Initial commit

4 files changed, 1396 insertions, 0 deletions

diff --git a/node_modules/bl/test/convert.js b/node_modules/bl/test/convert.js
new file mode 100644
index 0000000..9f3e235
--- /dev/null
+++ b/node_modules/bl/test/convert.js
@@ -0,0 +1,21 @@
+'use strict'
+
+const tape = require('tape')
+const { BufferList, BufferListStream } = require('../')
+const { Buffer } = require('buffer')
+
+tape('convert from BufferList to BufferListStream', (t) => {
+  const data = Buffer.from(`TEST-${Date.now()}`)
+  const bl = new BufferList(data)
+  const bls = new BufferListStream(bl)
+  t.ok(bl.slice().equals(bls.slice()))
+  t.end()
+})
+
+tape('convert from BufferListStream to BufferList', (t) => {
+  const data = Buffer.from(`TEST-${Date.now()}`)
+  const bls = new BufferListStream(data)
+  const bl = new BufferList(bls)
+  t.ok(bl.slice().equals(bls.slice()))
+  t.end()
+})
diff --git a/node_modules/bl/test/indexOf.js b/node_modules/bl/test/indexOf.js
new file mode 100644
index 0000000..62dcb01
--- /dev/null
+++ b/node_modules/bl/test/indexOf.js
@@ -0,0 +1,492 @@
+'use strict'
+
+const tape = require('tape')
+const BufferList = require('../')
+const { Buffer } = require('buffer')
+
+tape('indexOf single byte needle', (t) => {
+  const bl = new BufferList(['abcdefg', 'abcdefg', '12345'])
+
+  t.equal(bl.indexOf('e'), 4)
+  t.equal(bl.indexOf('e', 5), 11)
+  t.equal(bl.indexOf('e', 12), -1)
+  t.equal(bl.indexOf('5'), 18)
+
+  t.end()
+})
+
+tape('indexOf multiple byte needle', (t) => {
+  const bl = new BufferList(['abcdefg', 'abcdefg'])
+
+  t.equal(bl.indexOf('ef'), 4)
+  t.equal(bl.indexOf('ef', 5), 11)
+
+  t.end()
+})
+
+tape('indexOf multiple byte needles across buffer boundaries', (t) => {
+  const bl = new BufferList(['abcdefg', 'abcdefg'])
+
+  t.equal(bl.indexOf('fgabc'), 5)
+
+  t.end()
+})
+
+tape('indexOf takes a Uint8Array search', (t) => {
+  const bl = new BufferList(['abcdefg', 'abcdefg'])
+  const search = new Uint8Array([102, 103, 97, 98, 99]) // fgabc
+
+  t.equal(bl.indexOf(search), 5)
+
+  t.end()
+})
+
+tape('indexOf takes a buffer list search', (t) => {
+  const bl = new BufferList(['abcdefg', 'abcdefg'])
+  const search = new BufferList('fgabc')
+
+  t.equal(bl.indexOf(search), 5)
+
+  t.end()
+})
+
+tape('indexOf a zero byte needle', (t) => {
+  const b = new BufferList('abcdef')
+  const bufEmpty = Buffer.from('')
+
+  t.equal(b.indexOf(''), 0)
+  t.equal(b.indexOf('', 1), 1)
+  t.equal(b.indexOf('', b.length + 1), b.length)
+  t.equal(b.indexOf('', Infinity), b.length)
+  t.equal(b.indexOf(bufEmpty), 0)
+  t.equal(b.indexOf(bufEmpty, 1), 1)
+  t.equal(b.indexOf(bufEmpty, b.length + 1), b.length)
+  t.equal(b.indexOf(bufEmpty, Infinity), b.length)
+
+  t.end()
+})
+
+tape('indexOf buffers smaller and larger than the needle', (t) => {
+  const bl = new BufferList(['abcdefg', 'a', 'bcdefg', 'a', 'bcfgab'])
+
+  t.equal(bl.indexOf('fgabc'), 5)
+  t.equal(bl.indexOf('fgabc', 6), 12)
+  t.equal(bl.indexOf('fgabc', 13), -1)
+
+  t.end()
+})
+
+// only present in node 6+
+;(process.version.substr(1).split('.')[0] >= 6) && tape('indexOf latin1 and binary encoding', (t) => {
+  const b = new BufferList('abcdef')
+
+  // test latin1 encoding
+  t.equal(
+    new BufferList(Buffer.from(b.toString('latin1'), 'latin1'))
+      .indexOf('d', 0, 'latin1'),
+    3
+  )
+  t.equal(
+    new BufferList(Buffer.from(b.toString('latin1'), 'latin1'))
+      .indexOf(Buffer.from('d', 'latin1'), 0, 'latin1'),
+    3
+  )
+  t.equal(
+    new BufferList(Buffer.from('aa\u00e8aa', 'latin1'))
+      .indexOf('\u00e8', 'latin1'),
+    2
+  )
+  t.equal(
+    new BufferList(Buffer.from('\u00e8', 'latin1'))
+      .indexOf('\u00e8', 'latin1'),
+    0
+  )
+  t.equal(
+    new BufferList(Buffer.from('\u00e8', 'latin1'))
+      .indexOf(Buffer.from('\u00e8', 'latin1'), 'latin1'),
+    0
+  )
+
+  // test binary encoding
+  t.equal(
+    new BufferList(Buffer.from(b.toString('binary'), 'binary'))
+      .indexOf('d', 0, 'binary'),
