geo_types/
error.rs

1#[derive(Debug, thiserror::Error)]
2pub enum Error {
3    #[error("Expected a {expected}, but found a {found}")]
4    MismatchedGeometry {
5        expected: &'static str,
6        found: &'static str,
7    },
8}
9
10#[cfg(test)]
11mod test {
12    use crate::{Geometry, Point, Rect};
13    use alloc::string::ToString;
14    use core::convert::TryFrom;
15
16    #[test]
17    fn error_output() {
18        let point = Point::new(1.0, 2.0);
19        let point_geometry = Geometry::from(point);
20
21        let rect = Rect::new(Point::new(1.0, 2.0), Point::new(3.0, 4.0));
22        let rect_geometry = Geometry::from(rect);
23
24        Point::try_from(point_geometry).expect("failed to unwrap inner enum Point");
25
26        let failure = Point::try_from(rect_geometry).unwrap_err();
27        assert_eq!(
28            failure.to_string(),
29            "Expected a geo_types::geometry::point::Point, but found a geo_types::geometry::rect::Rect"
30        );
31    }
32}
geo_types/error.rs

geo_types/
error.rs
