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core.ts
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core.ts
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import { existsSync, promises as fs } from 'node:fs'
import type { ViteDevServer } from 'vite'
import { mergeConfig } from 'vite'
import { basename, dirname, join, normalize, relative } from 'pathe'
import fg from 'fast-glob'
import mm from 'micromatch'
import c from 'picocolors'
import { normalizeRequestId } from 'vite-node/utils'
import { ViteNodeRunner } from 'vite-node/client'
import { SnapshotManager } from '@vitest/snapshot/manager'
import type { CancelReason, File } from '@vitest/runner'
import { ViteNodeServer } from 'vite-node/server'
import type { ArgumentsType, CoverageProvider, OnServerRestartHandler, Reporter, ResolvedConfig, UserConfig, UserWorkspaceConfig, VitestRunMode } from '../types'
import { hasFailed, noop, slash, toArray } from '../utils'
import { getCoverageProvider } from '../integrations/coverage'
import type { BrowserProvider } from '../types/browser'
import { CONFIG_NAMES, configFiles, workspacesFiles as workspaceFiles } from '../constants'
import { createPool } from './pool'
import type { ProcessPool, WorkspaceSpec } from './pool'
import { createBenchmarkReporters, createReporters } from './reporters/utils'
import { StateManager } from './state'
import { resolveConfig } from './config'
import { Logger } from './logger'
import { VitestCache } from './cache'
import { WorkspaceProject, initializeProject } from './workspace'
const WATCHER_DEBOUNCE = 100
export class Vitest {
config: ResolvedConfig = undefined!
configOverride: Partial<ResolvedConfig> = {}
server: ViteDevServer = undefined!
state: StateManager = undefined!
snapshot: SnapshotManager = undefined!
cache: VitestCache = undefined!
reporters: Reporter[] = undefined!
coverageProvider: CoverageProvider | null | undefined
browserProvider: BrowserProvider | undefined
logger: Logger
pool: ProcessPool | undefined
vitenode: ViteNodeServer = undefined!
invalidates: Set<string> = new Set()
changedTests: Set<string> = new Set()
filenamePattern?: string
runningPromise?: Promise<void>
closingPromise?: Promise<void>
isCancelling = false
isFirstRun = true
restartsCount = 0
runner: ViteNodeRunner = undefined!
private coreWorkspaceProject!: WorkspaceProject
public projects: WorkspaceProject[] = []
private projectsTestFiles = new Map<string, Set<WorkspaceProject>>()
constructor(
public readonly mode: VitestRunMode,
) {
this.logger = new Logger(this)
}
private _onRestartListeners: OnServerRestartHandler[] = []
private _onSetServer: OnServerRestartHandler[] = []
private _onCancelListeners: ((reason: CancelReason) => Promise<void> | void)[] = []
async setServer(options: UserConfig, server: ViteDevServer, cliOptions: UserConfig) {
this.unregisterWatcher?.()
clearTimeout(this._rerunTimer)
this.restartsCount += 1
this.pool?.close()
this.pool = undefined
this.coverageProvider = undefined
this.runningPromise = undefined
this.projectsTestFiles.clear()
const resolved = resolveConfig(this.mode, options, server.config)
this.server = server
this.config = resolved
this.state = new StateManager()
this.cache = new VitestCache()
this.snapshot = new SnapshotManager({ ...resolved.snapshotOptions })
if (this.config.watch && this.mode !== 'typecheck')
this.registerWatcher()
this.vitenode = new ViteNodeServer(server, this.config.server)
const node = this.vitenode
this.runner = new ViteNodeRunner({
root: server.config.root,
base: server.config.base,
fetchModule(id: string) {
return node.fetchModule(id)
},
resolveId(id: string, importer?: string) {
return node.resolveId(id, importer)
},
})
if (this.config.watch) {
// hijack server restart
const serverRestart = server.restart
server.restart = async (...args) => {
await Promise.all(this._onRestartListeners.map(fn => fn()))
