| Conditions | 1 |
| Paths | 1 |
| Total Lines | 382 |
| Lines | 376 |
| Ratio | 98.43 % |
| Changes | 1 | ||
| Bugs | 0 | Features | 0 |
Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.
For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.
Commonly applied refactorings include:
If many parameters/temporary variables are present:
| 1 | /* eslint-enable describe it sinon */ |
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| 8 | describe('the treeFlatList utility', () => { |
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| 9 | |||
| 10 | it('Should turn a tree into a flat list with no identifier', () => { |
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| 11 | |||
| 12 | const data = { |
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| 13 | root: { |
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| 14 | id: -1, |
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| 15 | children: [ |
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| 16 | { |
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| 17 | id: 1, |
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| 18 | parentId: -1, |
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| 19 | children: [ |
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| 20 | { |
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| 21 | id: 11, |
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| 22 | parentId: 1 |
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| 23 | }, |
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| 24 | { |
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| 25 | id: 12, |
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| 26 | parentId: 1, |
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| 27 | children: [ |
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| 28 | { |
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| 29 | id: 121, |
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| 30 | parentId: 12, |
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| 31 | children: [ |
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| 32 | { |
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| 33 | id: 1211, |
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| 34 | parentId: 121 |
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| 35 | } |
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| 36 | ] |
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| 37 | } |
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| 38 | ] |
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| 39 | } |
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| 40 | ] |
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| 41 | }, |
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| 42 | { |
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| 43 | id: 2, |
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| 44 | parentId: -1, |
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| 45 | children: [ |
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| 46 | { |
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| 47 | id: 21, |
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| 48 | parentId: 2 |
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| 49 | } |
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| 50 | ] |
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| 51 | } |
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| 52 | ] |
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| 53 | } |
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| 54 | }; |
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| 55 | |||
| 56 | expect( |
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| 57 | treeToFlatList(data) |
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| 58 | ).toEqual([ |
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| 59 | { |
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| 60 | _id: -1, |
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| 61 | _parentId: 'root', |
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| 62 | _depth: 0, |
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| 63 | _leaf: false, |
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| 64 | _hideChildren: undefined, |
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| 65 | _hasChildren: true, |
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| 66 | _isExpanded: true |
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| 67 | }, |
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| 68 | { |
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| 69 | _id: 1, |
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| 70 | _parentId: -1, |
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| 71 | _depth: 1, |
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| 72 | _leaf: false, |
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| 73 | _hideChildren: undefined, |
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| 74 | _hasChildren: true, |
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| 75 | _isExpanded: true |
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| 76 | }, |
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| 77 | { |
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| 78 | _id: 11, |
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| 79 | _parentId: 1, |
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| 80 | _depth: 2, |
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| 81 | _leaf: true, |
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| 82 | _hideChildren: undefined, |
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| 83 | _hasChildren: undefined, |
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| 84 | _isExpanded: undefined |
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| 85 | }, |
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| 86 | { |
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| 87 | _id: 12, |
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| 88 | _parentId: 1, |
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| 89 | _depth: 2, |
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| 90 | _leaf: false, |
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| 91 | _hideChildren: undefined, |
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| 92 | _hasChildren: true, |
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| 93 | _isExpanded: true |
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| 94 | }, |
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| 95 | { |
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| 96 | _id: 121, |
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| 97 | _parentId: 12, |
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| 98 | _depth: 3, |
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| 99 | _leaf: false, |
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| 100 | _hideChildren: undefined, |
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| 101 | _hasChildren: true, |
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| 102 | _isExpanded: true |
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| 103 | }, |
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| 104 | { |
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| 105 | _id: 1211, |
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| 106 | _parentId: 121, |
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| 107 | _depth: 4, |
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| 108 | _leaf: true, |
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| 109 | _hideChildren: undefined, |
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| 110 | _hasChildren: undefined, |
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| 111 | _isExpanded: undefined |
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| 112 | }, |
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| 113 | { |
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| 114 | _id: 2, |
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| 115 | _parentId: -1, |
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| 116 | _depth: 1, |
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| 117 | _leaf: false, |
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| 118 | _hideChildren: undefined, |
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| 119 | _hasChildren: true, |
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| 120 | _isExpanded: true |
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| 121 | }, |
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| 122 | { |
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| 123 | _id: 21, |
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| 124 | _parentId: 2, |
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| 125 | _depth: 2, |
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| 126 | _leaf: true, |
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| 127 | _hideChildren: undefined, |
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| 128 | _hasChildren: undefined, |
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| 129 | _isExpanded: undefined |
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| 130 | } |
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| 131 | ]); |
