tcpnet/test/simple/dual-workers-parallel.js

Creates TCP connections between nodes without configuration

var tcpnet = require('../../tcpnet.js');
var test = require('tap').test;
var async = require('async');

var serviceA = tcpnet('test-service');
    serviceA.listen();
var serviceB = tcpnet('test-service');
    serviceB.listen();

test('got connection in both services', function (t) {

  async.parallel({
    a: function (done) {
      serviceA.once('connection', function (socket) {
        done(null, socket);
      });
    },

    b: function (done) {
      serviceB.once('connection', function (socket) {
        done(null, socket);
      });
    }
  }, function (err, sockets) {
    t.equal(err, null);

    t.equal(serviceA.connections.length, 1);
    t.equal(serviceA.connections[0], sockets.a);

    t.equal(serviceB.connections.length, 1);
    t.equal(serviceB.connections[0], sockets.b);

    t.end();
  });
});

test('can perform two way communication', function (t) {
  var socketA = serviceA.connections[0];
  var socketB = serviceB.connections[0];

  // data transfer A -> B
  socketA.write('a sends');
  socketB.once('data', function (chunk) {
    t.equal(chunk.toString(), 'a sends');

    // data transfer B -> A
    socketB.write('b sends');
    socketA.once('data', function (chunk) {
      t.equal(chunk.toString(), 'b sends');

      // done
      t.end();
    });
  });
});

test('close services', function (t) {

  async.parallel([
    serviceA.close.bind(serviceA),
    serviceB.close.bind(serviceB)
  ], function (err) {
    t.equal(err, null);
    t.end();
  });
});