return await serverRestart(...args)
}
// since we set `server.hmr: false`, Vite does not auto restart itself
server.watcher.on('change', async (file) => {
file = normalize(file)
const isConfig = file === server.config.configFile
if (isConfig) {
await Promise.all(this._onRestartListeners.map(fn => fn('config')))
await serverRestart()
}
})
}
this.reporters = resolved.mode === 'benchmark'
? await createBenchmarkReporters(toArray(resolved.benchmark?.reporters), this.runner)
: await createReporters(resolved.reporters, this.runner)
this.cache.results.setConfig(resolved.root, resolved.cache)
try {
await this.cache.results.readFromCache()
}
catch { }
await Promise.all(this._onSetServer.map(fn => fn()))
this.projects = await this.resolveWorkspace(cliOptions)
if (this.config.testNamePattern)
this.configOverride.testNamePattern = this.config.testNamePattern
}
private async createCoreProject() {
this.coreWorkspaceProject = await WorkspaceProject.createCoreProject(this)
return this.coreWorkspaceProject
}
public getCoreWorkspaceProject(): WorkspaceProject | null {
return this.coreWorkspaceProject || null
}
public getProjectByTaskId(taskId: string): WorkspaceProject {
const task = this.state.idMap.get(taskId)
const projectName = (task as File).projectName || task?.file?.projectName
return this.projects.find(p => p.getName() === projectName)
|| this.getCoreWorkspaceProject()
|| this.projects[0]
}
private async resolveWorkspace(cliOptions: UserConfig) {
const configDir = this.server.config.configFile
? dirname(this.server.config.configFile)
: this.config.root
const rootFiles = await fs.readdir(configDir)
const workspaceConfigName = workspaceFiles.find((configFile) => {
return rootFiles.includes(configFile)
})
if (!workspaceConfigName)
return [await this.createCoreProject()]
const workspaceConfigPath = join(configDir, workspaceConfigName)
const workspaceModule = await this.runner.executeFile(workspaceConfigPath) as {
default: (string | UserWorkspaceConfig)[]
}
if (!workspaceModule.default || !Array.isArray(workspaceModule.default))
throw new Error(`Workspace config file ${workspaceConfigPath} must export a default array of project paths.`)
const workspaceGlobMatches: string[] = []
const projectsOptions: UserWorkspaceConfig[] = []
for (const project of workspaceModule.default) {
if (typeof project === 'string')
workspaceGlobMatches.push(project.replace('<rootDir>', this.config.root))
else
projectsOptions.push(project)
}
const globOptions: fg.Options = {
absolute: true,
dot: true,
onlyFiles: false,
markDirectories: true,
cwd: this.config.root,
ignore: ['**/node_modules/**', '**/*.timestamp-*'],
}
const workspacesFs = await fg(workspaceGlobMatches, globOptions)
const resolvedWorkspacesPaths = await Promise.all(workspacesFs.filter((file) => {
if (file.endsWith('/')) {
// if it's a directory, check that we don't already have a workspace with a config inside
const hasWorkspaceWithConfig = workspacesFs.some((file2) => {
return file2 !== file && `${dirname(file2)}/` === file
})
return !hasWorkspaceWithConfig
}
const filename = basename(file)
return CONFIG_NAMES.some(configName => filename.startsWith(configName))
}).map(async (filepath) => {
if (filepath.endsWith('/')) {
const filesInside = await fs.readdir(filepath)
const configFile = configFiles.find(config => filesInside.includes(config))
return configFile ? join(filepath, configFile) : filepath
}
return filepath
}))
const workspacesByFolder = resolvedWorkspacesPaths
.reduce((configByFolder, filepath) => {
const dir = dirname(filepath)
configByFolder[dir] ??= []
configByFolder[dir].push(filepath)
return configByFolder
}, {} as Record<string, string[]>)
const filteredWorkspaces = Object.values(workspacesByFolder).map((configFiles) => {
if (configFiles.length === 1)
return configFiles[0]
const vitestConfig = configFiles.find(configFile => basename(configFile).startsWith('vitest.config'))
