Add Sub trait for Vector2D; add Vector3D with Add and Sub traits.

src/lib.rs

@@ -1,16 +1,41 @@
 use std::ops::Add;
+use std::ops::Sub;
 
-#[derive(Clone, Copy)]
+#[derive(Clone, Copy, Eq, PartialEq)]
 struct Vector2D<T>(T, T);
 
 impl<T: Add> Add for Vector2D<T> {
     type Output = Vector2D<T::Output>;
 
     fn add(self, other: Vector2D<T>) -> Vector2D<T::Output> {
-        Vector2D(
+        Vector2D(self.0 + other.0, self.1 + other.1)
-            self.0 + other.0,
+    }
-            self.1 + other.1,
+}
-        )
+
+impl<T: Sub> Sub for Vector2D<T> {
+    type Output = Vector2D<T::Output>;
+
+    fn sub(self, other: Vector2D<T>) -> Vector2D<T::Output> {
+        Vector2D(self.0 - other.0, self.1 - other.1)
+    }
+}
+
+#[derive(Clone, Copy, Eq, PartialEq)]
+struct Vector3D<T>(T, T, T);
+
+impl<T: Add> Add for Vector3D<T> {
+    type Output = Vector3D<T::Output>;
+
+    fn add(self, other: Vector3D<T>) -> Vector3D<T::Output> {
+        Vector3D(self.0 + other.0, self.1 + other.1, self.2 + other.2)
+    }
+}
+
+impl<T: Sub> Sub for Vector3D<T> {
+    type Output = Vector3D<T::Output>;
+
+    fn sub(self, other: Vector3D<T>) -> Vector3D<T::Output> {
+        Vector3D(self.0 - other.0, self.1 - other.1, self.2 - other.2)
     }
 }
 
@@ -19,16 +44,16 @@ mod tests {
     use super::*;
 
     #[test]
-    fn test_add_zeroes_yields_zeroes() {
+    fn test_vector2_add_zeroes_yields_zeroes() {
         let a = Vector2D(0.0, 0.0);
         let b = Vector2D(0.0, 0.0);
         let c = a + b;
         assert!(c.0 == 0.0);
-        assert!(c.0 == 0.0);
+        assert!(c.1 == 0.0);
     }
 