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| 132 | |||
| 133 | }); |
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| 134 | |||
| 135 | it('Should turn a tree into a flat list with identifiers', () => { |
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| 136 | |||
| 137 | const data = { |
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| 138 | topLevel: { |
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| 139 | id: -1, |
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| 140 | childz: [ |
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| 141 | { |
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| 142 | id: 1, |
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| 143 | parentId: -1, |
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| 144 | childz: [ |
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| 145 | { |
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| 146 | id: 11, |
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| 147 | parentId: 1 |
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| 148 | }, |
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| 149 | { |
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| 150 | id: 12, |
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| 151 | parentId: 1, |
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| 152 | childz: [ |
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| 153 | { |
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| 154 | id: 121, |
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| 155 | parentId: 12, |
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| 156 | childz: [ |
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| 157 | { |
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| 158 | id: 1211, |
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| 159 | parentId: 121 |
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| 160 | } |
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| 161 | ] |
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| 162 | } |
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| 163 | ] |
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| 164 | } |
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| 165 | ] |
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| 166 | }, |
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| 167 | { |
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| 168 | id: 2, |
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| 169 | parentId: -1, |
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| 170 | childz: [ |
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| 171 | { |
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| 172 | id: 21, |
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| 173 | parentId: 2 |
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| 174 | } |
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| 175 | ] |
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| 176 | } |
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| 177 | ] |
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| 178 | } |
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| 179 | }; |
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| 180 | |||
| 181 | expect( |
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| 182 | treeToFlatList(data, 'topLevel', 'childz') |
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| 183 | ).toEqual([ |
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| 184 | { |
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| 185 | _id: -1, |
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| 186 | _parentId: 'root', |
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| 187 | _depth: 0, |
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| 188 | _leaf: false, |
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| 189 | _hideChildren: undefined, |
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| 190 | _hasChildren: true, |
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| 191 | _isExpanded: true |
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| 192 | }, |
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| 193 | { |
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| 194 | _id: 1, |
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| 195 | _parentId: -1, |
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| 196 | _depth: 1, |
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| 197 | _leaf: false, |
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| 198 | _hideChildren: undefined, |
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| 199 | _hasChildren: true, |
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| 200 | _isExpanded: true |
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| 201 | }, |
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| 202 | { |
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| 203 | _id: 11, |
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| 204 | _parentId: 1, |
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| 205 | _depth: 2, |
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| 206 | _leaf: true, |
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| 207 | _hideChildren: undefined, |
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| 208 | _hasChildren: undefined, |
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| 209 | _isExpanded: undefined |
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| 210 | }, |
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| 211 | { |
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| 212 | _id: 12, |
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| 213 | _parentId: 1, |
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| 214 | _depth: 2, |
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| 215 | _leaf: false, |
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| 216 | _hideChildren: undefined, |
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| 217 | _hasChildren: true, |
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| 218 | _isExpanded: true |
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| 219 | }, |
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| 220 | { |
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| 221 | _id: 121, |
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| 222 | _parentId: 12, |
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| 223 | _depth: 3, |
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| 224 | _leaf: false, |
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| 225 | _hideChildren: undefined, |
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| 226 | _hasChildren: true, |
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| 227 | _isExpanded: true |
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| 228 | }, |
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| 229 | { |
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| 230 | _id: 1211, |
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| 231 | _parentId: 121, |
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| 232 | _depth: 4, |
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| 233 | _leaf: true, |
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| 234 | _hideChildren: undefined, |
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| 235 | _hasChildren: undefined, |
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| 236 | _isExpanded: undefined |
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| 237 | }, |
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| 238 | { |
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| 239 | _id: 2, |
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| 240 | _parentId: -1, |
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| 241 | _depth: 1, |
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| 242 | _leaf: false, |
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| 243 | _hideChildren: undefined, |
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| 244 | _hasChildren: true, |
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| 245 | _isExpanded: true |
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| 246 | }, |
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| 247 | { |
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| 248 | _id: 21, |
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| 249 | _parentId: 2, |
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| 250 | _depth: 2, |
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| 251 | _leaf: true, |
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| 252 | _hideChildren: undefined, |
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| 253 | _hasChildren: undefined, |
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| 254 | _isExpanded: undefined |
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| 255 | } |
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| 256 | ]); |
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| 257 | |||
| 258 | }); |
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| 259 | |||
| 260 | it('Should pass data along with constructed nodes', () => { |
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| 261 | |||