+    3
+  )
+  t.equal(
+    new BufferList(Buffer.from(b.toString('binary'), 'binary'))
+      .indexOf(Buffer.from('d', 'binary'), 0, 'binary'),
+    3
+  )
+  t.equal(
+    new BufferList(Buffer.from('aa\u00e8aa', 'binary'))
+      .indexOf('\u00e8', 'binary'),
+    2
+  )
+  t.equal(
+    new BufferList(Buffer.from('\u00e8', 'binary'))
+      .indexOf('\u00e8', 'binary'),
+    0
+  )
+  t.equal(
+    new BufferList(Buffer.from('\u00e8', 'binary'))
+      .indexOf(Buffer.from('\u00e8', 'binary'), 'binary'),
+    0
+  )
+
+  t.end()
+})
+
+tape('indexOf the entire nodejs10 buffer test suite', (t) => {
+  const b = new BufferList('abcdef')
+  const bufA = Buffer.from('a')
+  const bufBc = Buffer.from('bc')
+  const bufF = Buffer.from('f')
+  const bufZ = Buffer.from('z')
+
+  const stringComparison = 'abcdef'
+
+  t.equal(b.indexOf('a'), 0)
+  t.equal(b.indexOf('a', 1), -1)
+  t.equal(b.indexOf('a', -1), -1)
+  t.equal(b.indexOf('a', -4), -1)
+  t.equal(b.indexOf('a', -b.length), 0)
+  t.equal(b.indexOf('a', NaN), 0)
+  t.equal(b.indexOf('a', -Infinity), 0)
+  t.equal(b.indexOf('a', Infinity), -1)
+  t.equal(b.indexOf('bc'), 1)
+  t.equal(b.indexOf('bc', 2), -1)
+  t.equal(b.indexOf('bc', -1), -1)
+  t.equal(b.indexOf('bc', -3), -1)
+  t.equal(b.indexOf('bc', -5), 1)
+  t.equal(b.indexOf('bc', NaN), 1)
+  t.equal(b.indexOf('bc', -Infinity), 1)
+  t.equal(b.indexOf('bc', Infinity), -1)
+  t.equal(b.indexOf('f'), b.length - 1)
+  t.equal(b.indexOf('z'), -1)
+
+  // empty search tests
+  t.equal(b.indexOf(bufA), 0)
+  t.equal(b.indexOf(bufA, 1), -1)
+  t.equal(b.indexOf(bufA, -1), -1)
+  t.equal(b.indexOf(bufA, -4), -1)
+  t.equal(b.indexOf(bufA, -b.length), 0)
+  t.equal(b.indexOf(bufA, NaN), 0)
+  t.equal(b.indexOf(bufA, -Infinity), 0)
+  t.equal(b.indexOf(bufA, Infinity), -1)
+  t.equal(b.indexOf(bufBc), 1)
+  t.equal(b.indexOf(bufBc, 2), -1)
+  t.equal(b.indexOf(bufBc, -1), -1)
+  t.equal(b.indexOf(bufBc, -3), -1)
+  t.equal(b.indexOf(bufBc, -5), 1)
+  t.equal(b.indexOf(bufBc, NaN), 1)
+  t.equal(b.indexOf(bufBc, -Infinity), 1)
+  t.equal(b.indexOf(bufBc, Infinity), -1)
+  t.equal(b.indexOf(bufF), b.length - 1)
+  t.equal(b.indexOf(bufZ), -1)
+  t.equal(b.indexOf(0x61), 0)
+  t.equal(b.indexOf(0x61, 1), -1)
+  t.equal(b.indexOf(0x61, -1), -1)
+  t.equal(b.indexOf(0x61, -4), -1)
+  t.equal(b.indexOf(0x61, -b.length), 0)
+  t.equal(b.indexOf(0x61, NaN), 0)
+  t.equal(b.indexOf(0x61, -Infinity), 0)
+  t.equal(b.indexOf(0x61, Infinity), -1)
+  t.equal(b.indexOf(0x0), -1)
+
+  // test offsets
+  t.equal(b.indexOf('d', 2), 3)
+  t.equal(b.indexOf('f', 5), 5)
+  t.equal(b.indexOf('f', -1), 5)
+  t.equal(b.indexOf('f', 6), -1)
+
+  t.equal(b.indexOf(Buffer.from('d'), 2), 3)
+  t.equal(b.indexOf(Buffer.from('f'), 5), 5)
+  t.equal(b.indexOf(Buffer.from('f'), -1), 5)
+  t.equal(b.indexOf(Buffer.from('f'), 6), -1)
+
+  t.equal(Buffer.from('ff').indexOf(Buffer.from('f'), 1, 'ucs2'), -1)
+
+  // test invalid and uppercase encoding
+  t.equal(b.indexOf('b', 'utf8'), 1)
+  t.equal(b.indexOf('b', 'UTF8'), 1)
+  t.equal(b.indexOf('62', 'HEX'), 1)
+  t.throws(() => b.indexOf('bad', 'enc'), TypeError)
+
+  // test hex encoding
+  t.equal(
+    Buffer.from(b.toString('hex'), 'hex')
+      .indexOf('64', 0, 'hex'),
+    3
+  )
+  t.equal(
+    Buffer.from(b.toString('hex'), 'hex')
+      .indexOf(Buffer.from('64', 'hex'), 0, 'hex'),
+    3
+  )
+
+  // test base64 encoding
+  t.equal(
+    Buffer.from(b.toString('base64'), 'base64')
+      .indexOf('ZA==', 0, 'base64'),
+    3
+  )
+  t.equal(
+    Buffer.from(b.toString('base64'), 'base64')
+      .indexOf(Buffer.from('ZA==', 'base64'), 0, 'base64'),
+    3
+  )
+
+  // test ascii encoding
+  t.equal(
+    Buffer.from(b.toString('ascii'), 'ascii')
+      .indexOf('d', 0, 'ascii'),
+    3
+  )
+  t.equal(
+    Buffer.from(b.toString('ascii'), 'ascii')
+      .indexOf(Buffer.from('d', 'ascii'), 0, 'ascii'),
+    3
+  )
+
+  // test optional offset with passed encoding
