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utils.ts
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/
utils.ts
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import * as path from 'path'
import type { Config } from '@jest/types'
import { ExecaReturnValue, sync as spawnSync, SyncOptions } from 'execa'
import * as fs from 'graceful-fs'
import { version } from '../package.json'
export const tsJestBundle = path.join(__dirname, '..', `ts-jest-${version}.tgz`)
interface RunResult extends ExecaReturnValue {
status: number
error: Error
}
export const run = (cmd: string, cwd?: Config.Path, env?: Record<string, string>): RunResult => {
const args = cmd.split(/\s/).slice(1)
const spawnOptions = { cwd, env, preferLocal: false, reject: false }
const result = spawnSync(cmd.split(/\s/)[0], args, spawnOptions as SyncOptions) as RunResult
// For compat with cross-spawn
result.status = result.exitCode
if (result.status !== 0) {
const message = `
ORIGINAL CMD: ${cmd}
STDOUT: ${result.stdout}
STDERR: ${result.stderr}
STATUS: ${result.status}
ERROR: ${result.error}
`
throw new Error(message)
}
return result
}
export const runNpmInstall = (cwd: Config.Path, env?: Record<string, string>): RunResult => {
const lockfilePath = path.resolve(cwd, 'package-lock.json')
let exists = true
// If the lockfile doesn't exist, npm's project detection is confused. Just creating an empty file works
if (!fs.existsSync(lockfilePath)) {
exists = false
fs.writeFileSync(lockfilePath, '')
}
return run(exists ? 'npm ci --no-optional' : 'npm i --no-optional', cwd, env)
}
const replaceTime = (str: string): string =>
str.replace(/\d*\.?\d+ m?s\b/g, '<<REPLACED>>').replace(/, estimated <<REPLACED>>/g, '')
const removeFnNameNode10 = (str: string): string => str.replace('<anonymous>.test', '<anonymous>')
export const extractSummary = (stdout: string): { rest: string; summary: string } => {
const match = stdout
.replace(/(?:\\[rn])+/g, '\n')
.match(/Test Suites:.*\nTests.*\nSnapshots.*\nTime.*(\nRan all test suites)*.*\n*$/gm)
if (!match) {
throw new Error(
`
Could not find test summary in the output.
OUTPUT:
${stdout}
`,
)
}
const summary = replaceTime(match[0])
const rest = stdout
.replace(match[0], '')
// remove all timestamps
.replace(/\s*\(\d*\.?\d+ m?s\b\)$/gm, '')
return {
rest: removeFnNameNode10(rest.trim()),
summary: summary.trim(),
}
}
const sortTests = (stdout: string) =>
removeFnNameNode10(
stdout
.split('\n')
.reduce<string[][]>((tests, line) => {
if (['RUNS', 'PASS', 'FAIL'].includes(line.slice(0, 4))) {
tests.push([line])
} else {
tests[tests.length - 1].push(line)
}
return tests
}, [])
.sort(([a], [b]) => (a > b ? 1 : -1))
.map((strings) => (strings.length > 1 ? `${strings.join('\n').trimRight()}\n` : strings[0]))
.join('\n')
.trim(),
)
export const extractSortedSummary = (stdout: string): { rest: string; summary: string } => {
const { rest, summary } = extractSummary(stdout)
return {
rest: sortTests(replaceTime(rest)),
summary,
}
}
export const extractSummaries = (stdout: string): Array<{ rest: string; summary: string }> => {
const regex = /Test Suites:.*\nTests.*\nSnapshots.*\nTime.*(\nRan all test suites)*.*\n*$/gm
let match = regex.exec(stdout)
const matches: RegExpExecArray[] = []
while (match) {
matches.push(match)
match = regex.exec(stdout)
}
return matches
.map((currentMatch, i) => {
const prevMatch = matches[i - 1]
const start = prevMatch ? prevMatch.index + prevMatch[0].length : 0
const end = currentMatch.index + currentMatch[0].length
return { end, start }
})
.map(({ start, end }) => extractSortedSummary(stdout.slice(start, end)))
}
export const normalizeIcons = (str: string): string => {
if (!str) {
return str
}
// Make sure to keep in sync with `jest-cli/src/constants`
return str.replace(new RegExp('\u00D7', 'g'), '\u2715').replace(new RegExp('\u221A', 'g'), '\u2713')
}