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run-tests.js
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const path = require('path')
const _glob = require('glob')
const fs = require('fs').promises
const fetch = require('node-fetch')
const { promisify } = require('util')
const { Sema } = require('async-sema')
const { spawn, exec: execOrig } = require('child_process')
const glob = promisify(_glob)
const exec = promisify(execOrig)
const timings = []
const NUM_RETRIES = 2
const DEFAULT_CONCURRENCY = 2
const RESULTS_EXT = `.results.json`
const isTestJob = !!process.env.NEXT_TEST_JOB
const TIMINGS_API = `https://next-timings.jjsweb.site/api/timings`
const UNIT_TEST_EXT = '.unit.test.js'
const DEV_TEST_EXT = '.dev.test.js'
const PROD_TEST_EXT = '.prod.test.js'
// which types we have configured to run separate
const configuredTestTypes = [UNIT_TEST_EXT]
;(async () => {
let concurrencyIdx = process.argv.indexOf('-c')
const concurrency =
parseInt(process.argv[concurrencyIdx + 1], 10) || DEFAULT_CONCURRENCY
const outputTimings = process.argv.indexOf('--timings') !== -1
const writeTimings = process.argv.indexOf('--write-timings') !== -1
const isAzure = process.argv.indexOf('--azure') !== -1
const groupIdx = process.argv.indexOf('-g')
const groupArg = groupIdx !== -1 && process.argv[groupIdx + 1]
const testTypeIdx = process.argv.indexOf('--type')
const testType = process.argv[testTypeIdx + 1]
let filterTestsBy
switch (testType) {
case 'unit':
filterTestsBy = UNIT_TEST_EXT
break
case 'dev':
filterTestsBy = DEV_TEST_EXT
break
case 'production':
filterTestsBy = PROD_TEST_EXT
break
case 'all':
filterTestsBy = 'none'
break
default:
break
}
console.log('Running tests with concurrency:', concurrency)
let tests = process.argv.filter((arg) => arg.endsWith('.test.js'))
let prevTimings
if (tests.length === 0) {
tests = (
await glob('**/*.test.js', {
nodir: true,
cwd: path.join(__dirname, 'test'),
})
).filter((test) => {
// only include the specified type
if (filterTestsBy) {
return filterTestsBy === 'none' ? true : test.endsWith(filterTestsBy)
// include all except the separately configured types
} else {
return !configuredTestTypes.some((type) => test.endsWith(type))
}
})
if (outputTimings && groupArg) {
console.log('Fetching previous timings data')
try {
const timingsFile = path.join(__dirname, 'test-timings.json')
try {
prevTimings = JSON.parse(await fs.readFile(timingsFile, 'utf8'))
console.log('Loaded test timings from disk successfully')
} catch (_) {}
if (!prevTimings) {
const timingsRes = await fetch(
`${TIMINGS_API}?which=${isAzure ? 'azure' : 'actions'}`
)
if (!timingsRes.ok) {
throw new E
10000
rror(`request status: ${timingsRes.status}`)
}
prevTimings = await timingsRes.json()
console.log('Fetched previous timings data successfully')
if (writeTimings) {
await fs.writeFile(timingsFile, JSON.stringify(prevTimings))
console.log('Wrote previous timings data to', timingsFile)
process.exit(0)
}
}
} catch (err) {
console.log(`Failed to fetch timings data`, err)
}
}
}
let testNames = [
...new Set(
tests.map((f) => {
let name = `${f.replace(/\\/g, '/').replace(/\/test$/, '')}`
if (!name.startsWith('test/')) name = `test/${name}`
return name
})
),
]
if (groupArg) {
const groupParts = groupArg.split('/')
const groupPos = parseInt(groupParts[0], 10)
const groupTotal = parseInt(groupParts[1], 10)
const numPerGroup = Math.ceil(testNames.length / groupTotal)
let offset = groupPos === 1 ? 0 : (groupPos - 1) * numPerGroup - 1
// if there's an odd number of suites give the first group the extra
if (testNames.length % 2 !== 0 && groupPos !== 1) offset++
if (prevTimings) {
const groups = [[]]
const groupTimes = [0]
for (const testName of testNames) {
let smallestGroup = groupTimes[0]
let smallestGroupIdx = 0
// get the smallest group time to add current one to