     #[test]
-    fn test_addition_identity() {
+    fn test_vector2d_addition_identity() {
         let id = Vector2D(0.0, 0.0);
         let a = Vector2D(1.0, 2.0);
         {
@@ -42,4 +67,400 @@ mod tests {
             assert!(d.1 == a.1);
         }
     }
+
+    #[test]
+    fn test_vector2d_addition_float() {
+        let a = Vector2D(1.0, 2.0);
+        let b = Vector2D(4.0, 3.0);
+        let c = Vector2D(-1.0, -5.5);
+        let d = Vector2D(1.0, -2.0);
+        {
+            let r = a + b;
+            assert!(r.0 == a.0 + b.0);
+            assert!(r.1 == a.1 + b.1);
+        }
+        {
+            let r = b + a;
+            assert!(r.0 == a.0 + b.0);
+            assert!(r.1 == a.1 + b.1);
+        }
+        {
+            let r = b + c;
+            assert!(r.0 == b.0 + c.0);
+            assert!(r.1 == b.1 + c.1);
+        }
+        {
+            let r = c + b;
+            assert!(r.0 == b.0 + c.0);
+            assert!(r.1 == b.1 + c.1);
+        }
+        {
+            let r = c + d;
+            assert!(r.0 == c.0 + d.0);
+            assert!(r.1 == c.1 + d.1);
+        }
+        {
+            let r = d + c;
+            assert!(r.0 == c.0 + d.0);
+            assert!(r.1 == c.1 + d.1);
+        }
+    }
+
+    #[test]
+    fn test_vector2d_addition_int() {
+        let a = Vector2D(1, 2);
+        let b = Vector2D(4, 3);
+        let c = Vector2D(-1, -5);
+        let d = Vector2D(1, -2);
+        {
+            let r = a + b;
+            assert!(r.0 == a.0 + b.0);
+            assert!(r.1 == a.1 + b.1);
+        }
+        {
+            let r = b + a;
+            assert!(r.0 == a.0 + b.0);
+            assert!(r.1 == a.1 + b.1);
+        }
+        {
+            let r = b + c;
+            assert!(r.0 == b.0 + c.0);
+            assert!(r.1 == b.1 + c.1);
+        }
+        {
+            let r = c + b;
+            assert!(r.0 == b.0 + c.0);
+            assert!(r.1 == b.1 + c.1);
+        }
+        {
+            let r = c + d;
+            assert!(r.0 == c.0 + d.0);
+            assert!(r.1 == c.1 + d.1);
+        }
+        {
+            let r = d + c;
+            assert!(r.0 == c.0 + d.0);
+            assert!(r.1 == c.1 + d.1);
+        }
+    }
+
+    #[test]
+    fn test_vector2_subtrace_zeroes_yields_zeroes() {
+        let a = Vector2D(0.0, 0.0);
+        let b = Vector2D(0.0, 0.0);
+        let c = a - b;
+        assert!(c.0 == 0.0);
+        assert!(c.1 == 0.0);
+    }
+
+    #[test]
+    fn test_vector2d_subtraction_identity() {
+        let id = Vector2D(0.0, 0.0);
+        let a = Vector2D(1.0, 2.0);
+        let c = a - id;
+        assert!(c.0 == a.0);
+        assert!(c.1 == a.1);
+    }
+
+    #[test]
+    fn test_vector2d_subtraction_float() {
+        let a = Vector2D(1.0, 2.0);
+        let b = Vector2D(4.0, 3.0);
+        let c = Vector2D(-1.0, -5.5);
+        let d = Vector2D(1.0, -2.0);
+        {
+            let r = a - b;
+            assert!(r.0 == a.0 - b.0);
+            assert!(r.1 == a.1 - b.1);
+        }
+        {
+            let r = b - a;
+            assert!(r.0 == b.0 - a.0);
+            assert!(r.1 == b.1 - a.1);
+        }
+        {
+            let r = b - c;
+            assert!(r.0 == b.0 - c.0);
+            assert!(r.1 == b.1 - c.1);
+        }
+        {
+            let r = c - b;
+            assert!(r.0 == c.0 - b.0);
+            assert!(r.1 == c.1 - b.1);
+        }
+        {
+            let r = c - d;
+            assert!(r.0 == c.0 - d.0);
+            assert!(r.1 == c.1 - d.1);
+        }
+        {
+            let r = d - c;
+            assert!(r.0 == d.0 - c.0);
