| 'use strict'; |
| var Buffer = require('../../').Buffer; |
| const common = require('./common'); |
| const assert = require('assert'); |
| const vm = require('vm'); |
| |
| const SlowBuffer = require('../../').SlowBuffer; |
| |
| |
| const b = Buffer.allocUnsafe(1024); |
| assert.strictEqual(1024, b.length); |
| |
| b[0] = -1; |
| assert.strictEqual(b[0], 255); |
| |
| for (let i = 0; i < 1024; i++) { |
| b[i] = i % 256; |
| } |
| |
| for (let i = 0; i < 1024; i++) { |
| assert.strictEqual(i % 256, b[i]); |
| } |
| |
| const c = Buffer.allocUnsafe(512); |
| assert.strictEqual(512, c.length); |
| |
| const d = Buffer.from([]); |
| assert.strictEqual(0, d.length); |
| |
| // Test offset properties |
| { |
| const b = Buffer.alloc(128); |
| assert.strictEqual(128, b.length); |
| assert.strictEqual(0, b.byteOffset); |
| assert.strictEqual(0, b.offset); |
| } |
| |
| // Test creating a Buffer from a Uint32Array |
| { |
| const ui32 = new Uint32Array(4).fill(42); |
| const e = Buffer.from(ui32); |
| for (const [index, value] of e.entries()) { |
| assert.strictEqual(value, ui32[index]); |
| } |
| } |
| // Test creating a Buffer from a Uint32Array (old constructor) |
| { |
| const ui32 = new Uint32Array(4).fill(42); |
| const e = Buffer(ui32); |
| for (const [key, value] of e.entries()) { |
| assert.deepStrictEqual(value, ui32[key]); |
| } |
| } |
| |
| // Test invalid encoding for Buffer.toString |
| assert.throws(() => b.toString('invalid'), |
| /Unknown encoding: invalid/); |
| // invalid encoding for Buffer.write |
| assert.throws(() => b.write('test string', 0, 5, 'invalid'), |
| /Unknown encoding: invalid/); |
| // unsupported arguments for Buffer.write |
| assert.throws(() => b.write('test', 'utf8', 0), |
| /is no longer supported/); |
| |
| |
| // try to create 0-length buffers |
| assert.doesNotThrow(() => Buffer.from('')); |
| assert.doesNotThrow(() => Buffer.from('', 'ascii')); |
| assert.doesNotThrow(() => Buffer.from('', 'latin1')); |
| assert.doesNotThrow(() => Buffer.alloc(0)); |
| assert.doesNotThrow(() => Buffer.allocUnsafe(0)); |
| assert.doesNotThrow(() => new Buffer('')); |
| assert.doesNotThrow(() => new Buffer('', 'ascii')); |
| assert.doesNotThrow(() => new Buffer('', 'latin1')); |
| assert.doesNotThrow(() => new Buffer('', 'binary')); |
| assert.doesNotThrow(() => Buffer(0)); |
| |
| // try to write a 0-length string beyond the end of b |
| assert.throws(() => b.write('', 2048), RangeError); |
| |
| // throw when writing to negative offset |
| assert.throws(() => b.write('a', -1), RangeError); |
| |
| // throw when writing past bounds from the pool |
| assert.throws(() => b.write('a', 2048), RangeError); |
| |
| // throw when writing to negative offset |
| assert.throws(() => b.write('a', -1), RangeError); |
| |
| // try to copy 0 bytes worth of data into an empty buffer |
| b.copy(Buffer.alloc(0), 0, 0, 0); |
| |
| // try to copy 0 bytes past the end of the target buffer |
| b.copy(Buffer.alloc(0), 1, 1, 1); |
| b.copy(Buffer.alloc(1), 1, 1, 1); |
| |
| // try to copy 0 bytes from past the end of the source buffer |
| b.copy(Buffer.alloc(1), 0, 2048, 2048); |
| |
| // testing for smart defaults and ability to pass string values as offset |
| { |
| const writeTest = Buffer.from('abcdes'); |
| writeTest.write('n', 'ascii'); |
| writeTest.write('o', '1', 'ascii'); |
| writeTest.write('d', '2', 'ascii'); |
| writeTest.write('e', 3, 'ascii'); |
| writeTest.write('j', 4, 'ascii'); |
| assert.strictEqual(writeTest.toString(), 'nodejs'); |
| } |
| |
| // Offset points to the end of the buffer |
| // (see https://github.com/nodejs/node/issues/8127). |
| assert.doesNotThrow(() => Buffer.alloc(1).write('', 1, 0)); |
| |
| // ASCII slice test |
| { |
| const asciiString = 'hello world'; |
| |
| for (let i = 0; i < asciiString.length; i++) { |
| b[i] = asciiString.charCodeAt(i); |
| } |
| const asciiSlice = b.toString('ascii', 0, asciiString.length); |
| assert.strictEqual(asciiString, asciiSlice); |
| } |
| |
| { |
| const asciiString = 'hello world'; |
| const offset = 100; |
| |
| assert.strictEqual(asciiString.length, b.write(asciiString, offset, 'ascii')); |
| const asciiSlice = b.toString('ascii', offset, offset + asciiString.length); |
| assert.strictEqual(asciiString, asciiSlice); |
| } |
| |
| { |
| const asciiString = 'hello world'; |
| const offset = 100; |
| |
| const sliceA = b.slice(offset, offset + asciiString.length); |
| const sliceB = b.slice(offset, offset + asciiString.length); |