for (let i = 1; i < groupTotal; i++) {
if (!groups[i]) {
groups[i] = []
groupTimes[i] = 0
}
const time = groupTimes[i]
if (time < smallestGroup) {
smallestGroup = time
smallestGroupIdx = i
}
}
groups[smallestGroupIdx].push(testName)
groupTimes[smallestGroupIdx] += prevTimings[testName] || 1
}
const curGroupIdx = groupPos - 1
testNames = groups[curGroupIdx]
console.log(
'Current group previous accumulated times:',
Math.round(groupTimes[curGroupIdx]) + 's'
)
} else {
testNames = testNames.splice(offset, numPerGroup)
}
}
console.log('Running tests:', '\n', ...testNames.map((name) => `${name}\n`))
const sema = new Sema(concurrency, { capacity: testNames.length })
const jestPath = path.join(
path.dirname(require.resolve('jest-cli/package')),
'bin/jest.js'
)
const children = new Set()
const runTest = (test = '', usePolling) =>
new Promise((resolve, reject) => {
const start = new Date().getTime()
const child = spawn(
'node',
[
jestPath,
'--runInBand',
'--forceExit',
'--verbose',
...(isTestJob
? ['--json', `--outputFile=${test}${RESULTS_EXT}`]
: []),
test,
],
{
stdio: 'inherit',
env: {
JEST_RETRY_TIMES: 0,
...process.env,
...(isAzure
? {
HEADLESS: 'true',
__POST_PROCESS_MIDDLEWARE_TIME_BUDGET: '50',
}
: {}),
...(usePolling
? {
// Events can be finicky in CI. This switches to a more
// reliable polling method.
CHOKIDAR_USEPOLLING: 'true',
CHOKIDAR_INTERVAL: 500,
}
: {}),
},
}
)
children.add(child)
child.on('exit', (code) => {
children.delete(child)
if (code) reject(new Error(`failed with code: ${code}`))
resolve(new Date().getTime() - start)
})
})
await Promise.all(
testNames.map(async (test) => {
await sema.acquire()
let passed = false
for (let i = 0; i < NUM_RETRIES + 1; i++) {
try {
const time = await runTest(test, i > 0)
timings.push({
file: test,
time,
})
passed = true
break
} catch (err) {
if (i < NUM_RETRIES) {
try {
const testDir = path.dirname(path.join(__dirname, test))
console.log('Cleaning test files at', testDir)
await exec(`git clean -fdx "${testDir}"`)
await exec(`git checkout "${testDir}"`)
} catch (err) {}
}
}
}
if (!passed) {
console.error(`${test} failed to pass within ${NUM_RETRIES} retries`)
children.forEach((child) => child.kill())
if (isTestJob) {
try {
const testsOutput = await fs.readFile(
`${test}${RESULTS_EXT}`,
'utf8'
)
console.log(
`--test output start--`,
testsOutput,
`--test output end--`
)
} catch (err) {
console.log(`Failed to load test output`, err)
}
}
process.exit(1)
}
sema.release()
})
)
if (outputTimings) {
const curTimings = {}
// let junitData = `<testsuites name="jest tests">`
/*
<testsuite name="/__tests__/bar.test.js" tests="1" errors="0" failures="0" skipped="0" timestamp="2017-10-10T21:56:49" time="0.323">
<testcase classname="bar-should be bar" name="bar-should be bar" time="0.004">
</testcase>
</testsuite>
*/
for (const timing of timings) {
const timeInSeconds = timing.time / 1000
curTimings[timing.file] = timeInSeconds
// junitData += `
// <testsuite name="${timing.file}" file="${
// timing.file
// }" tests="1" errors="0" failures="0" skipped="0" timestamp="${new Date().toJSON()}" time="${timeInSeconds}">
// <testcase classname="tests suite should pass" name="${
// timing.file
// }" time="${timeInSeconds}"></testcase>
// </testsuite>
// `
}
// junitData += `</testsuites>`
// console.log('output timing data to junit.xml')
if (prevTimings) {
try {
const timingsRes = await fetch(TIMINGS_API, {
method: 'POST',
headers: {
'content-type': 'application/json',
},
body: JSON.stringify({
timings: curTimings,
which: isAzure ? 'azure' : 'actions',
}),
})
if (!timingsRes.ok) {
throw new Error(`request status: ${timingsRes.status}`)
}
console.log(
'Sent updated timings successfully',
await timingsRes.json()
)
} catch (err) {
console.log('Failed to update timings data', err)
}
}
}
})()