test-buffer-bytelength.js (3293B)
1 'use strict'; 2 var Buffer = require('../../').Buffer; 3 4 5 6 var assert = require('assert'); 7 var Buffer = require('../../').Buffer; 8 var SlowBuffer = require('../../').SlowBuffer; 9 10 // coerce values to string 11 assert.equal(Buffer.byteLength(32, 'latin1'), 2); 12 assert.equal(Buffer.byteLength(NaN, 'utf8'), 3); 13 assert.equal(Buffer.byteLength({}, 'latin1'), 15); 14 assert.equal(Buffer.byteLength(), 9); 15 16 var buff = new Buffer(10); 17 assert(ArrayBuffer.isView(buff)); 18 var slowbuff = new SlowBuffer(10); 19 assert(ArrayBuffer.isView(slowbuff)); 20 21 // buffer 22 var incomplete = Buffer.from([0xe4, 0xb8, 0xad, 0xe6, 0x96]); 23 assert.equal(Buffer.byteLength(incomplete), 5); 24 var ascii = Buffer.from('abc'); 25 assert.equal(Buffer.byteLength(ascii), 3); 26 27 // ArrayBuffer 28 var buffer = new ArrayBuffer(8); 29 assert.equal(Buffer.byteLength(buffer), 8); 30 31 // TypedArray 32 var int8 = new Int8Array(8); 33 assert.equal(Buffer.byteLength(int8), 8); 34 var uint8 = new Uint8Array(8); 35 assert.equal(Buffer.byteLength(uint8), 8); 36 var uintc8 = new Uint8ClampedArray(2); 37 assert.equal(Buffer.byteLength(uintc8), 2); 38 var int16 = new Int16Array(8); 39 assert.equal(Buffer.byteLength(int16), 16); 40 var uint16 = new Uint16Array(8); 41 assert.equal(Buffer.byteLength(uint16), 16); 42 var int32 = new Int32Array(8); 43 assert.equal(Buffer.byteLength(int32), 32); 44 var uint32 = new Uint32Array(8); 45 assert.equal(Buffer.byteLength(uint32), 32); 46 var float32 = new Float32Array(8); 47 assert.equal(Buffer.byteLength(float32), 32); 48 var float64 = new Float64Array(8); 49 assert.equal(Buffer.byteLength(float64), 64); 50 51 // DataView 52 var dv = new DataView(new ArrayBuffer(2)); 53 assert.equal(Buffer.byteLength(dv), 2); 54 55 // special case: zero length string 56 assert.equal(Buffer.byteLength('', 'ascii'), 0); 57 assert.equal(Buffer.byteLength('', 'HeX'), 0); 58 59 // utf8 60 assert.equal(Buffer.byteLength('∑éllö wørl∂!', 'utf-8'), 19); 61 assert.equal(Buffer.byteLength('κλμνξο', 'utf8'), 12); 62 assert.equal(Buffer.byteLength('挵挶挷挸挹', 'utf-8'), 15); 63 assert.equal(Buffer.byteLength('𠝹𠱓𠱸', 'UTF8'), 12); 64 // without an encoding, utf8 should be assumed 65 assert.equal(Buffer.byteLength('hey there'), 9); 66 assert.equal(Buffer.byteLength('𠱸挶νξ#xx :)'), 17); 67 assert.equal(Buffer.byteLength('hello world', ''), 11); 68 // it should also be assumed with unrecognized encoding 69 assert.equal(Buffer.byteLength('hello world', 'abc'), 11); 70 assert.equal(Buffer.byteLength('ßœ∑≈', 'unkn0wn enc0ding'), 10); 71 72 // base64 73 assert.equal(Buffer.byteLength('aGVsbG8gd29ybGQ=', 'base64'), 11); 74 assert.equal(Buffer.byteLength('bm9kZS5qcyByb2NrcyE=', 'base64'), 14); 75 assert.equal(Buffer.byteLength('aGkk', 'base64'), 3); 76 assert.equal(Buffer.byteLength('bHNrZGZsa3NqZmtsc2xrZmFqc2RsZmtqcw==', 77 'base64'), 25); 78 // special padding 79 assert.equal(Buffer.byteLength('aaa=', 'base64'), 2); 80 assert.equal(Buffer.byteLength('aaaa==', 'base64'), 3); 81 82 assert.equal(Buffer.byteLength('Il était tué'), 14); 83 assert.equal(Buffer.byteLength('Il était tué', 'utf8'), 14); 84 assert.equal(Buffer.byteLength('Il était tué', 'ascii'), 12); 85 assert.equal(Buffer.byteLength('Il était tué', 'latin1'), 12); 86 assert.equal(Buffer.byteLength('Il était tué', 'binary'), 12); 87 ['ucs2', 'ucs-2', 'utf16le', 'utf-16le'].forEach(function(encoding) { 88 assert.equal(24, Buffer.byteLength('Il était tué', encoding)); 89 }); 90