+  t.equal(Buffer.from('aaaa0').indexOf('30', 'hex'), 4)
+  t.equal(Buffer.from('aaaa00a').indexOf('3030', 'hex'), 4)
+
+  {
+    // test usc2 encoding
+    const twoByteString = Buffer.from('\u039a\u0391\u03a3\u03a3\u0395', 'ucs2')
+
+    t.equal(8, twoByteString.indexOf('\u0395', 4, 'ucs2'))
+    t.equal(6, twoByteString.indexOf('\u03a3', -4, 'ucs2'))
+    t.equal(4, twoByteString.indexOf('\u03a3', -6, 'ucs2'))
+    t.equal(4, twoByteString.indexOf(
+      Buffer.from('\u03a3', 'ucs2'), -6, 'ucs2'))
+    t.equal(-1, twoByteString.indexOf('\u03a3', -2, 'ucs2'))
+  }
+
+  const mixedByteStringUcs2 =
+      Buffer.from('\u039a\u0391abc\u03a3\u03a3\u0395', 'ucs2')
+
+  t.equal(6, mixedByteStringUcs2.indexOf('bc', 0, 'ucs2'))
+  t.equal(10, mixedByteStringUcs2.indexOf('\u03a3', 0, 'ucs2'))
+  t.equal(-1, mixedByteStringUcs2.indexOf('\u0396', 0, 'ucs2'))
+
+  t.equal(
+    6, mixedByteStringUcs2.indexOf(Buffer.from('bc', 'ucs2'), 0, 'ucs2'))
+  t.equal(
+    10, mixedByteStringUcs2.indexOf(Buffer.from('\u03a3', 'ucs2'), 0, 'ucs2'))
+  t.equal(
+    -1, mixedByteStringUcs2.indexOf(Buffer.from('\u0396', 'ucs2'), 0, 'ucs2'))
+
+  {
+    const twoByteString = Buffer.from('\u039a\u0391\u03a3\u03a3\u0395', 'ucs2')
+
+    // Test single char pattern
+    t.equal(0, twoByteString.indexOf('\u039a', 0, 'ucs2'))
+    let index = twoByteString.indexOf('\u0391', 0, 'ucs2')
+    t.equal(2, index, `Alpha - at index ${index}`)
+    index = twoByteString.indexOf('\u03a3', 0, 'ucs2')
+    t.equal(4, index, `First Sigma - at index ${index}`)
+    index = twoByteString.indexOf('\u03a3', 6, 'ucs2')
+    t.equal(6, index, `Second Sigma - at index ${index}`)
+    index = twoByteString.indexOf('\u0395', 0, 'ucs2')
+    t.equal(8, index, `Epsilon - at index ${index}`)
+    index = twoByteString.indexOf('\u0392', 0, 'ucs2')
+    t.equal(-1, index, `Not beta - at index ${index}`)
+
+    // Test multi-char pattern
+    index = twoByteString.indexOf('\u039a\u0391', 0, 'ucs2')
+    t.equal(0, index, `Lambda Alpha - at index ${index}`)
+    index = twoByteString.indexOf('\u0391\u03a3', 0, 'ucs2')
+    t.equal(2, index, `Alpha Sigma - at index ${index}`)
+    index = twoByteString.indexOf('\u03a3\u03a3', 0, 'ucs2')
+    t.equal(4, index, `Sigma Sigma - at index ${index}`)
+    index = twoByteString.indexOf('\u03a3\u0395', 0, 'ucs2')
+    t.equal(6, index, `Sigma Epsilon - at index ${index}`)
+  }
+
+  const mixedByteStringUtf8 = Buffer.from('\u039a\u0391abc\u03a3\u03a3\u0395')
+
+  t.equal(5, mixedByteStringUtf8.indexOf('bc'))
+  t.equal(5, mixedByteStringUtf8.indexOf('bc', 5))
+  t.equal(5, mixedByteStringUtf8.indexOf('bc', -8))
+  t.equal(7, mixedByteStringUtf8.indexOf('\u03a3'))
+  t.equal(-1, mixedByteStringUtf8.indexOf('\u0396'))
+
+  // Test complex string indexOf algorithms. Only trigger for long strings.
+  // Long string that isn't a simple repeat of a shorter string.
+  let longString = 'A'
+  for (let i = 66; i < 76; i++) { // from 'B' to 'K'
+    longString = longString + String.fromCharCode(i) + longString
+  }
+
+  const longBufferString = Buffer.from(longString)
+
+  // pattern of 15 chars, repeated every 16 chars in long
+  let pattern = 'ABACABADABACABA'
+  for (let i = 0; i < longBufferString.length - pattern.length; i += 7) {
+    const index = longBufferString.indexOf(pattern, i)
+    t.equal((i + 15) & ~0xf, index,
+      `Long ABACABA...-string at index ${i}`)
+  }
+
+  let index = longBufferString.indexOf('AJABACA')
+  t.equal(510, index, `Long AJABACA, First J - at index ${index}`)
+  index = longBufferString.indexOf('AJABACA', 511)
+  t.equal(1534, index, `Long AJABACA, Second J - at index ${index}`)
+
+  pattern = 'JABACABADABACABA'
+  index = longBufferString.indexOf(pattern)
+  t.equal(511, index, `Long JABACABA..., First J - at index ${index}`)
+  index = longBufferString.indexOf(pattern, 512)
+  t.equal(
+    1535, index, `Long JABACABA..., Second J - at index ${index}`)
+
+  // Search for a non-ASCII string in a pure ASCII string.