| for (let i = 0; i < asciiString.length; i++) { |
| assert.strictEqual(sliceA[i], sliceB[i]); |
| } |
| } |
| |
| // UTF-8 slice test |
| { |
| const utf8String = '¡hέlló wôrld!'; |
| const offset = 100; |
| |
| b.write(utf8String, 0, Buffer.byteLength(utf8String), 'utf8'); |
| let utf8Slice = b.toString('utf8', 0, Buffer.byteLength(utf8String)); |
| assert.strictEqual(utf8String, utf8Slice); |
| |
| assert.strictEqual(Buffer.byteLength(utf8String), |
| b.write(utf8String, offset, 'utf8')); |
| utf8Slice = b.toString('utf8', offset, |
| offset + Buffer.byteLength(utf8String)); |
| assert.strictEqual(utf8String, utf8Slice); |
| |
| const sliceA = b.slice(offset, offset + Buffer.byteLength(utf8String)); |
| const sliceB = b.slice(offset, offset + Buffer.byteLength(utf8String)); |
| for (let i = 0; i < Buffer.byteLength(utf8String); i++) { |
| assert.strictEqual(sliceA[i], sliceB[i]); |
| } |
| } |
| |
| { |
| const slice = b.slice(100, 150); |
| assert.strictEqual(50, slice.length); |
| for (let i = 0; i < 50; i++) { |
| assert.strictEqual(b[100 + i], slice[i]); |
| } |
| } |
| |
| { |
| // make sure only top level parent propagates from allocPool |
| const b = Buffer.allocUnsafe(5); |
| const c = b.slice(0, 4); |
| const d = c.slice(0, 2); |
| assert.strictEqual(b.parent, c.parent); |
| assert.strictEqual(b.parent, d.parent); |
| } |
| |
| { |
| // also from a non-pooled instance |
| const b = Buffer.allocUnsafeSlow(5); |
| const c = b.slice(0, 4); |
| const d = c.slice(0, 2); |
| assert.strictEqual(c.parent, d.parent); |
| } |
| |
| { |
| // Bug regression test |
| const testValue = '\u00F6\u65E5\u672C\u8A9E'; // ö日本語 |
| const buffer = Buffer.allocUnsafe(32); |
| const size = buffer.write(testValue, 0, 'utf8'); |
| const slice = buffer.toString('utf8', 0, size); |
| assert.strictEqual(slice, testValue); |
| } |
| |
| { |
| // Test triple slice |
| const a = Buffer.allocUnsafe(8); |
| for (let i = 0; i < 8; i++) a[i] = i; |
| const b = a.slice(4, 8); |
| assert.strictEqual(4, b[0]); |
| assert.strictEqual(5, b[1]); |
| assert.strictEqual(6, b[2]); |
| assert.strictEqual(7, b[3]); |
| const c = b.slice(2, 4); |
| assert.strictEqual(6, c[0]); |
| assert.strictEqual(7, c[1]); |
| } |
| |
| { |
| const d = Buffer.from([23, 42, 255]); |
| assert.strictEqual(d.length, 3); |
| assert.strictEqual(d[0], 23); |
| assert.strictEqual(d[1], 42); |
| assert.strictEqual(d[2], 255); |
| assert.deepStrictEqual(d, Buffer.from(d)); |
| } |
| |
| { |
| // Test for proper UTF-8 Encoding |
| const e = Buffer.from('über'); |
| assert.deepStrictEqual(e, Buffer.from([195, 188, 98, 101, 114])); |
| } |
| |
| { |
| // Test for proper ascii Encoding, length should be 4 |
| const f = Buffer.from('über', 'ascii'); |
| assert.deepStrictEqual(f, Buffer.from([252, 98, 101, 114])); |
| } |
| |
| ['ucs2', 'ucs-2', 'utf16le', 'utf-16le'].forEach((encoding) => { |
| { |
| // Test for proper UTF16LE encoding, length should be 8 |
| const f = Buffer.from('über', encoding); |
| assert.deepStrictEqual(f, Buffer.from([252, 0, 98, 0, 101, 0, 114, 0])); |
| } |
| |
| { |
| // Length should be 12 |
| const f = Buffer.from('привет', encoding); |
| assert.deepStrictEqual( |
| f, Buffer.from([63, 4, 64, 4, 56, 4, 50, 4, 53, 4, 66, 4]) |
| ); |
| assert.strictEqual(f.toString(encoding), 'привет'); |
| } |
| |
| { |
| const f = Buffer.from([0, 0, 0, 0, 0]); |
| assert.strictEqual(f.length, 5); |
| const size = f.write('あいうえお', encoding); |
| assert.strictEqual(size, 4); |
| assert.deepStrictEqual(f, Buffer.from([0x42, 0x30, 0x44, 0x30, 0x00])); |
| } |
| }); |
| |
| { |
| const f = Buffer.from('\uD83D\uDC4D', 'utf-16le'); // THUMBS UP SIGN (U+1F44D) |
| assert.strictEqual(f.length, 4); |
| assert.deepStrictEqual(f, Buffer.from('3DD84DDC', 'hex')); |
| } |
| |
| // Test construction from arrayish object |
| { |
| const arrayIsh = { 0: 0, 1: 1, 2: 2, 3: 3, length: 4 }; |
| let g = Buffer.from(arrayIsh); |
| assert.deepStrictEqual(g, Buffer.from([0, 1, 2, 3])); |
| const strArrayIsh = { 0: '0', 1: '1', 2: '2', 3: '3', length: 4 }; |
| g = Buffer.from(strArrayIsh); |
| assert.deepStrictEqual(g, Buffer.from([0, 1, 2, 3])); |
| } |
| |
| // |
| // Test toString('base64') |
| // |
| assert.strictEqual('TWFu', (Buffer.from('Man')).toString('base64')); |
| |
| { |
| // test that regular and URL-safe base64 both work |
| const expected = [0xff, 0xff, 0xbe, 0xff, 0xef, 0xbf, 0xfb, 0xef, 0xff]; |
| assert.deepStrictEqual(Buffer.from('//++/++/++//', 'base64'), |
