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diff --git a/addon-sdk/source/test/test-buffer.js b/addon-sdk/source/test/test-buffer.js
deleted file mode 100644
index e55bf2b2f..000000000
--- a/addon-sdk/source/test/test-buffer.js
+++ /dev/null
@@ -1,563 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-
-/*
- * Many of these tests taken from Joyent's Node
- * https://github.com/joyent/node/blob/master/test/simple/test-buffer.js
- */
-
-// Copyright Joyent, Inc. and other Node contributors.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a
-// copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to permit
-// persons to whom the Software is furnished to do so, subject to the
-// following conditions:
-//
-// The above copyright notice and this permission notice shall be included
-// in all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-// USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-const { Buffer, TextEncoder, TextDecoder } = require('sdk/io/buffer');
-const { safeMerge } = require('sdk/util/object');
-
-const ENCODINGS = ['utf-8'];
-
-exports.testBufferMain = function (assert) {
-  let b = Buffer('abcdef');
-
-  // try to create 0-length buffers
-  new Buffer('');
-  new Buffer(0);
-  // test encodings supported by node;
-  // this is different than what node supports, details
-  // in buffer.js
-  ENCODINGS.forEach(enc => {
-    new Buffer('', enc);
-    assert.pass('Creating a buffer with ' + enc + ' does not throw');
-  });
-
-  ENCODINGS.forEach(function(encoding) {
-    // Does not work with utf8
-    if (encoding === 'utf-8') return;
-    var b = new Buffer(10);
-    b.write('あいうえお', encoding);
-    assert.equal(b.toString(encoding), 'あいうえお',
-      'encode and decodes buffer with ' + encoding);
-  });
-
-  // invalid encoding for Buffer.toString
-  assert.throws(() => {
-    b.toString('invalid');
-  }, RangeError, 'invalid encoding for Buffer.toString');
-
-  // try to toString() a 0-length slice of a buffer, both within and without the
-  // valid buffer range
-  assert.equal(new Buffer('abc').toString('utf8', 0, 0), '',
-    'toString 0-length buffer, valid range');
-  assert.equal(new Buffer('abc').toString('utf8', -100, -100), '',
-    'toString 0-length buffer, invalid range');
-  assert.equal(new Buffer('abc').toString('utf8', 100, 100), '',
-    'toString 0-length buffer, invalid range');
-
-  // try toString() with a object as a encoding
-  assert.equal(new Buffer('abc').toString({toString: function() {
-    return 'utf8';
-  }}), 'abc', 'toString with object as an encoding');
-
-  // test for buffer overrun
-  var buf = new Buffer([0, 0, 0, 0, 0]); // length: 5
-  var sub = buf.slice(0, 4); // length: 4
-  var written = sub.write('12345', 'utf8');
-  assert.equal(written, 4, 'correct bytes written in slice');
-  assert.equal(buf[4], 0, 'correct origin buffer value');
-
-  // Check for fractional length args, junk length args, etc.
-  // https://github.com/joyent/node/issues/1758
-  Buffer(3.3).toString(); // throws bad argument error in commit 43cb4ec
-  assert.equal(Buffer(-1).length, 0);
-  assert.equal(Buffer(NaN).length, 0);
-  assert.equal(Buffer(3.3).length, 3);
-  assert.equal(Buffer({length: 3.3}).length, 3);
-  assert.equal(Buffer({length: 'BAM'}).length, 0);
-
-  // Make sure that strings are not coerced to numbers.
-  assert.equal(Buffer('99').length, 2);
-  assert.equal(Buffer('13.37').length, 5);
-};
-
-exports.testIsEncoding = function (assert) {
-  ENCODINGS.map(encoding => {
-    assert.ok(Buffer.isEncoding(encoding),
-      'Buffer.isEncoding ' + encoding + ' truthy');
-  });
-  ['not-encoding', undefined, null, 100, {}].map(encoding => {
-    assert.ok(!Buffer.isEncoding(encoding),
-      'Buffer.isEncoding ' + encoding + ' falsy');
-  });
-};
-
-exports.testBufferCopy = function (assert) {
-  // counter to ensure unique value is always copied
-  var cntr = 0;
-  var b = Buffer(1024); // safe constructor
-
-  assert.strictEqual(1024, b.length);
-  b[0] = -1;
-  assert.strictEqual(b[0], 255);
-
-  var shimArray = [];
-  for (var i = 0; i < 1024; i++) {
-    b[i] = i % 256;
-    shimArray[i] = i % 256;
-  }
-
-  compareBuffers(assert, b, shimArray, 'array notation');
-
-  var c = new Buffer(512);
-  assert.strictEqual(512, c.length);
-  // copy 512 bytes, from 0 to 512.
