fixing landing page test

pubspec.lock

@@ -254,6 +254,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.1"
+  mockingjay:
+    dependency: "direct dev"
+    description:
+      name: mockingjay
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.2.0"
   mocktail:
     dependency: "direct dev"
     description:

pubspec.yaml

@@ -21,6 +21,7 @@ dev_dependencies:
   bloc_test: ^9.0.2
   flutter_test:
     sdk: flutter
+  mockingjay: ^0.2.0
   mocktail: ^0.2.0
   very_good_analysis: ^2.4.0
 

test/helpers/pump_app.dart

@@ -8,10 +8,14 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_localizations/flutter_localizations.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:mockingjay/mockingjay.dart';
 import 'package:pinball/l10n/l10n.dart';
 
 extension PumpApp on WidgetTester {
-  Future<void> pumpApp(Widget widget) {
+  Future<void> pumpApp(
+    Widget widget, {
+    MockNavigator? navigator,
+  }) {
     return pumpWidget(
       MaterialApp(
         localizationsDelegates: const [
@@ -19,7 +23,9 @@ extension PumpApp on WidgetTester {
           GlobalMaterialLocalizations.delegate,
         ],
         supportedLocales: AppLocalizations.supportedLocales,
-        home: widget,
+        home: navigator != null
+            ? MockNavigatorProvider(navigator: navigator, child: widget)
+            : widget,
       ),
     );
   }

test/landing/view/landing_page_test.dart

@@ -1,8 +1,6 @@
-import 'dart:async';
-
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
-import 'package:pinball/game/game.dart';
+import 'package:mockingjay/mockingjay.dart';
 import 'package:pinball/landing/landing.dart';
 
 import '../../helpers/helpers.dart';
@@ -16,17 +14,20 @@ void main() {
 
     testWidgets('tapping on TextButton navigates to PinballGamePage',
         (tester) async {
-      // TODO(erickzanardo): Make test pass.
+      final navigator = MockNavigator();
-      await tester.pumpApp(const LandingPage());
+      when(() => navigator.push<void>(any())).thenAnswer((_) async {});
+
+      await tester.pumpApp(
+        const LandingPage(),
+        navigator: navigator,
+      );
       await tester.tap(
         find.byType(
           TextButton,
         ),
       );
-      await tester.pumpAndSettle();
 
-      expect(find.byType(PinballGamePage), findsOneWidget);
+      verify(() => navigator.push<void>(any())).called(1);
-      expect(find.byType(LandingPage), findsNothing);
     });
   });
 }