| Buffer.from(expected)); |
| assert.deepStrictEqual(Buffer.from('__--_--_--__', 'base64'), |
| Buffer.from(expected)); |
| } |
| |
| { |
| // big example |
| const quote = 'Man is distinguished, not only by his reason, but by this ' + |
| 'singular passion from other animals, which is a lust ' + |
| 'of the mind, that by a perseverance of delight in the ' + |
| 'continued and indefatigable generation of knowledge, ' + |
| 'exceeds the short vehemence of any carnal pleasure.'; |
| const expected = 'TWFuIGlzIGRpc3Rpbmd1aXNoZWQsIG5vdCBvbmx5IGJ5IGhpcyByZWFzb' + |
| '24sIGJ1dCBieSB0aGlzIHNpbmd1bGFyIHBhc3Npb24gZnJvbSBvdGhlci' + |
| 'BhbmltYWxzLCB3aGljaCBpcyBhIGx1c3Qgb2YgdGhlIG1pbmQsIHRoYXQ' + |
| 'gYnkgYSBwZXJzZXZlcmFuY2Ugb2YgZGVsaWdodCBpbiB0aGUgY29udGlu' + |
| 'dWVkIGFuZCBpbmRlZmF0aWdhYmxlIGdlbmVyYXRpb24gb2Yga25vd2xlZ' + |
| 'GdlLCBleGNlZWRzIHRoZSBzaG9ydCB2ZWhlbWVuY2Ugb2YgYW55IGNhcm' + |
| '5hbCBwbGVhc3VyZS4='; |
| assert.strictEqual(expected, (Buffer.from(quote)).toString('base64')); |
| |
| let b = Buffer.allocUnsafe(1024); |
| let bytesWritten = b.write(expected, 0, 'base64'); |
| assert.strictEqual(quote.length, bytesWritten); |
| assert.strictEqual(quote, b.toString('ascii', 0, quote.length)); |
| |
| // check that the base64 decoder ignores whitespace |
| const expectedWhite = `${expected.slice(0, 60)} \n` + |
| `${expected.slice(60, 120)} \n` + |
| `${expected.slice(120, 180)} \n` + |
| `${expected.slice(180, 240)} \n` + |
| `${expected.slice(240, 300)}\n` + |
| `${expected.slice(300, 360)}\n`; |
| b = Buffer.allocUnsafe(1024); |
| bytesWritten = b.write(expectedWhite, 0, 'base64'); |
| assert.strictEqual(quote.length, bytesWritten); |
| assert.strictEqual(quote, b.toString('ascii', 0, quote.length)); |
| |
| // check that the base64 decoder on the constructor works |
| // even in the presence of whitespace. |
| b = Buffer.from(expectedWhite, 'base64'); |
| assert.strictEqual(quote.length, b.length); |
| assert.strictEqual(quote, b.toString('ascii', 0, quote.length)); |
| |
| // check that the base64 decoder ignores illegal chars |
| const expectedIllegal = expected.slice(0, 60) + ' \x80' + |
| expected.slice(60, 120) + ' \xff' + |
| expected.slice(120, 180) + ' \x00' + |
| expected.slice(180, 240) + ' \x98' + |
| expected.slice(240, 300) + '\x03' + |
| expected.slice(300, 360); |
| b = Buffer.from(expectedIllegal, 'base64'); |
| assert.strictEqual(quote.length, b.length); |
| assert.strictEqual(quote, b.toString('ascii', 0, quote.length)); |
| } |
| |
| assert.strictEqual(Buffer.from('', 'base64').toString(), ''); |
| assert.strictEqual(Buffer.from('K', 'base64').toString(), ''); |
| |
| // multiple-of-4 with padding |
| assert.strictEqual(Buffer.from('Kg==', 'base64').toString(), '*'); |
| assert.strictEqual(Buffer.from('Kio=', 'base64').toString(), '*'.repeat(2)); |
| assert.strictEqual(Buffer.from('Kioq', 'base64').toString(), '*'.repeat(3)); |
| assert.strictEqual(Buffer.from('KioqKg==', 'base64').toString(), '*'.repeat(4)); |
| assert.strictEqual(Buffer.from('KioqKio=', 'base64').toString(), '*'.repeat(5)); |
| assert.strictEqual(Buffer.from('KioqKioq', 'base64').toString(), '*'.repeat(6)); |
| assert.strictEqual(Buffer.from('KioqKioqKg==', 'base64').toString(), |
| '*'.repeat(7)); |
| assert.strictEqual(Buffer.from('KioqKioqKio=', 'base64').toString(), |
| '*'.repeat(8)); |
| assert.strictEqual(Buffer.from('KioqKioqKioq', 'base64').toString(), |
| '*'.repeat(9)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKg==', 'base64').toString(), |
| '*'.repeat(10)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKio=', 'base64').toString(), |
| '*'.repeat(11)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKioq', 'base64').toString(), |
| '*'.repeat(12)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKioqKg==', 'base64').toString(), |
| '*'.repeat(13)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKioqKio=', 'base64').toString(), |
| '*'.repeat(14)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKioqKioq', 'base64').toString(), |
| '*'.repeat(15)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKioqKioqKg==', 'base64').toString(), |
| '*'.repeat(16)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKioqKioqKio=', 'base64').toString(), |
| '*'.repeat(17)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKioqKioqKioq', 'base64').toString(), |
| '*'.repeat(18)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKioqKioqKioqKg==', |
| 'base64').toString(), |
