michael@0: // Copyright 2012 Norbert Lindenberg. All rights reserved.
michael@0: // Copyright 2012 Mozilla Corporation. All rights reserved.
michael@0: // This code is governed by the license found in the LICENSE file.
michael@0: 
michael@0: /**
michael@0:  * @description Tests that the function returned by Intl.Collator.prototype.compare
michael@0:  *     returns 0 when comparing Strings that are considered canonically equivalent
michael@0:  *     by the Unicode standard.
michael@0:  * @author Norbert Lindenberg
michael@0:  */
michael@0: 
michael@0: var collator = new Intl.Collator();
michael@0: var pairs = [
michael@0:     // example from Unicode 5.0, section 3.7, definition D70
michael@0:     ["o\u0308", "ö"],
michael@0:     // examples from Unicode 5.0, chapter 3.11
michael@0:     ["ä\u0323", "a\u0323\u0308"],
michael@0:     ["a\u0308\u0323", "a\u0323\u0308"],
michael@0:     ["ạ\u0308", "a\u0323\u0308"],
michael@0:     ["ä\u0306", "a\u0308\u0306"],
michael@0:     ["ă\u0308", "a\u0306\u0308"],
michael@0:     // example from Unicode 5.0, chapter 3.12
michael@0:     ["\u1111\u1171\u11B6", "퓛"],
michael@0:     // examples from UTS 10, Unicode Collation Algorithm
michael@0:     ["Å", "Å"],
michael@0:     ["Å", "A\u030A"],
michael@0:     ["x\u031B\u0323", "x\u0323\u031B"],
michael@0:     ["ự", "ụ\u031B"],
michael@0:     ["ự", "u\u031B\u0323"],
michael@0:     ["ự", "ư\u0323"],
michael@0:     ["ự", "u\u0323\u031B"],
michael@0:     // examples from UAX 15, Unicode Normalization Forms
michael@0:     ["Ç", "C\u0327"],
michael@0:     ["q\u0307\u0323", "q\u0323\u0307"],
michael@0:     ["가", "\u1100\u1161"],
michael@0:     ["Å", "A\u030A"],
michael@0:     ["Ω", "Ω"],
michael@0:     ["Å", "A\u030A"],
michael@0:     ["ô", "o\u0302"],
michael@0:     ["ṩ", "s\u0323\u0307"],
michael@0:     ["ḋ\u0323", "d\u0323\u0307"],
michael@0:     ["ḋ\u0323", "ḍ\u0307"],
michael@0:     ["q\u0307\u0323", "q\u0323\u0307"],
michael@0:     // examples involving supplementary characters from UCD NormalizationTest.txt
michael@0:     ["\uD834\uDD5E", "\uD834\uDD57\uD834\uDD65"],
michael@0:     ["\uD87E\uDC2B", "北"]
michael@0:     
michael@0: ];
michael@0: var i;
michael@0: for (i = 0; i < pairs.length; i++) {
michael@0:     var pair = pairs[i];
michael@0:     if (collator.compare(pair[0], pair[1]) !== 0) {
michael@0:         $ERROR("Collator.compare considers " + pair[0] + " (" + toU(pair[0]) +
michael@0:             ") ≠ " + pair[1] + " (" + toU(pair[1]) + ").");
michael@0:     }
michael@0: }
michael@0: 
michael@0: function toU(s) {
michael@0:     var result = "";
michael@0:     var escape = "\\u0000";
michael@0:     var i;
michael@0:     for (i = 0; i < s.length; i++) {
michael@0:         var hex = s.charCodeAt(i).toString(16);
michael@0:         result += escape.substring(0, escape.length - hex.length) + hex;
michael@0:     }
michael@0:     return result;
michael@0: }
michael@0: