From b3327a64c97fbe9b15455fead987ede6ac7c0630 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ari=20Perkki=C3=B6?= <ari.perkkio@gmail.com>
Date: Sat, 4 Nov 2023 15:28:18 +0200
Subject: [PATCH] fix(coverage): exclude files and directories starting with
 dot by default (#4428)

---
 docs/config/index.md                                         | 1 +
 packages/vitest/src/defaults.ts                              | 1 +
 .../coverage-report-tests/generic.report.test.ts             | 5 +++++
 .../excluded-from-coverage.ts                                | 5 +++++
 4 files changed, 12 insertions(+)
 create mode 100644 test/coverage-test/src/.should-be-excluded-from-coverage/excluded-from-coverage.ts

diff --git a/docs/config/index.md b/docs/config/index.md
index 6ee0d0dd38ca..42170d2c8275 100644
--- a/docs/config/index.md
+++ b/docs/config/index.md
@@ -1066,6 +1066,7 @@ List of files included in coverage as glob patterns
 [
   'coverage/**',
   'dist/**',
+  '**/[.]**',
   'packages/*/test?(s)/**',
   '**/*.d.ts',
   '**/virtual:*',
diff --git a/packages/vitest/src/defaults.ts b/packages/vitest/src/defaults.ts
index 0d44c755e05f..4cfbfc8027e9 100644
--- a/packages/vitest/src/defaults.ts
+++ b/packages/vitest/src/defaults.ts
@@ -13,6 +13,7 @@ export const benchmarkConfigDefaults: Required<Omit<BenchmarkUserOptions, 'outpu
 const defaultCoverageExcludes = [
   'coverage/**',
   'dist/**',
+  '**/[.]**',
   'packages/*/test?(s)/**',
   '**/*.d.ts',
   '**/virtual:*',
diff --git a/test/coverage-test/coverage-report-tests/generic.report.test.ts b/test/coverage-test/coverage-report-tests/generic.report.test.ts
index ecec122ed0ca..2ad012666812 100644
--- a/test/coverage-test/coverage-report-tests/generic.report.test.ts
+++ b/test/coverage-test/coverage-report-tests/generic.report.test.ts
@@ -35,6 +35,11 @@ test('all includes untested files', () => {
   const files = fs.readdirSync(coveragePath)
 
   expect(files).toContain('untested-file.ts.html')
+
+  // Directories starting with dot should be excluded
+  expect(files).not.toContain('.should-be-excluded-from-coverage/excluded-from-coverage.ts.html')
+  expect(files).not.toContain('.should-be-excluded-from-coverage')
+  expect(files).not.toContain('excluded-from-coverage.ts.html')
 })
 
 test('files should not contain query parameters', () => {
diff --git a/test/coverage-test/src/.should-be-excluded-from-coverage/excluded-from-coverage.ts b/test/coverage-test/src/.should-be-excluded-from-coverage/excluded-from-coverage.ts
new file mode 100644
index 000000000000..64bda3a2b8cb
--- /dev/null
+++ b/test/coverage-test/src/.should-be-excluded-from-coverage/excluded-from-coverage.ts
@@ -0,0 +1,5 @@
+// This file should be excluded from coverage report
+
+export function uncoveredFile() {
+  return 0
+}