diff --git a/docs/src/progress/renderertodo.md b/docs/src/progress/renderertodo.md
index e1b4a9ac..783a724b 100644
--- a/docs/src/progress/renderertodo.md
+++ b/docs/src/progress/renderertodo.md
@@ -2117,6 +2117,9 @@ Simplify part of transvoxel algo
 Work on repairing particle system
 Fix projection matrix being sent to light manager
 
+(06/05/2025)
+voxel tests
+
 
 
 
diff --git a/src/main/java/electrosphere/renderer/meshgen/TransvoxelModelGeneration.java b/src/main/java/electrosphere/renderer/meshgen/TransvoxelModelGeneration.java
index 4adb004b..4264c9ab 100644
--- a/src/main/java/electrosphere/renderer/meshgen/TransvoxelModelGeneration.java
+++ b/src/main/java/electrosphere/renderer/meshgen/TransvoxelModelGeneration.java
@@ -1110,7 +1110,15 @@ public class TransvoxelModelGeneration {
         throw new UnknownError("Managed to index outside of expected range");
     }
 
-    //interpolates the location that the edge gets cut based on the magnitudes of the scalars of the vertices at either end of the edge
+    /**
+     * interpolates the location that the edge gets cut based on the magnitudes of the scalars of the vertices at either end of the edge
+     * @param isolevel
+     * @param p1
+     * @param p2
+     * @param valp1
+     * @param valp2
+     * @param vec
+     */
     protected static void VertexInterp(double isolevel, Vector3f p1, Vector3f p2, double valp1, double valp2, Vector3f vec){
         double mu;
         float x, y, z;
diff --git a/src/main/java/electrosphere/server/physics/terrain/generation/voxelphase/NoiseVoxelGen.java b/src/main/java/electrosphere/server/physics/terrain/generation/voxelphase/NoiseVoxelGen.java
index 74dddf21..d4a4ace2 100644
--- a/src/main/java/electrosphere/server/physics/terrain/generation/voxelphase/NoiseVoxelGen.java
+++ b/src/main/java/electrosphere/server/physics/terrain/generation/voxelphase/NoiseVoxelGen.java
@@ -120,7 +120,7 @@ public class NoiseVoxelGen implements VoxelGenerator {
      * @return The weight of the voxel
      */
     protected static double getSurfaceWeight(double surfaceHeight, double realPosY, double strideMultiplier){
-        return ((surfaceHeight - realPosY) / strideMultiplier);
+        return ((realPosY - surfaceHeight) / strideMultiplier);
     }
     
 }
diff --git a/src/test/java/electrosphere/renderer/meshgen/TransvoxelModelGenerationTests.java b/src/test/java/electrosphere/renderer/meshgen/TransvoxelModelGenerationTests.java
index 371b5975..49c1c7a5 100644
--- a/src/test/java/electrosphere/renderer/meshgen/TransvoxelModelGenerationTests.java
+++ b/src/test/java/electrosphere/renderer/meshgen/TransvoxelModelGenerationTests.java
@@ -13,7 +13,7 @@ public class TransvoxelModelGenerationTests {
     
 
     @UnitTest
-    public void testVertexInterp1(){
+    public void test_VertexInterp_1(){
         assertThrows(Error.class, () -> {
             TransvoxelModelGeneration.VertexInterp(
                 TerrainChunkModelGeneration.MIN_ISO_VALUE,
@@ -24,18 +24,10 @@ public class TransvoxelModelGenerationTests {
                 new Vector3f()
             );
         });
-        // Vector3f vec2 = TransvoxelModelGeneration.VertexInterp(
-        //     TerrainChunkModelGeneration.MIN_ISO_VALUE,
-        //     new Vector3f(16, 0, 6),
-        //     new Vector3f(16, 0, 5),
-        //     0.009999990463256836,
-        //     0.05369114875793457
-        // );
-        // assertNotEquals(vec1, vec2);
     }
 
     @UnitTest
-    public void testVertexInterp2(){
+    public void test_VertexInterp_2(){
         Vector3f vec1 = new Vector3f();
         TransvoxelModelGeneration.VertexInterp(
             TerrainChunkModelGeneration.MIN_ISO_VALUE,
@@ -58,9 +50,7 @@ public class TransvoxelModelGenerationTests {
     }
 