| 262 | const data = { |
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| 263 | topLevel: { |
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| 264 | id: -1, |
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| 265 | childz: [ |
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| 266 | { |
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| 267 | id: 1, |
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| 268 | specialData: 'someProp', |
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| 269 | parentId: -1, |
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| 270 | childz: [ |
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| 271 | { |
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| 272 | id: 11, |
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| 273 | parentId: 1 |
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| 274 | }, |
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| 275 | { |
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| 276 | id: 12, |
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| 277 | parentId: 1, |
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| 278 | childz: [ |
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| 279 | { |
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| 280 | id: 121, |
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| 281 | parentId: 12, |
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| 282 | childz: [ |
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| 283 | { |
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| 284 | id: 1211, |
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| 285 | parentId: 121 |
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| 286 | } |
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| 287 | ] |
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| 288 | } |
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| 289 | ] |
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| 290 | } |
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| 291 | ] |
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| 292 | }, |
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| 293 | { |
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| 294 | id: 2, |
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| 295 | parentId: -1, |
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| 296 | code: 'banana', |
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| 297 | childz: [ |
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| 298 | { |
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| 299 | id: 21, |
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| 300 | parentId: 2 |
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| 301 | } |
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| 302 | ] |
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| 303 | } |
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| 304 | ] |
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| 305 | } |
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| 306 | }; |
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| 307 | |||
| 308 | expect( |
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| 309 | treeToFlatList(data, 'topLevel', 'childz') |
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| 310 | ).toEqual([ |
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| 311 | { |
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| 312 | _id: -1, |
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| 313 | _parentId: 'root', |
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| 314 | _depth: 0, |
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| 315 | _leaf: false, |
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| 316 | _hideChildren: undefined, |
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| 317 | _hasChildren: true, |
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| 318 | _isExpanded: true |
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| 319 | }, |
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| 320 | { |
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| 321 | _id: 1, |
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| 322 | specialData: 'someProp', |
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| 323 | _parentId: -1, |
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| 324 | _depth: 1, |
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| 325 | _leaf: false, |
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| 326 | _hideChildren: undefined, |
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| 327 | _hasChildren: true, |
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| 328 | _isExpanded: true |
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| 329 | }, |
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| 330 | { |
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| 331 | _id: 11, |
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| 332 | _parentId: 1, |
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| 333 | _depth: 2, |
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| 334 | _leaf: true, |
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| 335 | _hideChildren: undefined, |
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| 336 | _hasChildren: undefined, |
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| 337 | _isExpanded: undefined |
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| 338 | }, |
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| 339 | { |
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| 340 | _id: 12, |
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| 341 | _parentId: 1, |
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| 342 | _depth: 2, |
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| 343 | _leaf: false, |
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| 344 | _hideChildren: undefined, |
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| 345 | _hasChildren: true, |
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| 346 | _isExpanded: true |
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| 347 | }, |
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| 348 | { |
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| 349 | _id: 121, |
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| 350 | _parentId: 12, |
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| 351 | _depth: 3, |
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| 352 | _leaf: false, |
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| 353 | _hideChildren: undefined, |
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| 354 | _hasChildren: true, |
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| 355 | _isExpanded: true |
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| 356 | }, |
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| 357 | { |
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| 358 | _id: 1211, |
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| 359 | _parentId: 121, |
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| 360 | _depth: 4, |
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| 361 | _leaf: true, |
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| 362 | _hideChildren: undefined, |
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| 363 | _hasChildren: undefined, |
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| 364 | _isExpanded: undefined |
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| 365 | }, |
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| 366 | { |
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| 367 | _id: 2, |
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| 368 | _parentId: -1, |
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| 369 | code: 'banana', |
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| 370 | _depth: 1, |
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| 371 | _leaf: false, |
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| 372 | _hideChildren: undefined, |
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| 373 | _hasChildren: true, |
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| 374 | _isExpanded: true |
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| 375 | }, |
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| 376 | { |
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| 377 | _id: 21, |
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| 378 | _parentId: 2, |
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| 379 | _depth: 2, |
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| 380 | _leaf: true, |
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| 381 | _hideChildren: undefined, |
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| 382 | _hasChildren: undefined, |
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| 383 | _isExpanded: undefined |
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| 384 | } |
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| 385 | ]); |
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| 386 | |||
| 387 | }); |
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| 388 | |||
| 389 | }); |
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| 390 |