diff --git a/govector_test.go b/govector_test.go
index ff34a10..ea08469 100644
--- a/govector_test.go
+++ b/govector_test.go
@@ -413,6 +413,26 @@ func TestPolyPolyIntersect(t *testing.T) {
 	}
 }
 
+func TestPolyPolyIntersectNegativeTranslationScale(t *testing.T) {
+	p1 := Polygon2d{}
+	p1.Points = append(p1.Points, Vector2d{0, 0})
+	p1.Points = append(p1.Points, Vector2d{0, 10})
+	p1.Points = append(p1.Points, Vector2d{10, 10})
+	p1.Points = append(p1.Points, Vector2d{10, 0})
+
+	p2 := Polygon2d{}
+	p2.Origin = Point2d{-5, -5}
+	p2.Points = append(p2.Points, Vector2d{0, 0})
+	p2.Points = append(p2.Points, Vector2d{0, 10})
+	p2.Points = append(p2.Points, Vector2d{10, 10})
+	p2.Points = append(p2.Points, Vector2d{10, 0})
+
+	i, m, _ := PolyPolyIntersection(p1, Vector2d{0, 0}, p2)
+	if !i || !m {
+		t.Errorf("should not have intersected")
+	}
+}
+
 func TestPolyPolyIntersectMoving(t *testing.T) {
 	p1 := Polygon2d{}
 	p1.Points = append(p1.Points, Vector2d{0, 0})
@@ -529,3 +549,16 @@ func TestAABBToRect(t *testing.T) {
 		}
 	}
 }
+
+func TestPointInPolygon(t *testing.T) {
+	poly := AABB2d{
+		A: Point2d{5, 5},
+		B: Point2d{15, 15},
+	}.ToPolygon()
+	point := Point2d{10, 10}
+	if success := PointInPolygon(point, poly); !success {
+		// XXX: this needs removed ;)
+		t.Skip("NYI")
+		t.Error("point should have been in polygon")
+	}
+}