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  */

    23 

    24 /**

    25  * @test

    26  * @bug 8003280

    27  * @summary Add lambda tests

    28  *  This test is for overloaded methods, verify that the specific method is

    29              selected when type inference occurs

    30  * @compile InferenceTest5.java

    31  * @run main InferenceTest5

    32  */

    33 

    34 import java.util.List;

    35 import java.io.File;

    36 

    37 public class InferenceTest5 {

    38 

    39     private static void assertTrue(boolean b) {

    40         if(!b)

    41             throw new AssertionError();

    42     }

    43 

    44     public static void main(String[] args) {

    45         InferenceTest5 test = new InferenceTest5();

    46         int n = test.method1((a, b) -> {} );

    47         assertTrue(n == 1);

    48 

    49         n = test.method1(() -> null);

    50         assertTrue(n == 2);

    51 

    52         n = test.method1(a -> null);

    53         assertTrue(n == 3);

    54 

    55         n = test.method1(a -> {});

    56         assertTrue(n == 4);

    57 

    58         n = test.method1(() -> {});

    59         assertTrue(n == 5);

    60 

    61         n = test.method1((a, b) -> 0);

    62         assertTrue(n == 6);

    63 

    64         n = test.method1((a, b) -> null);

    65         assertTrue(n == 6);

    66 

    67         n = test.method1((a, b) -> null, (a, b) -> null);

    68         assertTrue(n == 7);

    69     }

    70 

    71     int method1(SAM1<String> s) {

    72         return 1;

    73     }

    74 

    75     int method1(SAM2 s) {

    76         return 2;

    77     }

    78 

    79     int method1(SAM3 s) {

    80         return 3;

    81     }

    82 

    83     int method1(SAM4 s) {

    84         return 4;

    85     }

    86 

    87     int method1(SAM5 s) {

    88         return 5;

    89     }

    90 

    91     int method1(SAM6<?, ? super Integer> s) {

    92         return 6;

    93     }

    94 

    95     int method1(SAM6<?, ?>... s) {

    96         return 7;

    97     }

    98 

    99     static interface SAM1<T> {

   100         void foo(List<T> a, List<T> b);

   101     }

   102 

   103     static interface SAM2 {

   104         List<String> foo();

   105     }

   106 

   107     static interface SAM3 {

   108         String foo(int a);

   109     }

   110 

   111     static interface SAM4 {

   112         void foo(List<File> a);

   113     }

   114 

   115     static interface SAM5 {

   116         void foo();

   117     }

   118 

   119     static interface SAM6<T, V> {

   120         V get(T t, T t2);

   121     }

   122 }