fix: remove setup files from coverage (#2574)

Closes #2190

packages/vitest/src/node/config.ts

@@ -1,5 +1,5 @@
 import { resolveModule } from 'local-pkg'
-import { normalize, resolve } from 'pathe'
+import { normalize, relative, resolve } from 'pathe'
 import c from 'picocolors'
 import type { ResolvedConfig as ResolvedViteConfig } from 'vite'
 
@@ -190,6 +190,7 @@ export function resolveConfig(
         ?? resolve(resolved.root, file),
     ),
   )
+  resolved.coverage.exclude.push(...resolved.setupFiles.map(file => relative(resolved.root, file)))
 
   resolved.forceRerunTriggers = [
     ...resolved.forceRerunTriggers,

test/coverage-test/coverage-report-tests/generic.report.test.ts

@@ -50,3 +50,16 @@ test('file using import.meta.env is included in report', async () => {
 
   expect(files).toContain('importEnv.ts.html')
 })
+
+test('files should not contain a setup file', () => {
+  const coveragePath = resolve('./coverage')
+  const files = fs.readdirSync(coveragePath)
+
+  expect(files).not.toContain('coverage-test')
+  expect(files).not.toContain('setup.ts.html')
+
+  const coverageSrcPath = resolve('./coverage/src')
+  const srcFiles = fs.readdirSync(coverageSrcPath)
+
+  expect(srcFiles).not.toContain('another-setup.ts.html')
+})

test/coverage-test/setup.ts

@@ -0,0 +1,2 @@
+// eslint-disable-next-line no-console
+console.log('Test Setup File')

test/coverage-test/src/another-setup.ts

@@ -0,0 +1,2 @@
+// eslint-disable-next-line no-console
+console.log('Another Setup File')

test/coverage-test/vitest.config.ts

@@ -1,3 +1,4 @@
+import { resolve } from 'pathe'
 import { defineConfig } from 'vitest/config'
 import vue from '@vitejs/plugin-vue'
 
@@ -16,5 +17,9 @@ export default defineConfig({
       all: true,
       reporter: ['html', 'text', 'lcov', 'json'],
     },
+    setupFiles: [
+      resolve(__dirname, './setup.ts'),
+      './src/another-setup.ts',
+    ],
   },
 })