norm is ok

src/unittest.scad

@@ -7,11 +7,8 @@ module assertEqualPoint(expected, actual, epsilon = 0.0001) {
         str("expected length: ", leng_expected, ", but: ", leng_actual)
     );
 
-    v_diff = expected - actual;
-    v3d = len(v_diff) == 2 ? [v_diff[0], v_diff[1], 0] : v_diff; 
-
     assert(
-        abs(v3d[0]) <= epsilon && abs(v3d[1]) <= epsilon && abs(v3d[2]) <= epsilon,
+        norm(expected - actual) <= epsilon,
         str("expected: ", expected, ", but: ", actual)
     );
 }