rustlings/exercises/structs/structs3.rs

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2020-04-27 18:17:26 +00:00
// 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 {
from: String,
to: String,
weight: f32
}
impl Package {
fn new(from: String, to: String, weight: f32) -> Package {
if weight <= 0.0 {
// Something goes here...
} else {
return Package {from, to, weight};
}
}
fn is_international(&self) -> ??? {
// Something goes here...
}
fn get_fees(&self, cost_per_kg: f32) -> ??? {
// Something goes here...
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
#[should_panic]
fn fail_creating_weightless_package() {
let country_from = String::from("Spain");
let country_to = String::from("Austria");
Package::new(country_from, country_to, -2.21);
}
#[test]
fn create_international_package() {
let country_from = String::from("Spain");
let country_to = String::from("Russia");
let package = Package::new(country_from, country_to, 1.2);
assert!(package.is_international());
}
#[test]
fn calculate_transport_fees() {
let country_from = String::from("Spain");
let country_to = String::from("Spain");
let country_fee = ???;
let package = Package::new(country_from, country_to, 22.0);
assert_eq!(package.get_fees(country_fee), 176.0);
}
}