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