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var common = require('../common');
var assert = require('assert');
var Readable = require('_stream_readable');
var Writable = require('_stream_writable');
var EE = require('events').EventEmitter;
var testRuns = 0, completedRuns = 0;
function runTest(highWaterMark, objectMode, produce) {
testRuns++;
var old = new EE;
var r = new Readable({ highWaterMark: highWaterMark, objectMode: objectMode });
assert.equal(r, r.wrap(old));
var ended = false;
r.on('end', function() {
ended = true;
});
old.pause = function() {
console.error('old.pause()');
old.emit('pause');
flowing = false;
};
old.resume = function() {
console.error('old.resume()');
old.emit('resume');
flow();
};
var flowing;
var chunks = 10;
var oldEnded = false;
var expected = [];
function flow() {
flowing = true;
while (flowing && chunks-- > 0) {
var item = produce();
expected.push(item);
console.log('old.emit', chunks, flowing);
old.emit('data', item);
console.log('after emit', chunks, flowing);
}
if (chunks <= 0) {
oldEnded = true;
console.log('old end', chunks, flowing);
old.emit('end');
}
}
var w = new Writable({ highWaterMark: highWaterMark * 2, objectMode: objectMode });
var written = [];
w._write = function(chunk, encoding, cb) {
console.log('_write', chunk);
written.push(chunk);
setTimeout(cb);
};
w.on('finish', function() {
completedRuns++;
performAsserts();
});
r.pipe(w);
flow();
function performAsserts() {
assert(ended);
assert(oldEnded);
assert.deepEqual(written, expected);
}
}
runTest(100, false, function(){ return new Buffer(100); });
runTest(10, false, function(){ return new Buffer('xxxxxxxxxx'); });
runTest(1, true, function(){ return { foo: 'bar' }; });
var objectChunks = [ 5, 'a', false, 0, '', 'xyz', { x: 4 }, 7, [], 555 ];
runTest(1, true, function(){ return objectChunks.shift() });
process.on('exit', function() {
assert.equal(testRuns, completedRuns);
console.log('ok');
});
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