package paddingx

import "testing"

func FuzzPadUnpadRoundTrip(f *testing.F) {
	f.Add([]byte("abc"))
	f.Add([]byte{})
	modes := []string{PKCS7, ZERO, ANSIX923}

	f.Fuzz(func(t *testing.T, data []byte) {
		for _, mode := range modes {
			padded, err := Pad(data, 16, mode)
			if err != nil {
				t.Fatalf("Pad failed: %v", err)
			}
			out, err := Unpad(padded, 16, mode)
			if err != nil {
				t.Fatalf("Unpad failed: %v", err)
			}
			if mode != ZERO && string(out) != string(data) {
				t.Fatalf("roundtrip mismatch for mode %s", mode)
			}
		}
	})
}