use ParseError;
pub struct Coord {
pub lat: f64,
pub lon: f64,
}
impl Coord {
pub fn new(lat: f64, lon: f64)
-> Result<Coord, ParseError> {
if lat < -90.0 ||
lat > 90.0 ||
lon < -180.0 ||
lon > 180.0 {
return Err(ParseError {});
}
Ok(Coord {
lat,
lon
})
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn instantiate_coord() {
let lat: f64 = -23.0095839;
let lon: f64 = -43.4361816;
let coord = Coord::new(lat, lon)
.unwrap();
assert_eq!(coord.lat, lat);
assert_eq!(coord.lon, lon);
}
#[test]
#[should_panic]
fn lat_lower_limit() {
Coord::new(-91.0, 0.0)
.unwrap();
}
#[test]
#[should_panic]
fn lat_upper_limit() {
Coord::new(91.0, 0.0)
.unwrap();
}
#[test]
#[should_panic]
fn lon_lower_limit() {
Coord::new(0.0, -181.0)
.unwrap();
}
#[test]
#[should_panic]
fn lon_upper_limit() {
Coord::new(0.0, 181.0)
.unwrap();
}
}