return vitestConfig || configFiles[0]
})
const overridesOptions = [
'logHeapUsage',
'allowOnly',
'sequence',
'testTimeout',
'threads',
'singleThread',
'isolate',
'globals',
'mode',
] as const
const cliOverrides = overridesOptions.reduce((acc, name) => {
if (name in cliOptions)
acc[name] = cliOptions[name] as any
return acc
}, {} as UserConfig)
const projects = filteredWorkspaces.map(async (workspacePath) => {
// don't start a new server, but reuse existing one
if (
this.server.config.configFile === workspacePath
)
return this.createCoreProject()
return initializeProject(workspacePath, this, { workspaceConfigPath, test: cliOverrides })
})
projectsOptions.forEach((options, index) => {
projects.push(initializeProject(index, this, mergeConfig(options, { workspaceConfigPath, test: cliOverrides }) as any))
})
if (!projects.length)
return [await this.createCoreProject()]
const resolvedProjects = await Promise.all(projects)
const names = new Set<string>()
for (const project of resolvedProjects) {
const name = project.getName()
if (names.has(name))
throw new Error(`Project name "${name}" is not unique. All projects in a workspace should have unique names.`)
names.add(name)
}
return resolvedProjects
}
private async initCoverageProvider() {
if (this.coverageProvider !== undefined)
return
this.coverageProvider = await getCoverageProvider(this.config.coverage, this.runner)
if (this.coverageProvider) {
await this.coverageProvider.initialize(this)
this.config.coverage = this.coverageProvider.resolveOptions()
}
return this.coverageProvider
}
private async initBrowserProviders() {
return Promise.all(this.projects.map(w => w.initBrowserProvider()))
}
typecheck(filters?: string[]) {
return Promise.all(this.projects.map(project => project.typecheck(filters)))
}
async start(filters?: string[]) {
if (this.mode === 'typecheck') {
await this.typecheck(filters)
return
}
try {
await this.initCoverageProvider()
await this.coverageProvider?.clean(this.config.coverage.clean)
await this.initBrowserProviders()
}
finally {
await this.report('onInit', this)
}
const files = await this.filterTestsBySource(
await this.globTestFiles(filters),
)
// if run with --changed, don't exit if no tests are found
if (!files.length) {
await this.reportCoverage(true)
this.logger.printNoTestFound(filters)
if (!this.config.watch || !(this.config.changed || this.config.related?.length)) {
const exitCode = this.config.passWithNoTests ? 0 : 1
process.exit(exitCode)
}
}
// all subsequent runs will treat this as a fresh run
this.config.changed = false
this.config.related = undefined
if (files.length) {
// populate once, update cache on watch
await this.cache.stats.populateStats(this.config.root, files)
await this.runFiles(files)
}
await this.reportCoverage(true)
if (this.config.watch)
await this.report('onWatcherStart')
}
private async getTestDependencies(filepath: WorkspaceSpec, deps = new Set<string>()) {
const addImports = async ([project, filepath]: WorkspaceSpec) => {
if (deps.has(filepath))
return
const mod = project.server.moduleGraph.getModuleById(filepath)
const transformed = mod?.ssrTransformResult || await project.vitenode.transformRequest(filepath)
if (!transformed)
return
const dependencies = [...transformed.deps || [], ...transformed.dynamicDeps || []]
await Promise.all(dependencies.map(async (dep) => {
const path = await this.server.pluginContainer.resolveId(dep, filepath, { ssr: true })
const fsPath = path && !path.external && path.id.split('?')[0]
if (fsPath && !fsPath.includes('node_modules') && !deps.has(fsPath) && existsSync(fsPath)) {
deps.add(fsPath)
await addImports([project, fsPath])
}
}))
}
await addImports(filepath)
return deps
}
async filterTestsBySource(specs: WorkspaceSpec[]) {
if (this.config.changed && !this.config.related) {
const { VitestGit } = await import('./git')
