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'use strict';
require('../common');
var assert = require('assert');
var Stream = require('stream');
var Readable = Stream.Readable;
var r = new Readable();
var N = 256;
var reads = 0;
r._read = function(n) {
return r.push(++reads === N ? null : Buffer.allocUnsafe(1));
};
var rended = false;
r.on('end', function() {
rended = true;
});
var w = new Stream();
w.writable = true;
var writes = 0;
var buffered = 0;
w.write = function(c) {
writes += c.length;
buffered += c.length;
process.nextTick(drain);
return false;
};
function drain() {
assert(buffered <= 3);
buffered = 0;
w.emit('drain');
}
var wended = false;
w.end = function() {
wended = true;
};
// Just for kicks, let's mess with the drain count.
// This verifies that even if it gets negative in the
// pipe() cleanup function, we'll still function properly.
r.on('readable', function() {
w.emit('drain');
});
r.pipe(w);
process.on('exit', function() {
assert(rended);
assert(wended);
console.error('ok');
});
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