node/test/parallel/test-stream2-unpipe-drain.js
Tobias Nießen 3fe165ace6 test: use ES6 classes instead of util.inherits
PR-URL: https://github.com/nodejs/node/pull/16938
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
2017-11-12 10:29:45 -08:00

73 lines
2.0 KiB
JavaScript

// 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.
'use strict';
require('../common');
const assert = require('assert');
const stream = require('stream');
class TestWriter extends stream.Writable {
_write(buffer, encoding, callback) {
console.log('write called');
// super slow write stream (callback never called)
}
}
const dest = new TestWriter();
class TestReader extends stream.Readable {
constructor() {
super();
this.reads = 0;
}
_read(size) {
this.reads += 1;
this.push(Buffer.alloc(size));
}
}
const src1 = new TestReader();
const src2 = new TestReader();
src1.pipe(dest);
src1.once('readable', function() {
process.nextTick(function() {
src2.pipe(dest);
src2.once('readable', function() {
process.nextTick(function() {
src1.unpipe(dest);
});
});
});
});
process.on('exit', function() {
assert.strictEqual(src1.reads, 2);
assert.strictEqual(src2.reads, 2);
});