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runner.ts
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runner.ts
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import type { File, Task, TaskResultPack, VitestRunner } from '@vitest/runner'
import type { ResolvedConfig } from 'vitest'
import type { VitestExecutor } from 'vitest/execute'
import { rpc } from './rpc'
import { getConfig, importId } from './utils'
import { BrowserSnapshotEnvironment } from './snapshot'
interface BrowserRunnerOptions {
config: ResolvedConfig
}
export const browserHashMap = new Map<string, [test: boolean, timstamp: string]>()
interface CoverageHandler {
takeCoverage: () => Promise<unknown>
}
export function createBrowserRunner(
runnerClass: { new(config: ResolvedConfig): VitestRunner },
coverageModule: CoverageHandler | null,
): { new(options: BrowserRunnerOptions): VitestRunner } {
return class BrowserTestRunner extends runnerClass implements VitestRunner {
public config: ResolvedConfig
hashMap = browserHashMap
constructor(options: BrowserRunnerOptions) {
super(options.config)
this.config = options.config
}
onAfterRunTask = async (task: Task) => {
await super.onAfterRunTask?.(task)
if (this.config.bail && task.result?.state === 'fail') {
const previousFailures = await rpc().getCountOfFailedTests()
const currentFailures = 1 + previousFailures
if (currentFailures >= this.config.bail) {
rpc().onCancel('test-failure')
this.onCancel?.('test-failure')
}
}
}
onAfterRunFiles = async (files: File[]) => {
await super.onAfterRunFiles?.(files)
const coverage = await coverageModule?.takeCoverage?.()
if (coverage) {
await rpc().onAfterSuiteRun({
coverage,
transformMode: 'web',
projectName: this.config.name,
})
}
}
onCollected = async (files: File[]): Promise<unknown> => {
if (this.config.includeTaskLocation) {
try {
await updateFilesLocations(files)
}
catch (_) {}
}
return rpc().onCollected(files)
}
onTaskUpdate = (task: TaskResultPack[]): Promise<void> => {
return rpc().onTaskUpdate(task)
}
importFile = async (filepath: string) => {
let [test, hash] = this.hashMap.get(filepath) ?? [false, '']
if (hash === '') {
hash = Date.now().toString()
this.hashMap.set(filepath, [false, hash])
}
const base = this.config.base || '/'
// on Windows we need the unit to resolve the test file
const prefix = `${base}${/^\w:/.test(filepath) ? '@fs/' : ''}`
const query = `${test ? 'browserv' : 'v'}=${hash}`
const importpath = `${prefix}${filepath}?${query}`.replace(/\/+/g, '/')
await import(importpath)
}
}
}
let cachedRunner: VitestRunner | null = null
export async function initiateRunner() {
if (cachedRunner)
return cachedRunner
const config = getConfig()
const [{ VitestTestRunner, NodeBenchmarkRunner }, { takeCoverageInsideWorker, loadDiffConfig, loadSnapshotSerializers }] = await Promise.all([
importId('vitest/runners') as Promise<typeof import('vitest/runners')>,
importId('vitest/browser') as Promise<typeof import('vitest/browser')>,
])
const runnerClass = config.mode === 'test' ? VitestTestRunner : NodeBenchmarkRunner
const BrowserRunner = createBrowserRunner(runnerClass, {
takeCoverage: () => takeCoverageInsideWorker(config.coverage, { executeId: importId }),
})
if (!config.snapshotOptions.snapshotEnvironment)
config.snapshotOptions.snapshotEnvironment = new BrowserSnapshotEnvironment()
const runner = new BrowserRunner({
config,
})
const executor = { executeId: importId } as VitestExecutor
const [diffOptions] = await Promise.all([
loadDiffConfig(config, executor),
loadSnapshotSerializers(config, executor),
])
runner.config.diffOptions = diffOptions
cachedRunner = runner
return runner
}
async function updateFilesLocations(files: File[]) {
const { loadSourceMapUtils } = await importId('vitest/utils') as typeof import('vitest/utils')
const { TraceMap, originalPositionFor } = await loadSourceMapUtils()
const promises = files.map(async (file) => {
const result = await rpc().getBrowserFileSourceMap(file.filepath)
if (!result)
return null
const traceMap = new TraceMap(result as any)
function updateLocation(task: Task) {
if (task.location) {
const { line, column } = originalPositionFor(traceMap, task.location)
if (line != null && column != null)
task.location = { line, column: task.each ? column : column + 1 }
}
if ('tasks' in task)
task.tasks.forEach(updateLocation)
}
file.tasks.forEach(updateLocation)
return null
})
await Promise.all(promises)
}