GWT单元测试 gwt.junit.JUnitFatalLaunchException

如果org.mortbay冲突问题已经解决，而又遇到gwt.junit.JUnitFatalLaunchException（错误例子如下）

<span style="font-family: SimSun; font-size: 16px;" mce_style="font-family: SimSun; font-size: 16px;">com.google.gwt.junit.JUnitFatalLaunchException: The test class 'com.google.gwt.sample.stockwatcher.clients.StockWatcherTest' was not found in module 'com.google.gwt.sample.stockwatcher.StockWatcher'; no compilation unit for that type was seen at com.google.gwt.junit.JUnitShell.checkTestClassInCurrentModule(JUnitShell.java:743) at com.google.gwt.junit.JUnitShell.runTestImpl(JUnitShell.java:1346) at com.google.gwt.junit.JUnitShell.runTestImpl(JUnitShell.java:1309) at com.google.gwt.junit.JUnitShell.runTest(JUnitShell.java:650) at com.google.gwt.junit.client.GWTTestCase.runTest(GWTTestCase.java:441) at junit.framework.TestCase.runBare(TestCase.java:134) at junit.framework.TestResult$1.protect(TestResult.java:110) at junit.framework.TestResult.runProtected(TestResult.java:128) at junit.framework.TestResult.run(TestResult.java:113) at junit.framework.TestCase.run(TestCase.java:124) at com.google.gwt.junit.client.GWTTestCase.run(GWTTestCase.java:296) at junit.framework.TestSuite.runTest(TestSuite.java:243) at junit.framework.TestSuite.run(TestSuite.java:238) at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83) 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)</span>错误原因：找不到测试类和被测试类的关联（笔者这边的情况是被测试类在src/com.google.gwt.sample.stockwatcher.client下，而测试类写在了test/com.google.gwt.sample.stockwatcher.clients下）

检查以及解决方法：

1、把测试类拷贝到被测试类的同一个目录下，简单粗暴，但把测试代码写到src底下，非常丑陋。

2、检查测试类和被测试类所在包名称是否匹配（文件夹不需匹配，被测试类都在src下，测试类都在test下）

3、如果2检查过但仍出现这个错误，Java Build Path -> Source里面没有配置src和test目录

这个错误搞定后测试就成功了（GWT单元测试速度真的不敢恭维）

<span style="font-family: SimSun; font-size: 16px;" mce_style="font-family: SimSun; font-size: 16px;">Starting http://192.168.0.100:59172/com.google.gwt.sample.stockwatcher.StockWatcher.JUnit/junit.html?gwt.codesvr=192.168.0.100:59170 on browser FF3200 - GET /com.google.gwt.sample.stockwatcher.StockWatcher.JUnit/junit.html?gwt.codesvr=192.168.0.100:59170 (192.168.0.100) 2380 bytes200 - GET /com.google.gwt.sample.stockwatcher.StockWatcher.JUnit/com.google.gwt.sample.stockwatcher.StockWatcher.JUnit.nocache.js (192.168.0.100) 6341 byteslogging for HtmlUnit thread [WARN] Expected content type of 'application/javascript' or 'application/ecmascript' for remotely loaded JavaScript element at 'http://192.168.0.100:59172/com.google.gwt.sample.stockwatcher.StockWatcher.JUnit/com.google.gwt.sample.stockwatcher.StockWatcher.JUnit.nocache.js', but got 'application/x-javascript'.200 - GET /com.google.gwt.sample.stockwatcher.StockWatcher.JUnit/hosted.html?com_google_gwt_sample_stockwatcher_StockWatcher_JUnit (192.168.0.100) 11478 bytes200 - GET /com.google.gwt.sample.stockwatcher.StockWatcher.JUnit/gwt/clean/clean.css (192.168.0.100) 29306 bytes200 - GET /com.google.gwt.sample.stockwatcher.StockWatcher.JUnit/gwt/standard/standard.css (192.168.0.100) 26953 bytesModule com.google.gwt.sample.stockwatcher.StockWatcher.JUnit has been loaded200 - POST /com.google.gwt.sample.stockwatcher.StockWatcher.JUnit/junithost (192.168.0.100) 425 bytesAll clients connected (Limiting future permutations to: gecko1_8)</span>