const vitestGit = new VitestGit(this.config.root)
const related = await vitestGit.findChangedFiles({
changedSince: this.config.changed,
})
if (!related) {
this.logger.error(c.red('Could not find Git root. Have you initialized git with `git init`?\n'))
process.exit(1)
}
this.config.related = Array.from(new Set(related))
}
const related = this.config.related
if (!related)
return specs
const forceRerunTriggers = this.config.forceRerunTriggers
if (forceRerunTriggers.length && mm(related, forceRerunTriggers).length)
return specs
// don't run anything if no related sources are found
// if we are in watch mode, we want to process all tests
if (!this.config.watch && !related.length)
return []
const testGraphs = await Promise.all(
specs.map(async (spec) => {
const deps = await this.getTestDependencies(spec)
return [spec, deps] as const
}),
)
const runningTests = []
for (const [filepath, deps] of testGraphs) {
// if deps or the test itself were changed
if (related.some(path => path === filepath[1] || deps.has(path)))
runningTests.push(filepath)
}
return runningTests
}
getProjectsByTestFile(file: string) {
const projects = this.projectsTestFiles.get(file)
if (!projects)
return []
return Array.from(projects).map(project => [project, file] as WorkspaceSpec)
}
async runFiles(paths: WorkspaceSpec[]) {
const filepaths = paths.map(([, file]) => file)
this.state.collectPaths(filepaths)
await this.report('onPathsCollected', filepaths)
// previous run
await this.runningPromise
this._onCancelListeners = []
this.isCancelling = false
// schedule the new run
this.runningPromise = (async () => {
if (!this.pool)
this.pool = createPool(this)
const invalidates = Array.from(this.invalidates)
this.invalidates.clear()
this.snapshot.clear()
this.state.clearErrors()
try {
await this.pool.runTests(paths, invalidates)
}
catch (err) {
this.state.catchError(err, 'Unhandled Error')
}
const files = this.state.getFiles()
if (hasFailed(files))
process.exitCode = 1
this.cache.results.updateResults(files)
await this.cache.results.writeToCache()
})()
.finally(async () => {
// can be duplicate files if different projects are using the same file
const specs = Array.from(new Set(paths.map(([, p]) => p)))
await this.report('onFinished', this.state.getFiles(specs), this.state.getUnhandledErrors())
this.runningPromise = undefined
})
return await this.runningPromise
}
async cancelCurrentRun(reason: CancelReason) {
this.isCancelling = true
await Promise.all(this._onCancelListeners.splice(0).map(listener => listener(reason)))
}
async rerunFiles(files: string[] = this.state.getFilepaths(), trigger?: string) {
if (this.filenamePattern) {
const filteredFiles = await this.globTestFiles([this.filenamePattern])
files = files.filter(file => filteredFiles.some(f => f[1] === file))
}
if (this.coverageProvider && this.config.coverage.cleanOnRerun)
await this.coverageProvider.clean()
await this.report('onWatcherRerun', files, trigger)
await this.runFiles(files.flatMap(file => this.getProjectsByTestFile(file)))
await this.reportCoverage(!trigger)
await this.report('onWatcherStart', this.state.getFiles(files))
}
async changeNamePattern(pattern: string, files: string[] = this.state.getFilepaths(), trigger?: string) {
// Empty test name pattern should reset filename pattern as well
if (pattern === '')
this.filenamePattern = undefined
this.configOverride.testNamePattern = pattern ? new RegExp(pattern) : undefined
await this.rerunFiles(files, trigger)
}
async changeFilenamePattern(pattern: string) {
this.filenamePattern = pattern
const files = this.state.getFilepaths()
const trigger = this.filenamePattern ? 'change filename pattern' : 'reset filename pattern'
await this.rerunFiles(files, trigger)
}
async rerunFailed() {
await this.rerunFiles(this.state.getFailedFilepaths(), 'rerun failed')
}
async updateSnapshot(files?: string[]) {
// default to failed files
