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 }