rustlings/exercises/structs/structs3.rs
Sebastien Caunes 9ca08b8f2b fix : Use of integer for prices, therefore also for weight
rename confusing "from" and "to" to sender_country and recipient_country as suggested
2020-06-11 11:44:47 -05:00

68 lines
1.8 KiB
Rust

// structs3.rs
// Structs contain more than simply some data, they can also have logic, in this
// exercise we have defined the Package struct and we want to test some logic attached to it,
// make the code compile and the tests pass! If you have issues execute `rustlings hint structs3`
// I AM NOT DONE
#[derive(Debug)]
struct Package {
sender_country: String,
recipient_country: String,
weight_in_grams: i32,
}
impl Package {
fn new(sender_country: String, recipient_country: String, weight_in_grams: i32) -> Package {
if weight_in_grams <= 0 {
// Something goes here...
} else {
return Package {sender_country, recipient_country, weight_in_grams};
}
}
fn is_international(&self) -> ??? {
// Something goes here...
}
fn get_fees(&self, cents_per_kg: i32) -> ??? {
// Something goes here... (beware of grams to kg conversion)
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
#[should_panic]
fn fail_creating_weightless_package() {
let sender_country = String::from("Spain");
let recipient_country = String::from("Austria");
Package::new(sender_country, recipient_country, -2210);
}
#[test]
fn create_international_package() {
let sender_country = String::from("Spain");
let recipient_country = String::from("Russia");
let package = Package::new(sender_country, recipient_country, 1200);
assert!(package.is_international());
}
#[test]
fn calculate_transport_fees() {
let sender_country = String::from("Spain");
let recipient_country = String::from("Spain");
let cents_per_kg = ???;
let package = Package::new(sender_country, recipient_country, 1500);
assert_eq!(package.get_fees(cents_per_kg), 4500);
}
}