| '*'.repeat(19)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKioqKioqKioqKio=', |
| 'base64').toString(), |
| '*'.repeat(20)); |
| |
| // no padding, not a multiple of 4 |
| assert.strictEqual(Buffer.from('Kg', 'base64').toString(), '*'); |
| assert.strictEqual(Buffer.from('Kio', 'base64').toString(), '*'.repeat(2)); |
| assert.strictEqual(Buffer.from('KioqKg', 'base64').toString(), '*'.repeat(4)); |
| assert.strictEqual(Buffer.from('KioqKio', 'base64').toString(), '*'.repeat(5)); |
| assert.strictEqual(Buffer.from('KioqKioqKg', 'base64').toString(), |
| '*'.repeat(7)); |
| assert.strictEqual(Buffer.from('KioqKioqKio', 'base64').toString(), |
| '*'.repeat(8)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKg', 'base64').toString(), |
| '*'.repeat(10)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKio', 'base64').toString(), |
| '*'.repeat(11)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKioqKg', 'base64').toString(), |
| '*'.repeat(13)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKioqKio', 'base64').toString(), |
| '*'.repeat(14)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKioqKioqKg', 'base64').toString(), |
| '*'.repeat(16)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKioqKioqKio', 'base64').toString(), |
| '*'.repeat(17)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKioqKioqKioqKg', |
| 'base64').toString(), |
| '*'.repeat(19)); |
| assert.strictEqual(Buffer.from('KioqKioqKioqKioqKioqKioqKio', |
| 'base64').toString(), |
| '*'.repeat(20)); |
| |
| // handle padding graciously, multiple-of-4 or not |
| assert.strictEqual( |
| Buffer.from('72INjkR5fchcxk9+VgdGPFJDxUBFR5/rMFsghgxADiw==', 'base64').length, |
| 32 |
| ); |
| assert.strictEqual( |
| Buffer.from('72INjkR5fchcxk9+VgdGPFJDxUBFR5/rMFsghgxADiw=', 'base64').length, |
| 32 |
| ); |
| assert.strictEqual( |
| Buffer.from('72INjkR5fchcxk9+VgdGPFJDxUBFR5/rMFsghgxADiw', 'base64').length, |
| 32 |
| ); |
| assert.strictEqual( |
| Buffer.from('w69jACy6BgZmaFvv96HG6MYksWytuZu3T1FvGnulPg==', 'base64').length, |
| 31 |
| ); |
| assert.strictEqual( |
| Buffer.from('w69jACy6BgZmaFvv96HG6MYksWytuZu3T1FvGnulPg=', 'base64').length, |
| 31 |
| ); |
| assert.strictEqual( |
| Buffer.from('w69jACy6BgZmaFvv96HG6MYksWytuZu3T1FvGnulPg', 'base64').length, |
| 31 |
| ); |
| |
| { |
| // This string encodes single '.' character in UTF-16 |
| const dot = Buffer.from('//4uAA==', 'base64'); |
| assert.strictEqual(dot[0], 0xff); |
| assert.strictEqual(dot[1], 0xfe); |
| assert.strictEqual(dot[2], 0x2e); |
| assert.strictEqual(dot[3], 0x00); |
| assert.strictEqual(dot.toString('base64'), '//4uAA=='); |
| } |
| |
| { |
| // Writing base64 at a position > 0 should not mangle the result. |
| // |
| // https://github.com/joyent/node/issues/402 |
| const segments = ['TWFkbmVzcz8h', 'IFRoaXM=', 'IGlz', 'IG5vZGUuanMh']; |
| const b = Buffer.allocUnsafe(64); |
| let pos = 0; |
| |
| for (let i = 0; i < segments.length; ++i) { |
| pos += b.write(segments[i], pos, 'base64'); |
| } |
| assert.strictEqual(b.toString('latin1', 0, pos), |
| 'Madness?! This is node.js!'); |
| } |
| |
| // Regression test for https://github.com/nodejs/node/issues/3496. |
| assert.strictEqual(Buffer.from('=bad'.repeat(1e4), 'base64').length, 0); |
| |
| // Regression test for https://github.com/nodejs/node/issues/11987. |
| assert.deepStrictEqual(Buffer.from('w0 ', 'base64'), |
| Buffer.from('w0', 'base64')); |
| |
| // Regression test for https://github.com/nodejs/node/issues/13657. |
| assert.deepStrictEqual(Buffer.from(' YWJvcnVtLg', 'base64'), |
| Buffer.from('YWJvcnVtLg', 'base64')); |
| |
| { |
| // Creating buffers larger than pool size. |
| const l = Buffer.poolSize + 5; |
| const s = 'h'.repeat(l); |
| const b = Buffer.from(s); |
| |
| for (let i = 0; i < l; i++) { |
| assert.strictEqual('h'.charCodeAt(0), b[i]); |
| } |
| |
| const sb = b.toString(); |
| assert.strictEqual(sb.length, s.length); |
| assert.strictEqual(sb, s); |
| } |
| |
| { |
| // test hex toString |
| const hexb = Buffer.allocUnsafe(256); |
| for (let i = 0; i < 256; i++) { |
| hexb[i] = i; |
| } |
| const hexStr = hexb.toString('hex'); |
| assert.strictEqual(hexStr, |
| '000102030405060708090a0b0c0d0e0f' + |
| '101112131415161718191a1b1c1d1e1f' + |
| '202122232425262728292a2b2c2d2e2f' + |
| '303132333435363738393a3b3c3d3e3f' + |
| '404142434445464748494a4b4c4d4e4f' + |
| '505152535455565758595a5b5c5d5e5f' + |
| '606162636465666768696a6b6c6d6e6f' + |
| '707172737475767778797a7b7c7d7e7f' + |
| '808182838485868788898a8b8c8d8e8f' + |
