Merge pull request #1463 from poneciak57/feature/test4_panic

feat: add tests4.rs exercise
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liv 2023-04-05 13:05:14 +00:00 committed by GitHub
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exercises/tests/tests4.rs Normal file
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// tests4.rs
// Make sure that we're testing for the correct conditions!
// Execute `rustlings hint tests4` or use the `hint` watch subcommand for a hint.
// I AM NOT DONE
struct Rectangle {
width: i32,
height: i32
}
impl Rectangle {
// Only change the test functions themselves
pub fn new(width: i32, height: i32) -> Self {
if width <= 0 || height <= 0 {
panic!("Rectangle width and height cannot be negative!")
}
Rectangle {width, height}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn correct_width_and_height() {
// This test should check if the rectangle is the size that we pass into its constructor
let rect = Rectangle::new(10, 20);
assert_eq!(???, 10); // check width
assert_eq!(???, 20); // check height
}
#[test]
fn negative_width() {
// This test should check if program panics when we try to create rectangle with negative width
let _rect = Rectangle::new(-10, 10);
}
#[test]
fn negative_height() {
// This test should check if program panics when we try to create rectangle with negative height
let _rect = Rectangle::new(10, -10);
}
}

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@ -807,6 +807,17 @@ You can call a function right where you're passing arguments to `assert!` -- so
something like `assert!(having_fun())`. If you want to check that you indeed get false, you
can negate the result of what you're doing using `!`, like `assert!(!having_fun())`."""
[[exercises]]
name = "tests4"
path = "exercises/tests/tests4.rs"
mode = "test"
hint = """
We expect method `Rectangle::new()` to panic for negative values.
To handle that you need to add a special attribute to the test function.
You can refer to the docs:
https://doc.rust-lang.org/stable/book/ch11-01-writing-tests.html#checking-for-panics-with-should_panic"""
# STANDARD LIBRARY TYPES
[[exercises]]