mileograph_flutter/test/pages/trips_page_test.dart

import 'package:flutter_test/flutter_test.dart';
import 'package:shared_preferences/shared_preferences.dart';

import 'package:mileograph_flutter/components/pages/trips.dart';
import 'package:mileograph_flutter/services/distance_unit_service.dart';

import '../helpers/fake_services.dart';
import '../helpers/test_app.dart';
import '../helpers/test_data.dart';

void main() {
  TestWidgetsFlutterBinding.ensureInitialized();

  setUpAll(() {
    SharedPreferences.setMockInitialValues({});
  });

  testWidgets('Trips page shows trip details', (tester) async {
    final data = FakeDataService()
      ..tripDetailsValue = TestData.tripDetails
      ..tripListValue = TestData.tripSummaries;
    final auth = FakeAuthService(api: FakeApiService());
    final distanceUnits = FakeDistanceUnitService(
      unitOverride: DistanceUnit.milesDecimal,
    );

    await tester.pumpWidget(
      buildTestApp(
        child: const TripsPage(),
        dataService: data,
        authService: auth,
        distanceUnitService: distanceUnits,
      ),
    );
    await tester.pumpAndSettle();

    expect(find.text('Trips'), findsOneWidget);
    expect(find.text('North Run'), findsOneWidget);
    expect(find.textContaining('mi'), findsWidgets);
  });

  testWidgets('Trips page shows empty state', (tester) async {
    final data = FakeDataService()
      ..tripDetailsValue = []
      ..tripListValue = []
      ..isTripDetailsLoadingValue = false;
    final auth = FakeAuthService(api: FakeApiService());

    await tester.pumpWidget(
      buildTestApp(
        child: const TripsPage(),
        dataService: data,
        authService: auth,
      ),
    );
    await tester.pumpAndSettle();

    expect(find.text('No trips yet'), findsOneWidget);
    expect(
      find.text('Use the Add entry flow to start grouping legs into trips.'),
      findsOneWidget,
    );
  });
}