test/tools/javac/lambda/MethodReference35.java

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1 /*
2 * Copyright (c) 2012, 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 * check that lambda/method references are valid method reference qualifiers
29 * @run main MethodReference35
30 */
31
32 public class MethodReference35 {
33
34 static int assertionCount = 0;
35
36 static void assertTrue(boolean cond) {
37 assertionCount++;
38 if (!cond)
39 throw new AssertionError();
40 }
41
42 interface SAM {
43 MethodReference35 invoke();
44 }
45
46 MethodReference35() {
47 assertTrue(true);
48 }
49
50 static MethodReference35 m() {
51 assertTrue(true);
52 return null;
53 }
54
55 public static void main(String[] args) {
56 SAM sam1 = ((SAM)() -> { assertTrue(true); return null; })::invoke;
57 sam1.invoke();
58 SAM sam2 = ((SAM)MethodReference35::new)::invoke;
59 sam1.invoke();
60 SAM sam3 = ((SAM)MethodReference35::m)::invoke;
61 sam1.invoke();
62 assertTrue(assertionCount == 3);
63 }
64 }

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