1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/script/basic/typecoerce.js Wed Jan 30 12:26:45 2013 +0100
1.3 @@ -0,0 +1,53 @@
1.4 +/*
1.5 + * Copyright (c) 2010, 2013, 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 + * There was a bug in the old Lower that didn't fully propagate type information
1.29 + * by way of assignment. 'q' in the example below would have finished a double
1.30 + * even though it can get an object value through the assignment 'q = l'
1.31 + *
1.32 + * Furthermore, this caused type coercion to be done at q = l, and not a q = q * 2,
1.33 + * which is a bug. This test ensures it happens in the correct order
1.34 + *
1.35 + * @test
1.36 + * @run
1.37 + */
1.38 +
1.39 +function createObject() {
1.40 + var obj = { valueOf: function() { print("toNumber coercion"); return 17; }}
1.41 + return obj;
1.42 +}
1.43 +
1.44 +function f() {
1.45 + var l = 1.2; //number
1.46 + var q = 2.3; //number
1.47 + for (var i = 0; i < 2; i++) {
1.48 + q = l; // q = toNumber(l), no coercion here
1.49 + print("assignment done");
1.50 + q = q * 2; // q = q * 2, coercion here
1.51 + print("multiplication done");
1.52 + l = createObject();
1.53 + }
1.54 +}
1.55 +
1.56 +f();
