55 lines
1.8 KiB
JavaScript
55 lines
1.8 KiB
JavaScript
// @ts-check
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const { createHash } = require('node:crypto')
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const { expect } = require('chai')
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const Utils = require('../../../app/js/Utils')
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describe('Utils', function () {
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describe('addTrackedDeletesToContent', function () {
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it("doesn't modify text without tracked deletes", function () {
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const content = 'the quick brown fox'
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const trackedChanges = []
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const result = Utils.addTrackedDeletesToContent(content, trackedChanges)
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expect(result).to.equal(content)
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})
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it('adds tracked deletes to text but skips tracked inserts', function () {
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const content = 'the brown fox jumps over the dog'
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const metadata = { user_id: 'user1', ts: new Date().toString() }
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const trackedChanges = [
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{ id: 'tc1', op: { d: 'quick ', p: 4 }, metadata },
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{ id: 'tc2', op: { i: 'brown ', p: 5 }, metadata },
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{ id: 'tc3', op: { d: 'lazy ', p: 29 }, metadata },
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]
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const result = Utils.addTrackedDeletesToContent(content, trackedChanges)
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expect(result).to.equal('the quick brown fox jumps over the lazy dog')
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})
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})
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describe('computeDocHash', function () {
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it('computes the hash for an empty doc', function () {
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const actual = Utils.computeDocHash([])
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const expected = stringHash('')
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expect(actual).to.equal(expected)
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})
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it('computes the hash for a single-line doc', function () {
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const actual = Utils.computeDocHash(['hello'])
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const expected = stringHash('hello')
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expect(actual).to.equal(expected)
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})
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it('computes the hash for a multiline doc', function () {
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const actual = Utils.computeDocHash(['hello', 'there', 'world'])
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const expected = stringHash('hello\nthere\nworld')
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expect(actual).to.equal(expected)
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})
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})
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})
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function stringHash(s) {
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const hash = createHash('sha1')
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hash.update(s)
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return hash.digest('hex')
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}
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