1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/tools/javac/lambda/methodReference/MethodRef7.java Sat Nov 17 19:01:03 2012 +0000
1.3 @@ -0,0 +1,105 @@
1.4 +/*
1.5 + * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + */
1.26 +
1.27 +/**
1.28 + * @test
1.29 + * @bug 8003280
1.30 + * @summary Add lambda tests
1.31 + * Test that parameter types are inferred from SAM descriptor when method parameters are elided,
1.32 + with different types of method references
1.33 + * @compile MethodRef7.java
1.34 + * @run main MethodRef7
1.35 + */
1.36 +
1.37 +public class MethodRef7 {
1.38 +
1.39 + static interface A {void m();}
1.40 +
1.41 + static interface A2 {void m(int n);}
1.42 +
1.43 + static interface B {String m();}
1.44 +
1.45 + static interface B2 {String m(int n);}
1.46 +
1.47 + static interface C {String m(MethodRef7 mr);}
1.48 +
1.49 + static interface C2 {String m(MethodRef7 mr, int n);}
1.50 +
1.51 + static interface D {Fee<String> m();}
1.52 +
1.53 + static interface D2 {Fee<String> m(String s);}
1.54 +
1.55 + static class Fee<T> {
1.56 +
1.57 + public Fee() {
1.58 + System.out.println("Fee<T> instantiated");
1.59 + }
1.60 +
1.61 + public Fee(String s) {
1.62 + System.out.println("Fee<T> instantiated: " + s);
1.63 + }
1.64 + }
1.65 +
1.66 + private static void assertTrue(boolean cond) {
1.67 + if (!cond)
1.68 + throw new AssertionError();
1.69 + }
1.70 +
1.71 + static void bar() {
1.72 + System.out.println("MethodRef_neg1.bar()");
1.73 + }
1.74 +
1.75 + static void bar(int x) {
1.76 + System.out.println("MethodRef_neg1.bar(int) " + x);
1.77 + }
1.78 +
1.79 + String wahoo() {
1.80 + return "wahoo";
1.81 + }
1.82 +
1.83 + String wahoo(int x) {
1.84 + return "wahoo " + x;
1.85 + }
1.86 +
1.87 + public static void main(String[] args) {
1.88 +
1.89 + A a = MethodRef7::bar; //static reference to bar()
1.90 + a.m();
1.91 + A2 a2 = MethodRef7::bar; //static reference to bar(int x)
1.92 + a2.m(10);
1.93 +
1.94 + MethodRef7 mr = new MethodRef7();
1.95 + B b = mr::wahoo; //instance reference to wahoo()
1.96 + assertTrue(b.m().equals("wahoo"));
1.97 + B2 b2 = mr::wahoo; //instance reference to wahoo(int x)
1.98 + assertTrue(b2.m(1).equals("wahoo 1"));
1.99 +
1.100 + C c = MethodRef7::wahoo; //unbound reference to wahoo()
1.101 + assertTrue(c.m(mr).equals("wahoo"));
1.102 + C2 c2 = MethodRef7::wahoo; //unbound reference to wahoo(int x)
1.103 + assertTrue(c2.m(mr, 2).equals("wahoo 2"));
1.104 +
1.105 + D d = Fee<String>::new; //constructor reference to Fee()
1.106 + D2 d2 = Fee<String>::new; //constructor reference to Fee(String s)
1.107 + }
1.108 +}
