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							783 lines
						
					
					
						
							19 KiB
						
					
					
				
			
		
		
	
	
							783 lines
						
					
					
						
							19 KiB
						
					
					
				'use strict'
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var tape       = require('tape')
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  , crypto     = require('crypto')
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  , fs         = require('fs')
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  , hash       = require('hash_file')
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  , BufferList = require('../')
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  , Buffer     = require('safe-buffer').Buffer
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  , encodings  =
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      ('hex utf8 utf-8 ascii binary base64'
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          + (process.browser ? '' : ' ucs2 ucs-2 utf16le utf-16le')).split(' ')
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// run the indexOf tests
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require('./indexOf')
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tape('single bytes from single buffer', function (t) {
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  var bl = new BufferList()
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  bl.append(Buffer.from('abcd'))
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  t.equal(bl.length, 4)
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  t.equal(bl.get(-1), undefined)
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  t.equal(bl.get(0), 97)
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  t.equal(bl.get(1), 98)
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  t.equal(bl.get(2), 99)
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  t.equal(bl.get(3), 100)
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  t.equal(bl.get(4), undefined)
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  t.end()
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})
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tape('single bytes from multiple buffers', function (t) {
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  var bl = new BufferList()
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  bl.append(Buffer.from('abcd'))
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  bl.append(Buffer.from('efg'))
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  bl.append(Buffer.from('hi'))
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  bl.append(Buffer.from('j'))
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  t.equal(bl.length, 10)
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  t.equal(bl.get(0), 97)
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  t.equal(bl.get(1), 98)
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  t.equal(bl.get(2), 99)
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  t.equal(bl.get(3), 100)
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  t.equal(bl.get(4), 101)
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  t.equal(bl.get(5), 102)
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  t.equal(bl.get(6), 103)
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  t.equal(bl.get(7), 104)
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  t.equal(bl.get(8), 105)
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  t.equal(bl.get(9), 106)
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  t.end()
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})
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tape('multi bytes from single buffer', function (t) {
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  var bl = new BufferList()
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  bl.append(Buffer.from('abcd'))
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  t.equal(bl.length, 4)
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  t.equal(bl.slice(0, 4).toString('ascii'), 'abcd')
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  t.equal(bl.slice(0, 3).toString('ascii'), 'abc')
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  t.equal(bl.slice(1, 4).toString('ascii'), 'bcd')
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  t.equal(bl.slice(-4, -1).toString('ascii'), 'abc')
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  t.end()
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})
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tape('multi bytes from single buffer (negative indexes)', function (t) {
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  var bl = new BufferList()
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  bl.append(Buffer.from('buffer'))
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  t.equal(bl.length, 6)
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  t.equal(bl.slice(-6, -1).toString('ascii'), 'buffe')
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  t.equal(bl.slice(-6, -2).toString('ascii'), 'buff')
