rely/test/features/signals/signals_feed_synthesizer_test.dart

import 'package:flutter_test/flutter_test.dart';
import 'package:relationship_saver/app/state/local_data_state.dart';
import 'package:relationship_saver/features/ideas/domain/idea_models.dart';
import 'package:relationship_saver/features/people/domain/person_models.dart';
import 'package:relationship_saver/features/reminders/domain/reminder_models.dart';
import 'package:relationship_saver/features/share_intake/domain/share_models.dart';
import 'package:relationship_saver/features/signals/domain/signals_feed_synthesizer.dart';

void main() {
  test(
    'creates a check-in signal when interaction is stale and no reminder exists',
    () {
      final LocalDataState state = LocalDataState(
        people: <PersonProfile>[
          PersonProfile(
            id: 'p-1',
            name: 'Alex',
            relationship: 'Friend',
            affinityScore: 80,
            nextMoment: DateTime(2026, 4, 30),
            tags: const <String>[],
            notes: '',
            lastInteractedAt: DateTime(2026, 4, 1),
          ),
        ],
        moments: const [],
        ideas: const [],
        reminders: const [],
        tasks: const [],
      );

      final signals = SignalsFeedSynthesizer.synthesize(
        state: state,
        now: DateTime(2026, 4, 17),
      );

      expect(signals, isNotEmpty);
      expect(signals.first.title, 'Check in with Alex');
      expect(
        signals.first.metadata?[signalMetadataActionKey],
        createReminderSignalAction,
      );
    },
  );

  test(
    'suppresses stale check-in signal when a nearby reminder already exists',
    () {
      final LocalDataState state = LocalDataState(
        people: <PersonProfile>[
          PersonProfile(
            id: 'p-1',
            name: 'Alex',
            relationship: 'Friend',
            affinityScore: 80,
            nextMoment: DateTime(2026, 4, 30),
            tags: const <String>[],
            notes: '',
            lastInteractedAt: DateTime(2026, 4, 1),
          ),
        ],
        moments: const [],
        ideas: const [],
        reminders: <ReminderRule>[
          ReminderRule(
            id: 'r-1',
            personId: 'p-1',
            title: 'Weekly check in',
            cadence: ReminderCadence.weekly,
            nextAt: DateTime(2026, 4, 18),
          ),
        ],
        tasks: const [],
      );

      final signals = SignalsFeedSynthesizer.synthesize(
        state: state,
        now: DateTime(2026, 4, 17),
      );

      expect(
        signals.where((signal) => signal.title.contains('Check in')),
        isEmpty,
      );
    },
  );

  test('creates an upcoming date signal with idea count context', () {
    final DateTime now = DateTime(2026, 4, 17);
    final LocalDataState state = LocalDataState(
      people: <PersonProfile>[
        PersonProfile(
          id: 'p-1',
          name: 'Mila',
          relationship: 'Sister',
          affinityScore: 88,
          nextMoment: DateTime(2026, 4, 25),
          tags: const <String>[],
          notes: '',
          lastInteractedAt: DateTime(2026, 4, 16),
        ),
      ],
      moments: const [],
      ideas: <RelationshipIdea>[
        RelationshipIdea(
          id: 'i-1',
          personId: 'p-1',
          type: IdeaType.gift,
          title: 'Plant stand',
          details: 'Oak finish',
          createdAt: DateTime(2026, 4, 10),
        ),
      ],
      reminders: const [],
      tasks: const [],
      importantDates: <PersonImportantDate>[
        PersonImportantDate(
          id: 'd-1',
          personId: 'p-1',
          label: 'Birthday',
          date: now.add(const Duration(days: 3)),
          classification: 'birthday',
          sourceKind: CaptureSourceKind.manual,
          createdAt: now.subtract(const Duration(days: 1)),
          updatedAt: now,
        ),
      ],
    );

    final signals = SignalsFeedSynthesizer.synthesize(state: state, now: now);

    expect(
      signals.any(
        (signal) => signal.title.contains('Birthday for Mila is in 3 days'),
      ),
      isTrue,
    );
  });
}