fix(coverage): exclude files and directories starting with dot by def…

…ault (#4428)

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:*',

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:*',

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', () => {

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
+}