mirror of
https://github.com/rust-lang/rustlings.git
synced 2024-12-25 15:10:26 +00:00
49 lines
1.3 KiB
Rust
49 lines
1.3 KiB
Rust
struct Rectangle {
|
|
width: i32,
|
|
height: i32,
|
|
}
|
|
|
|
impl Rectangle {
|
|
// Don't change this function.
|
|
fn new(width: i32, height: i32) -> Self {
|
|
if width <= 0 || height <= 0 {
|
|
// Returning a `Result` would be better here. But we want to learn
|
|
// how to test functions that can panic.
|
|
panic!("Rectangle width and height must be positive");
|
|
}
|
|
|
|
Rectangle { width, height }
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
// You can optionally experiment here.
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn correct_width_and_height() {
|
|
// TODO: This test should check if the rectangle has the size that we
|
|
// pass to its constructor.
|
|
let rect = Rectangle::new(10, 20);
|
|
assert_eq!(todo!(), 10); // Check width
|
|
assert_eq!(todo!(), 20); // Check height
|
|
}
|
|
|
|
// TODO: This test should check if the program panics when we try to create
|
|
// a rectangle with negative width.
|
|
#[test]
|
|
fn negative_width() {
|
|
let _rect = Rectangle::new(-10, 10);
|
|
}
|
|
|
|
// TODO: This test should check if the program panics when we try to create
|
|
// a rectangle with negative height.
|
|
#[test]
|
|
fn negative_height() {
|
|
let _rect = Rectangle::new(10, -10);
|
|
}
|
|
}
|