halkyon/halkyon_learn_flutter/test/feature/jellyfin/jellyfin_suggestion_test.dart

import 'package:flutter_test/flutter_test.dart';
import 'package:halkyon_learn_flutter/src/feature/jellyfin/data/jellyfin_suggestion.dart';

void main() {
  test('asks the instance once, as it is first needed', () async {
    var asked = 0;
    final suggestion = JellyfinSuggestion(() async {
      asked++;
      return 'https://jellyfin.halkyon.eu/';
    });
    expect(suggestion.server.value, isNull);

    await suggestion.look();
    await suggestion.look();

    expect(asked, 1);
    expect(suggestion.server.value, Uri.parse('https://jellyfin.halkyon.eu/'));
  });

  test('asks again only after asking failed; none named is none', () async {
    var asked = 0;
    final suggestion = JellyfinSuggestion(() async {
      asked++;
      if (asked == 1) {
        throw Exception('offline');
      }
      return null;
    });

    await suggestion.look();
    expect(suggestion.server.value, isNull);
    await suggestion.look();
    await suggestion.look();

    expect(asked, 2);
    expect(suggestion.server.value, isNull);
  });
}