PostIt testing setup

src/PostIt.Tests/PostIt.Tests.csproj

@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+    <RootNamespace>PostIt.Tests</RootNamespace>
+    <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
+  </PropertyGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" />
+    <PackageReference Include="xunit.v3" />
+    <PackageReference Include="xunit.runner.visualstudio" />
+    <PackageReference Include="coverlet.collector" />
+    <PackageReference Include="Avalonia.Headless" />
+    <PackageReference Include="Avalonia.Headless.XUnit" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\PostIt\PostIt\PostIt.csproj" />
+  </ItemGroup>
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+</Project>

src/PostIt.Tests/TestApp.cs

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+using Avalonia;
+using Avalonia.Headless;
+
+[assembly: AvaloniaTestApplication(typeof(PostIt.Tests.TestAppBuilder))]
+
+namespace PostIt.Tests;
+
+public class TestAppBuilder
+{
+    public static AppBuilder BuildAvaloniaApp() =>
+        AppBuilder.Configure<PostIt.App>()
+        .UseHeadless(new AvaloniaHeadlessPlatformOptions
+            {
+                UseHeadlessDrawing = true
+            });
+}

src/PostIt.Tests/UnitTest1.cs

@@ -0,0 +1,16 @@
+using Avalonia.Headless.XUnit;
+using Avalonia.Controls;
+using PostIt.Views;
+
+namespace PostIt.Tests;
+
+public class MainPageTests
+{
+    [AvaloniaFact]
+    public void MainPage_Should_Load()
+    {
+        var window = new MainWindow();
+        window.Show();
+        Assert.NotNull(window);
+    }
+}

src/PostIt/PostIt/App.axaml.cs

@@ -1,12 +1,8 @@
 using Avalonia;
 using Avalonia.Controls.ApplicationLifetimes;
-using Avalonia.Data.Core;
-using Avalonia.Data.Core.Plugins;
-using System.Linq;
 using Avalonia.Markup.Xaml;
 using PostIt.ViewModels;
 using PostIt.Views;
-using Avalonia.Controls;
 
 namespace PostIt;