| // 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. |
| |
| var common = require('../common'); |
| var assert = require('assert'); |
| |
| var Readable = require('_stream_readable'); |
| var Writable = require('_stream_writable'); |
| var EE = require('events').EventEmitter; |
| |
| var testRuns = 0, completedRuns = 0; |
| function runTest(highWaterMark, objectMode, produce) { |
| testRuns++; |
| |
| var old = new EE; |
| var r = new Readable({ highWaterMark: highWaterMark, objectMode: objectMode }); |
| assert.equal(r, r.wrap(old)); |
| |
| var ended = false; |
| r.on('end', function() { |
| ended = true; |
| }); |
| |
| var pauses = 0; |
| var resumes = 0; |
| |
| old.pause = function() { |
| pauses++; |
| old.emit('pause'); |
| flowing = false; |
| }; |
| |
| old.resume = function() { |
| resumes++; |
| old.emit('resume'); |
| flow(); |
| }; |
| |
| var flowing; |
| var chunks = 10; |
| var oldEnded = false; |
| var expected = []; |
| function flow() { |
| flowing = true; |
| while (flowing && chunks-- > 0) { |
| var item = produce(); |
| expected.push(item); |
| console.log('emit', chunks); |
| old.emit('data', item); |
| } |
| if (chunks <= 0) { |
| oldEnded = true; |
| console.log('old end', chunks, flowing); |
| old.emit('end'); |
| } |
| } |
| |
| var w = new Writable({ highWaterMark: highWaterMark * 2, objectMode: objectMode }); |
| var written = []; |
| w._write = function(chunk, encoding, cb) { |
| console.log(chunk); |
| written.push(chunk); |
| setTimeout(cb); |
| }; |
| |
| w.on('finish', function() { |
| completedRuns++; |
| performAsserts(); |
| }); |
| |
| r.pipe(w); |
| |
| flow(); |
| |
| function performAsserts() { |
| assert(ended); |
| assert(oldEnded); |
| assert.deepEqual(written, expected); |
| assert.equal(pauses, 10); |
| assert.equal(resumes, 9); |
| } |
| } |
| |
| runTest(10, false, function(){ return new Buffer('xxxxxxxxxx'); }); |
| runTest(1, true, function(){ return { foo: 'bar' }; }); |
| |
| process.on('exit', function() { |
| assert.equal(testRuns, completedRuns); |
| console.log('ok'); |
| }); |