-  b.fill(++cntr);
-  c.fill(++cntr);
-  var copied = b.copy(c, 0, 0, 512);
-  assert.strictEqual(512, copied,
-    'copied ' + copied + ' bytes from b into c');
-
-  compareBuffers(assert, b, c, 'copied to other buffer');
-
-  // copy c into b, without specifying sourceEnd
-  b.fill(++cntr);
-  c.fill(++cntr);
-  var copied = c.copy(b, 0, 0);
-  assert.strictEqual(c.length, copied,
-    'copied ' + copied + ' bytes from c into b w/o sourceEnd');
-  compareBuffers(assert, b, c,
-    'copied to other buffer without specifying sourceEnd');
-
-  // copy c into b, without specifying sourceStart
-  b.fill(++cntr);
-  c.fill(++cntr);
-  var copied = c.copy(b, 0);
-  assert.strictEqual(c.length, copied,
-    'copied ' + copied + ' bytes from c into b w/o sourceStart');
-  compareBuffers(assert, b, c,
-    'copied to other buffer without specifying sourceStart');
-
-  // copy longer buffer b to shorter c without targetStart
-  b.fill(++cntr);
-  c.fill(++cntr);
-
-  var copied = b.copy(c);
-  assert.strictEqual(c.length, copied,
-    'copied ' + copied + ' bytes from b into c w/o targetStart');
-  compareBuffers(assert, b, c,
-    'copy long buffer to shorter buffer without targetStart');
-
-  // copy starting near end of b to c
-  b.fill(++cntr);
-  c.fill(++cntr);
-  var copied = b.copy(c, 0, b.length - Math.floor(c.length / 2));
-  assert.strictEqual(Math.floor(c.length / 2), copied,
-    'copied ' + copied + ' bytes from end of b into beg. of c');
-
-  let successStatus = true;
-  for (var i = 0; i < Math.floor(c.length / 2); i++) {
-    if (b[b.length - Math.floor(c.length / 2) + i] !== c[i])
-      successStatus = false;
-  }
-
-  for (var i = Math.floor(c.length /2) + 1; i < c.length; i++) {
-    if (c[c.length-1] !== c[i])
-      successStatus = false;
-  }
-  assert.ok(successStatus,
-    'Copied bytes from end of large buffer into beginning of small buffer');
-
-  // try to copy 513 bytes, and check we don't overrun c
-  b.fill(++cntr);
-  c.fill(++cntr);
-  var copied = b.copy(c, 0, 0, 513);
-  assert.strictEqual(c.length, copied,
-    'copied ' + copied + ' bytes from b trying to overrun c');
-  compareBuffers(assert, b, c,
-    'copying to buffer that would overflow');
-
-  // copy 768 bytes from b into b
-  b.fill(++cntr);
-  b.fill(++cntr, 256);
-  var copied = b.copy(b, 0, 256, 1024);
-  assert.strictEqual(768, copied,
-    'copied ' + copied + ' bytes from b into b');
-
-  compareBuffers(assert, b, shimArray.map(()=>cntr),
-    'copy partial buffer to itself');
-
-  // copy string longer than buffer length (failure will segfault)
-  var bb = new Buffer(10);
-  bb.fill('hello crazy world');
-
-  // copy throws at negative sourceStart
-  assert.throws(function() {
-    Buffer(5).copy(Buffer(5), 0, -1);
-  }, RangeError, 'buffer copy throws at negative sourceStart');
-
-  // check sourceEnd resets to targetEnd if former is greater than the latter
-  b.fill(++cntr);
-  c.fill(++cntr);
-  var copied = b.copy(c, 0, 0, 1025);
-  assert.strictEqual(copied, c.length,
-    'copied ' + copied + ' bytes from b into c');
-  compareBuffers(assert, b, c, 'copying should reset sourceEnd if targetEnd if sourceEnd > targetEnd');
-
-  // throw with negative sourceEnd
-  assert.throws(function() {
-    b.copy(c, 0, 0, -1);
-  }, RangeError, 'buffer copy throws at negative sourceEnd');
-
-  // when sourceStart is greater than sourceEnd, zero copied
-  assert.equal(b.copy(c, 0, 100, 10), 0);
-
-  // when targetStart > targetLength, zero copied
-  assert.equal(b.copy(c, 512, 0, 10), 0);
-
-  // try to copy 0 bytes worth of data into an empty buffer
-  b.copy(new Buffer(0), 0, 0, 0);
-
-  // try to copy 0 bytes past the end of the target buffer
