overleaf/services/document-updater/test/acceptance/js/SettingADocumentTests.js

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const sinon = require('sinon')
const { expect } = require('chai')
const Settings = require('@overleaf/settings')
const docUpdaterRedis = require('@overleaf/redis-wrapper').createClient(
Settings.redis.documentupdater
)
const Keys = Settings.redis.documentupdater.key_schema
const MockTrackChangesApi = require('./helpers/MockTrackChangesApi')
const MockProjectHistoryApi = require('./helpers/MockProjectHistoryApi')
const MockWebApi = require('./helpers/MockWebApi')
const DocUpdaterClient = require('./helpers/DocUpdaterClient')
const DocUpdaterApp = require('./helpers/DocUpdaterApp')
describe('Setting a document', function () {
let numberOfReceivedUpdates = 0
before(function (done) {
DocUpdaterClient.subscribeToAppliedOps(() => {
numberOfReceivedUpdates++
})
this.lines = ['one', 'two', 'three']
this.version = 42
this.update = {
doc: this.doc_id,
op: [
{
i: 'one and a half\n',
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p: 4,
},
],
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v: this.version,
}
this.result = ['one', 'one and a half', 'two', 'three']
this.newLines = ['these', 'are', 'the', 'new', 'lines']
this.source = 'dropbox'
this.user_id = 'user-id-123'
sinon.spy(MockTrackChangesApi, 'flushDoc')
sinon.spy(MockProjectHistoryApi, 'flushProject')
sinon.spy(MockWebApi, 'setDocument')
DocUpdaterApp.ensureRunning(done)
})
after(function () {
MockTrackChangesApi.flushDoc.restore()
MockProjectHistoryApi.flushProject.restore()
MockWebApi.setDocument.restore()
})
describe('when the updated doc exists in the doc updater', function () {
before(function (done) {
numberOfReceivedUpdates = 0
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this.project_id = DocUpdaterClient.randomId()
this.doc_id = DocUpdaterClient.randomId()
MockWebApi.insertDoc(this.project_id, this.doc_id, {
lines: this.lines,
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version: this.version,
})
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DocUpdaterClient.preloadDoc(this.project_id, this.doc_id, error => {
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if (error) {
throw error
}
DocUpdaterClient.sendUpdate(
this.project_id,
this.doc_id,
this.update,
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error => {
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if (error) {
throw error
}
setTimeout(() => {
DocUpdaterClient.setDocLines(
this.project_id,
this.doc_id,
this.newLines,
this.source,
this.user_id,
false,
(error, res, body) => {
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if (error) {
return done(error)
}
this.statusCode = res.statusCode
this.body = body
done()
}
)
}, 200)
}
)
})
})
after(function () {
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MockTrackChangesApi.flushDoc.resetHistory()
MockProjectHistoryApi.flushProject.resetHistory()
MockWebApi.setDocument.resetHistory()
})
it('should return a 200 status code', function () {
this.statusCode.should.equal(200)
})
it('should emit two updates (from sendUpdate and setDocLines)', function () {
expect(numberOfReceivedUpdates).to.equal(2)
})
it('should send the updated doc lines and version to the web api', function () {
MockWebApi.setDocument
.calledWith(this.project_id, this.doc_id, this.newLines)
.should.equal(true)
})
it('should update the lines in the doc updater', function (done) {
DocUpdaterClient.getDoc(
this.project_id,
this.doc_id,
(error, res, doc) => {
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if (error) {
return done(error)
}
doc.lines.should.deep.equal(this.newLines)
done()
}
)
})
it('should bump the version in the doc updater', function (done) {
DocUpdaterClient.getDoc(
this.project_id,
this.doc_id,
(error, res, doc) => {
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if (error) {
return done(error)
}
doc.version.should.equal(this.version + 2)
done()
}
)
})
it('should leave the document in redis', function (done) {
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docUpdaterRedis.get(
Keys.docLines({ doc_id: this.doc_id }),
(error, lines) => {
if (error) {
throw error
}
expect(JSON.parse(lines)).to.deep.equal(this.newLines)
done()
}
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)
})
it('should return the mongo rev in the json response', function () {
this.body.should.deep.equal({ rev: '123' })
})
describe('when doc has the same contents', function () {
beforeEach(function (done) {
numberOfReceivedUpdates = 0
DocUpdaterClient.setDocLines(
this.project_id,
this.doc_id,
this.newLines,
this.source,
this.user_id,
false,
(error, res, body) => {
if (error) {
return done(error)
}
this.statusCode = res.statusCode
this.body = body
done()
}
)
})
it('should not bump the version in doc updater', function (done) {
DocUpdaterClient.getDoc(
this.project_id,
this.doc_id,
(error, res, doc) => {
if (error) {
return done(error)
}
doc.version.should.equal(this.version + 2)
done()
}
)
})
it('should not emit any updates', function (done) {
setTimeout(() => {
expect(numberOfReceivedUpdates).to.equal(0)
done()
}, 100) // delay by 100ms: make sure we do not check too early!
