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import path from 'path'
import fs from 'fs-extra'
import { NextInstance } from './base'
import spawn from 'cross-spawn'
import { Span } from 'next/dist/trace'
import stripAnsi from 'strip-ansi'
export class NextStartInstance extends NextInstance {
private _buildId: string
private _cliOutput: string = ''
private spawnOpts: import('child_process').SpawnOptions
public get buildId() {
return this._buildId
}
public get cliOutput() {
return this._cliOutput
}
public async setup(parentSpan: Span) {
super.setup(parentSpan)
await super.createTestDir({ parentSpan })
}
private handleStdio = (childProcess) => {
childProcess.stdout.on('data', (chunk) => {
const msg = chunk.toString()
process.stdout.write(chunk)
this._cliOutput += msg
this.emit('stdout', [msg])
})
childProcess.stderr.on('data', (chunk) => {
const msg = chunk.toString()
process.stderr.write(chunk)
this._cliOutput += msg
this.emit('stderr', [msg])
})
}
public async start(options: { skipBuild?: boolean } = {}) {
if (this.childProcess) {
throw new Error('next already started')
}
this._cliOutput = ''
this.spawnOpts = {
cwd: this.testDir,
stdio: ['ignore', 'pipe', 'pipe'],
shell: false,
env: {
...process.env,
...this.env,
NODE_ENV: this.env.NODE_ENV || ('' as any),
...(this.forcedPort
? {
PORT: this.forcedPort,
}
: {
PORT: '0',
}),
__NEXT_TEST_MODE: 'e2e',
},
}
let buildArgs = ['pnpm', 'next', 'build']
let startArgs = ['pnpm', 'next', 'start']
if (this.buildCommand) {
buildArgs = this.buildCommand.split(' ')
}
if (this.buildArgs) {
buildArgs.push(...this.buildArgs)
}
if (this.startCommand) {
startArgs = this.startCommand.split(' ')
}
if (this.startArgs) {
startArgs.push(...this.startArgs)
}
if (process.env.NEXT_SKIP_ISOLATE) {
// without isolation yarn can't be used and pnpm must be used instead
if (buildArgs[0] === 'yarn') {
buildArgs[0] = 'pnpm'
}
if (startArgs[0] === 'yarn') {
startArgs[0] = 'pnpm'
}
}
if (!options.skipBuild) {
console.log('running', buildArgs.join(' '))
await new Promise<void>((resolve, reject) => {
try {
this.childProcess = spawn(
buildArgs[0],
buildArgs.slice(1),
this.spawnOpts
)
this.handleStdio(this.childProcess)
this.childProcess.on('exit', (code, signal) => {
this.childProcess = undefined
if (code || signal)
reject(
new Error(
`next build failed with code/signal ${code || signal}`
)
)
else resolve()
})
} catch (err) {
require('console').error(`Failed to run ${buildArgs.join(' ')}`, err)
setTimeout(() => process.exit(1), 0)
}
})
this._buildId = (
await fs
.readFile(
path.join(
this.testDir,
this.nextConfig?.distDir || '.next',
'BUILD_ID'
),
'utf8'
)
.catch(() => '')
).trim()
}
console.log('running', startArgs.join(' '))
await new Promise<void>((resolve, reject) => {
try {
this.childProcess = spawn(
startArgs[0],
startArgs.slice(1),
this.spawnOpts
)
this.handleStdio(this.childProcess)
this.childProcess.on('close', (code, signal) => {
if (this.isStopping) return
if (code || signal) {
require('console').error(
`next start exited unexpectedly with code/signal ${
code || signal
}`
)
}
})
const serverReadyTimeoutId = this.setServerReadyTimeout(
reject,
this.startServerTimeout
)
const readyCb = (msg) => {
const colorStrippedMsg = stripAnsi(msg)
if (colorStrippedMsg.includes('- Local:')) {
this._url = msg
.split('\n')
.find((line) => line.includes('- Local:'))
.split(/\s*- Local:/)
.pop()
.trim()
this._parsedUrl = new URL(this._url)
}
if (this.serverReadyPattern!.test(colorStrippedMsg)) {
clearTimeout(serverReadyTimeoutId)
resolve()
this.off('stdout', readyCb)
}
}
this.on('stdout', readyCb)
} catch (err) {
require('console').error(`Failed to run ${startArgs.join(' ')}`, err)
setTimeout(() => process.exit(1), 0)
}
})
}
public async build(
options: { env?: Record<string, string>; args?: string[] } = {}
) {
this.spawnOpts = {
cwd: this.testDir,
stdio: ['ignore', 'pipe', 'pipe'],
shell: false,
env: {
...process.env,
...this.env,
...options.env,
NODE_ENV: '' as any,
PORT: this.forcedPort || '0',
__NEXT_TEST_MODE: 'e2e',
},
}
return new Promise<{
exitCode: NodeJS.Signals | number | null
cliOutput: string
}>((resolve) => {
const curOutput = this._cliOutput.length
const buildArgs = ['pnpm', 'next', 'build']
if (this.buildArgs) {
buildArgs.push(...this.buildArgs)
}
if (options.args) {
buildArgs.push(...options.args)
}
if (this.childProcess) {
throw new Error(
`can not run export while server is running, use next.stop() first`
)
}
console.log('running', buildArgs.join(' '))
this.childProcess = spawn(
buildArgs[0],
buildArgs.slice(1),
this.spawnOpts
)
this.handleStdio(this.childProcess)
this.childProcess.on('exit', (code, signal) => {
this.childProcess = undefined
resolve({
exitCode: signal || code,
cliOutput: this.cliOutput.slice(curOutput),
})
})
})
}
}
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