diff -r 000000000000 -r 959103a6100f test/tools/javac/lambda/methodReference/MethodRef7.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/tools/javac/lambda/methodReference/MethodRef7.java Wed Apr 27 01:34:52 2016 +0800 @@ -0,0 +1,105 @@ +/* + * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +/** + * @test + * @bug 8003280 + * @summary Add lambda tests + * Test that parameter types are inferred from SAM descriptor when method parameters are elided, + with different types of method references + * @compile MethodRef7.java + * @run main MethodRef7 + */ + +public class MethodRef7 { + + static interface A {void m();} + + static interface A2 {void m(int n);} + + static interface B {String m();} + + static interface B2 {String m(int n);} + + static interface C {String m(MethodRef7 mr);} + + static interface C2 {String m(MethodRef7 mr, int n);} + + static interface D {Fee m();} + + static interface D2 {Fee m(String s);} + + static class Fee { + + public Fee() { + System.out.println("Fee instantiated"); + } + + public Fee(String s) { + System.out.println("Fee instantiated: " + s); + } + } + + private static void assertTrue(boolean cond) { + if (!cond) + throw new AssertionError(); + } + + static void bar() { + System.out.println("MethodRef_neg1.bar()"); + } + + static void bar(int x) { + System.out.println("MethodRef_neg1.bar(int) " + x); + } + + String wahoo() { + return "wahoo"; + } + + String wahoo(int x) { + return "wahoo " + x; + } + + public static void main(String[] args) { + + A a = MethodRef7::bar; //static reference to bar() + a.m(); + A2 a2 = MethodRef7::bar; //static reference to bar(int x) + a2.m(10); + + MethodRef7 mr = new MethodRef7(); + B b = mr::wahoo; //instance reference to wahoo() + assertTrue(b.m().equals("wahoo")); + B2 b2 = mr::wahoo; //instance reference to wahoo(int x) + assertTrue(b2.m(1).equals("wahoo 1")); + + C c = MethodRef7::wahoo; //unbound reference to wahoo() + assertTrue(c.m(mr).equals("wahoo")); + C2 c2 = MethodRef7::wahoo; //unbound reference to wahoo(int x) + assertTrue(c2.m(mr, 2).equals("wahoo 2")); + + D d = Fee::new; //constructor reference to Fee() + D2 d2 = Fee::new; //constructor reference to Fee(String s) + } +}