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nodejs/test/parallel/test-buffer-fakes.js
James M Snell 85ab4a5f12 buffer: add .from(), .alloc() and .allocUnsafe()
Several changes:

* Soft-Deprecate Buffer() constructors
* Add `Buffer.from()`, `Buffer.alloc()`, and `Buffer.allocUnsafe()`
* Add `--zero-fill-buffers` command line option
* Add byteOffset and length to `new Buffer(arrayBuffer)` constructor
* buffer.fill('') previously had no effect, now zero-fills
* Update the docs

PR-URL: https://github.com/nodejs/node/pull/4682
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
2016-03-16 08:34:02 -07:00

56 lines
994 B
JavaScript

'use strict';
require('../common');
const assert = require('assert');
const Buffer = require('buffer').Buffer;
function FakeBuffer() { }
Object.setPrototypeOf(FakeBuffer, Buffer);
Object.setPrototypeOf(FakeBuffer.prototype, Buffer.prototype);
const fb = new FakeBuffer();
assert.throws(function() {
Buffer.from(fb);
}, TypeError);
assert.throws(function() {
+Buffer.prototype;
}, TypeError);
assert.throws(function() {
Buffer.compare(fb, Buffer.alloc(0));
}, TypeError);
assert.throws(function() {
fb.write('foo');
}, TypeError);
assert.throws(function() {
Buffer.concat([fb, fb]);
}, TypeError);
assert.throws(function() {
fb.toString();
}, TypeError);
assert.throws(function() {
fb.equals(Buffer.alloc(0));
}, TypeError);
assert.throws(function() {
fb.indexOf(5);
}, TypeError);
assert.throws(function() {
fb.readFloatLE(0);
}, TypeError);
assert.throws(function() {
fb.writeFloatLE(0);
}, TypeError);
assert.throws(function() {
fb.fill(0);
}, TypeError);