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 *  test for capture of non-mutable locals/outer fields in multiple scopes
29 * @author  Maurizio Cimadamore
30 * @run main LambdaCapture03
31 */
32
33public class LambdaCapture03 {
34
35    static int assertionCount = 0;
36
37    static void assertTrue(boolean cond) {
38        assertionCount++;
39        if (!cond)
40            throw new AssertionError();
41    }
42
43    interface Tester {
44        void test();
45    }
46
47    interface TU<T, U> {
48        public T foo(U u);
49    }
50
51    public static <T, U> T exec(TU<T, U> lambda, U x) {
52        return lambda.foo(x);
53    }
54
55    Integer n1 = 10;
56
57    void test1() {
58        final Integer N1 = 1;
59        class A {
60            Integer n2 = 20;
61            void test() {
62                  final Integer N2 = 2;
63                  class B {
64                       void test() {
65                           final Integer N3 = 3;
66                           int res = LambdaCapture03.exec((Integer x) -> x + n1 + n2 + N1 + N2 + N3, 30);
67                           assertTrue(res == 66);
68                       }
69                  }
70                  new B().test();
71            }
72        }
73        new A().test();
74    }
75
76    void test2() {
77        final Integer N1 = 1;
78        new Tester() {
79            Integer n2 = 20;
80            public void test() {
81                final Integer N2 = 2;
82                new Tester() {
83                    public void test() {
84                        final Integer N3 = 3;
85                        int res = LambdaCapture03.exec((Integer x) -> x + n1 + n2 + N1 + N2 + N3, 30);
86                        assertTrue(res == 66);
87                    }
88                }.test();
89            }
90        }.test();
91    }
92
93    public static void main(String[] args) {
94        LambdaCapture03 t = new LambdaCapture03();
95        t.test1();
96        t.test2();
97        assertTrue(assertionCount == 2);
98    }
99}
100