rtc-signaller/test/announce-concurrent.js

rtc.io transportless signalling for WebRTC

var test = require('tape');
var messenger = require('messenger-memory')({ delay: Math.random() * 200 });
var peers = [ messenger, messenger ];
var signaller = require('./helpers/signaller');
var signallers;

test('create signallers', function(t) {
  t.plan(3);
  signallers = peers.map(signaller);
  t.equal(signallers.length, 2);
  t.equal(typeof signallers[0].announce, 'function', 'first signaller');
  t.equal(typeof signallers[1].announce, 'function', 'second signaller');
  t.end();
});

test('concurrent announce', function(t) {
  t.plan(5);

  signallers[1].on('peer:announce', function(data) {
    t.equal(data.name, 'Fred', 'signaller 0 announce captured by signaller 1');
    t.ok(signallers[1].peers.get(data.id), 'signaller 1 has noted relationship with signaller 0');
  });

  signallers[0].on('peer:announce', function(data) {
    // once peer:1 has processed peer:0 announce it will respond
    // if it is a new peer
    t.equal(data.id, signallers[1].id, 'signaller 1 has announced itself in response');
    t.ok(signallers[0].peers.get(data.id), 'signaller 0 has noted relationship with signaller 1');
  });

  setTimeout(function() {
    signallers[0].removeAllListeners();
    signallers[1].removeAllListeners();
    t.pass('received only the 1 announce message for each peer');
  }, 1000);

  // peer 0 initiates the announce process
  signallers[0].announce({ name: 'Fred' });
  signallers[1].announce({ name: 'Bob' });
});

test('ab roles have been correctly assigned', function(t) {
  var data0;
  var data1;

  t.plan(4);
  t.ok(data0 = signallers[1].peers.get(signallers[0].id), 'got data for peer 0');
  t.ok(data1 = signallers[0].peers.get(signallers[1].id), 'got data for peer 1');

  // ensure that data0 and data1 have inverse relationships for local and remote
  t.equal(data0.remote, data1.local, 'data 0 remote === data 1 local');
  t.equal(data1.local, data0.remote, 'data 1 local === data 0 remote');
});

test('isMaster checks are accurate', function(t) {
  var alphaId = [signallers[0].id, signallers[1].id].sort()[0];

  t.plan(2);

  if (alphaId === signallers[0].id) {
    t.ok(signallers[0].isMaster(signallers[1].id));
    t.notOk(signallers[1].isMaster(signallers[0].id));
  }
  else {
    t.notOk(signallers[0].isMaster(signallers[1].id));
    t.ok(signallers[1].isMaster(signallers[0].id));
  }
});