Junit和Java类路径问题 - OS X.

Question

我正在尝试运行junit4.7附带的样本测试并遇到一些困难.

java是尊重我的CLASSPATH:

me@dinosaurhunter ~/Desktop> export CLASSPATH=
me@dinosaurhunter ~/Desktop> echo $CLASSPATH

me@dinosaurhunter ~/Desktop> java junit.textui.TestRunner junit.samples.AllTests
Exception in thread "main" java.lang.NoClassDefFoundError: junit/textui/TestRunner
me@dinosaurhunter ~/Desktop> source /etc/profile 
me@dinosaurhunter ~/Desktop> echo $CLASSPATH
:/Library/Java/Extensions/junit/:/Library/Java/Extensions/junit/junit.jar
me@dinosaurhunter ~/Desktop> java junit.textui.TestRunner junit.samples.AllTests
Exception in thread "main" java.lang.NoClassDefFoundError: junit/framework/Test
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:164)
    at junit.runner.BaseTestRunner.loadSuiteClass(BaseTestRunner.java:207)
    at junit.runner.BaseTestRunner.getTest(BaseTestRunner.java:100)
    at junit.textui.TestRunner.start(TestRunner.java:179)
    at junit.textui.TestRunner.main(TestRunner.java:138)

但正如你所看到的,它无法找到junit/framework/Test......我看着/Library/Java/Extensions/junit/junit.jar它,但它包括在内.

/Library/Java/Extensions/junit/junit.jar是一个符号链接.这样可以吗？

Answer 1

好的,我刚刚下载了JUnit 4.7,解压缩了zip文件,将目录更改为该文件夹并成功运行以下命令:

$ java -cp .:junit-4.7.jar junit.textui.TestRunner junit.samples.AllTests 
.........................................
.........................................
.........................................
.......
Time: 3.255

OK (130 tests)

那是在OSX上.

我想在你的例子中,你的类路径有点搞砸了.试试这个:

.:/Library/Java/Extensions/junit:/Library/Java/Extensions/junit/junit.jar

看到差异？我添加了.(当前目录),我从junit目录中删除了尾部斜杠.

更新:我刚用符号链接进行测试,看起来也有效:

$ ln -s junit-4.7.jar junit.jar
$ java -cp .:junit.jar junit.textui.TestRunner junit.samples.AllTests 
.........................................
.........................................
.........................................
.......
Time: 2.569

OK (130 tests)

Answer 2

尝试将junit JAR文件直接放入Extensions目录,而不是为其创建子目录.我刚刚将junit-4.6.jar复制到/ Library/Java/Extenstions目录并执行了TestRunner类,没有任何问题

% java junit.textui.TestRunner
Usage: TestRunner [-wait] testCaseName, where name is the name of the TestCase class

从Extensions目录中删除库会导致预期的异常

Exception in thread "main" java.lang.NoClassDefFoundError: junit/textui/TestRunner