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  t.equal(bl.slice(-5, -2).toString('ascii'), 'uff')
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  t.end()
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})
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tape('multiple bytes from multiple buffers', function (t) {
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  var bl = new BufferList()
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  bl.append(Buffer.from('abcd'))
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  bl.append(Buffer.from('efg'))
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  bl.append(Buffer.from('hi'))
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  bl.append(Buffer.from('j'))
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  t.equal(bl.length, 10)
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  t.equal(bl.slice(0, 10).toString('ascii'), 'abcdefghij')
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  t.equal(bl.slice(3, 10).toString('ascii'), 'defghij')
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  t.equal(bl.slice(3, 6).toString('ascii'), 'def')
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  t.equal(bl.slice(3, 8).toString('ascii'), 'defgh')
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  t.equal(bl.slice(5, 10).toString('ascii'), 'fghij')
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  t.equal(bl.slice(-7, -4).toString('ascii'), 'def')
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  t.end()
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})
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tape('multiple bytes from multiple buffer lists', function (t) {
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  var bl = new BufferList()
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  bl.append(new BufferList([ Buffer.from('abcd'), Buffer.from('efg') ]))
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  bl.append(new BufferList([ Buffer.from('hi'), Buffer.from('j') ]))
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  t.equal(bl.length, 10)
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  t.equal(bl.slice(0, 10).toString('ascii'), 'abcdefghij')
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  t.equal(bl.slice(3, 10).toString('ascii'), 'defghij')
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  t.equal(bl.slice(3, 6).toString('ascii'), 'def')
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  t.equal(bl.slice(3, 8).toString('ascii'), 'defgh')
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  t.equal(bl.slice(5, 10).toString('ascii'), 'fghij')
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  t.end()
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})
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// same data as previous test, just using nested constructors
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tape('multiple bytes from crazy nested buffer lists', function (t) {
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  var bl = new BufferList()
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  bl.append(new BufferList([
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      new BufferList([
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          new BufferList(Buffer.from('abc'))
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        , Buffer.from('d')
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        , new BufferList(Buffer.from('efg'))
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      ])
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    , new BufferList([ Buffer.from('hi') ])
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    , new BufferList(Buffer.from('j'))
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  ]))
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  t.equal(bl.length, 10)
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  t.equal(bl.slice(0, 10).toString('ascii'), 'abcdefghij')
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  t.equal(bl.slice(3, 10).toString('ascii'), 'defghij')
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  t.equal(bl.slice(3, 6).toString('ascii'), 'def')
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  t.equal(bl.slice(3, 8).toString('ascii'), 'defgh')
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  t.equal(bl.slice(5, 10).toString('ascii'), 'fghij')
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  t.end()
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})
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tape('append accepts arrays of Buffers', function (t) {
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  var bl = new BufferList()
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  bl.append(Buffer.from('abc'))
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  bl.append([ Buffer.from('def') ])
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  bl.append([ Buffer.from('ghi'), Buffer.from('jkl') ])
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  bl.append([ Buffer.from('mnop'), Buffer.from('qrstu'), Buffer.from('vwxyz') ])
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  t.equal(bl.length, 26)