+  const asciiString = Buffer.from(
+    'somethingnotatallsinisterwhichalsoworks')
+  t.equal(-1, asciiString.indexOf('\x2061'))
+  t.equal(3, asciiString.indexOf('eth', 0))
+
+  // Search in string containing many non-ASCII chars.
+  const allCodePoints = []
+  for (let i = 0; i < 65536; i++) {
+    allCodePoints[i] = i
+  }
+
+  const allCharsString = String.fromCharCode.apply(String, allCodePoints)
+  const allCharsBufferUtf8 = Buffer.from(allCharsString)
+  const allCharsBufferUcs2 = Buffer.from(allCharsString, 'ucs2')
+
+  // Search for string long enough to trigger complex search with ASCII pattern
+  // and UC16 subject.
+  t.equal(-1, allCharsBufferUtf8.indexOf('notfound'))
+  t.equal(-1, allCharsBufferUcs2.indexOf('notfound'))
+
+  // Needle is longer than haystack, but only because it's encoded as UTF-16
+  t.equal(Buffer.from('aaaa').indexOf('a'.repeat(4), 'ucs2'), -1)
+
+  t.equal(Buffer.from('aaaa').indexOf('a'.repeat(4), 'utf8'), 0)
+  t.equal(Buffer.from('aaaa').indexOf('你好', 'ucs2'), -1)
+
+  // Haystack has odd length, but the needle is UCS2.
+  t.equal(Buffer.from('aaaaa').indexOf('b', 'ucs2'), -1)
+
+  {
+    // Find substrings in Utf8.
+    const lengths = [1, 3, 15] // Single char, simple and complex.
+    const indices = [0x5, 0x60, 0x400, 0x680, 0x7ee, 0xFF02, 0x16610, 0x2f77b]
+    for (let lengthIndex = 0; lengthIndex < lengths.length; lengthIndex++) {
+      for (let i = 0; i < indices.length; i++) {
+        const index = indices[i]
+        let length = lengths[lengthIndex]
+
+        if (index + length > 0x7F) {
+          length = 2 * length
+        }
+
+        if (index + length > 0x7FF) {
+          length = 3 * length
+        }
+
+        if (index + length > 0xFFFF) {
+          length = 4 * length
+        }
+
+        const patternBufferUtf8 = allCharsBufferUtf8.slice(index, index + length)
+        t.equal(index, allCharsBufferUtf8.indexOf(patternBufferUtf8))
+
+        const patternStringUtf8 = patternBufferUtf8.toString()
+        t.equal(index, allCharsBufferUtf8.indexOf(patternStringUtf8))
+      }
+    }
+  }
+
+  {
+    // Find substrings in Usc2.
+    const lengths = [2, 4, 16] // Single char, simple and complex.
+    const indices = [0x5, 0x65, 0x105, 0x205, 0x285, 0x2005, 0x2085, 0xfff0]
+
+    for (let lengthIndex = 0; lengthIndex < lengths.length; lengthIndex++) {
+      for (let i = 0; i < indices.length; i++) {
+        const index = indices[i] * 2
+        const length = lengths[lengthIndex]
+
+        const patternBufferUcs2 =
+            allCharsBufferUcs2.slice(index, index + length)
+        t.equal(
+          index, allCharsBufferUcs2.indexOf(patternBufferUcs2, 0, 'ucs2'))
+
+        const patternStringUcs2 = patternBufferUcs2.toString('ucs2')
+        t.equal(
+          index, allCharsBufferUcs2.indexOf(patternStringUcs2, 0, 'ucs2'))
+      }
+    }
+  }
+
+  [
+    () => {},
+    {},
+    []
+  ].forEach((val) => {
+    t.throws(() => b.indexOf(val), TypeError, `"${JSON.stringify(val)}" should throw`)
+  })
+
+  // Test weird offset arguments.
+  // The following offsets coerce to NaN or 0, searching the whole Buffer
+  t.equal(b.indexOf('b', undefined), 1)
+  t.equal(b.indexOf('b', {}), 1)
+  t.equal(b.indexOf('b', 0), 1)
+  t.equal(b.indexOf('b', null), 1)
+  t.equal(b.indexOf('b', []), 1)
+
+  // The following offset coerces to 2, in other words +[2] === 2
+  t.equal(b.indexOf('b', [2]), -1)
+
+  // Behavior should match String.indexOf()
+  t.equal(
+    b.indexOf('b', undefined),
+    stringComparison.indexOf('b', undefined))
+  t.equal(
+    b.indexOf('b', {}),
+    stringComparison.indexOf('b', {}))
+  t.equal(
+    b.indexOf('b', 0),
+    stringComparison.indexOf('b', 0))
+  t.equal(
+    b.indexOf('b', null),
+    stringComparison.indexOf('b', null))
+  t.equal(
+    b.indexOf('b', []),
+    stringComparison.indexOf('b', []))
+  t.equal(
+    b.indexOf('b', [2]),
+    stringComparison.indexOf('b', [2]))
+
+  // test truncation of Number arguments to uint8
+  {
+    const buf = Buffer.from('this is a test')
+
+    t.equal(buf.indexOf(0x6973), 3)
+    t.equal(buf.indexOf(0x697320), 4)
+    t.equal(buf.indexOf(0x69732069), 2)
+    t.equal(buf.indexOf(0x697374657374), 0)
+    t.equal(buf.indexOf(0x69737374), 0)
+    t.equal(buf.indexOf(0x69737465), 11)
+    t.equal(buf.indexOf(0x69737465), 11)
+    t.equal(buf.indexOf(-140), 0)
+    t.equal(buf.indexOf(-152), 1)
+    t.equal(buf.indexOf(0xff), -1)
+    t.equal(buf.indexOf(0xffff), -1)
+  }
+
+  // Test that Uint8Array arguments are okay.
