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// Test that having a bunch of streams piping in parallel
// doesn't break anything.
var common = require("../common");
var assert = require("assert");
var Stream = require("stream").Stream;
var rr = [];
var ww = [];
var cnt = 100;
var chunks = 1000;
var chunkSize = 250;
var data = new Buffer(chunkSize);
var wclosed = 0;
var rclosed = 0;
function FakeStream() {
Stream.apply(this);
this.wait = false;
this.writable = true;
this.readable = true;
}
FakeStream.prototype = Object.create(Stream.prototype);
FakeStream.prototype.write = function(chunk) {
console.error(this.ID, "write", this.wait)
if (this.wait) {
process.nextTick(this.emit.bind(this, "drain"));
}
this.wait = !this.wait;
return this.wait;
};
FakeStream.prototype.end = function() {
this.emit("end");
process.nextTick(this.close.bind(this));
};
// noop - closes happen automatically on end.
FakeStream.prototype.close = function() {
this.emit("close");
};
// expect all streams to close properly.
process.on("exit", function() {
assert.equal(cnt, wclosed, "writable streams closed");
assert.equal(cnt, rclosed, "readable streams closed");
});
for (var i = 0; i < chunkSize; i ++) {
chunkSize[i] = i % 256;
}
for (var i = 0; i < cnt; i++) {
var r = new FakeStream();
r.on("close", function() {
console.error(this.ID, "read close");
rclosed++;
});
rr.push(r);
var w = new FakeStream();
w.on("close", function() {
console.error(this.ID, "write close");
wclosed++;
});
ww.push(w);
r.ID = w.ID = i;
r.pipe(w);
}
// now start passing through data
// simulate a relatively fast async stream.
rr.forEach(function (r) {
var cnt = chunks;
var paused = false;
r.on("pause", function() {
paused = true;
});
r.on("resume", function() {
paused = false;
step();
});
function step() {
r.emit("data", data);
if (--cnt === 0) {
r.end();
return;
}
if (paused) return;
process.nextTick(step);
}
process.nextTick(step);
});