nullobjecttest.groovy

大名鼎鼎的java动态脚本语言。已经通过了sun的认证

package org.codehaus.groovy.runtime

class NullObjectTest extends GroovyTestCase {
    void testCallingMethod() {
        def foo = null
        try {
          println foo.bar
        } catch (NullPointerException ex) {
          // is successfull
        }
    }

    void testEquals() {
        def a = [1]
        assert a[3] == a[4]
        assert a[2].equals(a[4])
    }
}