Spaces:
Sleeping
Sleeping
File size: 5,605 Bytes
13555f3 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 | // Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
import undoManager from './undomanager'
test('Basic undo/redo', async () => {
expect(undoManager.canUndo).toBe(false)
expect(undoManager.canRedo).toBe(false)
expect(undoManager.currentCheckpoint).toBe(0)
const values: string[] = []
await undoManager.perform(
async () => {
values.push('a')
},
async () => {
values.pop()
},
'test',
)
expect(undoManager.canUndo).toBe(true)
expect(undoManager.canRedo).toBe(false)
expect(undoManager.currentCheckpoint).toBeGreaterThan(0)
expect(values).toEqual(['a'])
expect(undoManager.undoDescription).toBe('test')
expect(undoManager.redoDescription).toBe(undefined)
await undoManager.undo()
expect(undoManager.canUndo).toBe(false)
expect(undoManager.canRedo).toBe(true)
expect(values).toEqual([])
expect(undoManager.undoDescription).toBe(undefined)
expect(undoManager.redoDescription).toBe('test')
await undoManager.redo()
expect(undoManager.canUndo).toBe(true)
expect(undoManager.canRedo).toBe(false)
expect(values).toEqual(['a'])
await undoManager.clear()
expect(undoManager.canUndo).toBe(false)
expect(undoManager.canRedo).toBe(false)
expect(undoManager.currentCheckpoint).toBe(0)
expect(undoManager.undoDescription).toBe(undefined)
expect(undoManager.redoDescription).toBe(undefined)
})
test('Basic undo/redo response dependant', async () => {
expect(undoManager.canUndo).toBe(false)
expect(undoManager.canRedo).toBe(false)
expect(undoManager.currentCheckpoint).toBe(0)
const blockIds = [2, 1]
const blocks: Record<string, any> = {}
const newBlock = await undoManager.perform(
async () => {
const responseId = blockIds.pop() // every time we run the action a new ID is obtained
const block: Record<string, any> = {id: responseId, title: 'Sample'}
blocks[block.id] = block
return block
},
async (block: Record<string, any>) => {
delete blocks[block.id]
},
'test',
)
// should insert the block and return the new block for its use
expect(undoManager.canUndo).toBe(true)
expect(undoManager.canRedo).toBe(false)
expect(blocks).toHaveProperty('1')
expect(blocks[1]).toEqual(newBlock)
// should correctly remove the block based on the info gathered in
// the redo function
await undoManager.undo()
expect(undoManager.canUndo).toBe(false)
expect(undoManager.canRedo).toBe(true)
expect(blocks).not.toHaveProperty('1')
// when redoing, as the function has side effects the new id will
// be different
await undoManager.redo()
expect(undoManager.canUndo).toBe(true)
expect(undoManager.canRedo).toBe(false)
expect(blocks).not.toHaveProperty('1')
expect(blocks).toHaveProperty('2')
expect(blocks[2].id).toEqual(2)
// when undoing, the undo manager has saved the new id internally
// and it removes the right block
await undoManager.undo()
expect(undoManager.canUndo).toBe(false)
expect(undoManager.canRedo).toBe(true)
expect(blocks).not.toHaveProperty('2')
await undoManager.clear()
})
test('Grouped undo/redo', async () => {
expect(undoManager.canUndo).toBe(false)
expect(undoManager.canRedo).toBe(false)
const values: string[] = []
const groupId = 'the group id'
await undoManager.perform(
async () => {
values.push('a')
},
async () => {
values.pop()
},
'insert a',
)
expect(undoManager.canUndo).toBe(true)
expect(undoManager.canRedo).toBe(false)
expect(values).toEqual(['a'])
expect(undoManager.undoDescription).toBe('insert a')
expect(undoManager.redoDescription).toBe(undefined)
await undoManager.perform(
async () => {
values.push('b')
},
async () => {
values.pop()
},
'insert b',
groupId,
)
expect(undoManager.canUndo).toBe(true)
expect(undoManager.canRedo).toBe(false)
expect(values).toEqual(['a', 'b'])
expect(undoManager.undoDescription).toBe('insert b')
expect(undoManager.redoDescription).toBe(undefined)
await undoManager.perform(
async () => {
values.push('c')
},
async () => {
values.pop()
},
'insert c',
groupId,
)
expect(undoManager.canUndo).toBe(true)
expect(undoManager.canRedo).toBe(false)
expect(values).toEqual(['a', 'b', 'c'])
expect(undoManager.undoDescription).toBe('insert c')
expect(undoManager.redoDescription).toBe(undefined)
await undoManager.undo()
expect(undoManager.canUndo).toBe(true)
expect(undoManager.canRedo).toBe(true)
expect(values).toEqual(['a'])
expect(undoManager.undoDescription).toBe('insert a')
expect(undoManager.redoDescription).toBe('insert b')
await undoManager.redo()
expect(undoManager.canUndo).toBe(true)
expect(undoManager.canRedo).toBe(false)
expect(values).toEqual(['a', 'b', 'c'])
expect(undoManager.undoDescription).toBe('insert c')
expect(undoManager.redoDescription).toBe(undefined)
await undoManager.clear()
expect(undoManager.canUndo).toBe(false)
expect(undoManager.canRedo).toBe(false)
expect(undoManager.undoDescription).toBe(undefined)
expect(undoManager.redoDescription).toBe(undefined)
})
|