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52 lines
2.5 KiB
JavaScript
52 lines
2.5 KiB
JavaScript
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// Copyright 2009 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Regexp shouldn't use String.prototype.slice()
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var s = new String("foo");
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assertEquals("f", s.slice(0,1));
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String.prototype.slice = function() { return "x"; }
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assertEquals("x", s.slice(0,1));
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assertEquals("g", /g/.exec("gg"));
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// Regexp shouldn't use String.prototype.charAt()
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var f1 = new RegExp("f", "i");
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assertEquals("F", f1.exec("F"));
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assertEquals("f", "foo".charAt(0));
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String.prototype.charAt = function(idx) { return 'g'; };
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assertEquals("g", "foo".charAt(0));
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var f2 = new RegExp("[g]", "i");
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assertEquals("G", f2.exec("G"));
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assertTrue(f2.ignoreCase);
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// On the other hand test is defined in a semi-coherent way as a call to exec.
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// 15.10.6.3
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// We match other browsers in using the original value of RegExp.prototype.exec.
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// I.e., RegExp.prototype.test shouldn't use the current value of
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// RegExp.prototype.exec.
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RegExp.prototype.exec = function(string) { return 'x'; }
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assertFalse(/f/.test('x'));
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