Initial migration to the new 2dog project project structure

CyberBits.Tests/BasicTests.cs

@@ -0,0 +1,52 @@
+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();
+    }
+}