test: add test case for vitest-dev#3131

test/config/package.json

@@ -2,7 +2,7 @@
   "name": "@vitest/test-config",
   "private": true,
   "scripts": {
-    "test": "vitest run test/**"
+    "test": "vitest run"
   },
   "devDependencies": {
     "execa": "^7.0.0",

test/config/test/failures.test.ts

@@ -1,4 +1,5 @@
 import { expect, test } from 'vitest'
+import { version } from 'vitest/package.json'
 
 import { runVitest } from './utils'
 
@@ -57,3 +58,16 @@ test('boolean browser flag without dot notation, with more dot notation options'
   expect(error).toMatch('Error: A boolean argument "--browser" was used with dot notation arguments "--browser.name".')
   expect(error).toMatch('Please specify the "--browser" argument with dot notation as well: "--browser.enabled"')
 })
+
+test('version number is printed when coverage provider fails to load', async () => {
+  const { error, output } = await runVitest('run', [
+    '--coverage.enabled',
+    '--coverage.provider',
+    'custom',
+    '--coverage.customProviderModule',
+    './non-existing-module.ts',
+  ])
+
+  expect(output).toMatch(`RUN  v${version}`)
+  expect(error).toMatch('Error: Failed to load custom CoverageProviderModule from ./non-existing-module.ts')
+})

test/config/test/utils.ts

@@ -4,15 +4,17 @@ import stripAnsi from 'strip-ansi'
 export async function runVitest(mode: 'run' | 'watch', cliArguments: string[]) {
   const subprocess = execa('vitest', [mode, 'fixtures/test/', ...cliArguments])
   let error = ''
+  let output = ''
+
+  subprocess.stdout?.on('data', (data) => {
+    output += stripAnsi(data.toString())
+  })
 
   subprocess.stderr?.on('data', (data) => {
     error += stripAnsi(data.toString())
-
-    // Sometimes on Windows CI execa doesn't exit properly. Force exit when stderr is caught.
-    subprocess.kill()
   })
 
   await new Promise(resolve => subprocess.on('exit', resolve))
 
-  return { error }
+  return { output, error }
 }

test/config/vitest.config.ts

@@ -2,6 +2,7 @@ import { defineConfig } from 'vitest/config'
 
 export default defineConfig({
   test: {
+    include: ['test/**.test.ts'],
     testTimeout: 60_000,
     chaiConfig: {
       truncateThreshold: 999,