From ad19ccbcfa72cccc2f5b83d92bb55bd8fca3a765 Mon Sep 17 00:00:00 2001
From: Paul Schneider <paul@pschneider.fr>
Date: Fri, 19 Jun 2026 16:55:42 +0100
Subject: [PATCH] PostIt testing setup

---
 Directory.Packages.props             |  6 ++++--
 src/PostIt.Tests/PostIt.Tests.csproj | 24 ++++++++++++++++++++++++
 src/PostIt.Tests/TestApp.cs          | 16 ++++++++++++++++
 src/PostIt.Tests/UnitTest1.cs        | 16 ++++++++++++++++
 src/PostIt/PostIt/App.axaml.cs       |  4 ----
 test/yavscTests/yavscTests.csproj    |  7 ++-----
 yavsc.sln                            | 15 +++++++++++++++
 7 files changed, 77 insertions(+), 11 deletions(-)
 create mode 100644 src/PostIt.Tests/PostIt.Tests.csproj
 create mode 100644 src/PostIt.Tests/TestApp.cs
 create mode 100644 src/PostIt.Tests/UnitTest1.cs

diff --git a/Directory.Packages.props b/Directory.Packages.props
index 3d89052f..c9da2489 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -12,12 +12,14 @@
     <PackageVersion Include="Avalonia.Browser" Version="12.0.4" />
     <PackageVersion Include="Avalonia.Desktop" Version="12.0.4" />
     <PackageVersion Include="Avalonia.Fonts.Inter" Version="12.0.4" />
+    <PackageVersion Include="Avalonia.Headless" Version="12.0.4" />
+    <PackageVersion Include="Avalonia.Headless.XUnit" Version="12.0.4" />
     <PackageVersion Include="Avalonia.Themes.Fluent" Version="12.0.4" />
     <PackageVersion Include="AvaloniaUI.DiagnosticsSupport" Version="2.2.2" />
     <PackageVersion Include="CommunityToolkit.Mvvm" Version="8.4.2" />
     <PackageVersion Include="coverlet.collector" Version="10.0.1" />
     <PackageVersion Include="Google.Apis.Calendar.v3" Version="1.74.0.4154" />
-    <PackageVersion Include="Google.Apis.Compute.v1" Version="1.75.0.4157" />
+    <PackageVersion Include="Google.Apis.Compute.v1" Version="1.75.0.4167" />
     <PackageVersion Include="HigginsSoft.IdentityServer8" Version="8.0.5-preview-net9" />
     <PackageVersion Include="HigginsSoft.IdentityServer8.AspNetIdentity" Version="8.0.5-preview-net9" />
     <PackageVersion Include="HigginsSoft.IdentityServer8.EntityFramework" Version="8.0.5-preview-net9" />
@@ -70,8 +72,8 @@
     <PackageVersion Include="System.IdentityModel.Tokens.Jwt" Version="8.19.1" />
     <PackageVersion Include="System.Security.Cryptography.Pkcs" Version="10.0.9" />
     <PackageVersion Include="Xamarin.AndroidX.Core.SplashScreen" Version="1.2.0" />
-    <PackageVersion Include="xunit" Version="2.9.3" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.5" />
+    <PackageVersion Include="xunit.v3" Version="3.2.2" />
     <PackageVersion Include="YamlDotNet" Version="18.0.0" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/PostIt.Tests/PostIt.Tests.csproj b/src/PostIt.Tests/PostIt.Tests.csproj
new file mode 100644
index 00000000..10d5e16e
--- /dev/null
+++ b/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>
\ No newline at end of file
diff --git a/src/PostIt.Tests/TestApp.cs b/src/PostIt.Tests/TestApp.cs
new file mode 100644
index 00000000..0c52c649
--- /dev/null
+++ b/src/PostIt.Tests/TestApp.cs
@@ -0,0 +1,16 @@
+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
+            });
+}
\ No newline at end of file
diff --git a/src/PostIt.Tests/UnitTest1.cs b/src/PostIt.Tests/UnitTest1.cs
new file mode 100644
index 00000000..96990865
--- /dev/null
+++ b/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);
+    }
+}
\ No newline at end of file
diff --git a/src/PostIt/PostIt/App.axaml.cs b/src/PostIt/PostIt/App.axaml.cs
index 66592224..8e895196 100644
--- a/src/PostIt/PostIt/App.axaml.cs
+++ b/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;
 
