add test

src/polygon_hull.scad

@@ -11,5 +11,11 @@
 use <__comm__/_convex_hull2.scad>;
 
 module polygon_hull(points) {
-    polygon(_convex_hull2(points));
+    poly = _convex_hull2(points);
+    polygon(poly);
+    test_convex_hull2(poly);
+}
+
+module test_convex_hull2(poly) {
+
 }

test/test_all.scad

@@ -2,6 +2,7 @@
 include <test_rounded_square.scad>;
 include <test_line2d.scad>;
 include <test_hexagons.scad>;
+include <test_polygon_hull.scad>;
 
 // 3D
 include <test_rounded_cube.scad>;

test/test_polygon_hull.scad

@@ -0,0 +1,19 @@
+include <polygon_hull.scad>;
+
+module test_polygon_hull() {
+    echo("==== test_polygon_hull ====");
+    polygon_hull([
+        [1, 1],
+        [1, 0],
+        [0, 1],
+        [-2, 1],
+        [-1, -1]
+    ]);
+}
+
+
+module test_convex_hull2(poly) {
+    assert(poly == [[-2, 1], [-1, -1], [1, 0], [1, 1]]);
+}
+
+test_polygon_hull();