| '909192939495969798999a9b9c9d9e9f' + |
| 'a0a1a2a3a4a5a6a7a8a9aaabacadaeaf' + |
| 'b0b1b2b3b4b5b6b7b8b9babbbcbdbebf' + |
| 'c0c1c2c3c4c5c6c7c8c9cacbcccdcecf' + |
| 'd0d1d2d3d4d5d6d7d8d9dadbdcdddedf' + |
| 'e0e1e2e3e4e5e6e7e8e9eaebecedeeef' + |
| 'f0f1f2f3f4f5f6f7f8f9fafbfcfdfeff'); |
| |
| const hexb2 = Buffer.from(hexStr, 'hex'); |
| for (let i = 0; i < 256; i++) { |
| assert.strictEqual(hexb2[i], hexb[i]); |
| } |
| } |
| |
| // Test single hex character is discarded. |
| assert.strictEqual(Buffer.from('A', 'hex').length, 0); |
| |
| // Test that if a trailing character is discarded, rest of string is processed. |
| assert.deepStrictEqual(Buffer.from('Abx', 'hex'), Buffer.from('Ab', 'hex')); |
| |
| // Test single base64 char encodes as 0. |
| assert.strictEqual(Buffer.from('A', 'base64').length, 0); |
| |
| |
| { |
| // test an invalid slice end. |
| const b = Buffer.from([1, 2, 3, 4, 5]); |
| const b2 = b.toString('hex', 1, 10000); |
| const b3 = b.toString('hex', 1, 5); |
| const b4 = b.toString('hex', 1); |
| assert.strictEqual(b2, b3); |
| assert.strictEqual(b2, b4); |
| } |
| |
| function buildBuffer(data) { |
| if (Array.isArray(data)) { |
| const buffer = Buffer.allocUnsafe(data.length); |
| data.forEach((v, k) => buffer[k] = v); |
| return buffer; |
| } |
| return null; |
| } |
| |
| const x = buildBuffer([0x81, 0xa3, 0x66, 0x6f, 0x6f, 0xa3, 0x62, 0x61, 0x72]); |
| |
| assert.strictEqual('<Buffer 81 a3 66 6f 6f a3 62 61 72>', x.inspect()); |
| |
| { |
| const z = x.slice(4); |
| assert.strictEqual(5, z.length); |
| assert.strictEqual(0x6f, z[0]); |
| assert.strictEqual(0xa3, z[1]); |
| assert.strictEqual(0x62, z[2]); |
| assert.strictEqual(0x61, z[3]); |
| assert.strictEqual(0x72, z[4]); |
| } |
| |
| { |
| const z = x.slice(0); |
| assert.strictEqual(z.length, x.length); |
| } |
| |
| { |
| const z = x.slice(0, 4); |
| assert.strictEqual(4, z.length); |
| assert.strictEqual(0x81, z[0]); |
| assert.strictEqual(0xa3, z[1]); |
| } |
| |
| { |
| const z = x.slice(0, 9); |
| assert.strictEqual(9, z.length); |
| } |
| |
| { |
| const z = x.slice(1, 4); |
| assert.strictEqual(3, z.length); |
| assert.strictEqual(0xa3, z[0]); |
| } |
| |
| { |
| const z = x.slice(2, 4); |
| assert.strictEqual(2, z.length); |
| assert.strictEqual(0x66, z[0]); |
| assert.strictEqual(0x6f, z[1]); |
| } |
| |
| ['ucs2', 'ucs-2', 'utf16le', 'utf-16le'].forEach((encoding) => { |
| const b = Buffer.allocUnsafe(10); |
| b.write('あいうえお', encoding); |
| assert.strictEqual(b.toString(encoding), 'あいうえお'); |
| }); |
| |
| ['ucs2', 'ucs-2', 'utf16le', 'utf-16le'].forEach((encoding) => { |
| const b = Buffer.allocUnsafe(11); |
| b.write('あいうえお', 1, encoding); |
| assert.strictEqual(b.toString(encoding, 1), 'あいうえお'); |
| }); |
| |
| { |
| // latin1 encoding should write only one byte per character. |
| const b = Buffer.from([0xde, 0xad, 0xbe, 0xef]); |
| let s = String.fromCharCode(0xffff); |
| b.write(s, 0, 'latin1'); |
| assert.strictEqual(0xff, b[0]); |
| assert.strictEqual(0xad, b[1]); |
| assert.strictEqual(0xbe, b[2]); |
| assert.strictEqual(0xef, b[3]); |
| s = String.fromCharCode(0xaaee); |
| b.write(s, 0, 'latin1'); |
| assert.strictEqual(0xee, b[0]); |
| assert.strictEqual(0xad, b[1]); |
| assert.strictEqual(0xbe, b[2]); |
| assert.strictEqual(0xef, b[3]); |
| } |
| |
| { |
| // Binary encoding should write only one byte per character. |
| const b = Buffer.from([0xde, 0xad, 0xbe, 0xef]); |
| let s = String.fromCharCode(0xffff); |
| b.write(s, 0, 'latin1'); |
| assert.strictEqual(0xff, b[0]); |
| assert.strictEqual(0xad, b[1]); |
| assert.strictEqual(0xbe, b[2]); |
| assert.strictEqual(0xef, b[3]); |
| s = String.fromCharCode(0xaaee); |
| b.write(s, 0, 'latin1'); |
| assert.strictEqual(0xee, b[0]); |
| assert.strictEqual(0xad, b[1]); |
| assert.strictEqual(0xbe, b[2]); |
| assert.strictEqual(0xef, b[3]); |
| } |
| |
| { |
| // https://github.com/nodejs/node-v0.x-archive/pull/1210 |
| // Test UTF-8 string includes null character |
| let buf = Buffer.from('\0'); |
| assert.strictEqual(buf.length, 1); |
| buf = Buffer.from('\0\0'); |
| assert.strictEqual(buf.length, 2); |
| } |
| |
| { |
| const buf = Buffer.allocUnsafe(2); |
| assert.strictEqual(buf.write(''), 0); //0bytes |
| assert.strictEqual(buf.write('\0'), 1); // 1byte (v8 adds null terminator) |
| assert.strictEqual(buf.write('a\0'), 2); // 1byte * 2 |
| assert.strictEqual(buf.write('あ'), 0); // 3bytes |
| assert.strictEqual(buf.write('\0あ'), 1); // 1byte + 3bytes |