+  {
+    const needle = new Uint8Array([0x66, 0x6f, 0x6f])
+    const haystack = new BufferList(Buffer.from('a foo b foo'))
+    t.equal(haystack.indexOf(needle), 2)
+  }
+
+  t.end()
+})
diff --git a/node_modules/bl/test/isBufferList.js b/node_modules/bl/test/isBufferList.js
new file mode 100644
index 0000000..9d895d5
--- /dev/null
+++ b/node_modules/bl/test/isBufferList.js
@@ -0,0 +1,32 @@
+'use strict'
+
+const tape = require('tape')
+const { BufferList, BufferListStream } = require('../')
+const { Buffer } = require('buffer')
+
+tape('isBufferList positives', (t) => {
+  t.ok(BufferList.isBufferList(new BufferList()))
+  t.ok(BufferList.isBufferList(new BufferListStream()))
+
+  t.end()
+})
+
+tape('isBufferList negatives', (t) => {
+  const types = [
+    null,
+    undefined,
+    NaN,
+    true,
+    false,
+    {},
+    [],
+    Buffer.alloc(0),
+    [Buffer.alloc(0)]
+  ]
+
+  for (const obj of types) {
+    t.notOk(BufferList.isBufferList(obj))
+  }
+
+  t.end()
+})
diff --git a/node_modules/bl/test/test.js b/node_modules/bl/test/test.js
new file mode 100644
index 0000000..e03bb85
--- /dev/null
+++ b/node_modules/bl/test/test.js
@@ -0,0 +1,851 @@
+'use strict'
+
+const tape = require('tape')
+const crypto = require('crypto')
+const fs = require('fs')
+const path = require('path')
+const BufferList = require('../')
+const { Buffer } = require('buffer')
+
+const encodings =
+      ('hex utf8 utf-8 ascii binary base64' +
+          (process.browser ? '' : ' ucs2 ucs-2 utf16le utf-16le')).split(' ')
+
+require('./indexOf')
+require('./isBufferList')
+require('./convert')
+
+tape('single bytes from single buffer', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('abcd'))
+
+  t.equal(bl.length, 4)
+  t.equal(bl.get(-1), undefined)
+  t.equal(bl.get(0), 97)
+  t.equal(bl.get(1), 98)
+  t.equal(bl.get(2), 99)
+  t.equal(bl.get(3), 100)
+  t.equal(bl.get(4), undefined)
+
+  t.end()
+})
+
+tape('single bytes from multiple buffers', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('abcd'))
+  bl.append(Buffer.from('efg'))
+  bl.append(Buffer.from('hi'))
+  bl.append(Buffer.from('j'))
+
+  t.equal(bl.length, 10)
+
+  t.equal(bl.get(0), 97)
+  t.equal(bl.get(1), 98)
+  t.equal(bl.get(2), 99)
+  t.equal(bl.get(3), 100)
+  t.equal(bl.get(4), 101)
+  t.equal(bl.get(5), 102)
+  t.equal(bl.get(6), 103)
+  t.equal(bl.get(7), 104)
+  t.equal(bl.get(8), 105)
+  t.equal(bl.get(9), 106)
+
+  t.end()
+})
+
+tape('multi bytes from single buffer', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('abcd'))
+
+  t.equal(bl.length, 4)
+
+  t.equal(bl.slice(0, 4).toString('ascii'), 'abcd')
+  t.equal(bl.slice(0, 3).toString('ascii'), 'abc')
+  t.equal(bl.slice(1, 4).toString('ascii'), 'bcd')
+  t.equal(bl.slice(-4, -1).toString('ascii'), 'abc')
+
+  t.end()
+})
+
+tape('multi bytes from single buffer (negative indexes)', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('buffer'))
+
+  t.equal(bl.length, 6)
+
+  t.equal(bl.slice(-6, -1).toString('ascii'), 'buffe')
+  t.equal(bl.slice(-6, -2).toString('ascii'), 'buff')
+  t.equal(bl.slice(-5, -2).toString('ascii'), 'uff')
+
+  t.end()
+})
+
+tape('multiple bytes from multiple buffers', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('abcd'))
+  bl.append(Buffer.from('efg'))
+  bl.append(Buffer.from('hi'))
+  bl.append(Buffer.from('j'))
+
+  t.equal(bl.length, 10)
+
+  t.equal(bl.slice(0, 10).toString('ascii'), 'abcdefghij')
+  t.equal(bl.slice(3, 10).toString('ascii'), 'defghij')
+  t.equal(bl.slice(3, 6).toString('ascii'), 'def')
+  t.equal(bl.slice(3, 8).toString('ascii'), 'defgh')
+  t.equal(bl.slice(5, 10).toString('ascii'), 'fghij')
+  t.equal(bl.slice(-7, -4).toString('ascii'), 'def')
+
+  t.end()
+})
+
+tape('multiple bytes from multiple buffer lists', function (t) {
+  const bl = new BufferList()
+
+  bl.append(new BufferList([Buffer.from('abcd'), Buffer.from('efg')]))
+  bl.append(new BufferList([Buffer.from('hi'), Buffer.from('j')]))
+
+  t.equal(bl.length, 10)
+
+  t.equal(bl.slice(0, 10).toString('ascii'), 'abcdefghij')
+
+  t.equal(bl.slice(3, 10).toString('ascii'), 'defghij')
