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73 lines
2.4 KiB
73 lines
2.4 KiB
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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'use strict';
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const common = require('../common');
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const assert = require('assert');
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const Readable = require('_stream_readable');
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const Writable = require('_stream_writable');
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const util = require('util');
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util.inherits(TestReadable, Readable);
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function TestReadable(opt) {
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if (!(this instanceof TestReadable))
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return new TestReadable(opt);
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Readable.call(this, opt);
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this._ended = false;
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}
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TestReadable.prototype._read = function() {
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if (this._ended)
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this.emit('error', new Error('_read called twice'));
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this._ended = true;
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this.push(null);
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};
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util.inherits(TestWritable, Writable);
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function TestWritable(opt) {
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if (!(this instanceof TestWritable))
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return new TestWritable(opt);
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Writable.call(this, opt);
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this._written = [];
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}
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TestWritable.prototype._write = function(chunk, encoding, cb) {
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this._written.push(chunk);
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cb();
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};
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// this one should not emit 'end' until we read() from it later.
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const ender = new TestReadable();
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// what happens when you pipe() a Readable that's already ended?
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const piper = new TestReadable();
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// pushes EOF null, and length=0, so this will trigger 'end'
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piper.read();
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setTimeout(common.mustCall(function() {
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ender.on('end', common.mustCall());
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const c = ender.read();
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assert.strictEqual(c, null);
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const w = new TestWritable();
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w.on('finish', common.mustCall());
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piper.pipe(w);
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}), 1);
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