@graphistry/falcor/test/falcor/schedulers/schedulers.spec.js

A JavaScript library for efficient data fetching.

var chai = require('chai');
var expect = chai.expect;
var ImmediateScheduler = require('./../../../lib/schedulers/ImmediateScheduler');
var TimeoutScheduler = require('./../../../lib/schedulers/TimeoutScheduler');

describe('Schedulers', function() {
    var nextTick = new TimeoutScheduler(0);
    var timeout16 = new TimeoutScheduler(16);
    var timeout100 = new TimeoutScheduler(100);
    var immediate = new ImmediateScheduler();

    it('should do an immediate scheduler', function() {
        var trigger = true;
        immediate.schedule(function() {
            expect(trigger).to.be.ok;
        });
        trigger = false;
    });

    it('should do a timeout', function(done) {
        var trigger = true;
        timeout16.schedule(function() {
            expect(trigger).to.not.be.ok;
            done();
        });
        trigger = false;
    });

    it('should verify that longer timeouts happen after shorter timeouts.', function(done) {
        var trigger = true;
        timeout16.schedule(function() {
            expect(trigger).to.not.be.ok;
            trigger = true;
        });
        timeout100.schedule(function() {
            expect(trigger).to.be.ok;
            done();
        });
        trigger = false;
    });
});