nashorn/test/script/basic/javaclassoverrides.js
author hannesw
Wed, 25 Jun 2014 14:36:24 +0200
changeset 25243 7a1edca6ce94
parent 24778 2ff5d7041566
permissions -rw-r--r--
8048079: Persistent code store is broken after optimistic types merge Reviewed-by: sundar, jlaskey, attila
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/*
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 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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/**
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 * Check behavior of class-level overrides.
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 *
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 * @test
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 * @run
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 */
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// Make two classes with class overrides
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var R1 = Java.extend(java.lang.Runnable, {
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    run: function() {
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        print("R1.run() invoked")
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    }
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})
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var R2 = Java.extend(java.lang.Runnable, {
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    run: function() {
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        print("R2.run() invoked")
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    }
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})
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var r1 = new R1
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var r2 = new R2
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// Create one with an instance-override too
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var R3 = Java.extend(R2)
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var r3 = new R3({ run: function() { print("r3.run() invoked") }})
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// Run 'em - we're passing them through a Thread to make sure they indeed
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// are full-blown Runnables
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function runInThread(r) {
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    var t = new java.lang.Thread(r)
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    t.start()
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    t.join()
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}
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runInThread(r1)
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runInThread(r2)
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runInThread(r3)
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// Two class-override classes differ
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print("r1.class !== r2.class: " + (r1.class !== r2.class))
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// instance-override class also differs
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print("r2.class !== r3.class: " + (r2.class !== r3.class))
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function checkAbstract(r) {
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    try {
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        r.run()
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        print("Expected to fail!")
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    } catch(e) {
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        print("Got exception: " + e)
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    }
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}
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// Check we're hitting UnsupportedOperationException if neither class
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// overrides nor instance overrides are present
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var RAbstract = Java.extend(java.lang.Runnable, {})
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checkAbstract(new RAbstract()) // class override (empty)
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checkAbstract(new (Java.extend(RAbstract))() {}) // class+instance override (empty)
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// Check we delegate to superclass if neither class
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// overrides nor instance overrides are present
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var ExtendsList = Java.extend(java.util.ArrayList, {})
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print("(new ExtendsList).size() = " + (new ExtendsList).size())
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print("(new (Java.extend(ExtendsList)){}).size() = " + (new (Java.extend(ExtendsList)){}).size())