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|
#[derive(Debug)]
struct Rectangle {
width: u32,
height: u32,
}
impl Rectangle {
fn can_hold(&self, other: &Rectangle) -> bool {
self.width > other.width && self.height > other.height
}
}
pub fn add_two(a: i32) -> i32 {
a + 2
}
pub fn greeting(name: &str) -> String {
format!("Hello {}!", name)
// format!("Hello!")
}
pub struct Guess {
value: i32,
}
impl Guess {
pub fn new(value: i32) -> Guess {
// if value < 1 || value > 100 {
// panic!("Guess value must be between 1 and 100, got {}.", value);
// }
if value < 1 {
panic!(
"Guess value must be greater than or equal to 1, got {}.",
value
);
} else if value > 100 {
panic!(
"Guess value must be less than or equal to 100, got {}.",
value
);
}
Guess { value }
}
}
#[cfg(test)]
mod tests {
// #[test]
// fn exploration() {
// assert_eq!(2 + 2, 4);
// }
// #[test]
// fn another() {
// panic!("Make this test fail");
// }
use super::*;
#[test]
fn lager_can_hold_smaller() {
let larger = Rectangle {
width: 8,
height: 7,
};
let smaller = Rectangle {
width: 5,
height: 1,
};
assert!(larger.can_hold(&smaller));
}
#[test]
fn smaller_can_hold_larger() {
let larger = Rectangle {
width: 8,
height: 7,
};
let smaller = Rectangle {
width: 5,
height: 1,
};
assert!(!smaller.can_hold(&larger));
}
#[test]
fn it_adds_two() {
assert_eq!(4, add_two(2));
}
#[test]
fn greeting_contains_name() {
let result = greeting("Jordan");
assert!(
result.contains("Jordan"),
"Greeting did not contain name, value was `{}`",
result
);
}
// #[test]
// #[should_panic]
// fn greater_than_100() {
// Guess::new(200);
// }
#[test]
#[should_panic(expected = "Guess value must be less than or equal to 100")]
fn greater_than_100() {
Guess::new(200);
}
#[test]
fn it_works() -> Result<(), String> {
if 2 + 2 == 4 {
Ok(())
} else {
Err(String::from("two plus two does not equal to four"))
}
}
}
|
