test: dynamic form a11y failure.

tests/HeadlessTest.Ursa/Controls/FormTests/AccessibilityTests/DynamicForm.axaml

@@ -0,0 +1,26 @@
+<UserControl
+    x:Class="HeadlessTest.Ursa.Controls.FormTests.AccessibilityTests.DynamicForm"
+    xmlns="https://github.com/avaloniaui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:accessibilityTests="clr-namespace:HeadlessTest.Ursa.Controls.FormTests.AccessibilityTests"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:u="https://irihi.tech/ursa"
+    d:DesignHeight="450"
+    d:DesignWidth="800"
+    x:CompileBindings="True"
+    x:DataType="accessibilityTests:DynamicFormViewModel"
+    mc:Ignorable="d">
+    <u:Form Name="form" ItemsSource="{Binding Items}">
+        <u:Form.Styles>
+            <Style x:DataType="accessibilityTests:FormTextViewModel" Selector="u|FormItem">
+                <Setter Property="Label" Value="{Binding Label}" />
+            </Style>
+        </u:Form.Styles>
+        <u:Form.ItemTemplate>
+            <DataTemplate DataType="accessibilityTests:FormTextViewModel">
+                <TextBox Text="{Binding Value}" />
+            </DataTemplate>
+        </u:Form.ItemTemplate>
+    </u:Form>
+</UserControl>

tests/HeadlessTest.Ursa/Controls/FormTests/AccessibilityTests/DynamicForm.axaml.cs

@@ -0,0 +1,31 @@
+using System.Collections.ObjectModel;
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+using CommunityToolkit.Mvvm.ComponentModel;
+
+namespace HeadlessTest.Ursa.Controls.FormTests.AccessibilityTests;
+
+public partial class DynamicForm : UserControl
+{
+    public DynamicForm()
+    {
+        InitializeComponent();
+        this.DataContext = new DynamicFormViewModel();
+    }
+}
+
+public partial class DynamicFormViewModel: ObservableObject
+{
+    public ObservableCollection<FormTextViewModel> Items { get; set; } =
+    [
+        new() { Label = "_Name" },
+        new() { Label = "_Email" }
+    ];
+}
+
+public partial class FormTextViewModel : ObservableObject
+{
+    [ObservableProperty] private string? _label;
+    [ObservableProperty] private string? _value;
+}

tests/HeadlessTest.Ursa/Controls/FormTests/AccessibilityTests/FormAccessibilityTests.cs

@@ -2,13 +2,15 @@ using Avalonia.Controls;
 using Avalonia.Headless;
 using Avalonia.Headless.XUnit;
 using Avalonia.Input;
+using Avalonia.LogicalTree;
+using Ursa.Controls;
 
 namespace HeadlessTest.Ursa.Controls.FormTests.AccessibilityTests;
 
 public class FormAccessibilityTests
 {
     [AvaloniaFact]
-    public void Form_Inner_Control_Accessible()
+    public void Static_Form_Inner_Control_Accessible()
     {
         var window = new Window();
         var form = new StaticForm();
@@ -24,4 +26,35 @@ public class FormAccessibilityTests
         Assert.False(form.NameBox.IsFocused);
         Assert.True(form.EmailBox.IsFocused);
     }
+
+    [AvaloniaFact]
+    public void Dynamic_Form_Inner_Control_Accessible()
+    {
+        var window = new Window();
+        var form = new DynamicForm();
+        window.Content = form;
+        window.Show();
+
+        var logicalChildren = form.form.GetLogicalChildren().ToList();
+        Assert.Equal(2, logicalChildren.Count);
+        var first = logicalChildren[0] as FormItem;
+        var second = logicalChildren[1] as FormItem;
+        Assert.NotNull(first);
+        Assert.NotNull(second);
+
+        var text1 = first.GetLogicalChildren().OfType<TextBox>().FirstOrDefault();
+        var text2 = second.GetLogicalChildren().OfType<TextBox>().FirstOrDefault();
+        
+        Assert.NotNull(text1);
+        Assert.NotNull(text2);
+        
+        Assert.False(text1.IsFocused);
+        Assert.False(text2.IsFocused);
+        window.KeyPressQwerty(PhysicalKey.N, RawInputModifiers.Alt);
+        Assert.True(text1.IsFocused);
+        Assert.False(text2.IsFocused);
+        window.KeyPressQwerty(PhysicalKey.E, RawInputModifiers.Alt);
+        Assert.False(text1.IsFocused);
+        Assert.True(text2.IsFocused);
+    }
 }