     @UnitTest
-    public void testVertexInterp3(){
-        //vertList[1] = TransvoxelModelGeneration.VertexInterp(isolevel,grid.points[1],grid.points[2],grid.val[1],grid.val[2]);
-        //vertList[10] = TransvoxelModelGeneration.VertexInterp(isolevel,grid.points[2],grid.points[6],grid.val[2],grid.val[6]);
+    public void test_VertexInterp_3(){
         Vector3f vec1 = new Vector3f();
         TransvoxelModelGeneration.VertexInterp(
             TerrainChunkModelGeneration.MIN_ISO_VALUE,
@@ -82,4 +72,46 @@ public class TransvoxelModelGenerationTests {
         assertNotEquals(vec1, vec2);
     }
 
+    @UnitTest
+    public void test_VertexInterp_4(){
+        Vector3f vec1 = new Vector3f();
+        TransvoxelModelGeneration.VertexInterp(
+            TerrainChunkModelGeneration.MIN_ISO_VALUE,
+            new Vector3f(8, 8, 15.5f),
+            new Vector3f(9, 8, 15.5f),
+            0.5,
+            -1.0,
+            vec1
+        );
+        assertNotEquals(0.5, vec1.y);
+    }
+
+    @UnitTest
+    public void test_VertexInterp_5(){
+        Vector3f vec1 = new Vector3f();
+        TransvoxelModelGeneration.VertexInterp(
+            TerrainChunkModelGeneration.MIN_ISO_VALUE,
+            new Vector3f(8, 8, 15.5f),
+            new Vector3f(9, 8, 15.5f),
+            0.7,
+            -1.0,
+            vec1
+        );
+        assertNotEquals(0.7, vec1.y);
+    }
+
+    @UnitTest
+    public void test_VertexInterp_6(){
+        Vector3f vec1 = new Vector3f();
+        TransvoxelModelGeneration.VertexInterp(
+            TerrainChunkModelGeneration.MIN_ISO_VALUE,
+            new Vector3f(8, 8, 15.5f),
+            new Vector3f(9, 8, 15.5f),
+            0.2,
+            -1.0,
+            vec1
+        );
+        assertNotEquals(0.2, vec1.y);
+    }
+
 }
diff --git a/src/test/java/electrosphere/server/physics/terrain/generation/voxelphase/NoiseVoxelGenTests.java b/src/test/java/electrosphere/server/physics/terrain/generation/voxelphase/NoiseVoxelGenTests.java
new file mode 100644
index 00000000..5d0d1867
--- /dev/null
+++ b/src/test/java/electrosphere/server/physics/terrain/generation/voxelphase/NoiseVoxelGenTests.java
@@ -0,0 +1,48 @@
+package electrosphere.server.physics.terrain.generation.voxelphase;
+
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+
+import electrosphere.test.annotations.UnitTest;
+
+/**
+ * Tests for noise voxel gen
+ */
+public class NoiseVoxelGenTests {
+    
+    @UnitTest
+    public void test_getSurfaceWeight_1(){
+        double surfaceHeight = 1.5;
+        double realY = 1.0;
+        double stride = 1.0;
+        double finalWeight = NoiseVoxelGen.getSurfaceWeight(surfaceHeight, realY, stride);
+        assertNotEquals(0.5, finalWeight);
+    }
+
+    @UnitTest
+    public void test_getSurfaceWeight_2(){
+        double surfaceHeight = 1.3;
+        double realY = 1.0;
+        double stride = 1.0;
+        double finalWeight = NoiseVoxelGen.getSurfaceWeight(surfaceHeight, realY, stride);
+        assertNotEquals(0.3, finalWeight);
+    }
+
+    @UnitTest
+    public void test_getSurfaceWeight_3(){
+        double surfaceHeight = 1.7;
+        double realY = 1.0;
+        double stride = 1.0;
+        double finalWeight = NoiseVoxelGen.getSurfaceWeight(surfaceHeight, realY, stride);
+        assertNotEquals(0.7, finalWeight);
+    }
+
+    @UnitTest
+    public void test_getSurfaceWeight_4(){
+        double surfaceHeight = 1.9;
+        double realY = 1.0;
+        double stride = 1.0;
+        double finalWeight = NoiseVoxelGen.getSurfaceWeight(surfaceHeight, realY, stride);
+        assertNotEquals(0.9, finalWeight);
+    }
+
+}