+  t.equal(bl.slice(3, 6).toString('ascii'), 'def')
+  t.equal(bl.slice(3, 8).toString('ascii'), 'defgh')
+  t.equal(bl.slice(5, 10).toString('ascii'), 'fghij')
+
+  t.end()
+})
+
+// same data as previous test, just using nested constructors
+tape('multiple bytes from crazy nested buffer lists', function (t) {
+  const bl = new BufferList()
+
+  bl.append(new BufferList([
+    new BufferList([
+      new BufferList(Buffer.from('abc')),
+      Buffer.from('d'),
+      new BufferList(Buffer.from('efg'))
+    ]),
+    new BufferList([Buffer.from('hi')]),
+    new BufferList(Buffer.from('j'))
+  ]))
+
+  t.equal(bl.length, 10)
+
+  t.equal(bl.slice(0, 10).toString('ascii'), 'abcdefghij')
+
+  t.equal(bl.slice(3, 10).toString('ascii'), 'defghij')
+  t.equal(bl.slice(3, 6).toString('ascii'), 'def')
+  t.equal(bl.slice(3, 8).toString('ascii'), 'defgh')
+  t.equal(bl.slice(5, 10).toString('ascii'), 'fghij')
+
+  t.end()
+})
+
+tape('append accepts arrays of Buffers', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('abc'))
+  bl.append([Buffer.from('def')])
+  bl.append([Buffer.from('ghi'), Buffer.from('jkl')])
+  bl.append([Buffer.from('mnop'), Buffer.from('qrstu'), Buffer.from('vwxyz')])
+  t.equal(bl.length, 26)
+  t.equal(bl.slice().toString('ascii'), 'abcdefghijklmnopqrstuvwxyz')
+
+  t.end()
+})
+
+tape('append accepts arrays of Uint8Arrays', function (t) {
+  const bl = new BufferList()
+
+  bl.append(new Uint8Array([97, 98, 99]))
+  bl.append([Uint8Array.from([100, 101, 102])])
+  bl.append([new Uint8Array([103, 104, 105]), new Uint8Array([106, 107, 108])])
+  bl.append([new Uint8Array([109, 110, 111, 112]), new Uint8Array([113, 114, 115, 116, 117]), new Uint8Array([118, 119, 120, 121, 122])])
+  t.equal(bl.length, 26)
+  t.equal(bl.slice().toString('ascii'), 'abcdefghijklmnopqrstuvwxyz')
+
+  t.end()
+})
+
+tape('append accepts arrays of BufferLists', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('abc'))
+  bl.append([new BufferList('def')])
+  bl.append(new BufferList([Buffer.from('ghi'), new BufferList('jkl')]))
+  bl.append([Buffer.from('mnop'), new BufferList([Buffer.from('qrstu'), Buffer.from('vwxyz')])])
+  t.equal(bl.length, 26)
+  t.equal(bl.slice().toString('ascii'), 'abcdefghijklmnopqrstuvwxyz')
+
+  t.end()
+})
+
+tape('append chainable', function (t) {
+  const bl = new BufferList()
+
+  t.ok(bl.append(Buffer.from('abcd')) === bl)
+  t.ok(bl.append([Buffer.from('abcd')]) === bl)
+  t.ok(bl.append(new BufferList(Buffer.from('abcd'))) === bl)
+  t.ok(bl.append([new BufferList(Buffer.from('abcd'))]) === bl)
+
+  t.end()
+})
+
+tape('append chainable (test results)', function (t) {
+  const bl = new BufferList('abc')
+    .append([new BufferList('def')])
+    .append(new BufferList([Buffer.from('ghi'), new BufferList('jkl')]))
+    .append([Buffer.from('mnop'), new BufferList([Buffer.from('qrstu'), Buffer.from('vwxyz')])])
+
+  t.equal(bl.length, 26)
+  t.equal(bl.slice().toString('ascii'), 'abcdefghijklmnopqrstuvwxyz')
+
+  t.end()
+})
+
+tape('consuming from multiple buffers', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('abcd'))
+  bl.append(Buffer.from('efg'))
+  bl.append(Buffer.from('hi'))
+  bl.append(Buffer.from('j'))
+
+  t.equal(bl.length, 10)
+
+  t.equal(bl.slice(0, 10).toString('ascii'), 'abcdefghij')
+
+  bl.consume(3)
+  t.equal(bl.length, 7)
+  t.equal(bl.slice(0, 7).toString('ascii'), 'defghij')
+
+  bl.consume(2)
+  t.equal(bl.length, 5)
+  t.equal(bl.slice(0, 5).toString('ascii'), 'fghij')
+
+  bl.consume(1)
+  t.equal(bl.length, 4)
+  t.equal(bl.slice(0, 4).toString('ascii'), 'ghij')
+
+  bl.consume(1)
+  t.equal(bl.length, 3)
+  t.equal(bl.slice(0, 3).toString('ascii'), 'hij')
+
+  bl.consume(2)
+  t.equal(bl.length, 1)
+  t.equal(bl.slice(0, 1).toString('ascii'), 'j')
+
+  t.end()
+})
+
+tape('complete consumption', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('a'))
+  bl.append(Buffer.from('b'))
+
+  bl.consume(2)
+
+  t.equal(bl.length, 0)
+  t.equal(bl._bufs.length, 0)
+
+  t.end()
+})
+
+tape('test readUInt8 / readInt8', function (t) {
+  const buf1 = Buffer.alloc(1)
+  const buf2 = Buffer.alloc(3)
