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
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
'use strict';
const common = require('../common');
const assert = require('assert');
const SlowBuffer = require('buffer').SlowBuffer;
const vm = require('vm');
[
[32, 'latin1'],
[NaN, 'utf8'],
[{}, 'latin1'],
[]
].forEach((args) => {
common.expectsError(
() => Buffer.byteLength(...args),
{
code: 'ERR_INVALID_ARG_TYPE',
type: TypeError,
message: 'The "string" argument must be of type string or an instance ' +
'of Buffer or ArrayBuffer.' +
common.invalidArgTypeHelper(args[0])
}
);
});
assert.strictEqual(Buffer.byteLength('', undefined, true), -1);
assert(ArrayBuffer.isView(new Buffer(10)));
assert(ArrayBuffer.isView(new SlowBuffer(10)));
assert(ArrayBuffer.isView(Buffer.alloc(10)));
assert(ArrayBuffer.isView(Buffer.allocUnsafe(10)));
assert(ArrayBuffer.isView(Buffer.allocUnsafeSlow(10)));
assert(ArrayBuffer.isView(Buffer.from('')));
// buffer
const incomplete = Buffer.from([0xe4, 0xb8, 0xad, 0xe6, 0x96]);
assert.strictEqual(Buffer.byteLength(incomplete), 5);
const ascii = Buffer.from('abc');
assert.strictEqual(Buffer.byteLength(ascii), 3);
// ArrayBuffer
const buffer = new ArrayBuffer(8);
assert.strictEqual(Buffer.byteLength(buffer), 8);
// TypedArray
const int8 = new Int8Array(8);
assert.strictEqual(Buffer.byteLength(int8), 8);
const uint8 = new Uint8Array(8);
assert.strictEqual(Buffer.byteLength(uint8), 8);
const uintc8 = new Uint8ClampedArray(2);
assert.strictEqual(Buffer.byteLength(uintc8), 2);
const int16 = new Int16Array(8);
assert.strictEqual(Buffer.byteLength(int16), 16);
const uint16 = new Uint16Array(8);
assert.strictEqual(Buffer.byteLength(uint16), 16);
const int32 = new Int32Array(8);
assert.strictEqual(Buffer.byteLength(int32), 32);
const uint32 = new Uint32Array(8);
assert.strictEqual(Buffer.byteLength(uint32), 32);
const float32 = new Float32Array(8);
assert.strictEqual(Buffer.byteLength(float32), 32);
const float64 = new Float64Array(8);
assert.strictEqual(Buffer.byteLength(float64), 64);
// DataView
const dv = new DataView(new ArrayBuffer(2));
assert.strictEqual(Buffer.byteLength(dv), 2);
// Special case: zero length string
assert.strictEqual(Buffer.byteLength('', 'ascii'), 0);
assert.strictEqual(Buffer.byteLength('', 'HeX'), 0);
// utf8
assert.strictEqual(Buffer.byteLength('∑éllö wørl∂!', 'utf-8'), 19);
assert.strictEqual(Buffer.byteLength('κλμνξο', 'utf8'), 12);
assert.strictEqual(Buffer.byteLength('挵挶挷挸挹', 'utf-8'), 15);
assert.strictEqual(Buffer.byteLength('𠝹𠱓𠱸', 'UTF8'), 12);
// Without an encoding, utf8 should be assumed
assert.strictEqual(Buffer.byteLength('hey there'), 9);
assert.strictEqual(Buffer.byteLength('𠱸挶νξ#xx :)'), 17);
assert.strictEqual(Buffer.byteLength('hello world', ''), 11);
// It should also be assumed with unrecognized encoding
assert.strictEqual(Buffer.byteLength('hello world', 'abc'), 11);
assert.strictEqual(Buffer.byteLength('ßœ∑≈', 'unkn0wn enc0ding'), 10);
// base64
assert.strictEqual(Buffer.byteLength('aGVsbG8gd29ybGQ=', 'base64'), 11);
assert.strictEqual(Buffer.byteLength('aGVsbG8gd29ybGQ=', 'BASE64'), 11);
assert.strictEqual(Buffer.byteLength('bm9kZS5qcyByb2NrcyE=', 'base64'), 14);
assert.strictEqual(Buffer.byteLength('aGkk', 'base64'), 3);
assert.strictEqual(
Buffer.byteLength('bHNrZGZsa3NqZmtsc2xrZmFqc2RsZmtqcw==', 'base64'), 25
);
// special padding
assert.strictEqual(Buffer.byteLength('aaa=', 'base64'), 2);
assert.strictEqual(Buffer.byteLength('aaaa==', 'base64'), 3);
assert.strictEqual(Buffer.byteLength('Il était tué'), 14);
assert.strictEqual(Buffer.byteLength('Il était tué', 'utf8'), 14);
['ascii', 'latin1', 'binary']
.reduce((es, e) => es.concat(e, e.toUpperCase()), [])
.forEach((encoding) => {
assert.strictEqual(Buffer.byteLength('Il était tué', encoding), 12);
});
['ucs2', 'ucs-2', 'utf16le', 'utf-16le']
.reduce((es, e) => es.concat(e, e.toUpperCase()), [])
.forEach((encoding) => {
assert.strictEqual(Buffer.byteLength('Il était tué', encoding), 24);
});
// Test that ArrayBuffer from a different context is detected correctly
const arrayBuf = vm.runInNewContext('new ArrayBuffer()');
assert.strictEqual(Buffer.byteLength(arrayBuf), 0);
// Verify that invalid encodings are treated as utf8
for (let i = 1; i < 10; i++) {
const encoding = String(i).repeat(i);
assert.ok(!Buffer.isEncoding(encoding));
assert.strictEqual(Buffer.byteLength('foo', encoding),
Buffer.byteLength('foo', 'utf8'));
}
|
