Function it_works

02_ecosystem/geo/src/lib.rs:69–76

()

    use crate::*;
    #[test]
    fn it_works() {
        let c = Circle {
            x: 0.0,
            y: 1.0,
            radius: 3.0,
        };
        assert_eq!(c.area(), 28.274333882308138);
    }
}