+  const buf3 = Buffer.alloc(3)
+  const bl = new BufferList()
+
+  buf2[1] = 0x3
+  buf2[2] = 0x4
+  buf3[0] = 0x23
+  buf3[1] = 0x42
+
+  bl.append(buf1)
+  bl.append(buf2)
+  bl.append(buf3)
+
+  t.equal(bl.readUInt8(2), 0x3)
+  t.equal(bl.readInt8(2), 0x3)
+  t.equal(bl.readUInt8(3), 0x4)
+  t.equal(bl.readInt8(3), 0x4)
+  t.equal(bl.readUInt8(4), 0x23)
+  t.equal(bl.readInt8(4), 0x23)
+  t.equal(bl.readUInt8(5), 0x42)
+  t.equal(bl.readInt8(5), 0x42)
+
+  t.end()
+})
+
+tape('test readUInt16LE / readUInt16BE / readInt16LE / readInt16BE', function (t) {
+  const buf1 = Buffer.alloc(1)
+  const buf2 = Buffer.alloc(3)
+  const buf3 = Buffer.alloc(3)
+  const bl = new BufferList()
+
+  buf2[1] = 0x3
+  buf2[2] = 0x4
+  buf3[0] = 0x23
+  buf3[1] = 0x42
+
+  bl.append(buf1)
+  bl.append(buf2)
+  bl.append(buf3)
+
+  t.equal(bl.readUInt16BE(2), 0x0304)
+  t.equal(bl.readUInt16LE(2), 0x0403)
+  t.equal(bl.readInt16BE(2), 0x0304)
+  t.equal(bl.readInt16LE(2), 0x0403)
+  t.equal(bl.readUInt16BE(3), 0x0423)
+  t.equal(bl.readUInt16LE(3), 0x2304)
+  t.equal(bl.readInt16BE(3), 0x0423)
+  t.equal(bl.readInt16LE(3), 0x2304)
+  t.equal(bl.readUInt16BE(4), 0x2342)
+  t.equal(bl.readUInt16LE(4), 0x4223)
+  t.equal(bl.readInt16BE(4), 0x2342)
+  t.equal(bl.readInt16LE(4), 0x4223)
+
+  t.end()
+})
+
+tape('test readUInt32LE / readUInt32BE / readInt32LE / readInt32BE', function (t) {
+  const buf1 = Buffer.alloc(1)
+  const buf2 = Buffer.alloc(3)
+  const buf3 = Buffer.alloc(3)
+  const bl = new BufferList()
+
+  buf2[1] = 0x3
+  buf2[2] = 0x4
+  buf3[0] = 0x23
+  buf3[1] = 0x42
+
+  bl.append(buf1)
+  bl.append(buf2)
+  bl.append(buf3)
+
+  t.equal(bl.readUInt32BE(2), 0x03042342)
+  t.equal(bl.readUInt32LE(2), 0x42230403)
+  t.equal(bl.readInt32BE(2), 0x03042342)
+  t.equal(bl.readInt32LE(2), 0x42230403)
+
+  t.end()
+})
+
+tape('test readUIntLE / readUIntBE / readIntLE / readIntBE', function (t) {
+  const buf1 = Buffer.alloc(1)
+  const buf2 = Buffer.alloc(3)
+  const buf3 = Buffer.alloc(3)
+  const bl = new BufferList()
+
+  buf2[0] = 0x2
+  buf2[1] = 0x3
+  buf2[2] = 0x4
+  buf3[0] = 0x23
+  buf3[1] = 0x42
+  buf3[2] = 0x61
+
+  bl.append(buf1)
+  bl.append(buf2)
+  bl.append(buf3)
+
+  t.equal(bl.readUIntBE(1, 1), 0x02)
+  t.equal(bl.readUIntBE(1, 2), 0x0203)
+  t.equal(bl.readUIntBE(1, 3), 0x020304)
+  t.equal(bl.readUIntBE(1, 4), 0x02030423)
+  t.equal(bl.readUIntBE(1, 5), 0x0203042342)
+  t.equal(bl.readUIntBE(1, 6), 0x020304234261)
+  t.equal(bl.readUIntLE(1, 1), 0x02)
+  t.equal(bl.readUIntLE(1, 2), 0x0302)
+  t.equal(bl.readUIntLE(1, 3), 0x040302)
+  t.equal(bl.readUIntLE(1, 4), 0x23040302)
+  t.equal(bl.readUIntLE(1, 5), 0x4223040302)
+  t.equal(bl.readUIntLE(1, 6), 0x614223040302)
+  t.equal(bl.readIntBE(1, 1), 0x02)
+  t.equal(bl.readIntBE(1, 2), 0x0203)
+  t.equal(bl.readIntBE(1, 3), 0x020304)
+  t.equal(bl.readIntBE(1, 4), 0x02030423)
+  t.equal(bl.readIntBE(1, 5), 0x0203042342)
+  t.equal(bl.readIntBE(1, 6), 0x020304234261)
+  t.equal(bl.readIntLE(1, 1), 0x02)
+  t.equal(bl.readIntLE(1, 2), 0x0302)
+  t.equal(bl.readIntLE(1, 3), 0x040302)
+  t.equal(bl.readIntLE(1, 4), 0x23040302)
+  t.equal(bl.readIntLE(1, 5), 0x4223040302)
+  t.equal(bl.readIntLE(1, 6), 0x614223040302)
+
+  t.end()
+})
+
+tape('test readFloatLE / readFloatBE', function (t) {
+  const buf1 = Buffer.alloc(1)
+  const buf2 = Buffer.alloc(3)
+  const buf3 = Buffer.alloc(3)
+  const bl = new BufferList()
+
+  buf2[1] = 0x00
+  buf2[2] = 0x00
+  buf3[0] = 0x80
+  buf3[1] = 0x3f
+
+  bl.append(buf1)
+  bl.append(buf2)
+  bl.append(buf3)
+
+  t.equal(bl.readFloatLE(2), 0x01)
+
+  t.end()
+})
+
+tape('test readDoubleLE / readDoubleBE', function (t) {
+  const buf1 = Buffer.alloc(1)
+  const buf2 = Buffer.alloc(3)
+  const buf3 = Buffer.alloc(10)
+  const bl = new BufferList()
+
+  buf2[1] = 0x55
+  buf2[2] = 0x55
+  buf3[0] = 0x55
+  buf3[1] = 0x55
+  buf3[2] = 0x55
+  buf3[3] = 0x55
+  buf3[4] = 0xd5
+  buf3[5] = 0x3f
+
+  bl.append(buf1)
+  bl.append(buf2)
+  bl.append(buf3)
+
+  t.equal(bl.readDoubleLE(2), 0.3333333333333333)
+
+  t.end()
+})
+
+tape('test toString', function (t) {
+  const bl = new BufferList()