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  t.equal(bl.slice().toString('ascii'), 'abcdefghijklmnopqrstuvwxyz')
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  t.end()
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})
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tape('append accepts arrays of BufferLists', function (t) {
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  var bl = new BufferList()
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  bl.append(Buffer.from('abc'))
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  bl.append([ new BufferList('def') ])
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  bl.append(new BufferList([ Buffer.from('ghi'), new BufferList('jkl') ]))
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  bl.append([ Buffer.from('mnop'), new BufferList([ Buffer.from('qrstu'), Buffer.from('vwxyz') ]) ])
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  t.equal(bl.length, 26)
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  t.equal(bl.slice().toString('ascii'), 'abcdefghijklmnopqrstuvwxyz')
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  t.end()
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})
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tape('append chainable', function (t) {
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  var bl = new BufferList()
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  t.ok(bl.append(Buffer.from('abcd')) === bl)
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  t.ok(bl.append([ Buffer.from('abcd') ]) === bl)
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  t.ok(bl.append(new BufferList(Buffer.from('abcd'))) === bl)
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  t.ok(bl.append([ new BufferList(Buffer.from('abcd')) ]) === bl)
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  t.end()
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})
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tape('append chainable (test results)', function (t) {
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  var bl = new BufferList('abc')
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    .append([ new BufferList('def') ])
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    .append(new BufferList([ Buffer.from('ghi'), new BufferList('jkl') ]))
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    .append([ Buffer.from('mnop'), new BufferList([ Buffer.from('qrstu'), Buffer.from('vwxyz') ]) ])
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  t.equal(bl.length, 26)
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  t.equal(bl.slice().toString('ascii'), 'abcdefghijklmnopqrstuvwxyz')
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  t.end()
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})
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tape('consuming from multiple buffers', function (t) {
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  var bl = new BufferList()
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  bl.append(Buffer.from('abcd'))
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  bl.append(Buffer.from('efg'))
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  bl.append(Buffer.from('hi'))
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  bl.append(Buffer.from('j'))
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  t.equal(bl.length, 10)
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  t.equal(bl.slice(0, 10).toString('ascii'), 'abcdefghij')
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  bl.consume(3)
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  t.equal(bl.length, 7)
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  t.equal(bl.slice(0, 7).toString('ascii'), 'defghij')
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  bl.consume(2)
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  t.equal(bl.length, 5)
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  t.equal(bl.slice(0, 5).toString('ascii'), 'fghij')
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  bl.consume(1)
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  t.equal(bl.length, 4)
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  t.equal(bl.slice(0, 4).toString('ascii'), 'ghij')
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  bl.consume(1)
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  t.equal(bl.length, 3)
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  t.equal(bl.slice(0, 3).toString('ascii'), 'hij')
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  bl.consume(2)
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  t.equal(bl.length, 1)
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  t.equal(bl.slice(0, 1).toString('ascii'), 'j')
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  t.end()
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})
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tape('complete consumption', function (t) {
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  var bl = new BufferList()
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  bl.append(Buffer.from('a'))