})
})
})
describe('when the updated doc does not exist in the doc updater', function () {
before(function (done) {
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this.project_id = DocUpdaterClient.randomId()
this.doc_id = DocUpdaterClient.randomId()
numberOfReceivedUpdates = 0
MockWebApi.insertDoc(this.project_id, this.doc_id, {
lines: this.lines,
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version: this.version,
})
DocUpdaterClient.setDocLines(
this.project_id,
this.doc_id,
this.newLines,
this.source,
this.user_id,
false,
(error, res, body) => {
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if (error) {
return done(error)
}
this.statusCode = res.statusCode
this.body = body
setTimeout(done, 200)
}
)
})
after(function () {
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MockTrackChangesApi.flushDoc.resetHistory()
MockProjectHistoryApi.flushProject.resetHistory()
MockWebApi.setDocument.resetHistory()
})
it('should return a 200 status code', function () {
this.statusCode.should.equal(200)
})
it('should emit an update', function () {
expect(numberOfReceivedUpdates).to.equal(1)
})
it('should send the updated doc lines to the web api', function () {
MockWebApi.setDocument
.calledWith(this.project_id, this.doc_id, this.newLines)
.should.equal(true)
})
it('should flush track changes', function () {
MockTrackChangesApi.flushDoc.calledWith(this.doc_id).should.equal(true)
})
it('should flush project history', function () {
MockProjectHistoryApi.flushProject
.calledWith(this.project_id)
.should.equal(true)
})
it('should remove the document from redis', function (done) {
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docUpdaterRedis.get(
Keys.docLines({ doc_id: this.doc_id }),
(error, lines) => {
if (error) {
throw error
}
expect(lines).to.not.exist
done()
}
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)
})
it('should return the mongo rev in the json response', function () {
this.body.should.deep.equal({ rev: '123' })
})
})
const DOC_TOO_LARGE_TEST_CASES = [
{
desc: 'when the updated doc is too large for the body parser',
size: Settings.maxJsonRequestSize,
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expectedStatusCode: 413,
},
{
desc: 'when the updated doc is larger than the HTTP controller limit',
size: Settings.max_doc_length,
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expectedStatusCode: 406,
},
]
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DOC_TOO_LARGE_TEST_CASES.forEach(testCase => {
describe(testCase.desc, function () {
before(function (done) {
this.project_id = DocUpdaterClient.randomId()
this.doc_id = DocUpdaterClient.randomId()
MockWebApi.insertDoc(this.project_id, this.doc_id, {
lines: this.lines,
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version: this.version,
})
this.newLines = []
while (JSON.stringify(this.newLines).length <= testCase.size) {
this.newLines.push('(a long line of text)'.repeat(10000))
}
DocUpdaterClient.setDocLines(
this.project_id,
this.doc_id,
this.newLines,
this.source,
this.user_id,
false,
(error, res, body) => {
if (error) {
return done(error)
}
this.statusCode = res.statusCode
setTimeout(done, 200)
}
)
})
after(function () {
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MockTrackChangesApi.flushDoc.resetHistory()
MockProjectHistoryApi.flushProject.resetHistory()
MockWebApi.setDocument.resetHistory()
})
it(`should return a ${testCase.expectedStatusCode} status code`, function () {
this.statusCode.should.equal(testCase.expectedStatusCode)
})
it('should not send the updated doc lines to the web api', function () {
MockWebApi.setDocument.called.should.equal(false)
})
it('should not flush track changes', function () {
MockTrackChangesApi.flushDoc.called.should.equal(false)
})
it('should not flush project history', function () {
MockProjectHistoryApi.flushProject.called.should.equal(false)
})
})
})
describe('when the updated doc is large but under the bodyParser and HTTPController size limit', function () {
before(function (done) {
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this.project_id = DocUpdaterClient.randomId()
this.doc_id = DocUpdaterClient.randomId()
MockWebApi.insertDoc(this.project_id, this.doc_id, {
lines: this.lines,
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version: this.version,
})
this.newLines = []
while (JSON.stringify(this.newLines).length < 2 * 1024 * 1024) {
// limit in HTTPController
this.newLines.push('(a long line of text)'.repeat(10000))
}
this.newLines.pop() // remove the line which took it over the limit
DocUpdaterClient.setDocLines(