-  b.copy(new Buffer(0), 1, 1, 1);
-  b.copy(new Buffer(1), 1, 1, 1);
-
-  // try to copy 0 bytes from past the end of the source buffer
-  b.copy(new Buffer(1), 0, 2048, 2048);
-};
-
-exports.testBufferWrite = function (assert) {
-  let b = Buffer(1024);
-  b.fill(0);
-
-  // try to write a 0-length string beyond the end of b
-  assert.throws(function() {
-    b.write('', 2048);
-  }, RangeError, 'writing a 0-length string beyond buffer throws');
-  // throw when writing to negative offset
-  assert.throws(function() {
-    b.write('a', -1);
-  }, RangeError, 'writing negative offset on buffer throws');
-
-  // throw when writing past bounds from the pool
-  assert.throws(function() {
-    b.write('a', 2048);
-  }, RangeError, 'writing past buffer bounds from pool throws');
-
-  // testing for smart defaults and ability to pass string values as offset
-
-  // previous write API was the following:
-  // write(string, encoding, offset, length)
-  // this is planned on being removed in node v0.13,
-  // we will not support it
-  var writeTest = new Buffer('abcdes');
-  writeTest.write('n', 'utf8');
-//  writeTest.write('o', 'utf8', '1');
-  writeTest.write('d', '2', 'utf8');
-  writeTest.write('e', 3, 'utf8');
-//  writeTest.write('j', 'utf8', 4);
-  assert.equal(writeTest.toString(), 'nbdees',
-    'buffer write API alternative syntax works');
-};
-
-exports.testBufferWriteEncoding = function (assert) {
-
-  // Node #1210 Test UTF-8 string includes null character
-  var buf = new Buffer('\0');
-  assert.equal(buf.length, 1);
-  buf = new Buffer('\0\0');
-  assert.equal(buf.length, 2);
-
-  buf = new Buffer(2);
-  var written = buf.write(''); // 0byte
-  assert.equal(written, 0);
-  written = buf.write('\0'); // 1byte (v8 adds null terminator)
-  assert.equal(written, 1);
-  written = buf.write('a\0'); // 1byte * 2
-  assert.equal(written, 2);
-  // TODO, these tests write 0, possibly due to character encoding
-/*
-  written = buf.write('あ'); // 3bytes
-  assert.equal(written, 0);
-  written = buf.write('\0あ'); // 1byte + 3bytes
-  assert.equal(written, 1);
-*/
-  written = buf.write('\0\0あ'); // 1byte * 2 + 3bytes
-  buf = new Buffer(10);
-  written = buf.write('あいう'); // 3bytes * 3 (v8 adds null terminator)
-  assert.equal(written, 9);
-  written = buf.write('あいう\0'); // 3bytes * 3 + 1byte
-  assert.equal(written, 10);
-};
-
-exports.testBufferWriteWithMaxLength = function (assert) {
-  // Node #243 Test write() with maxLength
-  var buf = new Buffer(4);
-  buf.fill(0xFF);
-  var written = buf.write('abcd', 1, 2, 'utf8');
-  assert.equal(written, 2);
-  assert.equal(buf[0], 0xFF);
-  assert.equal(buf[1], 0x61);
-  assert.equal(buf[2], 0x62);
-  assert.equal(buf[3], 0xFF);
-
-  buf.fill(0xFF);
-  written = buf.write('abcd', 1, 4);
-  assert.equal(written, 3);
-  assert.equal(buf[0], 0xFF);
-  assert.equal(buf[1], 0x61);
-  assert.equal(buf[2], 0x62);
-  assert.equal(buf[3], 0x63);
-
-  buf.fill(0xFF);
-  // Ignore legacy API
-  /*
-     written = buf.write('abcd', 'utf8', 1, 2); // legacy style
-     console.log(buf);
-     assert.equal(written, 2);
-     assert.equal(buf[0], 0xFF);
-     assert.equal(buf[1], 0x61);
-     assert.equal(buf[2], 0x62);
-     assert.equal(buf[3], 0xFF);
-     */
-};
-
-exports.testBufferSlice = function (assert) {
-  var asciiString = 'hello world';
-  var offset = 100;
-  var b = Buffer(1024);
-  b.fill(0);
-
-  for (var i = 0; i < asciiString.length; i++) {
-    b[i] = asciiString.charCodeAt(i);
-  }
-  var asciiSlice = b.toString('utf8', 0, asciiString.length);
-  assert.equal(asciiString, asciiSlice);
-
-  var written = b.write(asciiString, offset, 'utf8');
-  assert.equal(asciiString.length, written);
