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author | Fedor Indutny <fedor@indutny.com> | 2014-12-17 20:30:04 +0700 |
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committer | Fedor Indutny <fedor@indutny.com> | 2014-12-17 20:45:02 +0700 |
commit | 0e19476595729c850f07befea93e864822cd8459 (patch) | |
tree | a868c3dd1becd87b7b5ea9fd2b645dd61e68ae8c /test/parallel/test-zlib-random-byte-pipes.js | |
parent | 165b70f146e163b82a09bb869463708516c08cf6 (diff) | |
download | android-node-v8-0e19476595729c850f07befea93e864822cd8459.tar.gz android-node-v8-0e19476595729c850f07befea93e864822cd8459.tar.bz2 android-node-v8-0e19476595729c850f07befea93e864822cd8459.zip |
test: split test in parallel/sequential
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
PR-URL: https://github.com/iojs/io.js/pull/172
Fix: iojs/io.js#139
Diffstat (limited to 'test/parallel/test-zlib-random-byte-pipes.js')
-rw-r--r-- | test/parallel/test-zlib-random-byte-pipes.js | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/test/parallel/test-zlib-random-byte-pipes.js b/test/parallel/test-zlib-random-byte-pipes.js new file mode 100644 index 0000000000..fc1db1cbba --- /dev/null +++ b/test/parallel/test-zlib-random-byte-pipes.js @@ -0,0 +1,181 @@ +// 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 crypto = require('crypto'); +var stream = require('stream'); +var Stream = stream.Stream; +var util = require('util'); +var assert = require('assert'); +var zlib = require('zlib'); + + + +// emit random bytes, and keep a shasum +function RandomReadStream(opt) { + Stream.call(this); + + this.readable = true; + this._paused = false; + this._processing = false; + + this._hasher = crypto.createHash('sha1'); + opt = opt || {}; + + // base block size. + opt.block = opt.block || 256 * 1024; + + // total number of bytes to emit + opt.total = opt.total || 256 * 1024 * 1024; + this._remaining = opt.total; + + // how variable to make the block sizes + opt.jitter = opt.jitter || 1024; + + this._opt = opt; + + this._process = this._process.bind(this); + + process.nextTick(this._process); +} + +util.inherits(RandomReadStream, Stream); + +RandomReadStream.prototype.pause = function() { + this._paused = true; + this.emit('pause'); +}; + +RandomReadStream.prototype.resume = function() { + // console.error("rrs resume"); + this._paused = false; + this.emit('resume'); + this._process(); +}; + +RandomReadStream.prototype._process = function() { + if (this._processing) return; + if (this._paused) return; + + this._processing = true; + + if (!this._remaining) { + this._hash = this._hasher.digest('hex').toLowerCase().trim(); + this._processing = false; + + this.emit('end'); + return; + } + + // figure out how many bytes to output + // if finished, then just emit end. + var block = this._opt.block; + var jitter = this._opt.jitter; + if (jitter) { + block += Math.ceil(Math.random() * jitter - (jitter / 2)); + } + block = Math.min(block, this._remaining); + var buf = new Buffer(block); + for (var i = 0; i < block; i++) { + buf[i] = Math.random() * 256; + } + + this._hasher.update(buf); + + this._remaining -= block; + + console.error('block=%d\nremain=%d\n', block, this._remaining); + this._processing = false; + + this.emit('data', buf); + process.nextTick(this._process); +}; + + +// a filter that just verifies a shasum +function HashStream() { + Stream.call(this); + + this.readable = this.writable = true; + this._hasher = crypto.createHash('sha1'); +} + +util.inherits(HashStream, Stream); + +HashStream.prototype.write = function(c) { + // Simulate the way that an fs.ReadStream returns false + // on *every* write like a jerk, only to resume a + // moment later. + this._hasher.update(c); + process.nextTick(this.resume.bind(this)); + return false; +}; + +HashStream.prototype.resume = function() { + this.emit('resume'); + process.nextTick(this.emit.bind(this, 'drain')); +}; + +HashStream.prototype.end = function(c) { + if (c) { + this.write(c); + } + this._hash = this._hasher.digest('hex').toLowerCase().trim(); + this.emit('data', this._hash); + this.emit('end'); +}; + + + + +var inp = new RandomReadStream({ total: 1024, block: 256, jitter: 16 }); +var out = new HashStream(); +var gzip = zlib.createGzip(); +var gunz = zlib.createGunzip(); + +inp.pipe(gzip).pipe(gunz).pipe(out); + +inp.on('data', function(c) { + console.error('inp data', c.length); +}); + +gzip.on('data', function(c) { + console.error('gzip data', c.length); +}); + +gunz.on('data', function(c) { + console.error('gunz data', c.length); +}); + +out.on('data', function(c) { + console.error('out data', c.length); +}); + +var didSomething = false; +out.on('data', function(c) { + didSomething = true; + console.error('hash=%s', c); + assert.equal(c, inp._hash, 'hashes should match'); +}); + +process.on('exit', function() { + assert(didSomething, 'should have done something'); +}); |