yjs/tests/relativePositions.tests.js

146 lines
4.4 KiB
JavaScript

import * as Y from '../src/index.js'
import * as t from 'lib0/testing'
/**
* @param {Y.Text} ytext
*/
const checkRelativePositions = ytext => {
// test if all positions are encoded and restored correctly
for (let i = 0; i < ytext.length; i++) {
// for all types of associations..
for (let assoc = -1; assoc < 2; assoc++) {
const rpos = Y.createRelativePositionFromTypeIndex(ytext, i, assoc)
const encodedRpos = Y.encodeRelativePosition(rpos)
const decodedRpos = Y.decodeRelativePosition(encodedRpos)
const absPos = /** @type {Y.AbsolutePosition} */ (Y.createAbsolutePositionFromRelativePosition(decodedRpos, /** @type {Y.Doc} */ (ytext.doc)))
t.assert(absPos.index === i)
t.assert(absPos.assoc === assoc)
}
}
}
/**
* @param {t.TestCase} tc
*/
export const testRelativePositionCase1 = tc => {
const ydoc = new Y.Doc()
const ytext = ydoc.getText()
ytext.insert(0, '1')
ytext.insert(0, 'abc')
ytext.insert(0, 'z')
ytext.insert(0, 'y')
ytext.insert(0, 'x')
checkRelativePositions(ytext)
}
/**
* @param {t.TestCase} tc
*/
export const testRelativePositionCase2 = tc => {
const ydoc = new Y.Doc()
const ytext = ydoc.getText()
ytext.insert(0, 'abc')
checkRelativePositions(ytext)
}
/**
* @param {t.TestCase} tc
*/
export const testRelativePositionCase3 = tc => {
const ydoc = new Y.Doc()
const ytext = ydoc.getText()
ytext.insert(0, 'abc')
ytext.insert(0, '1')
ytext.insert(0, 'xyz')
checkRelativePositions(ytext)
}
/**
* @param {t.TestCase} tc
*/
export const testRelativePositionCase4 = tc => {
const ydoc = new Y.Doc()
const ytext = ydoc.getText()
ytext.insert(0, '1')
checkRelativePositions(ytext)
}
/**
* @param {t.TestCase} tc
*/
export const testRelativePositionCase5 = tc => {
const ydoc = new Y.Doc()
const ytext = ydoc.getText()
ytext.insert(0, '2')
ytext.insert(0, '1')
checkRelativePositions(ytext)
}
/**
* @param {t.TestCase} tc
*/
export const testRelativePositionCase6 = tc => {
const ydoc = new Y.Doc()
const ytext = ydoc.getText()
checkRelativePositions(ytext)
}
/**
* Testing https://github.com/yjs/yjs/issues/657
*
* @param {t.TestCase} tc
*/
export const testRelativePositionCase7 = tc => {
const docA = new Y.Doc()
const textA = docA.getText('text')
textA.insert(0, 'abcde')
// Create a relative position at index 2 in 'textA'
const relativePosition = Y.createRelativePositionFromTypeIndex(textA, 2)
// Verify that the absolutes positions on 'docA' are the same
const absolutePositionWithFollow =
Y.createAbsolutePositionFromRelativePosition(relativePosition, docA, true)
const absolutePositionWithoutFollow =
Y.createAbsolutePositionFromRelativePosition(relativePosition, docA, false)
t.assert(absolutePositionWithFollow?.index === 2)
t.assert(absolutePositionWithoutFollow?.index === 2)
}
/**
* @param {t.TestCase} tc
*/
export const testRelativePositionAssociationDifference = tc => {
const ydoc = new Y.Doc()
const ytext = ydoc.getText()
ytext.insert(0, '2')
ytext.insert(0, '1')
const rposRight = Y.createRelativePositionFromTypeIndex(ytext, 1, 0)
const rposLeft = Y.createRelativePositionFromTypeIndex(ytext, 1, -1)
ytext.insert(1, 'x')
const posRight = Y.createAbsolutePositionFromRelativePosition(rposRight, ydoc)
const posLeft = Y.createAbsolutePositionFromRelativePosition(rposLeft, ydoc)
t.assert(posRight != null && posRight.index === 2)
t.assert(posLeft != null && posLeft.index === 1)
}
/**
* @param {t.TestCase} tc
*/
export const testRelativePositionWithUndo = tc => {
const ydoc = new Y.Doc()
const ytext = ydoc.getText()
ytext.insert(0, 'hello world')
const rpos = Y.createRelativePositionFromTypeIndex(ytext, 1)
const um = new Y.UndoManager(ytext)
ytext.delete(0, 6)
t.assert(Y.createAbsolutePositionFromRelativePosition(rpos, ydoc)?.index === 0)
um.undo()
t.assert(Y.createAbsolutePositionFromRelativePosition(rpos, ydoc)?.index === 1)
const posWithoutFollow = Y.createAbsolutePositionFromRelativePosition(rpos, ydoc, false)
console.log({ posWithoutFollow })
t.assert(Y.createAbsolutePositionFromRelativePosition(rpos, ydoc, false)?.index === 6)
const ydocClone = new Y.Doc()
Y.applyUpdate(ydocClone, Y.encodeStateAsUpdate(ydoc))
t.assert(Y.createAbsolutePositionFromRelativePosition(rpos, ydocClone)?.index === 6)
t.assert(Y.createAbsolutePositionFromRelativePosition(rpos, ydocClone, false)?.index === 6)
}