1 // Copyright 2014 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Tests taken from: 6 // https://github.com/mathiasbynens/String.fromCodePoint 7 8 assertEquals(String.fromCodePoint.length, 1); 9 assertEquals(String.propertyIsEnumerable("fromCodePoint"), false); 10 11 assertEquals(String.fromCodePoint(""), "\0"); 12 assertEquals(String.fromCodePoint(), ""); 13 assertEquals(String.fromCodePoint(-0), "\0"); 14 assertEquals(String.fromCodePoint(0), "\0"); 15 assertEquals(String.fromCodePoint(0x1D306), "\uD834\uDF06"); 16 assertEquals( 17 String.fromCodePoint(0x1D306, 0x61, 0x1D307), 18 "\uD834\uDF06a\uD834\uDF07"); 19 assertEquals(String.fromCodePoint(0x61, 0x62, 0x1D307), "ab\uD834\uDF07"); 20 assertEquals(String.fromCodePoint(false), "\0"); 21 assertEquals(String.fromCodePoint(null), "\0"); 22 23 assertThrows(function() { String.fromCodePoint("_"); }, RangeError); 24 assertThrows(function() { String.fromCodePoint("+Infinity"); }, RangeError); 25 assertThrows(function() { String.fromCodePoint("-Infinity"); }, RangeError); 26 assertThrows(function() { String.fromCodePoint(-1); }, RangeError); 27 assertThrows(function() { String.fromCodePoint(0x10FFFF + 1); }, RangeError); 28 assertThrows(function() { String.fromCodePoint(3.14); }, RangeError); 29 assertThrows(function() { String.fromCodePoint(3e-2); }, RangeError); 30 assertThrows(function() { String.fromCodePoint(-Infinity); }, RangeError); 31 assertThrows(function() { String.fromCodePoint(+Infinity); }, RangeError); 32 assertThrows(function() { String.fromCodePoint(NaN); }, RangeError); 33 assertThrows(function() { String.fromCodePoint(undefined); }, RangeError); 34 assertThrows(function() { String.fromCodePoint({}); }, RangeError); 35 assertThrows(function() { String.fromCodePoint(/./); }, RangeError); 36 assertThrows(function() { String.fromCodePoint({ 37 valueOf: function() { throw Error(); } }); 38 }, Error); 39 assertThrows(function() { String.fromCodePoint({ 40 valueOf: function() { throw Error(); } }); 41 }, Error); 42 var tmp = 0x60; 43 assertEquals(String.fromCodePoint({ 44 valueOf: function() { ++tmp; return tmp; } 45 }), "a"); 46 assertEquals(tmp, 0x61); 47 48 var counter = Math.pow(2, 15) * 3 / 2; 49 var result = []; 50 while (--counter >= 0) { 51 result.push(0); // one code unit per symbol 52 } 53 String.fromCodePoint.apply(null, result); // must not throw 54 55 var counter = Math.pow(2, 15) * 3 / 2; 56 var result = []; 57 while (--counter >= 0) { 58 result.push(0xFFFF + 1); // two code units per symbol 59 } 60 String.fromCodePoint.apply(null, result); // must not throw 61
