|
| 1 | +import {getHighlightedIndex} from '../utils' |
| 2 | + |
| 3 | +test('should return next index', () => { |
| 4 | + const offset = 1 |
| 5 | + const start = 0 |
| 6 | + const items = {length: 3} |
| 7 | + function isItemDisabled() { |
| 8 | + return false |
| 9 | + } |
| 10 | + |
| 11 | + expect(getHighlightedIndex(start, offset, items, isItemDisabled)).toEqual(1) |
| 12 | +}) |
| 13 | + |
| 14 | +test('should return previous index', () => { |
| 15 | + const offset = -1 |
| 16 | + const start = 2 |
| 17 | + const items = {length: 3} |
| 18 | + function isItemDisabled() { |
| 19 | + return false |
| 20 | + } |
| 21 | + |
| 22 | + expect(getHighlightedIndex(start, offset, items, isItemDisabled)).toEqual(1) |
| 23 | +}) |
| 24 | + |
| 25 | +test('should return previous index based on moveAmount', () => { |
| 26 | + const offset = -2 |
| 27 | + const start = 2 |
| 28 | + const items = {length: 3} |
| 29 | + function isItemDisabled() { |
| 30 | + return false |
| 31 | + } |
| 32 | + |
| 33 | + expect(getHighlightedIndex(start, offset, items, isItemDisabled)).toEqual(0) |
| 34 | +}) |
| 35 | + |
| 36 | +test('should wrap to first if circular and reached end', () => { |
| 37 | + const offset = 3 |
| 38 | + const start = 2 |
| 39 | + const items = {length: 3} |
| 40 | + function isItemDisabled() { |
| 41 | + return false |
| 42 | + } |
| 43 | + const circular = true |
| 44 | + |
| 45 | + expect( |
| 46 | + getHighlightedIndex(start, offset, items, isItemDisabled, circular), |
| 47 | + ).toEqual(0) |
| 48 | +}) |
| 49 | + |
| 50 | +test('should not wrap to first if not circular and reached end', () => { |
| 51 | + const offset = 3 |
| 52 | + const start = 2 |
| 53 | + const items = {length: 3} |
| 54 | + function isItemDisabled() { |
| 55 | + return false |
| 56 | + } |
| 57 | + const circular = false |
| 58 | + |
| 59 | + expect( |
| 60 | + getHighlightedIndex(start, offset, items, isItemDisabled, circular), |
| 61 | + ).toEqual(2) |
| 62 | +}) |
| 63 | + |
| 64 | +test('should wrap to last if circular and reached start', () => { |
| 65 | + const offset = -3 |
| 66 | + const start = 2 |
| 67 | + const items = {length: 3} |
| 68 | + function isItemDisabled() { |
| 69 | + return false |
| 70 | + } |
| 71 | + const circular = true |
| 72 | + |
| 73 | + expect( |
| 74 | + getHighlightedIndex(start, offset, items, isItemDisabled, circular), |
| 75 | + ).toEqual(2) |
| 76 | +}) |
| 77 | + |
| 78 | +test('should not wrap to last if not circular and reached start', () => { |
| 79 | + const offset = -3 |
| 80 | + const start = 2 |
| 81 | + const items = {length: 3} |
| 82 | + function isItemDisabled() { |
| 83 | + return false |
| 84 | + } |
| 85 | + const circular = false |
| 86 | + |
| 87 | + expect( |
| 88 | + getHighlightedIndex(start, offset, items, isItemDisabled, circular), |
| 89 | + ).toEqual(0) |
| 90 | +}) |
| 91 | + |
| 92 | +test('should skip disabled when moving downwards', () => { |
| 93 | + const offset = 1 |
| 94 | + const start = 0 |
| 95 | + const items = {length: 3} |
| 96 | + function isItemDisabled(_item, index) { |
| 97 | + return index === 1 |
| 98 | + } |
| 99 | + |
| 100 | + expect(getHighlightedIndex(start, offset, items, isItemDisabled)).toEqual(2) |
| 101 | +}) |
| 102 | + |
| 103 | +test('should skip disabled when moving upwards', () => { |
| 104 | + const offset = -1 |
| 105 | + const start = 2 |
| 106 | + const items = {length: 3} |
| 107 | + function isItemDisabled(_item, index) { |
| 108 | + return index === 1 |
| 109 | + } |
| 110 | + |
| 111 | + expect(getHighlightedIndex(start, offset, items, isItemDisabled)).toEqual(0) |
| 112 | +}) |
| 113 | + |
| 114 | +test('should skip disabled and wrap to last if circular when reaching first', () => { |
| 115 | + const offset = -1 |
| 116 | + const start = 1 |
