add traction import export

test/pages/dashboard_page_test.dart

@@ -0,0 +1,83 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:go_router/go_router.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+import 'package:mileograph_flutter/components/pages/dashboard.dart';
+
+import '../helpers/fake_services.dart';
+import '../helpers/test_app.dart';
+import '../helpers/test_data.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  setUpAll(() {
+    SharedPreferences.setMockInitialValues({});
+  });
+
+  testWidgets('Dashboard renders stats and panels', (tester) async {
+    final data = FakeDataService()
+      ..homepageStatsValue = TestData.homepageStats
+      ..tripsValue = TestData.tripSummaries
+      ..onThisDayValue = TestData.onThisDayLegs()
+      ..classClearanceProgressValue = TestData.classClearance
+      ..latestLocoChangesValue = TestData.latestLocoChanges
+      ..tractionValue = TestData.traction
+      ..currentYearMileageValue = 1200.5;
+    final auth = FakeAuthService(api: FakeApiService());
+    final router = GoRouter(
+      routes: [
+        GoRoute(
+          path: '/',
+          builder: (context, state) => const Dashboard(),
+        ),
+      ],
+    );
+
+    await tester.pumpWidget(
+      buildTestRouterApp(
+        router: router,
+        dataService: data,
+        authService: auth,
+      ),
+    );
+    await tester.pumpAndSettle();
+
+    expect(find.text('Dashboard'), findsOneWidget);
+    expect(find.textContaining('Welcome back, Alex Rider'), findsOneWidget);
+    expect(find.text('Top traction'), findsOneWidget);
+    expect(find.text('67 001'), findsOneWidget);
+    expect(find.text('On this day'), findsOneWidget);
+    expect(find.text('York → Durham'), findsOneWidget);
+    expect(find.text('Latest Loco Changes'), findsOneWidget);
+    expect(find.text('Status'), findsWidgets);
+    expect(find.text('Active'), findsWidgets);
+  });
+
+  testWidgets('Dashboard shows loading overlay without stats', (tester) async {
+    final data = FakeDataService()
+      ..homepageStatsValue = null
+      ..isHomepageLoadingValue = true;
+    final auth = FakeAuthService(api: FakeApiService());
+    final router = GoRouter(
+      routes: [
+        GoRoute(
+          path: '/',
+          builder: (context, state) => const Dashboard(),
+        ),
+      ],
+    );
+
+    await tester.pumpWidget(
+      buildTestRouterApp(
+        router: router,
+        dataService: data,
+        authService: auth,
+      ),
+    );
+    await tester.pump();
+
+    expect(find.text('Loading dashboard data...'), findsOneWidget);
+    expect(find.byType(CircularProgressIndicator), findsWidgets);
+  });
+}