test/tools/javac/lambda/MethodReference42.java

changeset 1415
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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 diamond inference is applied when using raw constructor reference qualifier
29 * @run main MethodReference42
30 */
31 public class MethodReference42 {
32
33 static int assertionCount = 0;
34
35 static void assertTrue(boolean cond) {
36 assertionCount++;
37 if (!cond)
38 throw new AssertionError();
39 }
40
41 static class SuperFoo<X> { }
42
43 static class Foo<X extends Number> extends SuperFoo<X> { }
44
45 interface SAM1 {
46 SuperFoo<String> m();
47 }
48
49 interface SAM2 {
50 SuperFoo<Integer> m();
51 }
52
53 interface SAM3 {
54 SuperFoo<Object> m();
55 }
56
57 static void m(SAM1 s) { assertTrue(false); }
58 static void m(SAM2 s) { assertTrue(true); }
59 static void m(SAM3 s) { assertTrue(false); }
60
61 public static void main(String[] args) {
62 m(Foo::new);
63 assertTrue(assertionCount == 1);
64 }
65 }

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