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1
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var utilities = require('../src/utilities.js'); |
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2
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3
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describe('utilities.toObject', function() { |
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4
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describe('failing tests', function() { |
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5
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it('should fail because the arr parameter is undefined', function() { |
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6
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expect(utilities.toObject).toThrowError(TypeError); |
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7
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}); |
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8
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9
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it('should fail because the arr parameter is not an Array', function() { |
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10
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expect(utilities.toObject.bind(null, {})).toThrowError(TypeError); |
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11
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}); |
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12
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13
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it('should fail because the mapBy not of type String, Array or Function and not falsy', function() { |
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14
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expect(utilities.toObject.bind(null, [], {})).toThrowError(TypeError); |
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15
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}); |
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16
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}); |
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17
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18
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describe('array of primitives toObject', function() { |
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19
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// test example from README.md |
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20
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var states = ['Sachsen', 'Sachsen-Anhalt', 'Berlin', 'Hamburg']; |
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21
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var statesObject = utilities.toObject(states); |
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22
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// end test example from README.md |
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23
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24
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it('should be able to access object by index', function() { |
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25
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expect(statesObject[0]).toEqual('Sachsen'); |
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26
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}); |
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27
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28
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it('should have 4 keys', function() { |
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29
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expect(Object.keys(statesObject).length).toEqual(4); |
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30
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}); |
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31
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}); |
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32
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33
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var news = [ |
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34
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{ |
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35
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id: 12001, |
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36
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headline: 'Tiger goes limp', |
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37
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subHeadline: 'Pulls out after 9 holes' |
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38
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}, |
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39
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{ |
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40
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id: 666, |
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41
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headline: 'Croc has beef with cow', |
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42
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subHeadline: '' |
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43
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}, |
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44
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{ |
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45
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id: 1337, |
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46
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headline: 'Germans wurst at penalties', |
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47
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subHeadline: 'New stats prove England are better from the spot' |
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48
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} |
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49
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]; |
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50
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51
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describe('array of objects toObject - string mapBy', function() { |
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52
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var newsObject = utilities.toObject(news, 'id'); |
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53
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54
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it('should be able to access object by ID', function() { |
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55
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expect(newsObject[1337].headline).toEqual('Germans wurst at penalties'); |
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56
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}); |
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57
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58
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it('should have 3 keys', function() { |
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59
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expect(Object.keys(newsObject).length).toEqual(3); |
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60
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}); |
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61
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}); |
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62
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63
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describe('array of objects toObject - array mapBy', function() { |
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64
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var newsObject = utilities.toObject(news, ['id', 'id']); |
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65
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66
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it('should be able to access object by ID_ID', function() { |
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67
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expect(newsObject['1337_1337'].headline).toEqual( |
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68
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'Germans wurst at penalties' |
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69
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); |
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70
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}); |
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71
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72
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it('should have 3 keys', function() { |
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73
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expect(Object.keys(newsObject).length).toEqual(3); |
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74
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}); |
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75
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}); |
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76
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77
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describe('array of objects toObject - function mapBy', function() { |
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78
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var newsObject = utilities.toObject(news, function(val, i) { |
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79
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return val.id + '_' + i; |
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80
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}); |
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81
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82
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it('should be able to access object by ID_index', function() { |
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83
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expect(newsObject['1337_2'].headline).toEqual( |
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84
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'Germans wurst at penalties' |
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85
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); |
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86
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}); |
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87
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88
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it('should have 3 keys', function() { |
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89
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expect(Object.keys(newsObject).length).toEqual(3); |
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90
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}); |
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91
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}); |
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92
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93
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describe('array of objects toObject - function provides neither string or number as new index', function() { |
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94
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var newsObject = utilities.toObject(news, function(val, i) { |
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95
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return [i]; |
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96
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}); |
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97
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98
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it('should have 0 keys', function() { |
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99
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expect(Object.keys(newsObject).length).toEqual(0); |
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100
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}); |
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101
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}); |
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102
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}); |
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103
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theZieger /
utilitiesjs
