55 lines
984 B
Plaintext
55 lines
984 B
Plaintext
struct Vector2 {
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x i32,
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y i32,
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}
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impl Vector2 {
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pub fn magnitude(*self) i32 {
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self.x * self.x + self.y * self.y
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}
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}
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pub fn test_inherent_impl() {
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let v = Vector2 { x: 3, y: 4 };
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assert_eq!(v.magnitude(), 25);
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}
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trait Display {
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fn display(*self) String;
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}
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impl Display for Vector2 {
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fn display(*self) String {
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format!("({}, {})", self.x, self.y)
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}
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}
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pub fn test_trait_impl_block() {
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let v = Vector2 { x: 1, y: 2 };
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let s = v.display();
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assert_eq!(s.len() > 0, true);
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}
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impl Vector2 {
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pub fn add(*self, other Vector2) Vector2 {
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Vector2 {
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x: self.x + other.x,
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y: self.y + other.y,
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}
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}
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}
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pub fn test_multiple_impls() {
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let a = Vector2 { x: 1, y: 2 };
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let b = Vector2 { x: 3, y: 4 };
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let c = a.add(b);
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assert_eq!(c.x, 4);
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assert_eq!(c.y, 6);
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}
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pub fn run_tests() {
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test_inherent_impl();
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test_trait_impl_block();
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test_multiple_impls();
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}
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