| 117 | + const items = {length: 3} |
| 118 | + function isItemDisabled(_item, index) { |
| 119 | + return index === 0 |
| 120 | + } |
| 121 | + const circular = true |
| 122 | + |
| 123 | + expect( |
| 124 | + getHighlightedIndex(start, offset, items, isItemDisabled, circular), |
| 125 | + ).toEqual(2) |
| 126 | +}) |
| 127 | + |
| 128 | +test('should skip disabled and wrap to second to last if circular when reaching first and last is disabled', () => { |
| 129 | + const offset = -1 |
| 130 | + const start = 1 |
| 131 | + const items = {length: 3} |
| 132 | + function isItemDisabled(_item, index) { |
| 133 | + return [0, 2].includes(index) |
| 134 | + } |
| 135 | + const circular = true |
| 136 | + |
| 137 | + expect( |
| 138 | + getHighlightedIndex(start, offset, items, isItemDisabled, circular), |
| 139 | + ).toEqual(1) |
| 140 | +}) |
| 141 | + |
| 142 | +test('should skip disabled and not wrap to last if circular when reaching first', () => { |
| 143 | + const offset = -1 |
| 144 | + const start = 1 |
| 145 | + const items = {length: 3} |
| 146 | + function isItemDisabled(_item, index) { |
| 147 | + return index === 0 |
| 148 | + } |
| 149 | + const circular = false |
| 150 | + |
| 151 | + expect( |
| 152 | + getHighlightedIndex(start, offset, items, isItemDisabled, circular), |
| 153 | + ).toEqual(1) |
| 154 | +}) |
| 155 | + |
| 156 | +test('should skip disabled and wrap to first if circular when reaching last', () => { |
| 157 | + const offset = 1 |
| 158 | + const start = 1 |
| 159 | + const items = {length: 3} |
| 160 | + function isItemDisabled(_item, index) { |
| 161 | + return index === 2 |
| 162 | + } |
| 163 | + const circular = true |
| 164 | + |
| 165 | + expect( |
| 166 | + getHighlightedIndex(start, offset, items, isItemDisabled, circular), |
| 167 | + ).toEqual(0) |
| 168 | +}) |
| 169 | + |
| 170 | +test('should skip disabled and wrap to second if circular when reaching last and first is disabled', () => { |
| 171 | + const offset = 1 |
| 172 | + const start = 1 |
| 173 | + const items = {length: 3} |
| 174 | + function isItemDisabled(_item, index) { |
| 175 | + return [0, 2].includes(index) |
| 176 | + } |
| 177 | + const circular = true |
| 178 | + |
| 179 | + expect( |
| 180 | + getHighlightedIndex(start, offset, items, isItemDisabled, circular), |
| 181 | + ).toEqual(1) |
| 182 | +}) |
| 183 | + |
| 184 | +test('should skip disabled and not wrap to first if circular when reaching last', () => { |
| 185 | + const offset = 1 |
| 186 | + const start = 1 |
| 187 | + const items = {length: 3} |
| 188 | + function isItemDisabled(_item, index) { |
| 189 | + return index === 2 |
| 190 | + } |
| 191 | + const circular = false |
| 192 | + |
| 193 | + expect( |
| 194 | + getHighlightedIndex(start, offset, items, isItemDisabled, circular), |
| 195 | + ).toEqual(1) |
| 196 | +}) |
| 197 | + |
| 198 | +test('should not select any if all disabled when arrow up', () => { |
| 199 | + const offset = -1 |
| 200 | + const start = -1 |
| 201 | + const items = {length: 3} |
| 202 | + function isItemDisabled() { |
| 203 | + return true |
| 204 | + } |
| 205 | + const circular = true |
| 206 | + |
| 207 | + expect( |
| 208 | + getHighlightedIndex(start, offset, items, isItemDisabled, circular), |
| 209 | + ).toEqual(-1) |
| 210 | +}) |
| 211 | + |
| 212 | +test('should not select any if all disabled when arrow down', () => { |
| 213 | + const offset = 1 |
| 214 | + const start = -1 |
| 215 | + const items = {length: 3} |
| 216 | + function isItemDisabled() { |
| 217 | + return true |
| 218 | + } |
| 219 | + const circular = true |
| 220 | + |
| 221 | + expect( |
| 222 | + getHighlightedIndex(start, offset, items, isItemDisabled, circular), |
| 223 | + ).toEqual(-1) |
| 224 | +}) |
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