feat: PlayButtonOverlay is showing select character dialog

lib/game/view/widgets/play_button_overlay.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:pinball/game/pinball_game.dart';
 import 'package:pinball/l10n/l10n.dart';
+import 'package:pinball/theme/theme.dart';
 
 /// {@template play_button_overlay}
 /// [Widget] that renders the button responsible to starting the game
@@ -18,9 +19,28 @@ class PlayButtonOverlay extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     final l10n = context.l10n;
+
     return Center(
       child: ElevatedButton(
-        onPressed: _game.gameFlowController.start,
+        onPressed: () {
+          _game.gameFlowController.start();
+          showDialog<void>(
+            context: context,
+            builder: (_) {
+              final width = MediaQuery.of(context).size.width * 0.9;
+              final height = MediaQuery.of(context).size.height * 0.9;
+
+              return Center(
+                child: SizedBox(
+                  height: height,
+                  width: width,
+                  child: const CharacterSelectionPage(),
+                ),
+              );
+            },
+            barrierDismissible: false,
+          );
+        },
         child: Text(l10n.play),
       ),
     );

test/game/view/widgets/play_button_overlay_test.dart

@@ -1,8 +1,9 @@
 import 'package:flutter_test/flutter_test.dart';
 import 'package:mocktail/mocktail.dart';
 import 'package:pinball/game/game.dart';
+import 'package:pinball/theme/theme.dart';
 
-import '../../helpers/helpers.dart';
+import '../../../helpers/helpers.dart';
 
 void main() {
   group('PlayButtonOverlay', () {
@@ -31,5 +32,15 @@ void main() {
 
       verify(gameFlowController.start).called(1);
     });
+
+    testWidgets('is showing CharacterSelectionPage dialog when taped',
+        (tester) async {
+      await tester.pumpApp(PlayButtonOverlay(game: game));
+
+      await tester.tap(find.text('Play'));
+      await tester.pump();
+
+      expect(find.byType(CharacterSelectionPage), findsOneWidget);
+    });
   });
 }