test: 添加测试项目

Test/MainWindow.axaml.cs

@@ -0,0 +1,23 @@
+using System.Globalization;
+using Avalonia.Controls;
+using Avalonia.Interactivity;
+
+namespace Test;
+
+public partial class MainWindow : Window
+{
+    public MainWindow()
+    {
+        InitializeComponent();
+    }
+
+    private void ChangeToEnglishButton_OnClick(object? sender, RoutedEventArgs e)
+    {
+        App.I18NManager.Culture = new CultureInfo("en-US");
+    }
+
+    private void ChangeToDefaultButton_OnClick(object? sender, RoutedEventArgs e)
+    {
+        App.I18NManager.Culture = CultureInfo.InvariantCulture;
+    }
+}