shim.js
1.79 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
// Taken from: https://github.com/mathiasbynens/String.fromCodePoint/blob/master
// /tests/tests.js
'use strict';
var pow = Math.pow;
module.exports = function (t, a) {
var counter, result;
a(t.length, 1, "Length");
a(String.propertyIsEnumerable('fromCodePoint'), false, "Not enumerable");
a(t(''), '\0', "Empty string");
a(t(), '', "No arguments");
a(t(-0), '\0', "-0");
a(t(0), '\0', "0");
a(t(0x1D306), '\uD834\uDF06', "Unicode");
a(t(0x1D306, 0x61, 0x1D307), '\uD834\uDF06a\uD834\uDF07', "Complex unicode");
a(t(0x61, 0x62, 0x1D307), 'ab\uD834\uDF07', "Complex");
a(t(false), '\0', "false");
a(t(null), '\0', "null");
a.throws(function () { t('_'); }, RangeError, "_");
a.throws(function () { t(Infinity); }, RangeError, "Infinity");
a.throws(function () { t(-Infinity); }, RangeError, "-Infinity");
a.throws(function () { t(-1); }, RangeError, "-1");
a.throws(function () { t(0x10FFFF + 1); }, RangeError, "Range error #1");
a.throws(function () { t(3.14); }, RangeError, "Range error #2");
a.throws(function () { t(3e-2); }, RangeError, "Range error #3");
a.throws(function () { t(-Infinity); }, RangeError, "Range error #4");
a.throws(function () { t(+Infinity); }, RangeError, "Range error #5");
a.throws(function () { t(NaN); }, RangeError, "Range error #6");
a.throws(function () { t(undefined); }, RangeError, "Range error #7");
a.throws(function () { t({}); }, RangeError, "Range error #8");
a.throws(function () { t(/re/); }, RangeError, "Range error #9");
counter = pow(2, 15) * 3 / 2;
result = [];
while (--counter >= 0) result.push(0); // one code unit per symbol
t.apply(null, result); // must not throw
counter = pow(2, 15) * 3 / 2;
result = [];
while (--counter >= 0) result.push(0xFFFF + 1); // two code units per symbol
t.apply(null, result); // must not throw
};