test/tools/javac/lambda/MostSpecific05.java

changeset 1415
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1414:843d3b191773 1415:01c9d4161882
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 * Structural most specific doesn't handle cases with wildcards in functional interfaces
29 */
30 public class MostSpecific05 {
31
32 static int assertionCount = 0;
33
34 static void assertTrue(boolean cond) {
35 assertionCount++;
36 if (!cond)
37 throw new AssertionError();
38 }
39
40 interface ObjectConverter<T extends Object> {
41 T map(Object o);
42 }
43
44 interface NumberConverter<T extends Number> {
45 T map(Object o);
46 }
47
48 static class MyMapper<A extends Object, B extends Number> {
49 void map(ObjectConverter<? extends A> m) { assertTrue(false); }
50 void map(NumberConverter<? extends B> m) { assertTrue(true); }
51 }
52
53 public static void main(String[] args) {
54 MyMapper<Number, Double> mm = new MyMapper<Number, Double>();
55 mm.map(e->1.0);
56 assertTrue(assertionCount == 1);
57 }
58 }

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