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293fd04535
Convert anything to string, but Buffer, TypedArray and ArrayBuffer ``` var uint8 = new Uint8Array([0xf0, 0x9f, 0x90]); Buffer.byteLength(uint8); // should be 3, but returns 11 Buffer.byteLength(uint8.buffer); // should be 3, but return 20 ``` PR-URL: https://github.com/nodejs/node/pull/5255 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Trevor Norris <trev.norris@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
87 lines
3.1 KiB
JavaScript
87 lines
3.1 KiB
JavaScript
'use strict';
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require('../common');
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var assert = require('assert');
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var Buffer = require('buffer').Buffer;
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var SlowBuffer = require('buffer').SlowBuffer;
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// coerce values to string
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assert.equal(Buffer.byteLength(32, 'binary'), 2);
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assert.equal(Buffer.byteLength(NaN, 'utf8'), 3);
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assert.equal(Buffer.byteLength({}, 'binary'), 15);
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assert.equal(Buffer.byteLength(), 9);
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var buff = new Buffer(10);
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assert(ArrayBuffer.isView(buff));
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var slowbuff = new SlowBuffer(10);
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assert(ArrayBuffer.isView(slowbuff));
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// buffer
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var incomplete = Buffer.from([0xe4, 0xb8, 0xad, 0xe6, 0x96]);
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assert.equal(Buffer.byteLength(incomplete), 5);
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var ascii = Buffer.from('abc');
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assert.equal(Buffer.byteLength(ascii), 3);
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// ArrayBuffer
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var buffer = new ArrayBuffer(8);
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assert.equal(Buffer.byteLength(buffer), 8);
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// TypedArray
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var int8 = new Int8Array(8);
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assert.equal(Buffer.byteLength(int8), 8);
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var uint8 = new Uint8Array(8);
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assert.equal(Buffer.byteLength(uint8), 8);
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var uintc8 = new Uint8ClampedArray(2);
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assert.equal(Buffer.byteLength(uintc8), 2);
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var int16 = new Int16Array(8);
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assert.equal(Buffer.byteLength(int16), 16);
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var uint16 = new Uint16Array(8);
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assert.equal(Buffer.byteLength(uint16), 16);
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var int32 = new Int32Array(8);
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assert.equal(Buffer.byteLength(int32), 32);
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var uint32 = new Uint32Array(8);
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assert.equal(Buffer.byteLength(uint32), 32);
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var float32 = new Float32Array(8);
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assert.equal(Buffer.byteLength(float32), 32);
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var float64 = new Float64Array(8);
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assert.equal(Buffer.byteLength(float64), 64);
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// DataView
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var dv = new DataView(new ArrayBuffer(2));
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assert.equal(Buffer.byteLength(dv), 2);
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// special case: zero length string
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assert.equal(Buffer.byteLength('', 'ascii'), 0);
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assert.equal(Buffer.byteLength('', 'HeX'), 0);
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// utf8
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assert.equal(Buffer.byteLength('∑éllö wørl∂!', 'utf-8'), 19);
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assert.equal(Buffer.byteLength('κλμνξο', 'utf8'), 12);
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assert.equal(Buffer.byteLength('挵挶挷挸挹', 'utf-8'), 15);
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assert.equal(Buffer.byteLength('𠝹𠱓𠱸', 'UTF8'), 12);
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// without an encoding, utf8 should be assumed
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assert.equal(Buffer.byteLength('hey there'), 9);
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assert.equal(Buffer.byteLength('𠱸挶νξ#xx :)'), 17);
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assert.equal(Buffer.byteLength('hello world', ''), 11);
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// it should also be assumed with unrecognized encoding
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assert.equal(Buffer.byteLength('hello world', 'abc'), 11);
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assert.equal(Buffer.byteLength('ßœ∑≈', 'unkn0wn enc0ding'), 10);
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// base64
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assert.equal(Buffer.byteLength('aGVsbG8gd29ybGQ=', 'base64'), 11);
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assert.equal(Buffer.byteLength('bm9kZS5qcyByb2NrcyE=', 'base64'), 14);
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assert.equal(Buffer.byteLength('aGkk', 'base64'), 3);
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assert.equal(Buffer.byteLength('bHNrZGZsa3NqZmtsc2xrZmFqc2RsZmtqcw==',
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'base64'), 25);
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// special padding
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assert.equal(Buffer.byteLength('aaa=', 'base64'), 2);
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assert.equal(Buffer.byteLength('aaaa==', 'base64'), 3);
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assert.equal(Buffer.byteLength('Il était tué'), 14);
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assert.equal(Buffer.byteLength('Il était tué', 'utf8'), 14);
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assert.equal(Buffer.byteLength('Il était tué', 'ascii'), 12);
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assert.equal(Buffer.byteLength('Il était tué', 'binary'), 12);
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['ucs2', 'ucs-2', 'utf16le', 'utf-16le'].forEach(function(encoding) {
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assert.equal(24, Buffer.byteLength('Il était tué', encoding));
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});
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