diff --git a/scenes/StreamContainer.cs b/scenes/StreamContainer.cs
index f9e52d1..8227dcc 100644
--- a/scenes/StreamContainer.cs
+++ b/scenes/StreamContainer.cs
@@ -14,7 +14,7 @@ public class StreamContainer : Spatial
     private MeshInstance _bounds;
     private Spatial _activeTiles;
     private Queue<HexTile3D> _unusedTiles;
-    private TileWorld _tileWorld;
+    public TileWorld TileWorld;
     private MultiMeshInstance _tileMultiMesh;
 
     // resources
@@ -47,7 +47,7 @@ public class StreamContainer : Spatial
 
     public void SetWorld(TileWorld tileWorld)
     {
-        _tileWorld = tileWorld;
+        TileWorld = tileWorld;
     }
     
     // Called when the node enters the scene tree for the first time.
@@ -71,7 +71,7 @@ public class StreamContainer : Spatial
         boundsTransform = boundsTransform.Scaled(new Vector3(Dimensions.x, 1, Dimensions.y));
         _bounds.Transform = boundsTransform;
 
-        _tileWorld = GetNode<TileWorld>(World);
+        TileWorld = GetNode<TileWorld>(World);
     }
 
 
@@ -186,9 +186,9 @@ public class StreamContainer : Spatial
                 {
                     HexTile3D tile3D = _unusedTiles.Dequeue();
                     tile3D.OffsetCoords = coord;
-                    tile3D.Type = _tileWorld.GetTileTypeAtOffset(coord);
+                    tile3D.Type = TileWorld.GetTileTypeAtOffset(coord);
                     Transform tileTransform = tile3D.Transform;
-                    tileTransform.origin.y = _tileWorld.GetHeightAtOffset(coord);
+                    tileTransform.origin.y = TileWorld.GetHeightAtOffset(coord);
                     tile3D.Transform = tileTransform;
                     
                     OnTileActivate(tile3D);
@@ -217,9 +217,9 @@ public class StreamContainer : Spatial
             }
             
             Transform tileTransform = tile3D.Transform;
-            tileTransform.origin.y = _tileWorld.GetHeightAtOffset(offsetCoords);
+            tileTransform.origin.y = TileWorld.GetHeightAtOffset(offsetCoords);
             tile3D.Transform = tileTransform;
-            tile3D.Type = _tileWorld.GetTileTypeAtOffset(offsetCoords);
+            tile3D.Type = TileWorld.GetTileTypeAtOffset(offsetCoords);
 
             _tileToInstanceIndex[tile3D] = _tileToInstanceIndex.Count;
             
@@ -291,7 +291,7 @@ public class StreamContainer : Spatial
             }
 
             Transform tileTransform = tile.GlobalTransform;
-            tileTransform.origin.y = _tileWorld.GetHeightAtOffset(tile.OffsetCoords);
+            tileTransform.origin.y = TileWorld.GetHeightAtOffset(tile.OffsetCoords);
             tile.GlobalTransform = tileTransform;
             
             OnTileActivate(tile);
diff --git a/tests/StreamContainerTests.cs b/tests/StreamContainerTests.cs
new file mode 100644
index 0000000..0ad7715
--- /dev/null
+++ b/tests/StreamContainerTests.cs
@@ -0,0 +1,60 @@
+using System;
+using Godot;
+using GodotComponentTest.utils;
+using GoDotTest;
+using Xunit;
+
+namespace GodotComponentTest.tests;
+
+public class StreamContainerTests : TestClass
+{
+    private Node _testScene = null;
+    private TileWorld _tileWorld;
+    private StreamContainer _streamContainer;
+    
+    private PackedScene _tileWorldScene = GD.Load<PackedScene>("res://scenes/TileWorld.tscn");
+    private PackedScene _streamContainerScene = GD.Load<PackedScene>("res://scenes/StreamContainer.tscn");
+    
+    public StreamContainerTests(Node testScene) : base(testScene)
+    {
+        _testScene = testScene;
+    }
+
+    [Setup]
+    public void Setup()
+    {
+        _tileWorld = (TileWorld) _tileWorldScene.Instance();
+        _tileWorld.HexGrid = new HexGrid();
+        _testScene.AddChild(_tileWorld);
+        _streamContainer = (StreamContainer) _streamContainerScene.Instance();
+
+        foreach (Node node in _testScene.GetChildren())
+        {
+            if (node is TileWorld)
+            {
+                _streamContainer.World = node.GetPath();
+            }
+        }
+
+        _testScene.AddChild(_streamContainer);
+    }
+
+    [Cleanup]
+    public void Cleanup()
+    {
+        foreach (Node node in _testScene.GetChildren())
+        {
+            node.QueueFree();
+        }
+        
+        _streamContainer.QueueFree();
+        _tileWorld.QueueFree();
+    }
+
+    [Test]
+    public void Plane2DDistSimple()
+    {
+//        _streamContainer.UpdateRects(new Vector2(0, 0));
+//        _streamContainer.UpdateRects(new Vector2(1, 0));
+    }
+}
\ No newline at end of file