| assert.strictEqual(buf.write('\0\0あ'), 2); // 1byte * 2 + 3bytes |
| } |
| |
| { |
| const buf = Buffer.allocUnsafe(10); |
| assert.strictEqual(buf.write('あいう'), 9); // 3bytes * 3 (v8 adds null term.) |
| assert.strictEqual(buf.write('あいう\0'), 10); // 3bytes * 3 + 1byte |
| } |
| |
| { |
| // https://github.com/nodejs/node-v0.x-archive/issues/243 |
| // Test write() with maxLength |
| const buf = Buffer.allocUnsafe(4); |
| buf.fill(0xFF); |
| assert.strictEqual(buf.write('abcd', 1, 2, 'utf8'), 2); |
| assert.strictEqual(buf[0], 0xFF); |
| assert.strictEqual(buf[1], 0x61); |
| assert.strictEqual(buf[2], 0x62); |
| assert.strictEqual(buf[3], 0xFF); |
| |
| buf.fill(0xFF); |
| assert.strictEqual(buf.write('abcd', 1, 4), 3); |
| assert.strictEqual(buf[0], 0xFF); |
| assert.strictEqual(buf[1], 0x61); |
| assert.strictEqual(buf[2], 0x62); |
| assert.strictEqual(buf[3], 0x63); |
| |
| buf.fill(0xFF); |
| assert.strictEqual(buf.write('abcd', 1, 2, 'utf8'), 2); |
| assert.strictEqual(buf[0], 0xFF); |
| assert.strictEqual(buf[1], 0x61); |
| assert.strictEqual(buf[2], 0x62); |
| assert.strictEqual(buf[3], 0xFF); |
| |
| buf.fill(0xFF); |
| assert.strictEqual(buf.write('abcdef', 1, 2, 'hex'), 2); |
| assert.strictEqual(buf[0], 0xFF); |
| assert.strictEqual(buf[1], 0xAB); |
| assert.strictEqual(buf[2], 0xCD); |
| assert.strictEqual(buf[3], 0xFF); |
| |
| ['ucs2', 'ucs-2', 'utf16le', 'utf-16le'].forEach((encoding) => { |
| buf.fill(0xFF); |
| assert.strictEqual(buf.write('abcd', 0, 2, encoding), 2); |
| assert.strictEqual(buf[0], 0x61); |
| assert.strictEqual(buf[1], 0x00); |
| assert.strictEqual(buf[2], 0xFF); |
| assert.strictEqual(buf[3], 0xFF); |
| }); |
| } |
| |
| { |
| // test offset returns are correct |
| const b = Buffer.allocUnsafe(16); |
| assert.strictEqual(4, b.writeUInt32LE(0, 0)); |
| assert.strictEqual(6, b.writeUInt16LE(0, 4)); |
| assert.strictEqual(7, b.writeUInt8(0, 6)); |
| assert.strictEqual(8, b.writeInt8(0, 7)); |
| assert.strictEqual(16, b.writeDoubleLE(0, 8)); |
| } |
| |
| { |
| // test unmatched surrogates not producing invalid utf8 output |
| // ef bf bd = utf-8 representation of unicode replacement character |
| // see https://codereview.chromium.org/121173009/ |
| const buf = Buffer.from('ab\ud800cd', 'utf8'); |
| assert.strictEqual(buf[0], 0x61); |
| assert.strictEqual(buf[1], 0x62); |
| assert.strictEqual(buf[2], 0xef); |
| assert.strictEqual(buf[3], 0xbf); |
| assert.strictEqual(buf[4], 0xbd); |
| assert.strictEqual(buf[5], 0x63); |
| assert.strictEqual(buf[6], 0x64); |
| } |
| |
| { |
| // test for buffer overrun |
| const buf = Buffer.from([0, 0, 0, 0, 0]); // length: 5 |
| const sub = buf.slice(0, 4); // length: 4 |
| assert.strictEqual(sub.write('12345', 'latin1'), 4); |
| assert.strictEqual(buf[4], 0); |
| assert.strictEqual(sub.write('12345', 'binary'), 4); |
| assert.strictEqual(buf[4], 0); |
| } |
| |
| { |
| // test alloc with fill option |
| const buf = Buffer.alloc(5, '800A', 'hex'); |
| assert.strictEqual(buf[0], 128); |
| assert.strictEqual(buf[1], 10); |
| assert.strictEqual(buf[2], 128); |
| assert.strictEqual(buf[3], 10); |
| assert.strictEqual(buf[4], 128); |
| } |
| |
| |
| // Check for fractional length args, junk length args, etc. |
| // https://github.com/joyent/node/issues/1758 |
| |
| // Call .fill() first, stops valgrind warning about uninitialized memory reads. |
| Buffer.allocUnsafe(3.3).fill().toString(); |
| // throws bad argument error in commit 43cb4ec |
| Buffer.alloc(3.3).fill().toString(); |
| assert.strictEqual(Buffer.allocUnsafe(NaN).length, 0); |
| assert.strictEqual(Buffer.allocUnsafe(3.3).length, 3); |
| assert.strictEqual(Buffer.from({ length: 3.3 }).length, 3); |
| assert.strictEqual(Buffer.from({ length: 'BAM' }).length, 0); |
| |
| // Make sure that strings are not coerced to numbers. |
| assert.strictEqual(Buffer.from('99').length, 2); |
| assert.strictEqual(Buffer.from('13.37').length, 5); |
| |
| // Ensure that the length argument is respected. |
| ['ascii', 'utf8', 'hex', 'base64', 'latin1', 'binary'].forEach((enc) => { |
| assert.strictEqual(Buffer.allocUnsafe(1).write('aaaaaa', 0, 1, enc), 1); |
| }); |
| |
| { |
| // Regression test, guard against buffer overrun in the base64 decoder. |
| const a = Buffer.allocUnsafe(3); |
| const b = Buffer.from('xxx'); |
| a.write('aaaaaaaa', 'base64'); |
| assert.strictEqual(b.toString(), 'xxx'); |
| } |
| |
| // issue GH-3416 |
| Buffer.from(Buffer.allocUnsafe(0), 0, 0); |
| |
| // issue GH-5587 |
