test/tools/javac/lambda/methodReference/MethodRef6.java

Tue, 12 Mar 2013 16:02:43 +0000

author
mcimadamore
date
Tue, 12 Mar 2013 16:02:43 +0000
changeset 1628
5ddecb91d843
parent 0
959103a6100f
permissions
-rw-r--r--

8009545: Graph inference: dependencies between inference variables should be set during incorporation
Summary: Move all transitivity checks into the incorporation round
Reviewed-by: jjg

     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  */
    24 /**
    25  * @test
    26  * @bug 8003280
    27  * @summary Add lambda tests
    28  *   Test that the most specific reference is selected when method parameters are elided
    29  * @compile MethodRef6.java
    30  * @run main MethodRef6
    31  */
    33 public class MethodRef6 {
    35     static interface A { String make(Integer i); }
    37     static interface B { String make(Number i); }
    39     private static void assertTrue(boolean cond) {
    40         if (!cond)
    41             throw new AssertionError();
    42     }
    44     static String m(Object o) {
    45         return "Object " + o;
    46     }
    48     static String m(Number n) {
    49         return "Number " + n;
    50     }
    52     static String m(Integer i) {
    53         return "Integer " + i;
    54     }
    56     static String m(int i) {
    57         return "int " + i;
    58     }
    60     public static void main(String[] args) {
    61         A a = MethodRef6::m;
    62         assertTrue(a.make(1).equals("Integer 1"));//method parameter type inferred from SAM descriptor, boxing applied
    63         B b = MethodRef6::m;
    64         assertTrue(b.make(1).equals("Number 1"));//method parameter type inferred from SAM descriptor, boxing and widen applied
    65     }
    66 }

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