| // 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. |
| |
| // This test asserts that Stream.prototype.pipe does not leave listeners |
| // hanging on the source or dest. |
| |
| var common = require('../common'); |
| var stream = require('stream'); |
| var assert = require('assert'); |
| var util = require('util'); |
| |
| function Writable() { |
| this.writable = true; |
| this.endCalls = 0; |
| stream.Stream.call(this); |
| } |
| util.inherits(Writable, stream.Stream); |
| Writable.prototype.end = function() { |
| this.endCalls++; |
| }; |
| |
| Writable.prototype.destroy = function() { |
| this.endCalls++; |
| }; |
| |
| function Readable() { |
| this.readable = true; |
| stream.Stream.call(this); |
| } |
| util.inherits(Readable, stream.Stream); |
| |
| function Duplex() { |
| this.readable = true; |
| Writable.call(this); |
| } |
| util.inherits(Duplex, Writable); |
| |
| var i = 0; |
| var limit = 100; |
| |
| var w = new Writable(); |
| |
| var r; |
| |
| for (i = 0; i < limit; i++) { |
| r = new Readable(); |
| r.pipe(w); |
| r.emit('end'); |
| } |
| assert.equal(0, r.listeners('end').length); |
| assert.equal(limit, w.endCalls); |
| |
| w.endCalls = 0; |
| |
| for (i = 0; i < limit; i++) { |
| r = new Readable(); |
| r.pipe(w); |
| r.emit('close'); |
| } |
| assert.equal(0, r.listeners('close').length); |
| assert.equal(limit, w.endCalls); |
| |
| w.endCalls = 0; |
| |
| r = new Readable(); |
| |
| for (i = 0; i < limit; i++) { |
| w = new Writable(); |
| r.pipe(w); |
| w.emit('close'); |
| } |
| assert.equal(0, w.listeners('close').length); |
| |
| r = new Readable(); |
| w = new Writable(); |
| var d = new Duplex(); |
| r.pipe(d); // pipeline A |
| d.pipe(w); // pipeline B |
| assert.equal(r.listeners('end').length, 2); // A.onend, A.cleanup |
| assert.equal(r.listeners('close').length, 2); // A.onclose, A.cleanup |
| assert.equal(d.listeners('end').length, 2); // B.onend, B.cleanup |
| assert.equal(d.listeners('close').length, 3); // A.cleanup, B.onclose, B.cleanup |
| assert.equal(w.listeners('end').length, 0); |
| assert.equal(w.listeners('close').length, 1); // B.cleanup |
| |
| r.emit('end'); |
| assert.equal(d.endCalls, 1); |
| assert.equal(w.endCalls, 0); |
| assert.equal(r.listeners('end').length, 0); |
| assert.equal(r.listeners('close').length, 0); |
| assert.equal(d.listeners('end').length, 2); // B.onend, B.cleanup |
| assert.equal(d.listeners('close').length, 2); // B.onclose, B.cleanup |
| assert.equal(w.listeners('end').length, 0); |
| assert.equal(w.listeners('close').length, 1); // B.cleanup |
| |
| d.emit('end'); |
| assert.equal(d.endCalls, 1); |
| assert.equal(w.endCalls, 1); |
| assert.equal(r.listeners('end').length, 0); |
| assert.equal(r.listeners('close').length, 0); |
| assert.equal(d.listeners('end').length, 0); |
| assert.equal(d.listeners('close').length, 0); |
| assert.equal(w.listeners('end').length, 0); |
| assert.equal(w.listeners('close').length, 0); |