85ab4a5f12
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>
107 lines
2.3 KiB
JavaScript
107 lines
2.3 KiB
JavaScript
'use strict';
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require('../common');
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var assert = require('assert');
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var Readable = require('stream').Readable;
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(function first() {
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// First test, not reading when the readable is added.
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// make sure that on('readable', ...) triggers a readable event.
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var r = new Readable({
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highWaterMark: 3
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});
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var _readCalled = false;
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r._read = function(n) {
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_readCalled = true;
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};
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// This triggers a 'readable' event, which is lost.
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r.push(Buffer.from('blerg'));
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var caughtReadable = false;
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setTimeout(function() {
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// we're testing what we think we are
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assert(!r._readableState.reading);
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r.on('readable', function() {
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caughtReadable = true;
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});
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});
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process.on('exit', function() {
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// we're testing what we think we are
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assert(!_readCalled);
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assert(caughtReadable);
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console.log('ok 1');
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});
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})();
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(function second() {
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// second test, make sure that readable is re-emitted if there's
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// already a length, while it IS reading.
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var r = new Readable({
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highWaterMark: 3
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});
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var _readCalled = false;
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r._read = function(n) {
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_readCalled = true;
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};
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// This triggers a 'readable' event, which is lost.
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r.push(Buffer.from('bl'));
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var caughtReadable = false;
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setTimeout(function() {
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// assert we're testing what we think we are
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assert(r._readableState.reading);
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r.on('readable', function() {
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caughtReadable = true;
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});
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});
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process.on('exit', function() {
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// we're testing what we think we are
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assert(_readCalled);
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assert(caughtReadable);
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console.log('ok 2');
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});
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})();
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(function third() {
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// Third test, not reading when the stream has not passed
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// the highWaterMark but *has* reached EOF.
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var r = new Readable({
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highWaterMark: 30
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});
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var _readCalled = false;
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r._read = function(n) {
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_readCalled = true;
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};
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// This triggers a 'readable' event, which is lost.
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r.push(Buffer.from('blerg'));
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r.push(null);
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var caughtReadable = false;
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setTimeout(function() {
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// assert we're testing what we think we are
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assert(!r._readableState.reading);
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r.on('readable', function() {
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caughtReadable = true;
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});
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});
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process.on('exit', function() {
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// we're testing what we think we are
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assert(!_readCalled);
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assert(caughtReadable);
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console.log('ok 3');
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});
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})();
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