From a8577f996b67fedbfe76b9ca8059ea0554db15e7 Mon Sep 17 00:00:00 2001
From: Ahmed Mohamed Sameh <ahmedsameha1@gmail.com>
Date: Sat, 6 Dec 2025 01:46:25 +0200
Subject: [PATCH] Make sure that CupertinoNavigationBar doesn't crash in 0x0
 environment (#179235)

This is my attempt to handle
https://github.com/flutter/flutter/issues/6537 for the
CupertinoNavigationBar widget.

Co-authored-by: Tong Mu <dkwingsmt@users.noreply.github.com>
---
 packages/flutter/test/cupertino/nav_bar_test.dart | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/packages/flutter/test/cupertino/nav_bar_test.dart b/packages/flutter/test/cupertino/nav_bar_test.dart
index cd0fae6d29b..a38457b921a 100644
--- a/packages/flutter/test/cupertino/nav_bar_test.dart
+++ b/packages/flutter/test/cupertino/nav_bar_test.dart
@@ -3329,6 +3329,15 @@ void main() {
     expect(find.text('First'), findsNothing);
     expect(find.text('Second'), findsOneWidget);
   });
+
+  testWidgets('CupertinoNavigationBar does not crash at zero area', (WidgetTester tester) async {
+    await tester.pumpWidget(
+      const CupertinoApp(
+        home: Center(child: SizedBox.shrink(child: CupertinoNavigationBar())),
+      ),
+    );
+    expect(tester.getSize(find.byType(CupertinoNavigationBar)), Size.zero);
+  });
 }
 
 class _ExpectStyles extends StatelessWidget {