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  bl.append(Buffer.from('b'))
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  bl.consume(2)
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  t.equal(bl.length, 0)
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  t.equal(bl._bufs.length, 0)
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  t.end()
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})
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tape('test readUInt8 / readInt8', function (t) {
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  var buf1 = Buffer.alloc(1)
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    , buf2 = Buffer.alloc(3)
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    , buf3 = Buffer.alloc(3)
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    , bl  = new BufferList()
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  buf2[1] = 0x3
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  buf2[2] = 0x4
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  buf3[0] = 0x23
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  buf3[1] = 0x42
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  bl.append(buf1)
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  bl.append(buf2)
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  bl.append(buf3)
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  t.equal(bl.readUInt8(2), 0x3)
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  t.equal(bl.readInt8(2), 0x3)
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  t.equal(bl.readUInt8(3), 0x4)
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  t.equal(bl.readInt8(3), 0x4)
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  t.equal(bl.readUInt8(4), 0x23)
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  t.equal(bl.readInt8(4), 0x23)
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  t.equal(bl.readUInt8(5), 0x42)
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  t.equal(bl.readInt8(5), 0x42)
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  t.end()
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})
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tape('test readUInt16LE / readUInt16BE / readInt16LE / readInt16BE', function (t) {
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  var buf1 = Buffer.alloc(1)
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    , buf2 = Buffer.alloc(3)
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    , buf3 = Buffer.alloc(3)
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    , bl   = new BufferList()
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  buf2[1] = 0x3
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  buf2[2] = 0x4
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  buf3[0] = 0x23
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  buf3[1] = 0x42
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  bl.append(buf1)
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  bl.append(buf2)
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  bl.append(buf3)
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  t.equal(bl.readUInt16BE(2), 0x0304)
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  t.equal(bl.readUInt16LE(2), 0x0403)
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  t.equal(bl.readInt16BE(2), 0x0304)
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  t.equal(bl.readInt16LE(2), 0x0403)
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  t.equal(bl.readUInt16BE(3), 0x0423)
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  t.equal(bl.readUInt16LE(3), 0x2304)
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  t.equal(bl.readInt16BE(3), 0x0423)
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  t.equal(bl.readInt16LE(3), 0x2304)
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  t.equal(bl.readUInt16BE(4), 0x2342)
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  t.equal(bl.readUInt16LE(4), 0x4223)
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  t.equal(bl.readInt16BE(4), 0x2342)
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  t.equal(bl.readInt16LE(4), 0x4223)
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  t.end()
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})
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tape('test readUInt32LE / readUInt32BE / readInt32LE / readInt32BE', function (t) {
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  var buf1 = Buffer.alloc(1)
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    , buf2 = Buffer.alloc(3)
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    , buf3 = Buffer.alloc(3)
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    , bl   = new BufferList()
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  buf2[1] = 0x3
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  buf2[2] = 0x4
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  buf3[0] = 0x23
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  buf3[1] = 0x42
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  bl.append(buf1)
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  bl.append(buf2)
