func TestTest(t *testing.T) {
		}`
	tg.tempFile("src/p1/p1_test.go", strings.Replace(testSrc, "package_test", "p1_test", 1))
	tg.tempFile("src/p2/p2_test.go", strings.Replace(testSrc, "package_test", "p2_test", 1))
	tg.tempFile("src/p3/p3_test.go", strings.Replace(testSrc, "package_test", "p3_test", 1))
	tg.tempFile("src/p4/p4_test.go", strings.Replace(testSrc, "package_test", "p4_test", 1))
	tg.setenv("GOPATH", tg.path("."))

	// ServeFile, test it:
	test(Dir("/etc/hosts"), "")
	test(Dir("/etc/hosts"), "/")
	test(Dir("/etc/hosts"), "../")
}

func TestEmptyDirOpenCWD(t *testing.T) {
	test := func(d Dir) {
		name := "fs_test.go"
		f, err := d.Open(name)
		if err != nil {
			t.Fatalf("open of %s: %v", name, err)
		}
		defer f.Close()
	}
	test(Dir(""))
	test(Dir("."))
	test(Dir("./"))
}

Roland Shoemaker <******@****.***> 1712850636 -0700

	benchmarkStat(b, filepath.Join(runtime.GOROOT(), "src/os/os_test.go"))
}

func BenchmarkStatDir(b *testing.B) {
	benchmarkStat(b, filepath.Join(runtime.GOROOT(), "src/os"))
}

func BenchmarkLstatDot(b *testing.B) {
	benchmarkLstat(b, ".")
}

func BenchmarkLstatFile(b *testing.B) {
	benchmarkLstat(b, filepath.Join(runtime.GOROOT(), "src/os/os_test.go"))
}

func BenchmarkLstatDir(b *testing.B) {