大名鼎鼎的java动态脚本语言。已经通过了sun的认证

				class MapTest extends GroovyTestCase {								    void testMap() {								        def m = [1:'one', '2':'two', 3:'three']								        assert m.size() == 3				        assert m.get(1) == 'one'				        assert m.get('2') == 'two'				        assert m.get(3) == 'three'				        				        assert m.containsKey(1)				        assert m.containsKey('2')				        assert m.containsKey(3)								        assert m.containsValue('one')				        assert m.containsValue('two')				        assert m.containsValue('three')								        assert m.keySet().size() == 3				        assert m.values().size() == 3				        assert m.keySet().contains(1)				        assert m.values().contains('one')								        m.remove(1)				        m.remove('2')								        assert m.size() == 1				        assert m.get('1') == null				        assert m.get('2') == null				        				        m.put('cheese', 'cheddar')								        assert m.size() == 2								        assert m.containsKey("cheese")				        assert m.containsValue("cheddar")												        if ( m.containsKey("cheese") ) {				            // ignore				        }				        else {				            assert false , "should contain cheese!"				        }								        if ( m.containsKey(3) ) {				            // ignore				        }				        else {				            assert false , "should contain 3!"				        }				    }				    				    void testEmptyMap() {				        def m = [:]								        assert m.size() == 0				        assert !m.containsKey("cheese")								        m.put("cheese", "cheddar")								        assert m.size() == 1				        assert m.containsKey("cheese")				    }				    				    void testMapMutation() {    				        def m = [ 'abc' : 'def', 'def' : 134, 'xyz' : 'zzz' ]								        assert m['unknown'] == null								        assert m['def'] == 134								        println(m['xyz'])				        				        m['def'] = 'cafebabe'								        assert m['def'] == 'cafebabe'								        assert m.size() == 3								        m.remove('def')								        assert m['def'] == null				        assert m.size() == 2				    }								    void testFindAll(){				        assert [a:1] == ['a':1, 'b':2].findAll {it.value == 1}				        assert [a:1] == ['a':1, 'b':2].findAll {it.key == 'a'}				        assert [a:1] == ['a':1, 'b':2].findAll {key,value -> key == 'a'}				        assert [a:1] == ['a':1].findAll {true}				        assert [:]   == ['a':1].findAll {false}				    }				}