diff --git a/test/test_all.scad b/test/test_all.scad
index 08e55a98..9213a1fb 100644
--- a/test/test_all.scad
+++ b/test/test_all.scad
@@ -11,6 +11,7 @@ include <test_rounded_cylinder.scad>;
 include <test_crystal_ball.scad>;
 include <test_line3d.scad>;
 include <test_polyline3d.scad>;
+include <test_hull_polyline3d.scad>;
 
 // Function
 include <test_paths2sections.scad>;
diff --git a/test/test_hull_polyline3d.scad b/test/test_hull_polyline3d.scad
new file mode 100644
index 00000000..95811be6
--- /dev/null
+++ b/test/test_hull_polyline3d.scad
@@ -0,0 +1,61 @@
+include <unittest.scad>;
+
+module test_hull_polyline3d() {
+    echo("==== test_hull_polyline3d ===="); 
+
+    points = [
+        [1, 2, 3], 
+        [4, -5, -6], 
+        [-1, -3, -5], 
+        [0, 0, 0]
+    ];
+        
+    thickness = 1;
+            
+    include <hull_polyline3d.scad>;
+    
+    module test_line_segment(index, point1, point2, radius) {
+        assertEqualPoint(points[index - 1], point1);
+        assertEqualPoint(points[index], point2);
+        assertEqual(thickness, radius * 2);    
+    } 
+    
+    hull_polyline3d(
+        points = points, 
+        thickness = thickness, 
+        $fn = 3
+    );
+}
+
+module test_hull_polyline3d_helix() {
+    echo("==== test_hull_polyline3d_helix ===="); 
+
+    r = 50;
+    points = [
+        for(a = [0:180]) 
+            [
+               r * cos(-90 + a) * cos(a), 
+               r * cos(-90 + a) * sin(a), 
+               r * sin(-90 + a)
+            ]
+    ];
+        
+    thickness = 12;
+            
+    include <hull_polyline3d.scad>;
+    
+    module test_line_segment(index, point1, point2, radius) {
+        assertEqualPoint(points[index - 1], point1);
+        assertEqualPoint(points[index], point2);
+        assertEqual(thickness, radius * 2);    
+    } 
+    
+    for(i = [0:7]) {
+        rotate(45 * i) 
+            hull_polyline3d(points, thickness, $fn = 3);
+    }
+
+}
+
+test_hull_polyline3d();
+test_hull_polyline3d_helix();
\ No newline at end of file