diff options
Diffstat (limited to 'test/parallel/test-stream2-readable-empty-buffer-no-eof.js')
-rw-r--r-- | test/parallel/test-stream2-readable-empty-buffer-no-eof.js | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/test/parallel/test-stream2-readable-empty-buffer-no-eof.js b/test/parallel/test-stream2-readable-empty-buffer-no-eof.js new file mode 100644 index 0000000000..d52af5edb8 --- /dev/null +++ b/test/parallel/test-stream2-readable-empty-buffer-no-eof.js @@ -0,0 +1,118 @@ +// 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; + +test1(); +test2(); + +function test1() { + var r = new Readable(); + + // should not end when we get a Buffer(0) or '' as the _read result + // that just means that there is *temporarily* no data, but to go + // ahead and try again later. + // + // note that this is very unusual. it only works for crypto streams + // because the other side of the stream will call read(0) to cycle + // data through openssl. that's why we set the timeouts to call + // r.read(0) again later, otherwise there is no more work being done + // and the process just exits. + + var buf = new Buffer(5); + buf.fill('x'); + var reads = 5; + r._read = function(n) { + switch (reads--) { + case 0: + return r.push(null); // EOF + case 1: + return r.push(buf); + case 2: + setTimeout(r.read.bind(r, 0), 50); + return r.push(new Buffer(0)); // Not-EOF! + case 3: + setTimeout(r.read.bind(r, 0), 50); + return process.nextTick(function() { + return r.push(new Buffer(0)); + }); + case 4: + setTimeout(r.read.bind(r, 0), 50); + return setTimeout(function() { + return r.push(new Buffer(0)); + }); + case 5: + return setTimeout(function() { + return r.push(buf); + }); + default: + throw new Error('unreachable'); + } + }; + + var results = []; + function flow() { + var chunk; + while (null !== (chunk = r.read())) + results.push(chunk + ''); + } + r.on('readable', flow); + r.on('end', function() { + results.push('EOF'); + }); + flow(); + + process.on('exit', function() { + assert.deepEqual(results, [ 'xxxxx', 'xxxxx', 'EOF' ]); + console.log('ok'); + }); +} + +function test2() { + var r = new Readable({ encoding: 'base64' }); + var reads = 5; + r._read = function(n) { + if (!reads--) + return r.push(null); // EOF + else + return r.push(new Buffer('x')); + }; + + var results = []; + function flow() { + var chunk; + while (null !== (chunk = r.read())) + results.push(chunk + ''); + } + r.on('readable', flow); + r.on('end', function() { + results.push('EOF'); + }); + flow(); + + process.on('exit', function() { + assert.deepEqual(results, [ 'eHh4', 'eHg=', 'EOF' ]); + console.log('ok'); + }); +} |