+            assert!(r.1 == d.1 - c.1);
+        }
+    }
+
+    #[test]
+    fn test_vector2d_subrtaction_int() {
+        let a = Vector2D(1, 2);
+        let b = Vector2D(4, 3);
+        let c = Vector2D(-1, -5);
+        let d = Vector2D(1, -2);
+        {
+            let r = a - b;
+            assert!(r.0 == a.0 - b.0);
+            assert!(r.1 == a.1 - b.1);
+        }
+        {
+            let r = b - a;
+            assert!(r.0 == b.0 - a.0);
+            assert!(r.1 == b.1 - a.1);
+        }
+        {
+            let r = b - c;
+            assert!(r.0 == b.0 - c.0);
+            assert!(r.1 == b.1 - c.1);
+        }
+        {
+            let r = c - b;
+            assert!(r.0 == c.0 - b.0);
+            assert!(r.1 == c.1 - b.1);
+        }
+        {
+            let r = c - d;
+            assert!(r.0 == c.0 - d.0);
+            assert!(r.1 == c.1 - d.1);
+        }
+        {
+            let r = d - c;
+            assert!(r.0 == d.0 - c.0);
+            assert!(r.1 == d.1 - c.1);
+        }
+    }
+
+    #[test]
+    fn test_vector3d_add_zeroes_yields_zeroes() {
+        let a = Vector3D(0.0, 0.0, 0.0);
+        let b = Vector3D(0.0, 0.0, 0.0);
+        let c = a + b;
+        assert!(c.0 == 0.0);
+        assert!(c.1 == 0.0);
+        assert!(c.2 == 0.0);
+    }
+
+    #[test]
+    fn test_vector3d_addition_identity() {
+        let id = Vector3D(0.0, 0.0, 0.0);
+        let a = Vector3D(1.0, 2.0, 3.0);
+        {
+            let c = a + id;
+            assert!(c.0 == a.0);
+            assert!(c.1 == a.1);
+            assert!(c.2 == a.2);
+        }
+        {
+            let d = id + a;
+            assert!(d.0 == a.0);
+            assert!(d.1 == a.1);
+            assert!(d.2 == a.2);
+        }
+    }
+
+    #[test]
+    fn test_vector3d_addition_float() {
+        let a = Vector3D(1.0, 2.0, 1.5);
+        let b = Vector3D(4.0, 3.0, 2.0);
+        let c = Vector3D(-1.0, -5.5, 3.0);
+        let d = Vector3D(1.0, -2.0, 1.0);
+        {
+            let r = a + b;
+            assert!(r.0 == a.0 + b.0);
+            assert!(r.1 == a.1 + b.1);
+            assert!(r.2 == a.2 + b.2);
+        }
+        {
+            let r = b + a;
+            assert!(r.0 == a.0 + b.0);
+            assert!(r.1 == a.1 + b.1);
+            assert!(r.2 == a.2 + b.2);
+        }
+        {
+            let r = b + c;
+            assert!(r.0 == b.0 + c.0);
+            assert!(r.1 == b.1 + c.1);
+            assert!(r.2 == b.2 + c.2);
+        }
+        {
+            let r = c + b;
+            assert!(r.0 == b.0 + c.0);
+            assert!(r.1 == b.1 + c.1);
+            assert!(r.2 == b.2 + c.2);
+        }
+        {
+            let r = c + d;
+            assert!(r.0 == c.0 + d.0);
+            assert!(r.1 == c.1 + d.1);
+            assert!(r.2 == c.2 + d.2);
+        }
+        {
+            let r = d + c;
+            assert!(r.0 == c.0 + d.0);
+            assert!(r.1 == c.1 + d.1);
+            assert!(r.2 == c.2 + d.2);
+        }
+    }
+
+    #[test]
+    fn test_vector3d_addition_int() {
+        let a = Vector3D(1, 2, 1);
+        let b = Vector3D(4, 3, 2);
+        let c = Vector3D(-1, -5, 3);
+        let d = Vector3D(1, -2, 1);
+        {
+            let r = a + b;
+            assert!(r.0 == a.0 + b.0);
+            assert!(r.1 == a.1 + b.1);
+            assert!(r.2 == a.2 + b.2);
+        }
+        {
+            let r = b + a;
+            assert!(r.0 == a.0 + b.0);
+            assert!(r.1 == a.1 + b.1);
+            assert!(r.2 == a.2 + b.2);
+        }
+        {
+            let r = b + c;
+            assert!(r.0 == b.0 + c.0);
+            assert!(r.1 == b.1 + c.1);
