Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 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.prototype.codePointAt |
| 9 | |
| 10 | assertEquals(String.prototype.codePointAt.length, 1); |
| 11 | assertEquals(String.prototype.propertyIsEnumerable("codePointAt"), false); |
| 12 | |
| 13 | // String that starts with a BMP symbol |
| 14 | assertEquals("abc\uD834\uDF06def".codePointAt(""), 0x61); |
| 15 | assertEquals("abc\uD834\uDF06def".codePointAt("_"), 0x61); |
| 16 | assertEquals("abc\uD834\uDF06def".codePointAt(), 0x61); |
| 17 | assertEquals("abc\uD834\uDF06def".codePointAt(-Infinity), undefined); |
| 18 | assertEquals("abc\uD834\uDF06def".codePointAt(-1), undefined); |
| 19 | assertEquals("abc\uD834\uDF06def".codePointAt(-0), 0x61); |
| 20 | assertEquals("abc\uD834\uDF06def".codePointAt(0), 0x61); |
| 21 | assertEquals("abc\uD834\uDF06def".codePointAt(3), 0x1D306); |
| 22 | assertEquals("abc\uD834\uDF06def".codePointAt(4), 0xDF06); |
| 23 | assertEquals("abc\uD834\uDF06def".codePointAt(5), 0x64); |
| 24 | assertEquals("abc\uD834\uDF06def".codePointAt(42), undefined); |
| 25 | assertEquals("abc\uD834\uDF06def".codePointAt(Infinity), undefined); |
| 26 | assertEquals("abc\uD834\uDF06def".codePointAt(Infinity), undefined); |
| 27 | assertEquals("abc\uD834\uDF06def".codePointAt(NaN), 0x61); |
| 28 | assertEquals("abc\uD834\uDF06def".codePointAt(false), 0x61); |
| 29 | assertEquals("abc\uD834\uDF06def".codePointAt(null), 0x61); |
| 30 | assertEquals("abc\uD834\uDF06def".codePointAt(undefined), 0x61); |
| 31 | |
| 32 | // String that starts with an astral symbol |
| 33 | assertEquals("\uD834\uDF06def".codePointAt(""), 0x1D306); |
| 34 | assertEquals("\uD834\uDF06def".codePointAt("1"), 0xDF06); |
| 35 | assertEquals("\uD834\uDF06def".codePointAt("_"), 0x1D306); |
| 36 | assertEquals("\uD834\uDF06def".codePointAt(), 0x1D306); |
| 37 | assertEquals("\uD834\uDF06def".codePointAt(-1), undefined); |
| 38 | assertEquals("\uD834\uDF06def".codePointAt(-0), 0x1D306); |
| 39 | assertEquals("\uD834\uDF06def".codePointAt(0), 0x1D306); |
| 40 | assertEquals("\uD834\uDF06def".codePointAt(1), 0xDF06); |
| 41 | assertEquals("\uD834\uDF06def".codePointAt(42), undefined); |
| 42 | assertEquals("\uD834\uDF06def".codePointAt(false), 0x1D306); |
| 43 | assertEquals("\uD834\uDF06def".codePointAt(null), 0x1D306); |
| 44 | assertEquals("\uD834\uDF06def".codePointAt(undefined), 0x1D306); |
| 45 | |
| 46 | // Lone high surrogates |
| 47 | assertEquals("\uD834abc".codePointAt(""), 0xD834); |
| 48 | assertEquals("\uD834abc".codePointAt("_"), 0xD834); |
| 49 | assertEquals("\uD834abc".codePointAt(), 0xD834); |
| 50 | assertEquals("\uD834abc".codePointAt(-1), undefined); |
| 51 | assertEquals("\uD834abc".codePointAt(-0), 0xD834); |
| 52 | assertEquals("\uD834abc".codePointAt(0), 0xD834); |
| 53 | assertEquals("\uD834abc".codePointAt(false), 0xD834); |
| 54 | assertEquals("\uD834abc".codePointAt(NaN), 0xD834); |
| 55 | assertEquals("\uD834abc".codePointAt(null), 0xD834); |
| 56 | assertEquals("\uD834abc".codePointAt(undefined), 0xD834); |
| 57 | |
| 58 | // Lone low surrogates |
| 59 | assertEquals("\uDF06abc".codePointAt(""), 0xDF06); |
| 60 | assertEquals("\uDF06abc".codePointAt("_"), 0xDF06); |
| 61 | assertEquals("\uDF06abc".codePointAt(), 0xDF06); |
| 62 | assertEquals("\uDF06abc".codePointAt(-1), undefined); |
| 63 | assertEquals("\uDF06abc".codePointAt(-0), 0xDF06); |
| 64 | assertEquals("\uDF06abc".codePointAt(0), 0xDF06); |
| 65 | assertEquals("\uDF06abc".codePointAt(false), 0xDF06); |
| 66 | assertEquals("\uDF06abc".codePointAt(NaN), 0xDF06); |
| 67 | assertEquals("\uDF06abc".codePointAt(null), 0xDF06); |
| 68 | assertEquals("\uDF06abc".codePointAt(undefined), 0xDF06); |
| 69 | |
| 70 | assertThrows(function() { |
| 71 | String.prototype.codePointAt.call(undefined); |
| 72 | }, TypeError); |
| 73 | assertThrows(function() { |
| 74 | String.prototype.codePointAt.call(undefined, 4); |
| 75 | }, TypeError); |
| 76 | assertThrows(function() { |
| 77 | String.prototype.codePointAt.call(null); |
| 78 | }, TypeError); |
| 79 | assertThrows(function() { |
| 80 | String.prototype.codePointAt.call(null, 4); |
| 81 | }, TypeError); |
| 82 | assertEquals(String.prototype.codePointAt.call(42, 0), 0x34); |
| 83 | assertEquals(String.prototype.codePointAt.call(42, 1), 0x32); |
| 84 | assertEquals(String.prototype.codePointAt.call({ |
| 85 | toString: function() { return "abc"; } |
| 86 | }, 2), 0x63); |
| 87 | var tmp = 0; |
| 88 | assertEquals(String.prototype.codePointAt.call({ |
| 89 | toString: function() { ++tmp; return String(tmp); } |
| 90 | }, 0), 0x31); |
| 91 | assertEquals(tmp, 1); |