| // Copyright (c) 2009 Google, Inc. All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without modification, are permitted provided |
| // that the following conditions are met: |
| // * Redistributions of source code must retain the above copyright notice, this list of conditions and |
| // the following disclaimer. |
| // * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and |
| // the following disclaimer in the documentation and/or other materials provided with the distribution. |
| // * Neither the name of Microsoft nor the names of its contributors may be used to |
| // endorse or promote products derived from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR |
| // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE |
| // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| // ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| |
| ES5Harness.registerTest( { |
| id: "15.2.3.14-3-5", |
| |
| path: "TestCases/chapter15/15.2/15.2.3/15.2.3.14/15.2.3.14-3-5.js", |
| |
| description: "Object.keys must return a fresh array on each invocation", |
| |
| test: function testcase() { |
| var literal = {a: 1}; |
| var keysBefore = Object.keys(literal); |
| if (keysBefore[0] != 'a') return false; |
| keysBefore[0] = 'x'; |
| var keysAfter = Object.keys(literal); |
| return (keysBefore[0] == 'x') && (keysAfter[0] == 'a'); |
| }, |
| |
| precondition: function prereq() { |
| return fnExists(Object.keys); |
| } |
| }); |