78 lines
2.0 KiB
JavaScript
78 lines
2.0 KiB
JavaScript
import * as t from 'lib0/testing.js'
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import { init, compare } from './testHelper.js' // eslint-disable-line
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import * as Y from '../src/index.js'
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/**
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* @param {Array<Y.Doc>} users
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*/
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const fromUpdates = users => {
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const updates = users.map(user =>
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Y.encodeStateAsUpdate(user)
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)
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const ydoc = new Y.Doc()
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Y.applyUpdate(ydoc, Y.mergeUpdates(updates))
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return ydoc
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}
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/**
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* @param {t.TestCase} tc
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*/
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export const testMergeUpdates = tc => {
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const { users, array0, array1 } = init(tc, { users: 3 })
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array0.insert(0, [1])
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array1.insert(0, [2])
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const merged = fromUpdates(users)
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compare(users)
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t.compareArrays(array0.toArray(), merged.getArray('array').toArray())
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}
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/**
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* @param {t.TestCase} tc
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*/
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export const testMergeUpdatesWrongOrder = tc => {
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const ydoc = new Y.Doc()
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const updates = /** @type {Array<Uint8Array>} */ ([])
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ydoc.on('update', update => { updates.push(update) })
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const array = ydoc.getArray()
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array.insert(0, [1])
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array.insert(0, [2])
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array.insert(0, [3])
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array.insert(0, [4])
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const wrongOrder = Y.mergeUpdates([
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Y.mergeUpdates(updates.slice(2)),
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Y.mergeUpdates(updates.slice(0, 2))
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])
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const overlapping = Y.mergeUpdates([
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Y.mergeUpdates(updates.slice(2)),
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Y.mergeUpdates(updates.slice(1, 3)),
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updates[0]
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])
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const separated = Y.mergeUpdates([
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Y.mergeUpdates([updates[0], updates[2]]),
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Y.mergeUpdates([updates[1], updates[3]])
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])
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const targetState = Y.encodeStateAsUpdate(ydoc)
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t.info('Target State: ')
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Y.logUpdate(targetState)
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const allcases = [wrongOrder, overlapping, separated]
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// case 4: merging all cases above
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allcases.push(Y.mergeUpdates(allcases))
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allcases.forEach((updates, i) => {
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t.info('State $' + i + ':')
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Y.logUpdate(updates)
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const merged = new Y.Doc()
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Y.applyUpdate(merged, updates)
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t.compareArrays(merged.getArray().toArray(), array.toArray())
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t.compare(updates, targetState)
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})
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}
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/**
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* @todo be able to apply Skip structs to Yjs docs
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*/
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