Animal trait

gistfile1.txt

trait Animal {
    fn number_of_legs(&self) -> i32;

    fn speak(&self) -> String;

    fn eat(&mut self);
}

struct Cat {

}

struct Dog {

}

impl Animal for Cat {
    fn number_of_legs(&self) -> i32 {
        todo!()
    }

    fn speak(&self) -> String {
        todo!()
    }

    fn eat(&mut self) {
        todo!()
    }
}


#[test]
fn test_cat() {
    let cat = Cat { };

    assert_eq!(cat.speak(), "Meow");
}

#[test]
fn test_dog() {
    let cat = Cat { };

    assert_eq!(cat.speak(), "Meow");
}