1/* 2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* 25 * @test 26 * @bug 8003280 27 * @summary Add lambda tests 28 * basic test for capture of non-mutable locals 29 * @author Brian Goetz 30 * @author Maurizio Cimadamore 31 * @run main LambdaScope01 32 */ 33 34public class LambdaScope01 { 35 36 static int assertionCount = 0; 37 38 static void assertTrue(boolean cond) { 39 assertionCount++; 40 if (!cond) 41 throw new AssertionError(); 42 } 43 44 interface TU<T, U> { 45 public T foo(U u); 46 } 47 48 public static <T, U> T exec(TU<T, U> lambda, U x) { 49 return lambda.foo(x); 50 } 51 52 public int n = 5; 53 54 public int hashCode() { 55 throw new RuntimeException(); 56 } 57 58 public void test1() { 59 try { 60 int res = LambdaScope01.<Integer,Integer>exec((Integer x) -> x * hashCode(), 3); 61 } 62 catch (RuntimeException e) { 63 assertTrue(true); //should throw 64 } 65 } 66 67 public void test2() { 68 final int n = 10; 69 int res = LambdaScope01.<Integer,Integer>exec((Integer x) -> x + n, 3); 70 assertTrue(13 == res); 71 } 72 73 public static void main(String[] args) { 74 LambdaScope01 t = new LambdaScope01(); 75 t.test1(); 76 t.test2(); 77 assertTrue(assertionCount == 2); 78 } 79} 80