private static void assertURLsMatch(List<String> expected, URL[] actual) {
    assertURLsMatch("", expected, actual);
  }
Minimal tests for AddToClassPathAction class. Most of the tests don't use
{@link java.security.AccessController#doPrivileged(java.security.PrivilegedAction)},
presumably the tests will not be executed under security manager.
ql/src/test/org/apache/hadoop/hive/ql/exec/TestAddToClassPathAction.java