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  bl.append(buf3)
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  t.equal(bl.readUInt32BE(2), 0x03042342)
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  t.equal(bl.readUInt32LE(2), 0x42230403)
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  t.equal(bl.readInt32BE(2), 0x03042342)
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  t.equal(bl.readInt32LE(2), 0x42230403)
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  t.end()
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})
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tape('test readUIntLE / readUIntBE / readIntLE / readIntBE', function (t) {
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  var buf1 = Buffer.alloc(1)
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    , buf2 = Buffer.alloc(3)
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    , buf3 = Buffer.alloc(3)
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    , bl   = new BufferList()
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  buf2[0] = 0x2
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  buf2[1] = 0x3
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  buf2[2] = 0x4
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  buf3[0] = 0x23
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  buf3[1] = 0x42
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  buf3[2] = 0x61
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  bl.append(buf1)
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  bl.append(buf2)
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  bl.append(buf3)
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  t.equal(bl.readUIntBE(1, 1), 0x02)
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  t.equal(bl.readUIntBE(1, 2), 0x0203)
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  t.equal(bl.readUIntBE(1, 3), 0x020304)
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  t.equal(bl.readUIntBE(1, 4), 0x02030423)
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  t.equal(bl.readUIntBE(1, 5), 0x0203042342)
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  t.equal(bl.readUIntBE(1, 6), 0x020304234261)
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  t.equal(bl.readUIntLE(1, 1), 0x02)
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  t.equal(bl.readUIntLE(1, 2), 0x0302)
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  t.equal(bl.readUIntLE(1, 3), 0x040302)
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  t.equal(bl.readUIntLE(1, 4), 0x23040302)
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  t.equal(bl.readUIntLE(1, 5), 0x4223040302)
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  t.equal(bl.readUIntLE(1, 6), 0x614223040302)
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  t.equal(bl.readIntBE(1, 1), 0x02)
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  t.equal(bl.readIntBE(1, 2), 0x0203)
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  t.equal(bl.readIntBE(1, 3), 0x020304)
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  t.equal(bl.readIntBE(1, 4), 0x02030423)
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  t.equal(bl.readIntBE(1, 5), 0x0203042342)
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  t.equal(bl.readIntBE(1, 6), 0x020304234261)
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  t.equal(bl.readIntLE(1, 1), 0x02)
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  t.equal(bl.readIntLE(1, 2), 0x0302)
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  t.equal(bl.readIntLE(1, 3), 0x040302)
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  t.equal(bl.readIntLE(1, 4), 0x23040302)
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  t.equal(bl.readIntLE(1, 5), 0x4223040302)
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  t.equal(bl.readIntLE(1, 6), 0x614223040302)
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  t.end()
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})
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tape('test readFloatLE / readFloatBE', function (t) {
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  var buf1 = Buffer.alloc(1)
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    , buf2 = Buffer.alloc(3)
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    , buf3 = Buffer.alloc(3)
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    , bl   = new BufferList()
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  buf2[1] = 0x00
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  buf2[2] = 0x00
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  buf3[0] = 0x80
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  buf3[1] = 0x3f
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  bl.append(buf1)
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  bl.append(buf2)
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  bl.append(buf3)
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  t.equal(bl.readFloatLE(2), 0x01)
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  t.end()
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})