files = files || [
...this.state.getFailedFilepaths(),
...this.snapshot.summary.uncheckedKeysByFile.map(s => s.filePath),
]
this.configOverride.snapshotOptions = {
updateSnapshot: 'all',
// environment is resolved inside a worker thread
snapshotEnvironment: null as any,
}
try {
await this.rerunFiles(files, 'update snapshot')
}
finally {
delete this.configOverride.snapshotOptions
}
}
private _rerunTimer: any
private async scheduleRerun(triggerId: string[]) {
const currentCount = this.restartsCount
clearTimeout(this._rerunTimer)
await this.runningPromise
clearTimeout(this._rerunTimer)
// server restarted
if (this.restartsCount !== currentCount)
return
this._rerunTimer = setTimeout(async () => {
if (this.changedTests.size === 0) {
this.invalidates.clear()
return
}
// server restarted
if (this.restartsCount !== currentCount)
return
this.isFirstRun = false
this.snapshot.clear()
let files = Array.from(this.changedTests)
if (this.filenamePattern) {
const filteredFiles = await this.globTestFiles([this.filenamePattern])
files = files.filter(file => filteredFiles.some(f => f[1] === file))
// A file that does not match the current filename pattern was changed
if (files.length === 0)
return
}
this.changedTests.clear()
if (this.coverageProvider && this.config.coverage.cleanOnRerun)
await this.coverageProvider.clean()
const triggerIds = new Set(triggerId.map(id => relative(this.config.root, id)))
const triggerLabel = Array.from(triggerIds).join(', ')
await this.report('onWatcherRerun', files, triggerLabel)
await this.runFiles(files.flatMap(file => this.getProjectsByTestFile(file)))
await this.reportCoverage(false)
await this.report('onWatcherStart', this.state.getFiles(files))
}, WATCHER_DEBOUNCE)
}
public getModuleProjects(id: string) {
return this.projects.filter((project) => {
return project.getModulesByFilepath(id).size
// TODO: reevaluate || project.browser?.moduleGraph.getModulesByFile(id)?.size
})
}
private unregisterWatcher = noop
private registerWatcher() {
const updateLastChanged = (id: string) => {
const projects = this.getModuleProjects(id)
projects.forEach(({ server, browser }) => {
const serverMods = server.moduleGraph.getModulesByFile(id)
serverMods?.forEach(mod => server.moduleGraph.invalidateModule(mod))
if (browser) {
const browserMods = browser.moduleGraph.getModulesByFile(id)
browserMods?.forEach(mod => browser.moduleGraph.invalidateModule(mod))
}
})
}
const onChange = (id: string) => {
id = slash(id)
updateLastChanged(id)
const needsRerun = this.handleFileChanged(id)
if (needsRerun.length)
this.scheduleRerun(needsRerun)
}
const onUnlink = (id: string) => {
id = slash(id)
this.invalidates.add(id)
if (this.state.filesMap.has(id)) {
this.state.filesMap.delete(id)
this.cache.results.removeFromCache(id)
this.cache.stats.removeStats(id)
this.changedTests.delete(id)
this.report('onTestRemoved', id)
}
}
const onAdd = async (id: string) => {
id = slash(id)
updateLastChanged(id)
const matchingProjects: WorkspaceProject[] = []
await Promise.all(this.projects.map(async (project) => {
if (await project.isTargetFile(id))
matchingProjects.push(project)
}))
if (matchingProjects.length > 0) {
this.projectsTestFiles.set(id, new Set(matchingProjects))
this.changedTests.add(id)
this.scheduleRerun([id])
}
}
const watcher = this.server.watcher
if (this.config.forceRerunTriggers.length)
watcher.add(this.config.forceRerunTriggers)
watcher.unwatch(this.config.watchExclude)
watcher.on('change', onChange)
watcher.on('unlink', onUnlink)
watcher.on('add', onAdd)
this.unregisterWatcher = () => {
watcher.off('change', onChange)
watcher.off('unlink', onUnlink)
watcher.off('add', onAdd)
this.unregisterWatcher = noop
}
}
/**
* @returns A value indicating whether rerun is needed (changedTests was mutated)
*/
private handleFileChanged(id: string): string[] {
if (this.changedTests.has(id) || this.invalidates.has(id))
