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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 | |
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