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tape('test readDoubleLE / readDoubleBE', function (t) {
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  var buf1 = Buffer.alloc(1)
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    , buf2 = Buffer.alloc(3)
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    , buf3 = Buffer.alloc(10)
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    , bl   = new BufferList()
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  buf2[1] = 0x55
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  buf2[2] = 0x55
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  buf3[0] = 0x55
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  buf3[1] = 0x55
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  buf3[2] = 0x55
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  buf3[3] = 0x55
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  buf3[4] = 0xd5
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  buf3[5] = 0x3f
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  bl.append(buf1)
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  bl.append(buf2)
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  bl.append(buf3)
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  t.equal(bl.readDoubleLE(2), 0.3333333333333333)
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  t.end()
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})
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tape('test toString', function (t) {
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  var bl = new BufferList()
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  bl.append(Buffer.from('abcd'))
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  bl.append(Buffer.from('efg'))
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  bl.append(Buffer.from('hi'))
 | 
						|
  bl.append(Buffer.from('j'))
 | 
						|
 | 
						|
  t.equal(bl.toString('ascii', 0, 10), 'abcdefghij')
 | 
						|
  t.equal(bl.toString('ascii', 3, 10), 'defghij')
 | 
						|
  t.equal(bl.toString('ascii', 3, 6), 'def')
 | 
						|
  t.equal(bl.toString('ascii', 3, 8), 'defgh')
 | 
						|
  t.equal(bl.toString('ascii', 5, 10), 'fghij')
 | 
						|
 | 
						|
  t.end()
 | 
						|
})
 | 
						|
 | 
						|
tape('test toString encoding', function (t) {
 | 
						|
  var bl = new BufferList()
 | 
						|
    , b  = Buffer.from('abcdefghij\xff\x00')
 | 
						|
 | 
						|
  bl.append(Buffer.from('abcd'))
 | 
						|
  bl.append(Buffer.from('efg'))
 | 
						|
  bl.append(Buffer.from('hi'))
 | 
						|
  bl.append(Buffer.from('j'))
 | 
						|
  bl.append(Buffer.from('\xff\x00'))
 | 
						|
 | 
						|
  encodings.forEach(function (enc) {
 | 
						|
      t.equal(bl.toString(enc), b.toString(enc), enc)
 | 
						|
    })
 | 
						|
 | 
						|
  t.end()
 | 
						|
})
 | 
						|
 | 
						|
tape('uninitialized memory', function (t) {
 | 
						|
  const secret = crypto.randomBytes(256)
 | 
						|
  for (let i = 0; i < 1e6; i++) {
 | 
						|
    const clone = Buffer.from(secret)
 | 
						|
    const bl = new BufferList()
 | 
						|
    bl.append(Buffer.from('a'))
 | 
						|
    bl.consume(-1024)
 | 
						|
    const buf = bl.slice(1)
 | 
						|
    if (buf.indexOf(clone) !== -1) {
 | 
						|
      t.fail(`Match (at ${i})`)
 | 
						|
      break
 | 
						|
    }
 | 
						|
  }
 | 
						|
  t.end()
 | 
						|
})
 | 
						|
 | 
						|
!process.browser && tape('test stream', function (t) {
 | 
						|
  var random = crypto.randomBytes(65534)
 | 
						|
    , rndhash = hash(random, 'md5')
 | 
						|
    , md5sum = crypto.createHash('md5')
 | 
						|
    , bl     = new BufferList(function (err, buf) {
 | 
						|
        t.ok(Buffer.isBuffer(buf))
 | 
						|
        t.ok(err === null)
 | 
						|
        t.equal(rndhash, hash(bl.slice(), 'md5'))
 | 
						|
        t.equal(rndhash, hash(buf, 'md5'))
 | 
						|
 | 
						|
        bl.pipe(fs.createWriteStream('/tmp/bl_test_rnd_out.dat'))
 | 
						|
          .on('close', function () {
 | 
						|
            var s = fs.createReadStream('/tmp/bl_test_rnd_out.dat')
 | 
						|
            s.on('data', md5sum.update.bind(md5sum))
 | 
						|
            s.on('end', function() {
 | 
						|
              t.equal(rndhash, md5sum.digest('hex'), 'woohoo! correct hash!')
 | 
						|
              t.end()
 | 
						|
            })
 | 
						|
          })
 | 
						|
 | 
						|
      })
 | 
						|
 | 
						|
  fs.writeFileSync('/tmp/bl_test_rnd.dat', random)
 | 
						|
  fs.createReadStream('/tmp/bl_test_rnd.dat').pipe(bl)
 | 
						|
})
 | 
						|
 | 
						|
tape('instantiation with Buffer', function (t) {
 | 
						|
  var buf  = crypto.randomBytes(1024)
 | 
						|
    , buf2 = crypto.randomBytes(1024)
 | 
						|
    , b    = BufferList(buf)
 | 
						|
 | 
						|
  t.equal(buf.toString('hex'), b.slice().toString('hex'), 'same buffer')
 | 
						|
  b = BufferList([ buf, buf2 ])
 | 
						|
  t.equal(b.slice().toString('hex'), Buffer.concat([ buf, buf2 ]).toString('hex'), 'same buffer')
 | 
						|
  t.end()
 | 
						|
})
 | 
						|
 | 
						|
tape('test String appendage', function (t) {
 | 
						|
  var bl = new BufferList()
 | 
