Add Rectangle tests

src/geometry.rs

@@ -220,4 +220,144 @@ mod tests {
             Point::new(0, 10) + Point::new(10, 0)
         );
     }
+
+    #[test]
+    fn test_rectangle_get_width() {
+        assert_eq!(
+            Rectangle::from_corners(Point::new(1, 1), Point::new(11, 11)).width(),
+            10
+        );
+        assert_eq!(
+            Rectangle::from_corner_width_height(Point::new(1, 1), 20, 30).width(),
+            20
+        );
+    }
+
+    #[test]
+    fn test_rectangle_get_height() {
+        assert_eq!(
+            Rectangle::from_corners(Point::new(1, 0), Point::new(11, 11)).height(),
+            11
+        );
+        assert_eq!(
+            Rectangle::from_corner_width_height(Point::new(7, 6), 20, 30).height(),
+            30
+        );
+    }
+
+    #[test]
+    fn test_rectangle_set_width() {
+        assert_eq!(
+            Rectangle::from_corner_width_height(Point::new(1, 2), 3, 4).with_width(5),
+            Rectangle::from_corner_width_height(Point::new(1, 2), 5, 4)
+        );
+        assert_eq!(
+            Rectangle::from_corners(Point::new(1, 2), Point::new(6, 7)).with_width(10),
+            Rectangle::from_corners(Point::new(1, 2), Point::new(11, 7))
+        );
+    }
+
+    #[test]
+    fn test_rectangle_set_height() {
+        assert_eq!(
+            Rectangle::from_corner_width_height(Point::new(1, 2), 3, 4).with_height(5),
+            Rectangle::from_corner_width_height(Point::new(1, 2), 3, 5)
+        );
+        assert_eq!(
+            Rectangle::from_corners(Point::new(1, 2), Point::new(6, 7)).with_height(10),
+            Rectangle::from_corners(Point::new(1, 2), Point::new(6, 12))
+        );
+    }
+
+    #[test]
+    fn test_rectangle_get_top_left() {
+        assert_eq!(
+            Point::new(1, 2),
+            Rectangle::from_corner_width_height(Point::new(1, 2), 3, 4).top_left()
+        );
+    }
+
+    #[test]
+    fn test_rectangle_get_top_right() {
+        assert_eq!(
+            Point::new(4, 2),
+            Rectangle::from_corner_width_height(Point::new(1, 2), 3, 4).top_right()
+        );
+    }
+
+    #[test]
+    fn test_rectangle_get_bottom_left() {
+        assert_eq!(
+            Point::new(1, 6),
+            Rectangle::from_corner_width_height(Point::new(1, 2), 3, 4).bottom_left()
+        );
+    }
+
+    #[test]
+    fn test_rectangle_get_bottom_right() {
+        assert_eq!(
+            Point::new(4, 6),
+            Rectangle::from_corner_width_height(Point::new(1, 2), 3, 4).bottom_right()
+        );
+    }
+
+    #[test]
+    fn test_rectangle_get_area() {
+        assert_eq!(100, Rectangle::at_origin_with_size(10, 10).area());
+        assert_eq!(
+            30,
+            Rectangle::from_corners(Point::origin(), Point::new(6, 5)).area()
+        );
+    }
+
+    #[test]
+    fn test_rectangle_intersect_1() {
+        let r1 = Rectangle::from_corner_width_height(Point::new(0, 0), 10, 10);
+        let r2 = Rectangle::from_corner_width_height(Point::new(8, 0), 10, 10);
+        let r3 = Rectangle::from_corner_width_height(Point::new(0, 8), 10, 10);
+        let r4 = Rectangle::from_corner_width_height(Point::new(8, 8), 10, 10);
+
+        let r5 = Rectangle::from_corner_width_height(Point::new(0, 100), 5, 5);
+        let r6 = Rectangle::from_corner_width_height(Point::new(100, 100), 5, 5);
+
+        assert!(r1.intersects(&r2));
+        assert!(r1.intersects(&r3));
+        assert!(r1.intersects(&r4));
+        assert!(r2.intersects(&r3));
+        assert!(r2.intersects(&r4));
+        assert!(r3.intersects(&r4));
+        assert!(r1.intersects(&r1));
+        assert!(r2.intersects(&r2));
+        assert!(r3.intersects(&r3));
+        assert!(r4.intersects(&r4));
+
+        assert!(!r1.intersects(&r5));
+        assert!(!r2.intersects(&r5));
+        assert!(!r3.intersects(&r5));
+        assert!(!r4.intersects(&r5));
+
+        assert!(!r1.intersects(&r6));
+        assert!(!r2.intersects(&r6));
+        assert!(!r3.intersects(&r6));
+        assert!(!r4.intersects(&r6));
+
+        assert!(!r5.intersects(&r6));
+    }
+
+    #[test]
+    fn test_rectangle_intersect_2() {
+        assert!(Rectangle::at_origin_with_size(3, 3).intersects(
+            &Rectangle::from_corner_width_height(Point::new(3, 3), 10, 10)
+        ));
+        assert!(Rectangle::at_origin_with_size(3, 3).intersects(
+            &Rectangle::from_corner_width_height(Point::new(3, 0), 10, 10)
+        ));
+    }
+
+    #[test]
+    fn test_rectangle_intersect_3() {
+        assert!(!Rectangle::at_origin_with_size(3, 3).intersects(
+            &Rectangle::from_corner_width_height(Point::new(4, 4), 10, 10)
+        ));
+    }
 }