test(a11y): menu titles and items are one semantics node (#1815)

test/shared/widgets/querya_menu_semantics_test.dart

@@ -0,0 +1,82 @@
+import 'package:flutter/material.dart' as material;
+import 'package:flutter/gestures.dart' show kSecondaryButton;
+import 'package:flutter/semantics.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:querya_desktop/shared/widgets/querya_context_menu.dart';
+import 'package:querya_desktop/shared/widgets/querya_menu_bar.dart';
+
+import '../../support/querya_theme_test_shell.dart';
+
+/// How many semantics nodes carry [label] (#1815): a screen reader stops on
+/// each of them, so a menu title must be one node, not two.
+int _nodesLabelled(WidgetTester tester, String label) {
+  var count = 0;
+  void visit(SemanticsNode node) {
+    if (node.label.split('\n').first.trim() == label) count++;
+    node.visitChildren((c) {
+      visit(c);
+      return true;
+    });
+  }
+
+  visit(tester.binding.pipelineOwner.semanticsOwner!.rootSemanticsNode!);
+  return count;
+}
+
+void main() {
+  testWidgets('each menu bar title is one semantics node (#1815)',
+      (tester) async {
+    final handle = tester.ensureSemantics();
+    await tester.pumpWidget(
+      queryaThemeTestShell(
+        child: QueryaMenuBar(
+          children: [
+            QueryaMenuItem(
+              subMenu: [
+                QueryaMenuItem(onTap: () {}, child: const material.Text('Open')),
+              ],
+              child: const material.Text('File'),
+            ),
+            QueryaMenuItem(
+              subMenu: [
+                QueryaMenuItem(onTap: () {}, child: const material.Text('Copy')),
+              ],
+              child: const material.Text('Edit'),
+            ),
+          ],
+        ),
+      ),
+    );
+    await tester.pump();
+
+    expect(_nodesLabelled(tester, 'File'), 1);
+    expect(_nodesLabelled(tester, 'Edit'), 1);
+    handle.dispose();
+  });
+
+  testWidgets('each context menu item is one semantics node (#1815)',
+      (tester) async {
+    final handle = tester.ensureSemantics();
+    await tester.pumpWidget(
+      queryaThemeTestShell(
+        child: material.Center(
+          child: QueryaContextMenu(
+            items: [
+              QueryaMenuItem(onTap: () {}, child: const material.Text('Copy Value')),
+              QueryaMenuItem(
+                  onTap: () {}, child: const material.Text('Copy with Headers')),
+            ],
+            child: const material.SizedBox(
+                width: 200, height: 100, child: material.Text('target')),
+          ),
+        ),
+      ),
+    );
+    await tester.tap(find.text('target'), buttons: kSecondaryButton);
+    await tester.pumpAndSettle();
+
+    expect(_nodesLabelled(tester, 'Copy Value'), 1);
+    expect(_nodesLabelled(tester, 'Copy with Headers'), 1);
+    handle.dispose();
+  });
+}