graph-crdt/dist/union/test.js

A Delta State Graph CRDT variant

'use strict';

var _mocha = require('mocha');

var _expect = require('expect');

var _expect2 = _interopRequireDefault(_expect);

var _index = require('./index');

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var createSpy = _expect2.default.createSpy; /* eslint-disable require-jsdoc*/

(0, _mocha.describe)('A union', function () {

  (0, _mocha.describe)('conflict', function () {

    var current = void 0,
        update = void 0,
        result = void 0,
        inverse = void 0;
    var state = 10;

    (0, _mocha.beforeEach)(function () {
      current = { state: state };
      update = { state: state };
    });

    function setup() {

      // Try it in both orders.
      result = (0, _index.conflict)(current, update);
      inverse = (0, _index.conflict)(update, current);
    }

    (0, _mocha.it)('should resolve to the greater object uid', function () {
      current.value = { edge: 'abc' };
      update.value = { edge: 'def' };
      setup();
      (0, _expect2.default)(result).toBe(update);
      (0, _expect2.default)(inverse).toBe(update);
    });

    (0, _mocha.it)('should return the first arg if uids are equal', function () {
      current.value = { edge: 'equal' };
      update.value = { edge: 'equal' };
      setup();
      (0, _expect2.default)(result).toBe(current);
      (0, _expect2.default)(inverse).toBe(update);
    });

    (0, _mocha.it)('should favor objects over strings', function () {
      current.value = { edge: 'def' };
      update.value = 'abc';
      setup();
      (0, _expect2.default)(result).toBe(current);
      (0, _expect2.default)(inverse).toBe(current);
    });

    (0, _mocha.it)('should favor numbers over strings', function () {
      current.value = '5';
      update.value = 5;
      setup();
      (0, _expect2.default)(result).toBe(update);
      (0, _expect2.default)(inverse).toBe(update);
    });

    (0, _mocha.it)('should resolve to larger values', function () {
      current.value = 'def';
      update.value = 'abc';
      setup();
      (0, _expect2.default)(result).toBe(current);
      (0, _expect2.default)(inverse).toBe(current);
    });

    (0, _mocha.it)('should return the first arg if both are equivalent', function () {
      current.value = 'equal';
      update.value = 'equal';
      setup();
      (0, _expect2.default)(result).toBe(current);
      (0, _expect2.default)(inverse).toBe(update);
    });

    (0, _mocha.it)('should toString objects to compare', function () {
      var spy = createSpy().andReturn('abc');
      current.value = { toJSON: spy };
      update.value = { toJSON: function toJSON() {
          return 'def';
        } };
      setup();
      (0, _expect2.default)(result).toBe(update);
      (0, _expect2.default)(inverse).toBe(update);
      (0, _expect2.default)(spy).toHaveBeenCalled();
    });

    (0, _mocha.it)('should favor edges over strings of the same value', function () {
      current.value = { edge: 'equal' };
      update.value = 'equal';
      setup();
      (0, _expect2.default)(result).toBe(current);
      (0, _expect2.default)(inverse).toBe(current);
    });
  });
});