大名鼎鼎的java动态脚本语言。已经通过了sun的认证

				/**				 * todo: add BreakContinueLabelWithClosureTest (when break is used to return from a Closure)								 * @author Dierk Koenig				 */				class BreakContinueLabelTest extends GroovyTestCase {								    void testDeclareSimpleLabel() {				        label_1: assert true				        label_2:				        assert true				    }				    void testBreakLabelInSimpleForLoop() {				        label_1: for (i in [1]) {				            break label_1				            assert false				        }				    }								    void testBreakLabelInNestedForLoop() {				        label: for (i in [1]) {				            for (j in [1]){				                break label				                assert false, 'did not break inner loop'				            }				            assert false, 'did not break outer loop'				        }				    }								    void testUnlabelledBreakInNestedForLoop() {				        def reached = false				        for (i in [1]) {				            for (j in [1]){				                break				                assert false, 'did not break inner loop'				            }				            reached = true				        }				        assert reached, 'must not break outer loop'				    }								    void testBreakLabelInSimpleWhileLoop() {				        label_1: while (true) {				            break label_1				            assert false				        }				    }								    void testBreakLabelInNestedWhileLoop() {				        def count = 0				        label: while (count < 1) {				            count++				            while (true){				                break label				                assert false, 'did not break inner loop'				            }				            assert false, 'did not break outer loop'				        }				    }								    void testBreakLabelInNestedMixedForAndWhileLoop() {				        def count = 0				        label_1: while (count < 1) {				            count++				            for (i in [1]){				                break label_1				                assert false, 'did not break inner loop'				            }				            assert false, 'did not break outer loop'				        }				        label_2: for (i in [1]) {				            while (true){				                break label_2				                assert false, 'did not break inner loop'				            }				            assert false, 'did not break outer loop'				        }				    }								    void testUnlabelledContinueInNestedForLoop() {				        def log = ''				        for (i in [1,2]) {				            log += i				            for (j in [3,4]){				                if (j==3) continue				                log += j				            }				        }				        assertEquals '1424',log				    }								    void testContinueLabelInNestedForLoop() {				        def log = ''				        label: for (i in [1,2]) {				            log += i				            for (j in [3,4]){				                if (j==4) continue label				                log += j				            }				            log += 'never reached'				        }				        assertEquals '1323',log				    }				}