overleaf/services/document-updater/test/unit/js/ShareJsUpdateManager/ShareJsUpdateManagerTests.js

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/* eslint-disable
no-return-assign,
no-unused-vars,
*/
// TODO: This file was created by bulk-decaffeinate.
// Fix any style issues and re-enable lint.
/*
* decaffeinate suggestions:
* DS102: Remove unnecessary code created because of implicit returns
* Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
*/
const sinon = require('sinon')
const chai = require('chai')
const should = chai.should()
const modulePath = '../../../../app/js/ShareJsUpdateManager.js'
const SandboxedModule = require('sandboxed-module')
const crypto = require('crypto')
describe('ShareJsUpdateManager', function () {
beforeEach(function () {
let Model
this.project_id = 'project-id-123'
this.doc_id = 'document-id-123'
this.callback = sinon.stub()
return (this.ShareJsUpdateManager = SandboxedModule.require(modulePath, {
requires: {
'./sharejs/server/model': (Model = class Model {
constructor(db) {
this.db = db
}
}),
'./ShareJsDB': (this.ShareJsDB = { mockDB: true }),
'@overleaf/redis-wrapper': {
createClient: () => {
return (this.rclient = { auth() {} })
}
},
'logger-sharelatex': (this.logger = { log: sinon.stub() }),
'./RealTimeRedisManager': (this.RealTimeRedisManager = {}),
'./Metrics': (this.metrics = { inc: sinon.stub() })
},
globals: {
clearTimeout: (this.clearTimeout = sinon.stub())
}
}))
})
describe('applyUpdate', function () {
beforeEach(function () {
this.lines = ['one', 'two']
this.version = 34
this.updatedDocLines = ['onefoo', 'two']
const content = this.updatedDocLines.join('\n')
this.hash = crypto
.createHash('sha1')
.update('blob ' + content.length + '\x00')
.update(content, 'utf8')
.digest('hex')
this.update = { p: 4, t: 'foo', v: this.version, hash: this.hash }
this.model = {
applyOp: sinon.stub().callsArg(2),
getSnapshot: sinon.stub(),
db: {
appliedOps: {}
}
}
this.ShareJsUpdateManager.getNewShareJsModel = sinon
.stub()
.returns(this.model)
this.ShareJsUpdateManager._listenForOps = sinon.stub()
return (this.ShareJsUpdateManager.removeDocFromCache = sinon
.stub()
.callsArg(1))
})
describe('successfully', function () {
beforeEach(function (done) {
this.model.getSnapshot.callsArgWith(1, null, {
snapshot: this.updatedDocLines.join('\n'),
v: this.version
})
this.model.db.appliedOps[
`${this.project_id}:${this.doc_id}`
] = this.appliedOps = ['mock-ops']
return this.ShareJsUpdateManager.applyUpdate(
this.project_id,
this.doc_id,
this.update,
this.lines,
this.version,
(err, docLines, version, appliedOps) => {
this.callback(err, docLines, version, appliedOps)
return done()
}
)
})
it('should create a new ShareJs model', function () {
return this.ShareJsUpdateManager.getNewShareJsModel
.calledWith(this.project_id, this.doc_id, this.lines, this.version)
.should.equal(true)
})
it('should listen for ops on the model', function () {
return this.ShareJsUpdateManager._listenForOps
.calledWith(this.model)
.should.equal(true)
})
it('should send the update to ShareJs', function () {
return this.model.applyOp
.calledWith(`${this.project_id}:${this.doc_id}`, this.update)
.should.equal(true)
})
it('should get the updated doc lines', function () {
return this.model.getSnapshot
.calledWith(`${this.project_id}:${this.doc_id}`)
.should.equal(true)
})
return it('should return the updated doc lines, version and ops', function () {
return this.callback
.calledWith(null, this.updatedDocLines, this.version, this.appliedOps)
.should.equal(true)
})
})
describe('when applyOp fails', function () {
beforeEach(function (done) {
this.error = new Error('Something went wrong')
this.model.applyOp = sinon.stub().callsArgWith(2, this.error)
return this.ShareJsUpdateManager.applyUpdate(
this.project_id,
this.doc_id,
this.update,
this.lines,
this.version,
(err, docLines, version) => {
this.callback(err, docLines, version)
return done()
}
)
})
return it('should call the callback with the error', function () {
return this.callback.calledWith(this.error).should.equal(true)
})
})
describe('when getSnapshot fails', function () {
beforeEach(function (done) {
this.error = new Error('Something went wrong')
this.model.getSnapshot.callsArgWith(1, this.error)
return this.ShareJsUpdateManager.applyUpdate(
this.project_id,
this.doc_id,
this.update,
this.lines,
this.version,
(err, docLines, version) => {
this.callback(err, docLines, version)
return done()
}
)
})
return it('should call the callback with the error', function () {
return this.callback.calledWith(this.error).should.equal(true)
})
})
return describe('with an invalid hash', function () {
beforeEach(function (done) {
this.error = new Error('invalid hash')
this.model.getSnapshot.callsArgWith(1, null, {
snapshot: 'unexpected content',
v: this.version
})
this.model.db.appliedOps[
`${this.project_id}:${this.doc_id}`
] = this.appliedOps = ['mock-ops']
return this.ShareJsUpdateManager.applyUpdate(
this.project_id,
this.doc_id,
this.update,
this.lines,
this.version,
(err, docLines, version, appliedOps) => {
this.callback(err, docLines, version, appliedOps)
return done()
}
)
})
return it('should call the callback with the error', function () {
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return this.callback
.calledWith(sinon.match.instanceOf(Error))
.should.equal(true)
})
})
})
return describe('_listenForOps', function () {
beforeEach(function () {
this.model = {
on: (event, callback) => {
return (this.callback = callback)
}
}
sinon.spy(this.model, 'on')
return this.ShareJsUpdateManager._listenForOps(this.model)
})
it('should listen to the model for updates', function () {
return this.model.on.calledWith('applyOp').should.equal(true)
})
return describe('the callback', function () {
beforeEach(function () {
this.opData = {
op: { t: 'foo', p: 1 },
meta: { source: 'bar' }
}
this.RealTimeRedisManager.sendData = sinon.stub()
return this.callback(`${this.project_id}:${this.doc_id}`, this.opData)
})
return it('should publish the op to redis', function () {
return this.RealTimeRedisManager.sendData
.calledWith({
project_id: this.project_id,
doc_id: this.doc_id,
op: this.opData
})
.should.equal(true)
})
})
})
})