A whole lot of stuff

test/ad_free_upsell_dialog_test.dart

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+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:provider/provider.dart';
+
+import 'package:fuel_tax_tracker/services/app_state.dart';
+import 'package:fuel_tax_tracker/widgets/ad_free_upsell_dialog.dart';
+
+/// Covers the "remove ads for a year" upsell shown right after a user
+/// watches the app's one ad placement — see `AppState.syncNow`'s
+/// `onAdWatched` hook, wired up in main.dart. Tested here as a standalone
+/// dialog function, matching backup_reminder_test.dart's convention.
+void main() {
+  Future<void> openDialog(WidgetTester tester, AppState appState) async {
+    await tester.pumpWidget(
+      ChangeNotifierProvider.value(
+        value: appState,
+        child: MaterialApp(
+          home: Builder(
+            builder: (context) => ElevatedButton(
+              onPressed: () => showAdFreeUpsellDialog(context),
+              child: const Text('open'),
+            ),
+          ),
+        ),
+      ),
+    );
+    await tester.tap(find.text('open'));
+    await tester.pumpAndSettle();
+  }
+
+  testWidgets('shows the pitch with both actions', (tester) async {
+    await openDialog(tester, AppState());
+
+    expect(find.text('Tired of Ads?'), findsOneWidget);
+    expect(find.text('Not Now'), findsOneWidget);
+    expect(find.text('Remove Ads'), findsOneWidget);
+  });
+
+  testWidgets('falls back to generic copy when no price is loaded yet', (tester) async {
+    await openDialog(tester, AppState());
+
+    expect(find.textContaining('a single one-time purchase'), findsOneWidget);
+    expect(find.textContaining('\$'), findsNothing);
+  });
+
+  testWidgets('Not Now closes the dialog without navigating anywhere', (tester) async {
+    await openDialog(tester, AppState());
+
+    await tester.tap(find.text('Not Now'));
+    await tester.pumpAndSettle();
+
+    expect(find.text('Tired of Ads?'), findsNothing);
+  });
+
+  testWidgets('Remove Ads closes the dialog and starts the purchase flow', (tester) async {
+    final appState = AppState();
+    await openDialog(tester, appState);
+
+    await tester.tap(find.text('Remove Ads'));
+    await tester.pumpAndSettle();
+
+    expect(find.text('Tired of Ads?'), findsNothing, reason: 'dialog closed');
+    // buyAdFreeYear() delegates to PurchaseService, which — with no real
+    // store connection in tests — surfaces its failure through
+    // AppState.purchaseError rather than throwing, so tapping through is
+    // enough to confirm the button actually invoked it without crashing.
+    expect(appState.purchaseError, isNotNull);
+  });
+}