test/script/basic/JDK-8068901.js

/*
 * Copyright (c) 2015, 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.
 * 
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 */

/**
 * JDK-8068901: Surprising behavior with more than one functional interface on a class
 *
 * @test
 * @run
 */

var Consumer = java.util.function.Consumer;
var JFunction = java.util.function.Function;

var fc = new (Java.extend(JFunction, Consumer))({
    apply: function(x) { print("fc invoked as a function") },
    accept: function(x) { print("fc invoked as a consumer") }
});

var c = new Consumer(function(x) { print("c invoked as a consumer") });

var cf = new (Java.extend(Consumer, JFunction))({
    apply: function(x) { print("cf invoked as a function") },
    accept: function(x) { print("cf invoked as a consumer") }
});

var f = new JFunction(function(x) { print("f invoked as a function") });

for each(x in [fc, c, fc, cf, f, cf, c, fc, f, cf]) { x(null); }