						|
    , b  = Buffer.from('abcdefghij\xff\x00')
 | 
						|
 | 
						|
  bl.append('abcd')
 | 
						|
  bl.append('efg')
 | 
						|
  bl.append('hi')
 | 
						|
  bl.append('j')
 | 
						|
  bl.append('\xff\x00')
 | 
						|
 | 
						|
  encodings.forEach(function (enc) {
 | 
						|
      t.equal(bl.toString(enc), b.toString(enc))
 | 
						|
    })
 | 
						|
 | 
						|
  t.end()
 | 
						|
})
 | 
						|
 | 
						|
tape('test Number appendage', function (t) {
 | 
						|
  var bl = new BufferList()
 | 
						|
    , b  = Buffer.from('1234567890')
 | 
						|
 | 
						|
  bl.append(1234)
 | 
						|
  bl.append(567)
 | 
						|
  bl.append(89)
 | 
						|
  bl.append(0)
 | 
						|
 | 
						|
  encodings.forEach(function (enc) {
 | 
						|
      t.equal(bl.toString(enc), b.toString(enc))
 | 
						|
    })
 | 
						|
 | 
						|
  t.end()
 | 
						|
})
 | 
						|
 | 
						|
tape('write nothing, should get empty buffer', function (t) {
 | 
						|
  t.plan(3)
 | 
						|
  BufferList(function (err, data) {
 | 
						|
    t.notOk(err, 'no error')
 | 
						|
    t.ok(Buffer.isBuffer(data), 'got a buffer')
 | 
						|
    t.equal(0, data.length, 'got a zero-length buffer')
 | 
						|
    t.end()
 | 
						|
  }).end()
 | 
						|
})
 | 
						|
 | 
						|
tape('unicode string', function (t) {
 | 
						|
  t.plan(2)
 | 
						|
  var inp1 = '\u2600'
 | 
						|
    , inp2 = '\u2603'
 | 
						|
    , exp = inp1 + ' and ' + inp2
 | 
						|
    , bl = BufferList()
 | 
						|
  bl.write(inp1)
 | 
						|
  bl.write(' and ')
 | 
						|
  bl.write(inp2)
 | 
						|
  t.equal(exp, bl.toString())
 | 
						|
  t.equal(Buffer.from(exp).toString('hex'), bl.toString('hex'))
 | 
						|
})
 | 
						|
 | 
						|
tape('should emit finish', function (t) {
 | 
						|
  var source = BufferList()
 | 
						|
    , dest = BufferList()
 | 
						|
 | 
						|
  source.write('hello')
 | 
						|
  source.pipe(dest)
 | 
						|
 | 
						|
  dest.on('finish', function () {
 | 
						|
    t.equal(dest.toString('utf8'), 'hello')
 | 
						|
    t.end()
 | 
						|
  })
 | 
						|
})
 | 
						|
 | 
						|
tape('basic copy', function (t) {
 | 
						|
  var buf  = crypto.randomBytes(1024)
 | 
						|
    , buf2 = Buffer.alloc(1024)
 | 
						|
    , b    = BufferList(buf)
 | 
						|
 | 
						|
  b.copy(buf2)
 | 
						|
  t.equal(b.slice().toString('hex'), buf2.toString('hex'), 'same buffer')
 | 
						|
  t.end()
 | 
						|
})
 | 
						|
 | 
						|
tape('copy after many appends', function (t) {
 | 
						|
  var buf  = crypto.randomBytes(512)
 | 
						|
    , buf2 = Buffer.alloc(1024)
 | 
						|
    , b    = BufferList(buf)
 | 
						|
 | 
						|
  b.append(buf)
 | 
						|
  b.copy(buf2)
 | 
						|
  t.equal(b.slice().toString('hex'), buf2.toString('hex'), 'same buffer')
 | 
						|
  t.end()
 | 
						|
})
 | 
						|
 | 
						|
tape('copy at a precise position', function (t) {
 | 
						|
  var buf  = crypto.randomBytes(1004)
 | 
						|
    , buf2 = Buffer.alloc(1024)
 | 
						|
    , b    = BufferList(buf)
 | 
						|
 | 
						|
  b.copy(buf2, 20)
 | 
						|
  t.equal(b.slice().toString('hex'), buf2.slice(20).toString('hex'), 'same buffer')
 | 
						|
  t.end()
 | 
						|
})
 | 
						|
 | 
						|
tape('copy starting from a precise location', function (t) {
 | 
						|
  var buf  = crypto.randomBytes(10)
 | 
						|
    , buf2 = Buffer.alloc(5)
 | 
						|
    , b    = BufferList(buf)
 | 
						|
 | 
						|
  b.copy(buf2, 0, 5)
 | 
						|
  t.equal(b.slice(5).toString('hex'), buf2.toString('hex'), 'same buffer')
 | 
						|
  t.end()
 | 
						|
})
 | 
						|
 | 
						|
tape('copy in an interval', function (t) {
 | 
						|
  var rnd      = crypto.randomBytes(10)
 | 
						|
    , b        = BufferList(rnd) // put the random bytes there
 | 
						|
    , actual   = Buffer.alloc(3)
 | 
						|
    , expected = Buffer.alloc(3)
 | 
						|
 | 
						|
  rnd.copy(expected, 0, 5, 8)
 | 
						|
  b.copy(actual, 0, 5, 8)
 | 
						|
 | 
						|
  t.equal(actual.toString('hex'), expected.toString('hex'), 'same buffer')
 | 
						|
  t.end()
 | 
						|
})
 | 
						|
 | 
						|
tape('copy an interval between two buffers', function (t) {
 | 
						|
  var buf      = crypto.randomBytes(10)
 | 
						|
    , buf2     = Buffer.alloc(10)
 | 
						|
    , b        = BufferList(buf)
 | 
						|
 | 
						|
  b.append(buf)
 | 
						|
  b.copy(buf2, 0, 5, 15)
 | 
						|
 | 
						|
  t.equal(b.slice(5, 15).toString('hex'), buf2.toString('hex'), 'same buffer')
 | 
						|
  t.end()
 | 
						|
})
 | 
						|
 | 
						|
tape('shallow slice across buffer boundaries', function (t) {
 | 
						|
  var bl = new BufferList(['First', 'Second', 'Third'])
 | 
						|
 | 
						|
  t.equal(bl.shallowSlice(3, 13).toString(), 'stSecondTh')
 | 
						|
  t.end()
 | 
						|
})
 | 
						|
 | 
						|
tape('shallow slice within single buffer', function (t) {
 | 
						|
  t.plan(2)
 | 
						|
  var bl = new BufferList(['First', 'Second', 'Third'])
 | 
						|
 | 
						|
  t.equal(bl.shallowSlice(5, 10).toString(), 'Secon')
 | 
						|
  t.equal(bl.shallowSlice(7, 10).toString(), 'con')
 | 
						|
