}
	defer f.Close()

	err = checkFileIsNotPartOfNetpoll(f)
	if err != nil {
		t.Fatal(err)
	}
}

func TestSerialFdsAreInitialised(t *testing.T) {
	for _, name := range []string{"COM1", "COM2", "COM3", "COM4"} {
		t.Run(name, func(t *testing.T) {
			h, err := syscall.CreateFile(syscall.StringToUTF16Ptr(name),
				syscall.GENERIC_READ|syscall.GENERIC_WRITE,
				0,
				nil,
				syscall.OPEN_EXISTING,

// See https://docs.microsoft.com/en-us/windows/desktop/fileio/naming-a-file
var badWindowsNames = []string{
	"CON",
	"PRN",
	"AUX",
	"NUL",
	"COM0",
	"COM1",
	"COM2",
	"COM3",
	"COM4",
	"COM5",
	"COM6",
	"COM7",
	"COM8",
	"COM9",
	"LPT0",
	"LPT1",
	"LPT2",
	"LPT3",
	"LPT4",
	"LPT5",
	"LPT6",
	"LPT7",
	"LPT8",
	"LPT9",
}

	{"NUL", false},
	{"nul", false},
	{"nul ", false},
	{"nul.", false},
	{"a/nul:", false},
	{"a/nul : a", false},
	{"com0", true},
	{"com1", false},
	{"com2", false},
	{"com3", false},
	{"com4", false},
	{"com5", false},
	{"com6", false},
	{"com7", false},
	{"com8", false},
	{"com9", false},
	{"com¹", false},
	{"com²", false},
	{"com³", false},
	{"com¹ : a", false},
	{"cOm1", false},