overleaf/services/clsi/test/acceptance/js/ExampleDocumentTests.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:
* DS101: Remove unnecessary use of Array.from
* DS102: Remove unnecessary code created because of implicit returns
* DS103: Rewrite code to no longer use __guard__
* DS207: Consider shorter variations of null checks
* Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
*/
const Client = require('./helpers/Client')
const fetch = require('node-fetch')
const { pipeline } = require('stream')
const fs = require('fs')
const ChildProcess = require('child_process')
const ClsiApp = require('./helpers/ClsiApp')
const logger = require('@overleaf/logger')
const Path = require('path')
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const fixturePath = path => {
if (path.slice(0, 3) === 'tmp') {
return '/tmp/clsi_acceptance_tests' + path.slice(3)
}
return Path.join(__dirname, '../fixtures/', path)
}
const process = require('process')
console.log(
process.pid,
process.ppid,
process.getuid(),
process.getgroups(),
'PID'
)
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const MOCHA_LATEX_TIMEOUT = 60 * 1000
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const convertToPng = function (pdfPath, pngPath, callback) {
if (callback == null) {
callback = function () {}
}
const command = `convert ${fixturePath(pdfPath)} ${fixturePath(pngPath)}`
console.log('COMMAND')
console.log(command)
const convert = ChildProcess.exec(command)
const stdout = ''
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convert.stdout.on('data', chunk => console.log('STDOUT', chunk.toString()))
convert.stderr.on('data', chunk => console.log('STDERR', chunk.toString()))
return convert.on('exit', () => callback())
}
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const compare = function (originalPath, generatedPath, callback) {
if (callback == null) {
callback = function () {}
}
const diffFile = `${fixturePath(generatedPath)}-diff.png`
const proc = ChildProcess.exec(
`compare -metric mae ${fixturePath(originalPath)} ${fixturePath(
generatedPath
)} ${diffFile}`
)
let stderr = ''
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proc.stderr.on('data', chunk => (stderr += chunk))
return proc.on('exit', () => {
if (stderr.trim() === '0 (0)') {
// remove output diff if test matches expected image
fs.unlink(diffFile, err => {
if (err) {
throw err
}
})
return callback(null, true)
} else {
console.log('compare result', stderr)
return callback(null, false)
}
})
}
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const checkPdfInfo = function (pdfPath, callback) {
if (callback == null) {
callback = function () {}
}
const proc = ChildProcess.exec(`pdfinfo ${fixturePath(pdfPath)}`)
let stdout = ''
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proc.stdout.on('data', chunk => (stdout += chunk))
proc.stderr.on('data', chunk => console.log('STDERR', chunk.toString()))
return proc.on('exit', () => {
if (stdout.match(/Optimized:\s+yes/)) {
return callback(null, true)
} else {
return callback(null, false)
}
})
}
const compareMultiplePages = function (projectId, callback) {
if (callback == null) {
callback = function () {}
}
function compareNext(pageNo, callback) {
const path = `tmp/${projectId}-source-${pageNo}.png`
return fs.stat(fixturePath(path), (error, stat) => {
if (error != null) {
return callback()
} else {
return compare(
`tmp/${projectId}-source-${pageNo}.png`,
`tmp/${projectId}-generated-${pageNo}.png`,
(error, same) => {
if (error != null) {
throw error
}
same.should.equal(true)
return compareNext(pageNo + 1, callback)
}
)
}
})
}
return compareNext(0, callback)
}
const comparePdf = function (projectId, exampleDir, callback) {
if (callback == null) {
callback = function () {}
}
console.log('CONVERT')
console.log(`tmp/${projectId}.pdf`, `tmp/${projectId}-generated.png`)
return convertToPng(
`tmp/${projectId}.pdf`,
`tmp/${projectId}-generated.png`,
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error => {
if (error != null) {
throw error
}
return convertToPng(
`examples/${exampleDir}/output.pdf`,
`tmp/${projectId}-source.png`,
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error => {
if (error != null) {
throw error
}
return fs.stat(
fixturePath(`tmp/${projectId}-source-0.png`),
(error, stat) => {
if (error != null) {
return compare(
`tmp/${projectId}-source.png`,
`tmp/${projectId}-generated.png`,
(error, same) => {
if (error != null) {
throw error
}
same.should.equal(true)
return callback()
}
)
} else {
return compareMultiplePages(projectId, error => {
if (error != null) {
throw error
}
return callback()
})
}
}
)
}
)
}
)
}
const downloadAndComparePdf = function (projectId, exampleDir, url, callback) {
fetch(url)
.then(res => {
if (!res.ok) {
return callback(new Error('non success response: ' + res.statusText))
}
const dest = fs.createWriteStream(fixturePath(`tmp/${projectId}.pdf`))
pipeline(res.body, dest, err => {
if (err) return callback(err)
checkPdfInfo(`tmp/${projectId}.pdf`, (err, optimised) => {
if (err) return callback(err)
optimised.should.equal(true)
comparePdf(projectId, exampleDir, callback)
})
})
})
.catch(callback)
}
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describe('Example Documents', function () {
Client.runFakeFilestoreService(fixturePath('examples'))
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before(function (done) {
ClsiApp.ensureRunning(done)
})
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before(function (done) {
fs.rm(fixturePath('tmp'), { force: true, recursive: true }, done)
})
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before(function (done) {
fs.mkdir(fixturePath('tmp'), done)
})
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after(function (done) {
fs.rm(fixturePath('tmp'), { force: true, recursive: true }, done)
})
return Array.from(fs.readdirSync(fixturePath('examples'))).map(exampleDir =>
(exampleDir =>
describe(exampleDir, function () {
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before(function () {
return (this.project_id = Client.randomId() + '_' + exampleDir)
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})
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it('should generate the correct pdf', function (done) {
this.timeout(MOCHA_LATEX_TIMEOUT)
return Client.compileDirectory(
this.project_id,
fixturePath('examples'),
exampleDir,
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(error, res, body) => {
if (
error ||
__guard__(
body != null ? body.compile : undefined,
x => x.status
) === 'failure'
) {
console.log('DEBUG: error', error, 'body', JSON.stringify(body))
return done(new Error('Compile failed'))
}
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const pdf = Client.getOutputFile(body, 'pdf')
return downloadAndComparePdf(
this.project_id,
exampleDir,
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pdf.url,
done
)
}
)
})
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return it('should generate the correct pdf on the second run as well', function (done) {
this.timeout(MOCHA_LATEX_TIMEOUT)
return Client.compileDirectory(
this.project_id,
fixturePath('examples'),
exampleDir,
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(error, res, body) => {
if (
error ||
__guard__(
body != null ? body.compile : undefined,
x => x.status
) === 'failure'
) {
console.log('DEBUG: error', error, 'body', JSON.stringify(body))
return done(new Error('Compile failed'))
}
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const pdf = Client.getOutputFile(body, 'pdf')
return downloadAndComparePdf(
this.project_id,
exampleDir,
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pdf.url,
done
)
}
)
})
}))(exampleDir)
)
})
function __guard__(value, transform) {
return typeof value !== 'undefined' && value !== null
? transform(value)
: undefined
}