return []
if (mm.isMatch(id, this.config.forceRerunTriggers)) {
this.state.getFilepaths().forEach(file => this.changedTests.add(file))
return [id]
}
const projects = this.getModuleProjects(id)
if (!projects.length)
return []
const files: string[] = []
for (const project of projects) {
const { server } = project
const mods = project.getModulesByFilepath(id)
if (!mods.size)
continue
// remove queries from id
id = normalizeRequestId(id, server.config.base)
this.invalidates.add(id)
// one of test files that we already run, or one of test files that we can run
if (this.state.filesMap.has(id) || project.isTestFile(id)) {
this.changedTests.add(id)
files.push(id)
continue
}
let rerun = false
for (const mod of mods) {
if (!mod.id)
continue
mod.importers.forEach((i) => {
if (!i.id)
return
const heedsRerun = this.handleFileChanged(i.id)
if (heedsRerun)
rerun = true
})
}
if (rerun)
files.push(id)
}
return files
}
private async reportCoverage(allTestsRun: boolean) {
if (!this.config.coverage.reportOnFailure && this.state.getCountOfFailedTests() > 0)
return
if (this.coverageProvider)
await this.coverageProvider.reportCoverage({ allTestsRun })
}
async close() {
if (!this.closingPromise) {
const closePromises = this.projects.map(w => w.close().then(() => w.server = undefined as any))
// close the core workspace server only once
// it's possible that it's not initialized at all because it's not running any tests
if (!this.coreWorkspaceProject || !this.projects.includes(this.coreWorkspaceProject))
closePromises.push(this.server.close().then(() => this.server = undefined as any))
if (this.pool)
closePromises.push(this.pool.close().then(() => this.pool = undefined))
this.closingPromise = Promise.allSettled(closePromises).then((results) => {
results.filter(r => r.status === 'rejected').forEach((err) => {
this.logger.error('error during close', (err as PromiseRejectedResult).reason)
})
})
}
return this.closingPromise
}
/**
* Close the thread pool and exit the process
*/
async exit(force = false) {
setTimeout(() => {
this.report('onProcessTimeout').then(() => {
console.warn(`close timed out after ${this.config.teardownTimeout}ms`)
this.state.getProcessTimeoutCauses().forEach(cause => console.warn(cause))
if (!this.pool) {
const runningServers = [this.server, ...this.projects.map(p => p.server)].filter(Boolean).length
if (runningServers === 1)
console.warn('Tests closed successfully but something prevents Vite server from exiting')
else if (runningServers > 1)
console.warn(`Tests closed successfully but something prevents ${runningServers} Vite servers from exiting`)
else
console.warn('Tests closed successfully but something prevents the main process from exiting')
console.warn('You can try to identify the cause by enabling "hanging-process" reporter. See https://vitest.dev/config/#reporters')
}
process.exit()
})
}, this.config.teardownTimeout).unref()
await this.close()
if (force)
process.exit()
}
async report<T extends keyof Reporter>(name: T, ...args: ArgumentsType<Reporter[T]>) {
await Promise.all(this.reporters.map(r => r[name]?.(
// @ts-expect-error let me go
...args,
)))
}
public async globTestFiles(filters: string[] = []) {
const files: WorkspaceSpec[] = []
await Promise.all(this.projects.map(async (project) => {
const specs = await project.globTestFiles(filters)
specs.forEach((file) => {
files.push([project, file])
const projects = this.projectsTestFiles.get(file) || new Set()
projects.add(project)
this.projectsTestFiles.set(file, projects)
})
}))
return files
}
// The server needs to be running for communication
shouldKeepServer() {
return !!this.config?.watch
}
onServerRestart(fn: OnServerRestartHandler) {
this._onRestartListeners.push(fn)
}
onAfterSetServer(fn: OnServerRestartHandler) {
this._onSetServer.push(fn)
}
onCancel(fn: (reason: CancelReason) => void) {
this._onCancelListeners.push(fn)
}
}