JUnit4：@Test注解的expected和timeout属性

JUnit4：Test文档中的解释：

　　TheTest annotation supports two optional parameters.

　　The first,expected, declares that a test method should throw an exception.

　　If it doesn't throw an exception or if it throws a different exception than the one declared, the test fails.

　　For example, the following testsucceeds:

@Test(expected=IndexOutOfBoundsException.class) 
public void outOfBounds() 
{
    new ArrayList<Object>().get(1);
}

　　The second optional parameter,timeout, causes a test to fail if it takes longer than a specified amount of clock time (measured in milliseconds).

　　The following testfails:

@Test(timeout=100) 
public void infinity() 
{
    while(true);
}

参考：JUnit4：Test注解的两个属性：expected和timeout