Made build portable

dependencies/fluent_ui-3.12.0/test/checkbox_test.dart

@@ -0,0 +1,37 @@
+import 'package:fluent_ui/fluent_ui.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+import 'app_test.dart';
+
+void main() {
+  testWidgets('Checkbox change state accordingly', (WidgetTester tester) async {
+    bool? checkBoxValue = false;
+
+    await tester.pumpWidget(
+      StatefulBuilder(
+        builder: (BuildContext context, StateSetter setState) {
+          return wrapApp(
+            child: Checkbox(
+              checked: checkBoxValue,
+              onChanged: (bool? value) {
+                setState(() {
+                  checkBoxValue = value;
+                });
+              },
+            ),
+          );
+        },
+      ),
+    );
+
+    expect(tester.widget<Checkbox>(find.byType(Checkbox)).checked, false);
+
+    await tester.tap(find.byType(Checkbox));
+    await tester.pumpAndSettle();
+    expect(checkBoxValue, true);
+
+    await tester.tap(find.byType(Checkbox));
+    await tester.pumpAndSettle();
+    expect(checkBoxValue, false);
+  });
+}