Add test for topology calulation for two cubes connecting in one edge.

test/tests/modelutils_test.js

@@ -163,4 +163,10 @@ describe ('Model Utils', function () {
             assert.strictEqual (topology.edges[i].triangles.length, 2);
         }
     });
+
+    it ('Two Cubes Connection in One Edge Topology Calculation', function () {
+        const model = testUtils.GetTwoCubesConnectingInOneEdgeModel ();
+        let topology = OV.GetTopology (model);
+        assert.strictEqual (topology.vertices.length, 14);
+    });    
 });

test/utils/testutils.js

@@ -163,6 +163,23 @@ module.exports =
         return cube;
     },
 
+    GetTwoCubesConnectingInOneEdgeModel ()
+    {
+        let model = new OV.Model ();
+
+        let cube1 = this.GetCubeMesh ();
+        model.AddMesh (cube1);
+        
+        let cube2 = this.GetCubeMesh ();
+        let matrix = new OV.Matrix ().CreateTranslation (1.0, 0.0, 1.0);
+        let transformation = new OV.Transformation (matrix);
+        OV.TransformMesh (cube2, transformation);
+        model.AddMesh (cube2);
+
+        OV.FinalizeModel (model, function () { new OV.Material () });
+        return model;
+    },
+
     GetCubeWithOneMissingFaceMesh ()
     {
         var cube = new OV.Mesh ();