-  asciiSlice = b.toString('utf8', offset, offset + asciiString.length);
-  assert.equal(asciiString, asciiSlice);
-
-  var sliceA = b.slice(offset, offset + asciiString.length);
-  var sliceB = b.slice(offset, offset + asciiString.length);
-  compareBuffers(assert, sliceA, sliceB,
-    'slicing is idempotent');
-
-  let sliceTest = true;
-  for (var j = 0; j < 100; j++) {
-    var slice = b.slice(100, 150);
-    if (50 !== slice.length)
-      sliceTest = false;
-    for (var i = 0; i < 50; i++) {
-      if (b[100 + i] !== slice[i])
-        sliceTest = false;
-    }
-  }
-  assert.ok(sliceTest, 'massive slice runs do not affect buffer');
-
-  // Single argument slice
-  let testBuf = new Buffer('abcde');
-  assert.equal('bcde', testBuf.slice(1).toString(), 'single argument slice');
-
-  // slice(0,0).length === 0
-  assert.equal(0, Buffer('hello').slice(0, 0).length, 'slice(0,0) === 0');
-
-  var buf = new Buffer('0123456789');
-  assert.equal(buf.slice(-10, 10), '0123456789', 'buffer slice range correct');
-  assert.equal(buf.slice(-20, 10), '0123456789', 'buffer slice range correct');
-  assert.equal(buf.slice(-20, -10), '', 'buffer slice range correct');
-  assert.equal(buf.slice(0, -1), '012345678', 'buffer slice range correct');
-  assert.equal(buf.slice(2, -2), '234567', 'buffer slice range correct');
-  assert.equal(buf.slice(0, 65536), '0123456789', 'buffer slice range correct');
-  assert.equal(buf.slice(65536, 0), '', 'buffer slice range correct');
-
-  sliceTest = true;
-  for (var i = 0, s = buf.toString(); i < buf.length; ++i) {
-    if (buf.slice(-i) != s.slice(-i)) sliceTest = false;
-    if (buf.slice(0, -i) != s.slice(0, -i)) sliceTest = false;
-  }
-  assert.ok(sliceTest, 'buffer.slice should be consistent');
-
-  // Make sure modifying a sliced buffer, affects original and vice versa
-  b.fill(0);
-  let sliced = b.slice(0, 10);
-  let babyslice = sliced.slice(0, 5);
-
-  for (let i = 0; i < sliced.length; i++)
-    sliced[i] = 'jetpack'.charAt(i);
-
-  compareBuffers(assert, b, sliced,
-    'modifying sliced buffer affects original');
-
-  compareBuffers(assert, b, babyslice,
-    'modifying sliced buffer affects child-sliced buffer');
-
-  for (let i = 0; i < sliced.length; i++)
-    b[i] = 'odinmonkey'.charAt(i);
-
-  compareBuffers(assert, b, sliced,
-    'modifying original buffer affects sliced');
-
-  compareBuffers(assert, b, babyslice,
-    'modifying original buffer affects grandchild sliced buffer');
-};
-
-exports.testSlicingParents = function (assert) {
-  let root = Buffer(5);
-  let child = root.slice(0, 4);
-  let grandchild = child.slice(0, 3);
-
-  assert.equal(root.parent, undefined, 'a new buffer should not have a parent');
-
-  // make sure a zero length slice doesn't set the .parent attribute
-  assert.equal(root.slice(0,0).parent, undefined,
-    '0-length slice should not have a parent');
-
-  assert.equal(child.parent, root,
-    'a valid slice\'s parent should be the original buffer (child)');
-
-  assert.equal(grandchild.parent, root,
-    'a valid slice\'s parent should be the original buffer (grandchild)');
-};
-
-exports.testIsBuffer = function (assert) {
-  let buffer = new Buffer('content', 'utf8');
-  assert.ok(Buffer.isBuffer(buffer), 'isBuffer truthy on buffers');
-  assert.ok(!Buffer.isBuffer({}), 'isBuffer falsy on objects');
-  assert.ok(!Buffer.isBuffer(new Uint8Array()),
-    'isBuffer falsy on Uint8Array');
-  assert.ok(Buffer.isBuffer(buffer.slice(0)), 'Buffer#slice should be a new buffer');
-};
-
-exports.testBufferConcat = function (assert) {
-  let zero = [];
-  let one = [ new Buffer('asdf') ];
-  let long = [];
-  for (let i = 0; i < 10; i++) long.push(new Buffer('asdf'));