  t.end()
 | 
						|
})
 | 
						|
 | 
						|
tape('shallow slice single buffer', function (t) {
 | 
						|
  t.plan(3)
 | 
						|
  var bl = new BufferList(['First', 'Second', 'Third'])
 | 
						|
 | 
						|
  t.equal(bl.shallowSlice(0, 5).toString(), 'First')
 | 
						|
  t.equal(bl.shallowSlice(5, 11).toString(), 'Second')
 | 
						|
  t.equal(bl.shallowSlice(11, 16).toString(), 'Third')
 | 
						|
})
 | 
						|
 | 
						|
tape('shallow slice with negative or omitted indices', function (t) {
 | 
						|
  t.plan(4)
 | 
						|
  var bl = new BufferList(['First', 'Second', 'Third'])
 | 
						|
 | 
						|
  t.equal(bl.shallowSlice().toString(), 'FirstSecondThird')
 | 
						|
  t.equal(bl.shallowSlice(5).toString(), 'SecondThird')
 | 
						|
  t.equal(bl.shallowSlice(5, -3).toString(), 'SecondTh')
 | 
						|
  t.equal(bl.shallowSlice(-8).toString(), 'ondThird')
 | 
						|
})
 | 
						|
 | 
						|
tape('shallow slice does not make a copy', function (t) {
 | 
						|
  t.plan(1)
 | 
						|
  var buffers = [Buffer.from('First'), Buffer.from('Second'), Buffer.from('Third')]
 | 
						|
  var bl = (new BufferList(buffers)).shallowSlice(5, -3)
 | 
						|
 | 
						|
  buffers[1].fill('h')
 | 
						|
  buffers[2].fill('h')
 | 
						|
 | 
						|
  t.equal(bl.toString(), 'hhhhhhhh')
 | 
						|
})
 | 
						|
 | 
						|
tape('shallow slice with 0 length', function (t) {
 | 
						|
  t.plan(1)
 | 
						|
  var buffers = [Buffer.from('First'), Buffer.from('Second'), Buffer.from('Third')]
 | 
						|
  var bl = (new BufferList(buffers)).shallowSlice(0, 0)
 | 
						|
  t.equal(bl.length, 0)
 | 
						|
})
 | 
						|
 | 
						|
tape('shallow slice with 0 length from middle', function (t) {
 | 
						|
  t.plan(1)
 | 
						|
  var buffers = [Buffer.from('First'), Buffer.from('Second'), Buffer.from('Third')]
 | 
						|
  var bl = (new BufferList(buffers)).shallowSlice(10, 10)
 | 
						|
  t.equal(bl.length, 0)
 | 
						|
})
 | 
						|
 | 
						|
tape('duplicate', function (t) {
 | 
						|
  t.plan(2)
 | 
						|
 | 
						|
  var bl = new BufferList('abcdefghij\xff\x00')
 | 
						|
    , dup = bl.duplicate()
 | 
						|
 | 
						|
  t.equal(bl.prototype, dup.prototype)
 | 
						|
  t.equal(bl.toString('hex'), dup.toString('hex'))
 | 
						|
})
 | 
						|
 | 
						|
tape('destroy no pipe', function (t) {
 | 
						|
  t.plan(2)
 | 
						|
 | 
						|
  var bl = new BufferList('alsdkfja;lsdkfja;lsdk')
 | 
						|
  bl.destroy()
 | 
						|
 | 
						|
  t.equal(bl._bufs.length, 0)
 | 
						|
  t.equal(bl.length, 0)
 | 
						|
})
 | 
						|
 | 
						|
!process.browser && tape('destroy with pipe before read end', function (t) {
 | 
						|
  t.plan(2)
 | 
						|
 | 
						|
  var bl = new BufferList()
 | 
						|
  fs.createReadStream(__dirname + '/test.js')
 | 
						|
    .pipe(bl)
 | 
						|
 | 
						|
  bl.destroy()
 | 
						|
 | 
						|
  t.equal(bl._bufs.length, 0)
 | 
						|
  t.equal(bl.length, 0)
 | 
						|
 | 
						|
})
 | 
						|
 | 
						|
!process.browser && tape('destroy with pipe before read end with race', function (t) {
 | 
						|
  t.plan(2)
 | 
						|
 | 
						|
  var bl = new BufferList()
 | 
						|
  fs.createReadStream(__dirname + '/test.js')
 | 
						|
    .pipe(bl)
 | 
						|
 | 
						|
  setTimeout(function () {
 | 
						|
    bl.destroy()
 | 
						|
    setTimeout(function () {
 | 
						|
      t.equal(bl._bufs.length, 0)
 | 
						|
      t.equal(bl.length, 0)
 | 
						|
    }, 500)
 | 
						|
  }, 500)
 | 
						|
})
 | 
						|
 | 
						|
!process.browser && tape('destroy with pipe after read end', function (t) {
 | 
						|
  t.plan(2)
 | 
						|
 | 
						|
  var bl = new BufferList()
 | 
						|
  fs.createReadStream(__dirname + '/test.js')
 | 
						|
    .on('end', onEnd)
 | 
						|
    .pipe(bl)
 | 
						|
 | 
						|
  function onEnd () {
 | 
						|
    bl.destroy()
 | 
						|
 | 
						|
    t.equal(bl._bufs.length, 0)
 | 
						|
    t.equal(bl.length, 0)
 | 
						|
  }
 | 
						|
})
 | 
						|
 | 
						|
!process.browser && tape('destroy with pipe while writing to a destination', function (t) {
 | 
						|
  t.plan(4)
 | 
						|
 | 
						|
  var bl = new BufferList()
 | 
						|
    , ds = new BufferList()
 | 
						|
 | 
						|
  fs.createReadStream(__dirname + '/test.js')
 | 
						|
    .on('end', onEnd)
 | 
						|
    .pipe(bl)
 | 
						|
 | 
						|
  function onEnd () {
 | 
						|
    bl.pipe(ds)
 | 
						|
 | 
						|
    setTimeout(function () {
 | 
						|
      bl.destroy()
 | 
						|
 | 
						|
      t.equals(bl._bufs.length, 0)
 | 
						|
      t.equals(bl.length, 0)
 | 
						|
 | 
						|
      ds.destroy()
 | 
						|
 | 
						|
      t.equals(bl._bufs.length, 0)
 | 
						|
      t.equals(bl.length, 0)
 | 
						|
 | 
						|
    }, 100)
 | 
						|
  }
 | 
						|
})
 | 
						|
 | 
						|
!process.browser && tape('handle error', function (t) {
 | 
						|
  t.plan(2)
 | 
						|
  fs.createReadStream('/does/not/exist').pipe(BufferList(function (err, data) {
 | 
						|
    t.ok(err instanceof Error, 'has error')
 | 
						|
    t.notOk(data, 'no data')
 | 
						|
  }))
 | 
						|
})
 |