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nodejs/test/pummel/test-net-throttle.js
Vse Mozhet Byt 8b76c3e60c test: reduce string concatenations
PR-URL: https://github.com/nodejs/node/pull/12735
Refs: https://github.com/nodejs/node/pull/12455
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
2017-05-05 17:39:05 +03:00

80 lines
2.6 KiB
JavaScript

// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
const common = require('../common');
const assert = require('assert');
const net = require('net');
const N = 1024 * 1024;
const part_N = N / 3;
let chars_recved = 0;
let npauses = 0;
console.log('build big string');
const body = 'C'.repeat(N);
console.log(`start server on port ${common.PORT}`);
const server = net.createServer(function(connection) {
connection.write(body.slice(0, part_N));
connection.write(body.slice(part_N, 2 * part_N));
assert.strictEqual(false, connection.write(body.slice(2 * part_N, N)));
console.log(`bufferSize: ${connection.bufferSize}`, 'expecting', N);
assert.ok(0 <= connection.bufferSize &&
connection._writableState.length <= N);
connection.end();
});
server.listen(common.PORT, function() {
let paused = false;
const client = net.createConnection(common.PORT);
client.setEncoding('ascii');
client.on('data', function(d) {
chars_recved += d.length;
console.log(`got ${chars_recved}`);
if (!paused) {
client.pause();
npauses += 1;
paused = true;
console.log('pause');
const x = chars_recved;
setTimeout(function() {
assert.strictEqual(chars_recved, x);
client.resume();
console.log('resume');
paused = false;
}, 100);
}
});
client.on('end', function() {
server.close();
client.end();
});
});
process.on('exit', function() {
assert.strictEqual(N, chars_recved);
assert.strictEqual(true, npauses > 2);
});