swarm/test/nostr_profile_fetch_test.dart

import 'dart:convert';

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

import 'fake_relay_connection.dart';

Map<String, dynamic> _kind0(String id, int createdAt, Map<String, dynamic> profile) => {
      'id': id,
      'pubkey': 'pub',
      'created_at': createdAt,
      'kind': 0,
      'tags': [],
      'content': jsonEncode(profile),
      'sig': 'sig',
    };

void main() {
  group('fetchProfileFor', () {
    test('parses the kind-0 content into a NostrProfile (incl. nip05)', () async {
      final fake = FakeRelayConnection();
      addTearDown(fake.dispose);
      fake.onReq = (subId) {
        fake.push(jsonEncode([
          'EVENT',
          subId,
          _kind0('e1', 100, {
            'display_name': 'Alice',
            'picture': 'https://cdn/x.jpg',
            'nip05': 'alice@example.com',
          }),
        ]));
        fake.push(jsonEncode(['EOSE', subId]));
      };
      final fetcher = NostrFetchActor(
        relayUrls: ['ws://relay1'],
        connectionFactory: (_) => fake,
      );

      final profile = await fetchProfileFor(fetcher, 'pub');

      expect(profile, isNotNull);
      expect(profile!.displayName, equals('Alice'));
      expect(profile.picture, equals('https://cdn/x.jpg'));
      expect(profile.nip05, equals('alice@example.com'));
    });

    test('picks the newest profile when several are returned', () async {
      final fake = FakeRelayConnection();
      addTearDown(fake.dispose);
      fake.onReq = (subId) {
        fake.push(jsonEncode(
            ['EVENT', subId, _kind0('old', 100, {'display_name': 'Old'})]));
        fake.push(jsonEncode(
            ['EVENT', subId, _kind0('new', 200, {'display_name': 'New'})]));
        fake.push(jsonEncode(['EOSE', subId]));
      };
      final fetcher = NostrFetchActor(
        relayUrls: ['ws://relay1'],
        connectionFactory: (_) => fake,
      );

      final profile = await fetchProfileFor(fetcher, 'pub');
      expect(profile!.displayName, equals('New'));
    });

    test('returns null when no profile exists', () async {
      final fake = FakeRelayConnection();
      addTearDown(fake.dispose);
      fake.onReq = (subId) => fake.push(jsonEncode(['EOSE', subId]));
      final fetcher = NostrFetchActor(
        relayUrls: ['ws://relay1'],
        connectionFactory: (_) => fake,
      );

      expect(await fetchProfileFor(fetcher, 'pub'), isNull);
    });
  });
}