Initial migration to the new 2dog project project structure

CyberBits.Tests/BasicTests.cs

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+using Godot;
+using twodog.xunit;
+
+namespace CyberBits.Tests;
+
+[Collection("GodotHeadless")]
+public class BasicTests(GodotHeadlessFixture godot)
+{
+    [Fact]
+    public void LoadMainScene_Succeeds()
+    {
+        // Arrange
+        var scene = GD.Load<PackedScene>("res://main.tscn");
+        
+        // Act
+        var instance = scene.Instantiate();
+        godot.Tree.Root.AddChild(instance);
+        
+        // Assert
+        Assert.NotNull(instance);
+        Assert.NotNull(instance.GetParent());
+    }
+    
+    [Fact]
+    public void PhysicsIteration_Succeeds()
+    {
+        // Arrange & Act
+        godot.Tree.Root.PhysicsInterpolationMode = Node.PhysicsInterpolationModeEnum.Off;
+        godot.GodotInstance.Iteration();
+
+        // Assert - if we get here without crashing, test passes
+        Assert.True(true);
+    }
+
+    [Fact]
+    public void CreateNode_AddsToTree()
+    {
+        // Arrange
+        var node = new Node();
+        node.Name = "TestNode";
+
+        // Act
+        godot.Tree.Root.AddChild(node);
+
+        // Assert
+        Assert.True(godot.Tree.Root.HasNode("TestNode"));
+        Assert.Equal("TestNode", (string)godot.Tree.Root.GetNode("TestNode").Name);
+
+        // Cleanup
+        node.QueueFree();
+    }
+}

CyberBits.Tests/CyberBits.Tests.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+        <IsPackable>false</IsPackable>
+    </PropertyGroup>
+
+    <!-- 2dog packages -->
+    <ItemGroup>
+        <PackageReference Include="2dog" Version="0.1.23-pre"/>
+        <PackageReference Include="2dog.xunit" Version="0.1.23-pre"/>
+        <PackageReference Include="GodotSharp" Version="4.6.2"/>
+    </ItemGroup>
+
+    <!-- Platform-specific native library packages -->
+    <ItemGroup Condition="$([MSBuild]::IsOSPlatform('Windows'))">
+        <PackageReference Include="2dog.win-x64" Version="4.6.2.0"/>
+    </ItemGroup>
+    <ItemGroup Condition="$([MSBuild]::IsOSPlatform('Linux'))">
+        <PackageReference Include="2dog.linux-x64" Version="4.6.2.0"/>
+    </ItemGroup>
+    <ItemGroup Condition="$([MSBuild]::IsOSPlatform('OSX'))">
+        <PackageReference Include="2dog.osx-arm64" Version="4.6.2.0"/>
+    </ItemGroup>
+
+    <!-- Test framework packages -->
+    <ItemGroup>
+        <PackageReference Include="coverlet.collector" Version="6.0.2"/>
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0"/>
+        <PackageReference Include="xunit" Version="2.9.2"/>
+        <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2"/>
+    </ItemGroup>
+
+    <ItemGroup>
+        <Using Include="Xunit"/>
+    </ItemGroup>
+
+    <ItemGroup>
+        <Content Include="xunit.runner.json" CopyToOutputDirectory="PreserveNewest"/>
+    </ItemGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="../CyberBits.Godot/CyberBits.Godot.csproj"/>
+    </ItemGroup>
+
+    <!-- Godot project location -->
+    <PropertyGroup>
+        <GodotProjectDir>../CyberBits.Godot</GodotProjectDir>
+    </PropertyGroup>
+
+    <!-- Remove duplicate Godot.SourceGenerators that come from GodotSharp package
+         (2dog package already embeds them) -->
+    <Target Name="RemoveDuplicateGodotAnalyzers" BeforeTargets="CoreCompile">
+        <ItemGroup>
+            <Analyzer Remove="@(Analyzer)" Condition="$([System.String]::Copy('%(Analyzer.Identity)').Contains('Godot.SourceGenerators'))" />
+        </ItemGroup>
+    </Target>
+</Project>

CyberBits.Tests/GodotHeadlessCollection.cs

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+using twodog.xunit;
+using Xunit;
+
+namespace CyberBits.Tests;
+
+[CollectionDefinition("GodotHeadless", DisableParallelization = true)]
+public class GodotHeadlessCollection : ICollectionFixture<GodotHeadlessFixture>;

CyberBits.Tests/xunit.runner.json

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+{
+  "$schema": "https://xunit.net/schema/current/xunit.runner.schema.json",
+  "parallelizeTestCollections": false
+}