package mifare

import "testing"

func TestSectorOfAndBlockRange(t *testing.T) {
	t.Parallel()
	if got := SectorOf(9); got != 2 {
		t.Errorf("SectorOf(9) = %d; want 2", got)
	}
	first, last := BlockRange(2)
	if first != 8 || last != 12 {
		t.Errorf("BlockRange(2) = %d,%d; want 8,12", first, last)
	}
}

func TestSectorBytes(t *testing.T) {
	t.Parallel()
	img := make([]byte, Size1K)
	img[2*SectorSize] = 0xAB
	got, err := SectorBytes(img, 2)
	if err != nil {
		t.Fatal(err)
	}
	if got[0] != 0xAB || len(got) != SectorSize {
		t.Errorf("SectorBytes sector 2: len=%d first=%02x", len(got), got[0])
	}
	if _, err := SectorBytes(img[:1023], 0); err == nil {
		t.Fatal("short image: want error")
	}
}