| assert.throws(() => Buffer.alloc(8).writeFloatLE(0, 5), RangeError); |
| assert.throws(() => Buffer.alloc(16).writeDoubleLE(0, 9), RangeError); |
| |
| // attempt to overflow buffers, similar to previous bug in array buffers |
| assert.throws(() => Buffer.allocUnsafe(8).writeFloatLE(0.0, 0xffffffff), |
| RangeError); |
| assert.throws(() => Buffer.allocUnsafe(8).writeFloatLE(0.0, 0xffffffff), |
| RangeError); |
| |
| |
| // ensure negative values can't get past offset |
| assert.throws(() => Buffer.allocUnsafe(8).writeFloatLE(0.0, -1), RangeError); |
| assert.throws(() => Buffer.allocUnsafe(8).writeFloatLE(0.0, -1), RangeError); |
| |
| |
| // test for common write(U)IntLE/BE |
| { |
| let buf = Buffer.allocUnsafe(3); |
| buf.writeUIntLE(0x123456, 0, 3); |
| assert.deepStrictEqual(buf.toJSON().data, [0x56, 0x34, 0x12]); |
| assert.strictEqual(buf.readUIntLE(0, 3), 0x123456); |
| |
| buf.fill(0xFF); |
| buf.writeUIntBE(0x123456, 0, 3); |
| assert.deepStrictEqual(buf.toJSON().data, [0x12, 0x34, 0x56]); |
| assert.strictEqual(buf.readUIntBE(0, 3), 0x123456); |
| |
| buf.fill(0xFF); |
| buf.writeIntLE(0x123456, 0, 3); |
| assert.deepStrictEqual(buf.toJSON().data, [0x56, 0x34, 0x12]); |
| assert.strictEqual(buf.readIntLE(0, 3), 0x123456); |
| |
| buf.fill(0xFF); |
| buf.writeIntBE(0x123456, 0, 3); |
| assert.deepStrictEqual(buf.toJSON().data, [0x12, 0x34, 0x56]); |
| assert.strictEqual(buf.readIntBE(0, 3), 0x123456); |
| |
| buf.fill(0xFF); |
| buf.writeIntLE(-0x123456, 0, 3); |
| assert.deepStrictEqual(buf.toJSON().data, [0xaa, 0xcb, 0xed]); |
| assert.strictEqual(buf.readIntLE(0, 3), -0x123456); |
| |
| buf.fill(0xFF); |
| buf.writeIntBE(-0x123456, 0, 3); |
| assert.deepStrictEqual(buf.toJSON().data, [0xed, 0xcb, 0xaa]); |
| assert.strictEqual(buf.readIntBE(0, 3), -0x123456); |
| |
| buf.fill(0xFF); |
| buf.writeIntLE(-0x123400, 0, 3); |
| assert.deepStrictEqual(buf.toJSON().data, [0x00, 0xcc, 0xed]); |
| assert.strictEqual(buf.readIntLE(0, 3), -0x123400); |
| |
| buf.fill(0xFF); |
| buf.writeIntBE(-0x123400, 0, 3); |
| assert.deepStrictEqual(buf.toJSON().data, [0xed, 0xcc, 0x00]); |
| assert.strictEqual(buf.readIntBE(0, 3), -0x123400); |
| |
| buf.fill(0xFF); |
| buf.writeIntLE(-0x120000, 0, 3); |
| assert.deepStrictEqual(buf.toJSON().data, [0x00, 0x00, 0xee]); |
| assert.strictEqual(buf.readIntLE(0, 3), -0x120000); |
| |
| buf.fill(0xFF); |
| buf.writeIntBE(-0x120000, 0, 3); |
| assert.deepStrictEqual(buf.toJSON().data, [0xee, 0x00, 0x00]); |
| assert.strictEqual(buf.readIntBE(0, 3), -0x120000); |
| |
| buf = Buffer.allocUnsafe(5); |
| buf.writeUIntLE(0x1234567890, 0, 5); |
| assert.deepStrictEqual(buf.toJSON().data, [0x90, 0x78, 0x56, 0x34, 0x12]); |
| assert.strictEqual(buf.readUIntLE(0, 5), 0x1234567890); |
| |
| buf.fill(0xFF); |
| buf.writeUIntBE(0x1234567890, 0, 5); |
| assert.deepStrictEqual(buf.toJSON().data, [0x12, 0x34, 0x56, 0x78, 0x90]); |
| assert.strictEqual(buf.readUIntBE(0, 5), 0x1234567890); |
| |
| buf.fill(0xFF); |
| buf.writeIntLE(0x1234567890, 0, 5); |
| assert.deepStrictEqual(buf.toJSON().data, [0x90, 0x78, 0x56, 0x34, 0x12]); |
| assert.strictEqual(buf.readIntLE(0, 5), 0x1234567890); |
| |
| buf.fill(0xFF); |
| buf.writeIntBE(0x1234567890, 0, 5); |
| assert.deepStrictEqual(buf.toJSON().data, [0x12, 0x34, 0x56, 0x78, 0x90]); |
| assert.strictEqual(buf.readIntBE(0, 5), 0x1234567890); |
| |
| buf.fill(0xFF); |
| buf.writeIntLE(-0x1234567890, 0, 5); |
| assert.deepStrictEqual(buf.toJSON().data, [0x70, 0x87, 0xa9, 0xcb, 0xed]); |
| assert.strictEqual(buf.readIntLE(0, 5), -0x1234567890); |
| |
| buf.fill(0xFF); |
| buf.writeIntBE(-0x1234567890, 0, 5); |
| assert.deepStrictEqual(buf.toJSON().data, [0xed, 0xcb, 0xa9, 0x87, 0x70]); |
| assert.strictEqual(buf.readIntBE(0, 5), -0x1234567890); |
| |
| buf.fill(0xFF); |
| buf.writeIntLE(-0x0012000000, 0, 5); |
| assert.deepStrictEqual(buf.toJSON().data, [0x00, 0x00, 0x00, 0xee, 0xff]); |
| assert.strictEqual(buf.readIntLE(0, 5), -0x0012000000); |
| |
| buf.fill(0xFF); |
| buf.writeIntBE(-0x0012000000, 0, 5); |
| assert.deepStrictEqual(buf.toJSON().data, [0xff, 0xee, 0x00, 0x00, 0x00]); |
| assert.strictEqual(buf.readIntBE(0, 5), -0x0012000000); |
| } |
| |
| // Regression test for https://github.com/nodejs/node-v0.x-archive/issues/5482: |
| // should throw but not assert in C++ land. |
| common.expectsError( |
| () => Buffer.from('', 'buffer'), |
| { |
| code: 'ERR_UNKNOWN_ENCODING', |
| type: TypeError, |
| message: 'Unknown encoding: buffer' |
| } |