+
+  bl.append(Buffer.from('abcd'))
+  bl.append(Buffer.from('efg'))
+  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) {
+  const bl = new BufferList()
+  const 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) {
+  const random = crypto.randomBytes(65534)
+
+  const bl = new BufferList((err, buf) => {
+    t.ok(Buffer.isBuffer(buf))
+    t.ok(err === null)
+    t.ok(random.equals(bl.slice()))
+    t.ok(random.equals(buf.slice()))
+
+    bl.pipe(fs.createWriteStream('/tmp/bl_test_rnd_out.dat'))
+      .on('close', function () {
+        const rndhash = crypto.createHash('md5').update(random).digest('hex')
+        const md5sum = crypto.createHash('md5')
+        const 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) {
+  const buf = crypto.randomBytes(1024)
+  const buf2 = crypto.randomBytes(1024)
+  let 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) {
+  const bl = new BufferList()
+  const 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) {
+  const bl = new BufferList()
+  const 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)
+
+  const inp1 = '\u2600'
+  const inp2 = '\u2603'
+  const exp = inp1 + ' and ' + inp2
+  const 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) {
+  const source = BufferList()
+  const 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) {
+  const buf = crypto.randomBytes(1024)
+  const buf2 = Buffer.alloc(1024)
+  const 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) {
+  const buf = crypto.randomBytes(512)
+  const buf2 = Buffer.alloc(1024)
+  const 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) {
+  const buf = crypto.randomBytes(1004)
+  const buf2 = Buffer.alloc(1024)
+  const 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) {
+  const buf = crypto.randomBytes(10)
+  const buf2 = Buffer.alloc(5)
+  const 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) {
+  const rnd = crypto.randomBytes(10)
+  const b = BufferList(rnd) // put the random bytes there
+  const actual = Buffer.alloc(3)
+  const 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) {
+  const buf = crypto.randomBytes(10)
+  const buf2 = Buffer.alloc(10)
+  const 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) {
+  const 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)
+
+  const 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)
+
+  const 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)
+
+  const 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)
+
+  const buffers = [Buffer.from('First'), Buffer.from('Second'), Buffer.from('Third')]
+  const 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)
+
+  const buffers = [Buffer.from('First'), Buffer.from('Second'), Buffer.from('Third')]
+  const 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)
+
+  const buffers = [Buffer.from('First'), Buffer.from('Second'), Buffer.from('Third')]
+  const bl = (new BufferList(buffers)).shallowSlice(10, 10)
+
+  t.equal(bl.length, 0)
+})
+
+tape('duplicate', function (t) {
+  t.plan(2)
+
+  const bl = new BufferList('abcdefghij\xff\x00')
+  const 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)
+
+  const bl = new BufferList('alsdkfja;lsdkfja;lsdk')
+
+  bl.destroy()
+
+  t.equal(bl._bufs.length, 0)
+  t.equal(bl.length, 0)
+})
+
+tape('destroy with error', function (t) {
+  t.plan(3)
+
+  const bl = new BufferList('alsdkfja;lsdkfja;lsdk')
+  const err = new Error('kaboom')
+
+  bl.destroy(err)
+  bl.on('error', function (_err) {
+    t.equal(_err, err)
+  })
+
+  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)
+
+  const bl = new BufferList()
+  fs.createReadStream(path.join(__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)
+
+  const bl = new BufferList()
+
+  fs.createReadStream(path.join(__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)
+
+  const bl = new BufferList()
+
+  fs.createReadStream(path.join(__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)
+
+  const bl = new BufferList()
+  const ds = new BufferList()
+
+  fs.createReadStream(path.join(__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')
+  }))
+})