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nodejs/test/parallel/test-stream2-push.js
Roman Reiss f29762f4dd test: enable linting for tests
Enable linting for the test directory. A number of changes was made so
all tests conform the current rules used by lib and src directories. The
only exception for tests is that unreachable (dead) code is allowed.

test-fs-non-number-arguments-throw had to be excluded from the changes
because of a weird issue on Windows CI.

PR-URL: https://github.com/nodejs/io.js/pull/1721
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
2015-05-19 21:21:27 +02:00

119 lines
2.1 KiB
JavaScript

'use strict';
var common = require('../common');
var stream = require('stream');
var Readable = stream.Readable;
var Writable = stream.Writable;
var assert = require('assert');
var util = require('util');
var EE = require('events').EventEmitter;
// a mock thing a bit like the net.Socket/tcp_wrap.handle interaction
var stream = new Readable({
highWaterMark: 16,
encoding: 'utf8'
});
var source = new EE();
stream._read = function() {
console.error('stream._read');
readStart();
};
var ended = false;
stream.on('end', function() {
ended = true;
});
source.on('data', function(chunk) {
var ret = stream.push(chunk);
console.error('data', stream._readableState.length);
if (!ret)
readStop();
});
source.on('end', function() {
stream.push(null);
});
var reading = false;
function readStart() {
console.error('readStart');
reading = true;
}
function readStop() {
console.error('readStop');
reading = false;
process.nextTick(function() {
var r = stream.read();
if (r !== null)
writer.write(r);
});
}
var writer = new Writable({
decodeStrings: false
});
var written = [];
var expectWritten =
[ 'asdfgasdfgasdfgasdfg',
'asdfgasdfgasdfgasdfg',
'asdfgasdfgasdfgasdfg',
'asdfgasdfgasdfgasdfg',
'asdfgasdfgasdfgasdfg',
'asdfgasdfgasdfgasdfg' ];
writer._write = function(chunk, encoding, cb) {
console.error('WRITE %s', chunk);
written.push(chunk);
process.nextTick(cb);
};
writer.on('finish', finish);
// now emit some chunks.
var chunk = 'asdfg';
var set = 0;
readStart();
data();
function data() {
assert(reading);
source.emit('data', chunk);
assert(reading);
source.emit('data', chunk);
assert(reading);
source.emit('data', chunk);
assert(reading);
source.emit('data', chunk);
assert(!reading);
if (set++ < 5)
setTimeout(data, 10);
else
end();
}
function finish() {
console.error('finish');
assert.deepEqual(written, expectWritten);
console.log('ok');
}
function end() {
source.emit('end');
assert(!reading);
writer.end(stream.read());
setTimeout(function() {
assert(ended);
});
}