instantjob-recruiter-client/dist/tests/common/utilities.spec.js

a set of tools for creating an instantjob recruiter react client

'use strict';

var _keys = require('babel-runtime/core-js/object/keys');

var _keys2 = _interopRequireDefault(_keys);

var _utilities = require('common/utilities');

var _expect = require('expect');

var _expect2 = _interopRequireDefault(_expect);

var _sinon = require('sinon');

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

describe("filter_hash", function () {
  it("should be correct", function () {
    var filtered_hash = (0, _utilities.filter_hash)({ 1: true, 2: false }, Boolean);
    (0, _expect2.default)(filtered_hash[1]).toEqual(true);
    (0, _expect2.default)(filtered_hash[2]).toNotExist();
    (0, _expect2.default)((0, _keys2.default)(filtered_hash).length).toEqual(1);
  });
});

describe("set_from_array", function () {
  it("should be correct", function () {
    var set = (0, _utilities.set_from_array)([1, 2]);
    (0, _expect2.default)(set[1]).toEqual(true);
    (0, _expect2.default)(set[2]).toEqual(true);
    (0, _expect2.default)((0, _keys2.default)(set).length).toEqual(2);
  });
});

describe("make_memoized", function () {
  it("should compute the same result", function () {
    var fun = function fun(x, y) {
      return x * y;
    };
    var memoized_fun = (0, _utilities.make_memoized)(fun);
    (0, _expect2.default)(memoized_fun(3, 5)).toEqual(fun(3, 5));
    (0, _expect2.default)(memoized_fun(3, 5)).toEqual(fun(3, 5));
  });

  it("should call function only for new arguments", function () {
    var fun = (0, _sinon.spy)(function (x, y) {
      return x + y;
    });
    var fun_with_specified_arity = function fun_with_specified_arity(x, y) {
      return fun(x, y);
    };
    var memoized_fun = (0, _utilities.make_memoized)(fun_with_specified_arity);
    memoized_fun(1, 2);
    memoized_fun(1, 2);
    (0, _expect2.default)(fun.callCount).toEqual(1);
    memoized_fun(1, 3);
    (0, _expect2.default)(fun.callCount).toEqual(2);
    memoized_fun(1, 2);
    (0, _expect2.default)(fun.callCount).toEqual(2);
  });
});

describe("make_one_memoized", function () {
  it("should call function only for a new argument", function () {
    var fun = (0, _sinon.spy)(function (x) {
      return "My favorite fruit is the " + x;
    });
    var memoized_fun = (0, _utilities.make_one_memoized)(fun);
    memoized_fun("apple");
    memoized_fun("apple");
    (0, _expect2.default)(fun.callCount).toEqual(1);
    memoized_fun("banana");
    (0, _expect2.default)(fun.callCount).toEqual(2);
    memoized_fun("apple");
    (0, _expect2.default)(fun.callCount).toEqual(2);
  });
});

describe('compare', function () {
  var compare_a = (0, _utilities.compare)((0, _utilities.property_getter)('a'));
  (0, _expect2.default)(compare_a({ a: 1 }, { a: 2 })).toEqual(-1);
  (0, _expect2.default)(compare_a({ a: 2 }, { a: 1 })).toEqual(1);
  (0, _expect2.default)((0, _utilities.compare)((0, _utilities.property_getter)('a'), false)({ a: 1 }, { a: 2 })).toEqual(1);
  (0, _expect2.default)(compare_a({ a: 1 }, { a: 1 })).toEqual(0);
});