-
-  let flatZero = Buffer.concat(zero);
-  let flatOne = Buffer.concat(one);
-  let flatLong = Buffer.concat(long);
-  let flatLongLen = Buffer.concat(long, 40);
-
-  assert.equal(flatZero.length, 0);
-  assert.equal(flatOne.toString(), 'asdf');
-  assert.equal(flatOne, one[0]);
-  assert.equal(flatLong.toString(), (new Array(10+1).join('asdf')));
-  assert.equal(flatLongLen.toString(), (new Array(10+1).join('asdf')));
-};
-
-exports.testBufferByteLength = function (assert) {
-  let str = '\u00bd + \u00bc = \u00be';
-  assert.equal(Buffer.byteLength(str), 12,
-    'correct byteLength of string');
-
-  assert.equal(14, Buffer.byteLength('Il était tué'));
-  assert.equal(14, Buffer.byteLength('Il était tué', 'utf8'));
-  // We do not currently support these encodings
-  /*
-  ['ucs2', 'ucs-2', 'utf16le', 'utf-16le'].forEach(function(encoding) {
-  assert.equal(24, Buffer.byteLength('Il était tué', encoding));
-  });
-  assert.equal(12, Buffer.byteLength('Il était tué', 'ascii'));
-  assert.equal(12, Buffer.byteLength('Il était tué', 'binary'));
-  */
-};
-
-exports.testTextEncoderDecoder = function (assert) {
-  assert.ok(TextEncoder, 'TextEncoder exists');
-  assert.ok(TextDecoder, 'TextDecoder exists');
-};
-
-exports.testOverflowedBuffers = function (assert) {
-  assert.throws(function() {
-    new Buffer(0xFFFFFFFF);
-  }, RangeError, 'correctly throws buffer overflow');
-
-  assert.throws(function() {
-    new Buffer(0xFFFFFFFFF);
-  }, RangeError, 'correctly throws buffer overflow');
-
-  assert.throws(function() {
-    var buf = new Buffer(8);
-    buf.readFloatLE(0xffffffff);
-  }, RangeError, 'correctly throws buffer overflow with readFloatLE');
-
-  assert.throws(function() {
-    var buf = new Buffer(8);
-    buf.writeFloatLE(0.0, 0xffffffff);
-  }, RangeError, 'correctly throws buffer overflow with writeFloatLE');
-
-  //ensure negative values can't get past offset
-  assert.throws(function() {
-    var buf = new Buffer(8);
-    buf.readFloatLE(-1);
-  }, RangeError, 'correctly throws with readFloatLE negative values');
-
-  assert.throws(function() {
-    var buf = new Buffer(8);
-    buf.writeFloatLE(0.0, -1);
-  }, RangeError, 'correctly throws with writeFloatLE with negative values');
-
-  assert.throws(function() {
-    var buf = new Buffer(8);
-    buf.readFloatLE(-1);
-  }, RangeError, 'correctly throws with readFloatLE with negative values');
-};
-
-exports.testReadWriteDataTypeErrors = function (assert) {
-  var buf = new Buffer(0);
-  assert.throws(function() { buf.readUInt8(0); }, RangeError,
-    'readUInt8(0) throws');
-  assert.throws(function() { buf.readInt8(0); }, RangeError,
-    'readInt8(0) throws');
-
-  [16, 32].forEach(function(bits) {
-    var buf = new Buffer(bits / 8 - 1);
-    assert.throws(function() { buf['readUInt' + bits + 'BE'](0); },
-      RangeError,
-      'readUInt' + bits + 'BE');
-
-    assert.throws(function() { buf['readUInt' + bits + 'LE'](0); },
-      RangeError,
-      'readUInt' + bits + 'LE');
-
-    assert.throws(function() { buf['readInt' + bits + 'BE'](0); },
-      RangeError,
-      'readInt' + bits + 'BE()');
-
-    assert.throws(function() { buf['readInt' + bits + 'LE'](0); },
-      RangeError,
-      'readInt' + bits + 'LE()');
-  });
-};
-
-safeMerge(exports, require('./buffers/test-write-types'));
-safeMerge(exports, require('./buffers/test-read-types'));
-
-function compareBuffers (assert, buf1, buf2, message) {
-  let status = true;
-  for (let i = 0; i < Math.min(buf1.length, buf2.length); i++) {
-    if (buf1[i] !== buf2[i])
-      status = false;
-  }
-  assert.ok(status, 'buffer successfully copied: ' + message);
-}
-require('sdk/test').run(exports);