diff --git a/test/yavscTests/yavscTests.csproj b/test/yavscTests/yavscTests.csproj
index 623b3532..c0e12e10 100644
--- a/test/yavscTests/yavscTests.csproj
+++ b/test/yavscTests/yavscTests.csproj
@@ -21,7 +21,7 @@
     <PackageReference Include="Microsoft.Extensions.Caching.Memory" />
     <PackageReference Include="Microsoft.Extensions.Options" />
     <PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" />
-    <PackageReference Include="xunit" />
+    <PackageReference Include="xunit.v3" />
     <PackageReference Include="xunit.runner.visualstudio" />
   </ItemGroup>
   <ItemGroup>
@@ -47,9 +47,6 @@
     <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" />
   </ItemGroup>
   <Target Name="CopyStaticWebAssetsManifest" AfterTargets="Build">
-    <Copy SourceFiles="$(OutDir)Yavsc.Org.staticwebassets.endpoints.json"
-          DestinationFiles="$(OutDir)testhost.staticwebassets.endpoints.json"
-          SkipUnchangedFiles="true"
-          Condition="Exists('$(OutDir)Yavsc.Org.staticwebassets.endpoints.json')" />
+    <Copy SourceFiles="$(OutDir)Yavsc.Org.staticwebassets.endpoints.json" DestinationFiles="$(OutDir)testhost.staticwebassets.endpoints.json" SkipUnchangedFiles="true" Condition="Exists('$(OutDir)Yavsc.Org.staticwebassets.endpoints.json')" />
   </Target>
 </Project>
\ No newline at end of file
diff --git a/yavsc.sln b/yavsc.sln
index cd6de416..19563b13 100644
--- a/yavsc.sln
+++ b/yavsc.sln
@@ -33,6 +33,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PostIt.Browser", "src\PostI
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PostIt.Desktop", "src\PostIt\PostIt.Desktop\PostIt.Desktop.csproj", "{EFE24256-9335-44C5-8B77-E180C2DB3C0B}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PostIt.Tests", "src\PostIt.Tests\PostIt.Tests.csproj", "{4D283324-6DD3-4CD1-9893-8C317772C6B5}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -187,6 +189,18 @@ Global
 		{EFE24256-9335-44C5-8B77-E180C2DB3C0B}.Release|x64.Build.0 = Release|Any CPU
 		{EFE24256-9335-44C5-8B77-E180C2DB3C0B}.Release|x86.ActiveCfg = Release|Any CPU
 		{EFE24256-9335-44C5-8B77-E180C2DB3C0B}.Release|x86.Build.0 = Release|Any CPU
+		{4D283324-6DD3-4CD1-9893-8C317772C6B5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4D283324-6DD3-4CD1-9893-8C317772C6B5}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4D283324-6DD3-4CD1-9893-8C317772C6B5}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{4D283324-6DD3-4CD1-9893-8C317772C6B5}.Debug|x64.Build.0 = Debug|Any CPU
+		{4D283324-6DD3-4CD1-9893-8C317772C6B5}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{4D283324-6DD3-4CD1-9893-8C317772C6B5}.Debug|x86.Build.0 = Debug|Any CPU
+		{4D283324-6DD3-4CD1-9893-8C317772C6B5}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4D283324-6DD3-4CD1-9893-8C317772C6B5}.Release|Any CPU.Build.0 = Release|Any CPU
+		{4D283324-6DD3-4CD1-9893-8C317772C6B5}.Release|x64.ActiveCfg = Release|Any CPU
+		{4D283324-6DD3-4CD1-9893-8C317772C6B5}.Release|x64.Build.0 = Release|Any CPU
+		{4D283324-6DD3-4CD1-9893-8C317772C6B5}.Release|x86.ActiveCfg = Release|Any CPU
+		{4D283324-6DD3-4CD1-9893-8C317772C6B5}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -205,5 +219,6 @@ Global
 		{4C092CF8-524A-494D-AAFC-69383DFBA31D} = {E13D107F-4053-D0DE-6394-453609595BFE}
 		{AF96C1C4-D128-4CD7-A8BB-D194E6D270F0} = {E13D107F-4053-D0DE-6394-453609595BFE}
 		{EFE24256-9335-44C5-8B77-E180C2DB3C0B} = {E13D107F-4053-D0DE-6394-453609595BFE}
+		{4D283324-6DD3-4CD1-9893-8C317772C6B5} = {CDB1BDB5-53F9-4B43-864F-60F2E74F44E2}
 	EndGlobalSection
 EndGlobal