6 files changed, 53 insertions, 17 deletions
diff --git a/testdata/scad/features/for-tests.scad b/testdata/scad/features/for-tests.scad
index fe36789..10295b1 100644
--- a/testdata/scad/features/for-tests.scad
+++ b/testdata/scad/features/for-tests.scad
@@ -22,10 +22,10 @@ for(r=[1:2:6]) translate([r*10-30,30,0]) difference() {cylinder(r=r, center=true
 for(r=[1.5:0.2:2.5]) translate([r*10-30,30,0]) cube([1, 4*r, 2], center=true);
 
 // Negative range, negative step
-for(r=[5:-1:1]) translate([r*10-60,40,0]) cylinder(r=r);
+for(r=[5:-1:1]) translate([r*10-30,50,0]) cylinder(r=r);
 
-// Negative range, positive step
-for(r=[5:1:1]) translate([r*10-30,40,0]) cylinder(r=r);
+// Negative range, positive step (using backward compatible auto swap of begin and end)
+for(r=[5:1]) translate([r*10-30,40,0]) cylinder(r=r);
 
 // Zero step
 
diff --git a/testdata/scad/features/polygon-tests.scad b/testdata/scad/features/polygon-tests.scad
index b4e92b6..0cd259f 100644
--- a/testdata/scad/features/polygon-tests.scad
+++ b/testdata/scad/features/polygon-tests.scad
@@ -15,4 +15,10 @@ translate([-2,0,0]) polygon(points);
 translate([-2,-2,0]) polygon(points=points, paths=[[0,1,2,3], [4,5,6,7]]);
 translate([2,-4,0]) polygon([[0,0], [1,0], [1,1], [0,0]]);
 
+// With hole
+translate([-2,-4,0])
+  polygon(points=[[0,0], [1,0], [1,1], [0,1], [0.2,0.2], [0.8,0.2], [0.8,0.8], [0.2,0.8]],
+          paths=[[0,1,2,3],[4,5,6,7]]
+);
+
 // FIXME: convexity
diff --git a/testdata/scad/features/projection-cut-tests.scad b/testdata/scad/features/projection-cut-tests.scad
new file mode 100644
index 0000000..0409a3e
--- /dev/null
+++ b/testdata/scad/features/projection-cut-tests.scad
@@ -0,0 +1,15 @@
+// 2D child
+projection(cut=true) { square(); }
+
+projection(cut=true) translate([20,0,0]) cube(10, center=true);
+
+// Boundary case: clipping the top of a cube
+translate([0,20,0]) projection(cut=true) translate([0,0,-4.999999]) cube(10, center=true);
+
+// holes
+translate([0,-10,0]) projection(cut=true) {
+  union() {
+      difference() { cube(5,center=true); cube(4,center=true); }
+      translate([2.1,2.1]) difference() { cube(5,center=true); cube(4,center=true); }
+  }
+}
diff --git a/testdata/scad/features/projection-extrude-tests.scad b/testdata/scad/features/projection-extrude-tests.scad
new file mode 100644
index 0000000..d9c216c
--- /dev/null
+++ b/testdata/scad/features/projection-extrude-tests.scad
@@ -0,0 +1,3 @@
+// Linear extrude
+translate([22,0,0]) linear_extrude(height=20) projection(cut=true) translate([0,0,9]) sphere(r=10);
+translate([44,0,0]) linear_extrude(height=20) projection(cut=true) translate([0,0,7]) sphere(r=10);
diff --git a/testdata/scad/features/projection-tests.scad b/testdata/scad/features/projection-tests.scad
index e6c52ea..27d03fe 100644
--- a/testdata/scad/features/projection-tests.scad
+++ b/testdata/scad/features/projection-tests.scad
@@ -3,18 +3,25 @@ projection();
 // No children
 projection() { }
 // 2D child
-projection(cut=true) { square(); }
+projection() { square(); }
 
-linear_extrude(height=20) projection(cut=false) sphere(r=10);
-translate([22,0,0]) linear_extrude(height=20) projection(cut=true) translate([0,0,9]) sphere(r=10);
-translate([44,0,0]) linear_extrude(height=20) projection(cut=true) translate([0,0,7]) sphere(r=10);
+// Simple
+projection(cut=false) cube(10);
 
-// Boundary case: clipping the top of a cube
-translate([0,-22,0]) linear_extrude(height=5) projection(cut=true) translate([0,0,-4.999999]) cube(10, center=true);
+// Two children
+translate([-12,0]) projection(cut=false) {
+    cube(10);
+    difference() {
+      sphere(10);
+      cylinder(h=30, r=5, center=true);
+    }
+}
 
-// holes
-translate([0,-44,0]) linear_extrude(height=5) projection(cut=true) 
-	union() {
-		difference() { cube(5,center=true); cube(4,center=true); }
-		translate([2.1,2.1]) difference() { cube(5,center=true); cube(4,center=true); }
-	}
+// Holes
+translate([6,-12]) projection(cut=false) {
+    cube(10);
+    difference() {
+      sphere(10);
+      cylinder(h=30, r=5, center=true);
+    }
+}
diff --git a/testdata/scad/features/render-2d-tests.scad b/testdata/scad/features/render-2d-tests.scad
index 683ffe4..f8df115 100644
--- a/testdata/scad/features/render-2d-tests.scad
+++ b/testdata/scad/features/render-2d-tests.scad
@@ -1,6 +1,11 @@
 render() {
   difference() {
-    square(100, center=true);
-    circle(r=30);
+    square(10, center=true);
+    circle(r=3);
   }
 }
+
+translate([12,0,0]) render() {
+  square(10, center=true);
+  circle(r=3);
+}