0
0
mirror of https://github.com/nodejs/node.git synced 2024-11-28 22:46:31 +01:00
nodejs/test/parallel/test-stream-readable-event.js
isaacs 3e1b1dd4a9 Remove excessive copyright/license boilerplate
The copyright and license notice is already in the LICENSE file.  There
is no justifiable reason to also require that it be included in every
file, since the individual files are not individually distributed except
as part of the entire package.
2015-01-12 15:30:28 -08:00

106 lines
2.3 KiB
JavaScript

var common = require('../common');
var assert = require('assert');
var Readable = require('stream').Readable;
(function first() {
// First test, not reading when the readable is added.
// make sure that on('readable', ...) triggers a readable event.
var r = new Readable({
highWaterMark: 3
});
var _readCalled = false;
r._read = function(n) {
_readCalled = true;
};
// This triggers a 'readable' event, which is lost.
r.push(new Buffer('blerg'));
var caughtReadable = false;
setTimeout(function() {
// we're testing what we think we are
assert(!r._readableState.reading);
r.on('readable', function() {
caughtReadable = true;
});
});
process.on('exit', function() {
// we're testing what we think we are
assert(!_readCalled);
assert(caughtReadable);
console.log('ok 1');
});
})();
(function second() {
// second test, make sure that readable is re-emitted if there's
// already a length, while it IS reading.
var r = new Readable({
highWaterMark: 3
});
var _readCalled = false;
r._read = function(n) {
_readCalled = true;
};
// This triggers a 'readable' event, which is lost.
r.push(new Buffer('bl'));
var caughtReadable = false;
setTimeout(function() {
// assert we're testing what we think we are
assert(r._readableState.reading);
r.on('readable', function() {
caughtReadable = true;
});
});
process.on('exit', function() {
// we're testing what we think we are
assert(_readCalled);
assert(caughtReadable);
console.log('ok 2');
});
})();
(function third() {
// Third test, not reading when the stream has not passed
// the highWaterMark but *has* reached EOF.
var r = new Readable({
highWaterMark: 30
});
var _readCalled = false;
r._read = function(n) {
_readCalled = true;
};
// This triggers a 'readable' event, which is lost.
r.push(new Buffer('blerg'));
r.push(null);
var caughtReadable = false;
setTimeout(function() {
// assert we're testing what we think we are
assert(!r._readableState.reading);
r.on('readable', function() {
caughtReadable = true;
});
});
process.on('exit', function() {
// we're testing what we think we are
assert(!_readCalled);
assert(caughtReadable);
console.log('ok 3');
});
})();