| ); |
| |
| // Regression test for https://github.com/nodejs/node-v0.x-archive/issues/6111. |
| // Constructing a buffer from another buffer should a) work, and b) not corrupt |
| // the source buffer. |
| { |
| const a = [...Array(128).keys()]; // [0, 1, 2, 3, ... 126, 127] |
| const b = Buffer.from(a); |
| const c = Buffer.from(b); |
| assert.strictEqual(b.length, a.length); |
| assert.strictEqual(c.length, a.length); |
| for (let i = 0, k = a.length; i < k; ++i) { |
| assert.strictEqual(a[i], i); |
| assert.strictEqual(b[i], i); |
| assert.strictEqual(c[i], i); |
| } |
| } |
| |
| if (common.hasCrypto) { // eslint-disable-line crypto-check |
| // Test truncation after decode |
| const crypto = require('crypto'); |
| |
| const b1 = Buffer.from('YW55=======', 'base64'); |
| const b2 = Buffer.from('YW55', 'base64'); |
| |
| assert.strictEqual( |
| crypto.createHash('sha1').update(b1).digest('hex'), |
| crypto.createHash('sha1').update(b2).digest('hex') |
| ); |
| } else { |
| common.printSkipMessage('missing crypto'); |
| } |
| |
| const ps = Buffer.poolSize; |
| Buffer.poolSize = 0; |
| assert(Buffer.allocUnsafe(1).parent instanceof ArrayBuffer); |
| Buffer.poolSize = ps; |
| |
| // Test Buffer.copy() segfault |
| assert.throws(() => Buffer.allocUnsafe(10).copy(), |
| /TypeError: argument should be a Buffer/); |
| |
| const regErrorMsg = |
| new RegExp('The first argument must be one of type string, Buffer, ' + |
| 'ArrayBuffer, Array, or Array-like Object\\.'); |
| |
| assert.throws(() => Buffer.from(), regErrorMsg); |
| assert.throws(() => Buffer.from(null), regErrorMsg); |
| |
| // Test prototype getters don't throw |
| assert.strictEqual(Buffer.prototype.parent, undefined); |
| assert.strictEqual(Buffer.prototype.offset, undefined); |
| assert.strictEqual(SlowBuffer.prototype.parent, undefined); |
| assert.strictEqual(SlowBuffer.prototype.offset, undefined); |
| |
| |
| { |
| // Test that large negative Buffer length inputs don't affect the pool offset. |
| // Use the fromArrayLike() variant here because it's more lenient |
| // about its input and passes the length directly to allocate(). |
| assert.deepStrictEqual(Buffer.from({ length: -Buffer.poolSize }), |
| Buffer.from('')); |
| assert.deepStrictEqual(Buffer.from({ length: -100 }), |
| Buffer.from('')); |
| |
| // Check pool offset after that by trying to write string into the pool. |
| assert.doesNotThrow(() => Buffer.from('abc')); |
| } |
| |
| |
| // Test that ParseArrayIndex handles full uint32 |
| { |
| const errMsg = common.expectsError({ |
| code: 'ERR_BUFFER_OUT_OF_BOUNDS', |
| type: RangeError, |
| message: '"offset" is outside of buffer bounds' |
| }); |
| assert.throws(() => Buffer.from(new ArrayBuffer(0), -1 >>> 0), errMsg); |
| } |
| |
| // ParseArrayIndex() should reject values that don't fit in a 32 bits size_t. |
| common.expectsError(() => { |
| const a = Buffer.alloc(1); |
| const b = Buffer.alloc(1); |
| a.copy(b, 0, 0x100000000, 0x100000001); |
| }, { code: undefined, type: RangeError, message: 'Index out of range' }); |
| |
| // Unpooled buffer (replaces SlowBuffer) |
| { |
| const ubuf = Buffer.allocUnsafeSlow(10); |
| assert(ubuf); |
| assert(ubuf.buffer); |
| assert.strictEqual(ubuf.buffer.byteLength, 10); |
| } |
| |
| // Regression test |
| assert.doesNotThrow(() => Buffer.from(new ArrayBuffer())); |
| |
| // Test that ArrayBuffer from a different context is detected correctly |
| const arrayBuf = vm.runInNewContext('new ArrayBuffer()'); |
| assert.doesNotThrow(() => Buffer.from(arrayBuf)); |
| assert.doesNotThrow(() => Buffer.from({ buffer: arrayBuf })); |
| |
| assert.throws(() => Buffer.alloc({ valueOf: () => 1 }), |
| /"size" argument must be of type number/); |
| assert.throws(() => Buffer.alloc({ valueOf: () => -1 }), |
| /"size" argument must be of type number/); |
| |
| assert.strictEqual(Buffer.prototype.toLocaleString, Buffer.prototype.toString); |
| { |
| const buf = Buffer.from('test'); |
| assert.strictEqual(buf.toLocaleString(), buf.toString()); |
| } |
| |
| common.expectsError(() => { |
| Buffer.alloc(0x1000, 'This is not correctly encoded', 'hex'); |
| }, { |
| code: 'ERR_INVALID_ARG_VALUE', |
| type: TypeError |
| }); |
| |
| common.expectsError(() => { |
| Buffer.alloc(0x1000, 'c', 'hex'); |
| }, { |
| code: 'ERR_INVALID_ARG_VALUE', |
| type: TypeError |
| }); |
| |
| common.expectsError(() => { |
| Buffer.alloc(1, Buffer.alloc(0)); |
| }, { |
| code: 'ERR_INVALID_ARG_VALUE', |
| type: TypeError |
| }); |
| |