zurvan/tests/ut/ConfigurationUTs.js

A library for simulating time in Node.js

'use strict';

var Configuration = require('../../detail/Configuration');
var FieldOverrider = require('../../detail/utils/FieldOverrider');

var assert = require('assert');
var bluebird = require('bluebird');

describe('Configuration missing Promise at request time', function() {
  it('fetches bluebird as default scheduler', function(done) {
    // workaround to set proper scheduler after using bluebird for testing
    var originalScheduler = bluebird.setScheduler(function() {});
    bluebird.setScheduler(originalScheduler);

    var called = false;
    var overriddenPromise = new FieldOverrider(global, 'Promise', undefined);
    var overriddenImmediate = new FieldOverrider(
      global,
      'setImmediate',
      function(f) {
        called = true;
        f.apply([].splice.call(arguments, 1));
      }
    );

    var config = Configuration.defaultConfiguration();
    assert(config.promiseScheduler === bluebird);

    config.promiseScheduler
      .resolve()
      .then(function() {
        overriddenImmediate.restore();
        overriddenPromise.restore();

        bluebird.setScheduler(originalScheduler);
        assert(called);
      })
      .then(done, done);
  });
});