Prevented test results order mattering

geometry_test.go

@@ -839,6 +839,16 @@ func TestRect_IntersectCircle(t *testing.T) {
 }
 
 func TestRect_IntersectionPoints(t *testing.T) {
+	in := func(v pixel.Vec, vs []pixel.Vec) bool {
+		for _, vec := range vs {
+			if vec == v {
+				return true
+			}
+		}
+
+		return false
+	}
+
 	type fields struct {
 		Min pixel.Vec
 		Max pixel.Vec
@@ -877,8 +887,14 @@ func TestRect_IntersectionPoints(t *testing.T) {
 				Min: tt.fields.Min,
 				Max: tt.fields.Max,
 			}
-			if got := r.IntersectionPoints(tt.args.l); !reflect.DeepEqual(got, tt.want) {
+			got := r.IntersectionPoints(tt.args.l)
-				t.Errorf("Rect.IntersectPoints() = %v, want %v", got, tt.want)
+			if len(got) != len(tt.want) {
+				t.Errorf("Rect.IntersectPoints() has incorrect length.  Expected %d, got %d", len(tt.want), len(got))
+			}
+			for _, v := range got {
+				if !in(v, tt.want) {
+					t.Errorf("Rect.IntersectPoints(): got unexpected result = %v", v)
+				}
 			}
 		})
 	}