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pending-balanced-requester.js
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pending-balanced-requester.js
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import test from 'ava';
import LogSuppress from '../lib/log-suppress';
import r from 'randomstring';
import async from 'async';
const environment = r.generate();
const { PendingBalancedRequester, Responder } = require('../')({ environment });
LogSuppress.init(console);
test('Supports environment', (t) => {
t.is(PendingBalancedRequester.environment, `${environment}:`);
t.is(Responder.environment, `${environment}:`);
});
test.cb('Supports simple req&res', (t) => {
t.plan(1);
const requester = new PendingBalancedRequester({ name: `${t.title}: simple requester` });
const responder = new Responder({ name: `${t.title}: simple responder` });
requester.send({ type: 'test', args: [1, 2, 3] });
responder.on('test', (req) => {
t.deepEqual(req.args, [1, 2, 3]);
t.end();
});
});
test.cb('Supports keys', (t) => {
const key = r.generate();
const requester = new PendingBalancedRequester({ name: `${t.title}: keyed requester`, key });
const responder = new Responder({ name: `${t.title}: keyed responder`, key });
requester.send({ type: 'test', args: [1, 2, 4] });
responder.on('test', (req) => {
t.deepEqual(req.args, [1, 2, 4]);
t.end();
});
});
test.cb('Supports namespaces', (t) => {
const namespace = r.generate();
const requester = new PendingBalancedRequester({ name: `${t.title}: ns requester`, namespace });
const responder = new Responder({ name: `${t.title}: ns responder`, namespace });
requester.send({ type: 'test', args: [1, 2, 5] });
responder.on('test', (req) => {
t.deepEqual(req.args, [1, 2, 5]);
t.end();
});
});
test.cb('Supports keys & namespaces', (t) => {
const key = r.generate();
const namespace = r.generate();
const requester = new PendingBalancedRequester({ name: `PBR ${t.title}: kns requester`, key, namespace });
const responder = new Responder({ name: `PBR ${t.title}: kns responder`, key, namespace });
requester.send({ type: 'test', args: [1, 2, 6] });
responder.on('test', (req) => {
t.deepEqual(req.args, [1, 2, 6]);
t.end();
});
});
test.cb('Supports request balancing', (t) => {
const key = r.generate();
const namespace = r.generate();
t.plan(30);
const requester = new PendingBalancedRequester({ name: `PBR ${t.title}: kns requester`, key, namespace });
const responder = new Responder({ name: `PBR ${t.title}: kns responder`, key, namespace });
const responder2 = new Responder({ name: `PBR ${t.title}: kns responder 2`, key, namespace });
const responder3 = new Responder({ name: `PBR ${t.title}: kns responder 3`, key, namespace });
const responders = [responder, responder2, responder3];
responders.forEach((r) => r.on('test', (req, cb) => {
setTimeout(() => cb(req.args), Math.random() * 1000 + 50);
}));
async.timesLimit(30, 5,
(time, done) => {
requester.send({ type: 'test', args: [3, 2, time] }, (res) => {
t.deepEqual(res, [3, 2, time]);
done();
});
},
(err, results) => {
t.end();
});
});