEmulator.java:143)
at org.zkoss.zats.mimic.impl.emulator.EmulatorBuilder.create(EmulatorBuilder.java:130)
at org.zkoss.zats.mimic.DefaultZatsEnvironment.init(DefaultZatsEnvironment.java:86)
at org.zkoss.zats.mimic.Zats.init(Zats.java:46)
at br.ufjf.tcc.controller.LoginControllerTest.init(LoginControllerTest.java:22)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

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顺便问一下，有更好的工具来测试ZK应用程序吗？

我在一个Eclipse WTP项目中遇到了同样的问题，该项目使用Tomcat6作为服务器运行时。在我看来，ZATS提供的Jetty服务器与Tomcat冲突

在类路径中不使用Tomcat LIB的情况下执行测试，一切正常

Caused by: 
java.lang.ClassNotFoundException: org.apache.juli.logging.LogFactory