JezK
Edit File: string-trim.js
// Copyright (c) 2009 Apple Computer, 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: // // 1. Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // // 2. 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. // // 3. Neither the name of the copyright holder(s) nor the names of any // 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. // Based on LayoutTests/fast/js/script-tests/string-trim.js // References to trim(), trimLeft() and trimRight() functions for // testing Function's *.call() and *.apply() methods. var trim = String.prototype.trim; var trimLeft = String.prototype.trimLeft; var trimRight = String.prototype.trimRight; var testString = 'foo bar'; var trimString = ''; var leftTrimString = ''; var rightTrimString = ''; var wsString = ''; var whitespace = [ {s : '\u0009', t : 'HORIZONTAL TAB'}, {s : '\u000A', t : 'LINE FEED OR NEW LINE'}, {s : '\u000B', t : 'VERTICAL TAB'}, {s : '\u000C', t : 'FORMFEED'}, {s : '\u000D', t : 'CARRIAGE RETURN'}, {s : '\u0020', t : 'SPACE'}, {s : '\u00A0', t : 'NO-BREAK SPACE'}, {s : '\u2000', t : 'EN QUAD'}, {s : '\u2001', t : 'EM QUAD'}, {s : '\u2002', t : 'EN SPACE'}, {s : '\u2003', t : 'EM SPACE'}, {s : '\u2004', t : 'THREE-PER-EM SPACE'}, {s : '\u2005', t : 'FOUR-PER-EM SPACE'}, {s : '\u2006', t : 'SIX-PER-EM SPACE'}, {s : '\u2007', t : 'FIGURE SPACE'}, {s : '\u2008', t : 'PUNCTUATION SPACE'}, {s : '\u2009', t : 'THIN SPACE'}, {s : '\u200A', t : 'HAIR SPACE'}, {s : '\u3000', t : 'IDEOGRAPHIC SPACE'}, {s : '\u2028', t : 'LINE SEPARATOR'}, {s : '\u2029', t : 'PARAGRAPH SEPARATOR'}, {s : '\u200B', t : 'ZERO WIDTH SPACE (category Cf)'} ]; for (var i = 0; i < whitespace.length; i++) { assertEquals(whitespace[i].s.trim(), ''); assertEquals(whitespace[i].s.trimLeft(), ''); assertEquals(whitespace[i].s.trimRight(), ''); wsString += whitespace[i].s; } trimString = wsString + testString + wsString; leftTrimString = testString + wsString; // Trimmed from the left. rightTrimString = wsString + testString; // Trimmed from the right. assertEquals(wsString.trim(), ''); assertEquals(wsString.trimLeft(), ''); assertEquals(wsString.trimRight(), ''); assertEquals(trimString.trim(), testString); assertEquals(trimString.trimLeft(), leftTrimString); assertEquals(trimString.trimRight(), rightTrimString); assertEquals(leftTrimString.trim(), testString); assertEquals(leftTrimString.trimLeft(), leftTrimString); assertEquals(leftTrimString.trimRight(), testString); assertEquals(rightTrimString.trim(), testString); assertEquals(rightTrimString.trimLeft(), testString); assertEquals(rightTrimString.trimRight(), rightTrimString); var testValues = [0, Infinity, NaN, true, false, ({}), ['an','array'], ({toString:function(){return 'wibble'}}) ]; for (var i = 0; i < testValues.length; i++) { assertEquals(trim.call(testValues[i]), String(testValues[i])); assertEquals(trimLeft.call(testValues[i]), String(testValues[i])); assertEquals(trimRight.call(testValues[i]), String(testValues[i])); }