// Copyright 2020-2021 IOTA Stiftung
// SPDX-License-Identifier: Apache-2.0

use iota_types::block::signature::Ed25519Signature;
use packable::PackableExt;

const ED25519_PUBLIC_KEY: &str = "0x1da5ddd11ba3f961acab68fafee3177d039875eaa94ac5fdbff8b53f0c50bfb9";
const ED25519_SIGNATURE: &str = "0xc6a40edf9a089f42c18f4ebccb35fe4b578d93b879e99b87f63573324a710d3456b03fb6d1fcc027e6401cbd9581f790ee3ed7a3f68e9c225fcb9f1cd7b7110d";

#[test]
fn kind() {
    assert_eq!(Ed25519Signature::KIND, 0);
}

#[test]
fn packed_len() {
    let pub_key_bytes: [u8; 32] = prefix_hex::decode(ED25519_PUBLIC_KEY).unwrap();
    let sig_bytes: [u8; 64] = prefix_hex::decode(ED25519_SIGNATURE).unwrap();
    let sig = Ed25519Signature::new(pub_key_bytes, sig_bytes);

    assert_eq!(sig.packed_len(), 32 + 64);
    assert_eq!(sig.pack_to_vec().len(), 32 + 64);
}

#[test]
fn pack_unpack_valid() {
    let pub_key_bytes: [u8; 32] = prefix_hex::decode(ED25519_PUBLIC_KEY).unwrap();
    let sig_bytes: [u8; 64] = prefix_hex::decode(ED25519_SIGNATURE).unwrap();
    let sig = Ed25519Signature::new(pub_key_bytes, sig_bytes);
    let sig_packed = sig.pack_to_vec();

    assert_eq!(sig, PackableExt::unpack_verified(sig_packed.as_slice(), &()).unwrap());
}