大名鼎鼎的java动态脚本语言。已经通过了sun的认证

				package groovy.mock.example								import groovy.mock.interceptor.MockFor								class SandwichMakerTest extends GroovyTestCase {								    void testStuff(){								        def mocker = new MockFor(CheeseSlicer.class)								        mocker.demand.slice { name -> assert name.startsWith("ch") }								        def sandwichMaker = new SandwichMaker()								        mocker.use(sandwichMaker.cheeseSlicer) { // todo: should also work without giving the object!				            sandwichMaker.makeFattySandwich()				        }								    }								}