rust/comprehensive-rust
1
0
Fork 0
mirror of https://github.com/google/comprehensive-rust.git synced 2025-02-14 17:00:03 +02:00
Code Issues Releases Activity

20221228 add one more point to the polygon

Browse Source
This commit is contained in:
Der Chien 2022-12-28 21:49:01 +08:00 committed by GitHub
parent dcf29d4653
commit 42494f95ab
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
src/exercises/day-2/points-polygons.rs
View File

@ -84,8 +84,8 @@ impl Polygon {
} }
pub fn length(&self) -> f64 { pub fn length(&self) -> f64 {
if self.points.is_empty() { if self.points.len() < 3 {
return 0.0; return f64::NAN;
} }
let mut result = 0.0; let mut result = 0.0;
@ -207,6 +207,7 @@ mod tests {
fn test_shape_circumferences() { fn test_shape_circumferences() {
let mut poly = Polygon::new(); let mut poly = Polygon::new();
poly.add_point(Point::new(12, 13)); poly.add_point(Point::new(12, 13));
poly.add_point(Point::new(17, 11));
poly.add_point(Point::new(16, 16)); poly.add_point(Point::new(16, 16));
let shapes = vec![ let shapes = vec![
Shape::from(poly), Shape::from(poly),
@ -217,7 +218,7 @@ mod tests {
.map(Shape::circumference) .map(Shape::circumference)
.map(round_two_digits) .map(round_two_digits)
.collect::<Vec<_>>(); .collect::<Vec<_>>();
assert_eq!(circumferences, vec![10.0, 31.42]); assert_eq!(circumferences, vec![15.48, 31.42]);
} }
} }
// ANCHOR_END: unit-tests // ANCHOR_END: unit-tests