+            assert!(r.2 == b.2 + c.2);
+        }
+        {
+            let r = c + b;
+            assert!(r.0 == b.0 + c.0);
+            assert!(r.1 == b.1 + c.1);
+            assert!(r.2 == b.2 + c.2);
+        }
+        {
+            let r = c + d;
+            assert!(r.0 == c.0 + d.0);
+            assert!(r.1 == c.1 + d.1);
+            assert!(r.2 == c.2 + d.2);
+        }
+        {
+            let r = d + c;
+            assert!(r.0 == c.0 + d.0);
+            assert!(r.1 == c.1 + d.1);
+            assert!(r.2 == c.2 + d.2);
+        }
+    }
+
+    #[test]
+    fn test_vector3d_subtract_zeroes_yields_zeroes() {
+        let a = Vector3D(0.0, 0.0, 0.0);
+        let b = Vector3D(0.0, 0.0, 0.0);
+        let c = a - b;
+        assert!(c.0 == 0.0);
+        assert!(c.1 == 0.0);
+        assert!(c.2 == 0.0);
+    }
+
+    #[test]
+    fn test_vector3d_subtraction_identity() {
+        let id = Vector3D(0.0, 0.0, 0.0);
+        let a = Vector3D(1.0, 2.0, 3.0);
+        {
+            let c = a - id;
+            assert!(c.0 == a.0);
+            assert!(c.1 == a.1);
+            assert!(c.2 == a.2);
+        }
+    }
+
+    #[test]
+    fn test_vector3d_subtraction_float() {
+        let a = Vector3D(1.0, 2.0, 1.5);
+        let b = Vector3D(4.0, 3.0, 2.0);
+        let c = Vector3D(-1.0, -5.5, 3.0);
+        let d = Vector3D(1.0, -2.0, 1.0);
+        {
+            let r = a - b;
+            assert!(r.0 == a.0 - b.0);
+            assert!(r.1 == a.1 - b.1);
+            assert!(r.2 == a.2 - b.2);
+        }
+        {
+            let r = b - a;
+            assert!(r.0 == b.0 - a.0);
+            assert!(r.1 == b.1 - a.1);
+            assert!(r.2 == b.2 - a.2);
+        }
+        {
+            let r = b - c;
+            assert!(r.0 == b.0 - c.0);
+            assert!(r.1 == b.1 - c.1);
+            assert!(r.2 == b.2 - c.2);
+        }
+        {
+            let r = c - b;
+            assert!(r.0 == c.0 - b.0);
+            assert!(r.1 == c.1 - b.1);
+            assert!(r.2 == c.2 - b.2);
+        }
+        {
+            let r = c - d;
+            assert!(r.0 == c.0 - d.0);
+            assert!(r.1 == c.1 - d.1);
+            assert!(r.2 == c.2 - d.2);
+        }
+        {
+            let r = d - c;
+            assert!(r.0 == d.0 - c.0);
+            assert!(r.1 == d.1 - c.1);
+            assert!(r.2 == d.2 - c.2);
+        }
+    }
+
+    #[test]
+    fn test_vector3d_subtraction_int() {
+        let a = Vector3D(1, 2, 1);
+        let b = Vector3D(4, 3, 2);
+        let c = Vector3D(-1, -5, 3);
+        let d = Vector3D(1, -2, 1);
+        {
+            let r = a - b;
+            assert!(r.0 == a.0 - b.0);
+            assert!(r.1 == a.1 - b.1);
+            assert!(r.2 == a.2 - b.2);
+        }
+        {
+            let r = b - a;
+            assert!(r.0 == b.0 - a.0);
+            assert!(r.1 == b.1 - a.1);
+            assert!(r.2 == b.2 - a.2);
+        }
+        {
+            let r = b - c;
+            assert!(r.0 == b.0 - c.0);
+            assert!(r.1 == b.1 - c.1);
+            assert!(r.2 == b.2 - c.2);
+        }
+        {
+            let r = c - b;
+            assert!(r.0 == c.0 - b.0);
+            assert!(r.1 == c.1 - b.1);
+            assert!(r.2 == c.2 - b.2);
+        }
+        {
+            let r = c - d;
+            assert!(r.0 == c.0 - d.0);
+            assert!(r.1 == c.1 - d.1);
+            assert!(r.2 == c.2 - d.2);
+        }
+        {
+            let r = d - c;
+            assert!(r.0 == d.0 - c.0);
+            assert!(r.1 == d.1 - c.1);
+            assert!(r.2 == d.2 - c.2);
+        }
+    }
 }