package bambunfc

import (
	"encoding/hex"
	"errors"
	"testing"
)

func TestKeysAGolden11223344(t *testing.T) {
	t.Parallel()
	uid, err := hex.DecodeString("11223344")
	if err != nil {
		t.Fatal(err)
	}
	want := []string{
		"0729F3B2D37A", "2027210D85E7", "D77B2E7C92BC", "29126A53A2EE",
		"E49850F62778", "9A9128B882BD", "45F69B980786", "90DD67095D6B",
		"EB994746CD69", "B4AEB23473E3", "445E850D699C", "5C9BD5BD9FD7",
		"1062AFE9F5F5", "81EE5259CF6B", "0920CEEEE2BC", "BAF630CCBFD3",
	}
	got, err := KeysA(uid)
	if err != nil {
		t.Fatal(err)
	}
	for i, w := range want {
		if h := hex.EncodeToString(got[i][:]); h != toLower(w) {
			t.Errorf("key[%d] = %s; want %s", i, h, toLower(w))
		}
	}
}

func toLower(s string) string {
	b := []byte(s)
	for i, c := range b {
		if c >= 'A' && c <= 'F' {
			b[i] = c + ('a' - 'A')
		}
	}
	return string(b)
}

func TestKeysAEmpty(t *testing.T) {
	t.Parallel()
	_, err := KeysA(nil)
	if !errors.Is(err, ErrUID) {
		t.Errorf("KeysA(nil) err = %v; want ErrUID", err)
	}
}