test: AutoCompleteBox tests.

src/Ursa/Controls/AutoCompleteBox/AutoCompleteBox.cs

@@ -1,3 +1,5 @@
+using System.Diagnostics;
+using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Controls.Primitives;
 using Avalonia.Input;
@@ -8,8 +10,6 @@ namespace Ursa.Controls;
 
 public class AutoCompleteBox: Avalonia.Controls.AutoCompleteBox, IClearControl
 {
-    // protected override Type StyleKeyOverride { get; } = typeof(Avalonia.Controls.AutoCompleteBox);
-    private TextBox? _text;
     static AutoCompleteBox()
     {
         MinimumPrefixLengthProperty.OverrideDefaultValue<AutoCompleteBox>(0);
@@ -17,13 +17,7 @@ public class AutoCompleteBox: Avalonia.Controls.AutoCompleteBox, IClearControl
 
     public AutoCompleteBox()
     {
-        this.AddHandler(PointerPressedEvent, OnBoxPointerPressed, RoutingStrategies.Tunnel);
-    }
-
-    protected override void OnApplyTemplate(TemplateAppliedEventArgs e)
-    {
-        base.OnApplyTemplate(e);
-        _text = e.NameScope.Get<TextBox>("PART_TextBox");
+        AddHandler(PointerPressedEvent, OnBoxPointerPressed, RoutingStrategies.Tunnel);
     }
     
     private void OnBoxPointerPressed(object? sender, PointerPressedEventArgs e)
@@ -37,6 +31,7 @@ public class AutoCompleteBox: Avalonia.Controls.AutoCompleteBox, IClearControl
     protected override void OnGotFocus(GotFocusEventArgs e)
     {
         base.OnGotFocus(e);
+        if (IsDropDownOpen) return;
         SetCurrentValue(IsDropDownOpenProperty, true);
     }
 

tests/HeadlessTest.Ursa/Controls/AutoCompleteBoxTests/Tests.cs

@@ -0,0 +1,100 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Headless;
+using Avalonia.Headless.XUnit;
+using Avalonia.Input;
+using Avalonia.Layout;
+using UrsaControl = Ursa.Controls;
+
+namespace HeadlessTest.Ursa.Controls.AutoCompleteBoxTests;
+
+public class Tests
+{
+    [AvaloniaFact]
+    // Ideally Should not open popup when there is no items, but sub class have no access to this status. 
+    public void AutoCompleteBox_Focus_And_LostFocus()
+    {
+        var window = new Window();
+        var autoCompleteBox = new UrsaControl.AutoCompleteBox()
+        {
+            HorizontalAlignment = HorizontalAlignment.Left,
+            VerticalAlignment = VerticalAlignment.Top,
+            Width = 100,
+            Height = 100,
+        };
+        var textBox = new TextBox()
+        {
+            Width = 100, Height = 100,
+        };
+        window.Content = new StackPanel()
+        {
+            Children = { autoCompleteBox, textBox }
+        };
+        window.Show();
+        
+        Assert.False(autoCompleteBox.IsDropDownOpen);
+        autoCompleteBox.Focus();
+        Assert.True(autoCompleteBox.IsDropDownOpen);
+        textBox.Focus();
+        Assert.False(autoCompleteBox.IsDropDownOpen);
+    }
+    
+    [AvaloniaFact]
+    public void Click_AutoCompleteBox_With_Mouse_Should_Open_Dropdown()
+    {
+        var window = new Window();
+        var autoCompleteBox = new UrsaControl.AutoCompleteBox()
+        {
+            HorizontalAlignment = HorizontalAlignment.Left,
+            VerticalAlignment = VerticalAlignment.Top,
+            Width = 100,
+            Height = 100,
+            ItemsSource = new List<string> {"Hello", "World"}
+        };
+        window.Content = autoCompleteBox;
+        window.Show();
+        
+        Assert.False(autoCompleteBox.IsDropDownOpen);
+        window.MouseDown(new Point(10, 10), MouseButton.Left);
+        Assert.True(autoCompleteBox.IsDropDownOpen);
+    }
+    
+    [AvaloniaFact]
+    public void Click_AutoCompleteBox_With_Mouse_Should_NotOpen_Dropdown_When_Empty()
+    {
+        var window = new Window();
+        var autoCompleteBox = new UrsaControl.AutoCompleteBox()
+        {
+            HorizontalAlignment = HorizontalAlignment.Left,
+            VerticalAlignment = VerticalAlignment.Top,
+            Width = 100,
+            Height = 100,
+        };
+        window.Content = autoCompleteBox;
+        window.Show();
+        
+        Assert.False(autoCompleteBox.IsDropDownOpen);
+        window.MouseDown(new Point(10, 10), MouseButton.Left);
+        Assert.False(autoCompleteBox.IsDropDownOpen);
+    }
+    
+    [AvaloniaFact]
+    public void Right_Click_AutoCompleteBox_With_Mouse_Should_NotOpen_Dropdown()
+    {
+        var window = new Window();
+        var autoCompleteBox = new UrsaControl.AutoCompleteBox()
+        {
+            HorizontalAlignment = HorizontalAlignment.Left,
+            VerticalAlignment = VerticalAlignment.Top,
+            Width = 100,
+            Height = 100,
+            ItemsSource = new List<string> {"Hello", "World"},
+        };
+        window.Content = autoCompleteBox;
+        window.Show();
+        
+        Assert.False(autoCompleteBox.IsDropDownOpen);
+        window.MouseDown(new Point(10, 10), MouseButton.Right);
+        Assert.False(autoCompleteBox.IsDropDownOpen);
+    }
+}

tests/Test.Ursa/AutoCompleteBoxTests/Tests.cs

@@ -0,0 +1,20 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Controls.Primitives;
+using Avalonia.Input;
+using Avalonia.Remote.Protocol.Input;
+using AutoCompleteBox = Ursa.Controls.AutoCompleteBox;
+
+namespace Test.Ursa.AutoCompleteBoxTests;
+
+public class Tests
+{
+    [Fact]
+    public void Clear_SetsSelectedItemToNull()
+    {
+        var autoCompleteBox = new AutoCompleteBox();
+        autoCompleteBox.SelectedItem = "TestItem";
+        autoCompleteBox.Clear();
+        Assert.Null(autoCompleteBox.SelectedItem);
+    }
+}