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 // Flags: --harmony-strings 6 7 // Tests taken from: 8 // https://github.com/mathiasbynens/String.fromCodePoint 9 10 assertEquals(String.fromCodePoint.length, 1); 11 assertEquals(String.propertyIsEnumerable("fromCodePoint"), false); 12 13 assertEquals(String.fromCodePoint(""), "\0"); 14 assertEquals(String.fromCodePoint(), ""); 15 assertEquals(String.fromCodePoint(-0), "\0"); 16 assertEquals(String.fromCodePoint(0), "\0"); 17 assertEquals(String.fromCodePoint(0x1D306), "\uD834\uDF06"); 18 assertEquals( 19 String.fromCodePoint(0x1D306, 0x61, 0x1D307), 20 "\uD834\uDF06a\uD834\uDF07"); 21 assertEquals(String.fromCodePoint(0x61, 0x62, 0x1D307), "ab\uD834\uDF07"); 22 assertEquals(String.fromCodePoint(false), "\0"); 23 assertEquals(String.fromCodePoint(null), "\0"); 24 25 assertThrows(function() { String.fromCodePoint("_"); }, RangeError); 26 assertThrows(function() { String.fromCodePoint("+Infinity"); }, RangeError); 27 assertThrows(function() { String.fromCodePoint("-Infinity"); }, RangeError); 28 assertThrows(function() { String.fromCodePoint(-1); }, RangeError); 29 assertThrows(function() { String.fromCodePoint(0x10FFFF + 1); }, RangeError); 30 assertThrows(function() { String.fromCodePoint(3.14); }, RangeError); 31 assertThrows(function() { String.fromCodePoint(3e-2); }, RangeError); 32 assertThrows(function() { String.fromCodePoint(-Infinity); }, RangeError); 33 assertThrows(function() { String.fromCodePoint(+Infinity); }, RangeError); 34 assertThrows(function() { String.fromCodePoint(NaN); }, RangeError); 35 assertThrows(function() { String.fromCodePoint(undefined); }, RangeError); 36 assertThrows(function() { String.fromCodePoint({}); }, RangeError); 37 assertThrows(function() { String.fromCodePoint(/./); }, RangeError); 38 assertThrows(function() { String.fromCodePoint({ 39 valueOf: function() { throw Error(); } }); 40 }, Error); 41 assertThrows(function() { String.fromCodePoint({ 42 valueOf: function() { throw Error(); } }); 43 }, Error); 44 var tmp = 0x60; 45 assertEquals(String.fromCodePoint({ 46 valueOf: function() { ++tmp; return tmp; } 47 }), "a"); 48 assertEquals(tmp, 0x61); 49 50 var counter = Math.pow(2, 15) * 3 / 2; 51 var result = []; 52 while (--counter >= 0) { 53 result.push(0); // one code unit per symbol 54 } 55 String.fromCodePoint.apply(null, result); // must not throw 56 57 var counter = Math.pow(2, 15) * 3 / 2; 58 var result = []; 59 while (--counter >= 0) { 60 result.push(0xFFFF + 1); // two code units per symbol 61 } 62 String.fromCodePoint.apply(null, result); // must not throw 63