this.project_id,
this.doc_id,
this.newLines,
this.source,
this.user_id,
false,
(error, res, body) => {
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if (error) {
return done(error)
}
this.statusCode = res.statusCode
this.body = body
setTimeout(done, 200)
}
)
})
after(function () {
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MockTrackChangesApi.flushDoc.resetHistory()
MockProjectHistoryApi.flushProject.resetHistory()
MockWebApi.setDocument.resetHistory()
})
it('should return a 200 status code', function () {
this.statusCode.should.equal(200)
})
it('should send the updated doc lines to the web api', function () {
MockWebApi.setDocument
.calledWith(this.project_id, this.doc_id, this.newLines)
.should.equal(true)
})
it('should return the mongo rev in the json response', function () {
this.body.should.deep.equal({ rev: '123' })
})
})
describe('with track changes', function () {
before(function () {
this.lines = ['one', 'one and a half', 'two', 'three']
this.id_seed = '587357bd35e64f6157'
this.update = {
doc: this.doc_id,
op: [
{
d: 'one and a half\n',
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p: 4,
},
],
meta: {
tc: this.id_seed,
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user_id: this.user_id,
},
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v: this.version,
}
})
describe('with the undo flag', function () {
before(function (done) {
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this.project_id = DocUpdaterClient.randomId()
this.doc_id = DocUpdaterClient.randomId()
MockWebApi.insertDoc(this.project_id, this.doc_id, {
lines: this.lines,
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version: this.version,
})
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DocUpdaterClient.preloadDoc(this.project_id, this.doc_id, error => {
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if (error) {
throw error
}
DocUpdaterClient.sendUpdate(
this.project_id,
this.doc_id,
this.update,
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error => {
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if (error) {
throw error
}
// Go back to old lines, with undo flag
DocUpdaterClient.setDocLines(
this.project_id,
this.doc_id,
this.lines,
this.source,
this.user_id,
true,
(error, res, body) => {
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if (error) {
return done(error)
}
this.statusCode = res.statusCode
setTimeout(done, 200)
}
)
}
)
})
})
after(function () {
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MockTrackChangesApi.flushDoc.resetHistory()
MockProjectHistoryApi.flushProject.resetHistory()
MockWebApi.setDocument.resetHistory()
})
it('should undo the tracked changes', function (done) {
DocUpdaterClient.getDoc(
this.project_id,
this.doc_id,
(error, res, data) => {
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if (error) {
throw error
}
const { ranges } = data
expect(ranges.changes).to.be.undefined
done()
}
)
})
})
describe('without the undo flag', function () {
before(function (done) {
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this.project_id = DocUpdaterClient.randomId()
this.doc_id = DocUpdaterClient.randomId()
MockWebApi.insertDoc(this.project_id, this.doc_id, {
lines: this.lines,
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version: this.version,
})
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DocUpdaterClient.preloadDoc(this.project_id, this.doc_id, error => {
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if (error) {
throw error
}
DocUpdaterClient.sendUpdate(
this.project_id,
this.doc_id,
this.update,
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error => {
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if (error) {
throw error
}
// Go back to old lines, without undo flag
DocUpdaterClient.setDocLines(
this.project_id,
this.doc_id,
this.lines,
this.source,
this.user_id,
false,
(error, res, body) => {
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if (error) {
return done(error)
}
this.statusCode = res.statusCode
setTimeout(done, 200)
}
)
}
)
})
})
after(function () {
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MockTrackChangesApi.flushDoc.resetHistory()
MockProjectHistoryApi.flushProject.resetHistory()
MockWebApi.setDocument.resetHistory()
})
it('should not undo the tracked changes', function (done) {
DocUpdaterClient.getDoc(
this.project_id,
this.doc_id,
(error, res, data) => {
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if (error) {
throw error
}
const { ranges } = data
expect(ranges.changes.length).to.equal(1)
done()
}
)
})
})
})
})