import 'package:swarm/swarm.dart';
import 'package:test/test.dart';

void main() {
  group('NIP-19 encoding', () {
    // Canonical test vectors from the NIP-19 specification.
    test('encodeNpub matches the spec vector', () {
      expect(
        encodeNpub(
          '7e7e9c42a91bfef19fa929e5fda1b72e0ebc1a4c1141673e2794234d86addf4e',
        ),
        equals(
          'npub10elfcs4fr0l0r8af98jlmgdh9c8tcxjvz9qkw038js35mp4dma8qzvjptg',
        ),
      );
    });

    test('encodeNsec matches the spec vector', () {
      expect(
        encodeNsec(
          '67dea2ed018072d675f5415ecfaed7d2597555e202d85b3d65ea4e58d2d92ffa',
        ),
        equals(
          'nsec1vl029mgpspedva04g90vltkh6fvh240zqtv9k0t9af8935ke9laqsnlfe5',
        ),
      );
    });

    test('npub/nsec carry the right human-readable prefix', () {
      const hex =
          '0000000000000000000000000000000000000000000000000000000000000001';
      expect(encodeNpub(hex), startsWith('npub1'));
      expect(encodeNsec(hex), startsWith('nsec1'));
    });

    test('rejects wrong-length hex', () {
      expect(() => encodeNpub('abcd'), throwsArgumentError);
      expect(() => encodeNsec(''), throwsArgumentError);
    });
  });
}