Made build portable

dependencies/fluent_ui-3.12.0/test/app_test.dart

@@ -0,0 +1,83 @@
+import 'package:flutter/material.dart' as m;
+import 'package:flutter_test/flutter_test.dart';
+
+import 'package:fluent_ui/fluent_ui.dart';
+
+Widget wrapApp({required Widget child}) {
+  return FluentApp(home: child);
+}
+
+void main() {
+  testWidgets('Can nest apps', (WidgetTester tester) async {
+    await tester.pumpWidget(
+      const FluentApp(
+        home: FluentApp(
+          home: Text('Home sweet home'),
+        ),
+      ),
+    );
+
+    expect(find.text('Home sweet home'), findsOneWidget);
+  });
+
+  testWidgets('Can get text scale from media query',
+      (WidgetTester tester) async {
+    double? textScaleFactor;
+    await tester.pumpWidget(FluentApp(
+      home: Builder(builder: (BuildContext context) {
+        textScaleFactor = MediaQuery.of(context).textScaleFactor;
+        return Container();
+      }),
+    ));
+    expect(textScaleFactor, isNotNull);
+    expect(textScaleFactor, equals(1.0));
+  });
+
+  testWidgets('Has default material and fluent localizations',
+      (WidgetTester tester) async {
+    await tester.pumpWidget(
+      FluentApp(
+        home: Builder(
+          builder: (BuildContext context) {
+            return Column(
+              children: <Widget>[
+                Text(MaterialLocalizations.of(context).selectAllButtonLabel),
+                Text(FluentLocalizations.of(context).selectAllActionLabel),
+              ],
+            );
+          },
+        ),
+      ),
+    );
+
+    // Default US "select all" text.
+    expect(find.text('Select all'), findsNWidgets(2));
+  });
+
+  testWidgets(
+    'A parent material Theme is not overriden by FluentApp',
+    (WidgetTester tester) async {
+      await tester.pumpWidget(
+        m.Theme(
+          data: m.ThemeData.light(),
+          child: FluentApp(
+            theme: ThemeData.dark(),
+            home: Builder(
+              builder: (BuildContext context) {
+                return Column(
+                  children: <Widget>[
+                    Text('${m.Theme.of(context).brightness}'),
+                    Text('${FluentTheme.of(context).brightness}'),
+                  ],
+                );
+              },
+            ),
+          ),
+        ),
+      );
+
+      expect(find.text('Brightness.light'), findsOneWidget);
+      expect(find.text('Brightness.dark'), findsOneWidget);
+    },
+  );
+}