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authorHunter Kvalevog <hunter@kvog.sh>2026-10-02 21:53:51 -0500
committerHunter Kvalevog <hunter@kvog.sh>2026-10-02 21:53:51 -0500
commit4dfc11d74ab02ac5765ae5d08fb750c91f4744b4 (patch)
tree17ba62056d6b691dd0217b0e8f1b3a5826dce0f6 /rustlings/exercises/07_structs/structs3.rs
parent02d8f1c62896576e1266553a56980eddbc2a88d7 (diff)
rustlings: move to rust/
Diffstat (limited to 'rustlings/exercises/07_structs/structs3.rs')
-rw-r--r--rustlings/exercises/07_structs/structs3.rs84
1 files changed, 0 insertions, 84 deletions
diff --git a/rustlings/exercises/07_structs/structs3.rs b/rustlings/exercises/07_structs/structs3.rs
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--- a/rustlings/exercises/07_structs/structs3.rs
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-// Structs contain data, but can also have logic. In this exercise, we have
-// defined the `Package` struct, and we want to test some logic attached to it.
-
-#[derive(Debug)]
-struct Package {
- sender_country: String,
- recipient_country: String,
- weight_in_grams: u32,
-}
-
-impl Package {
- fn new(sender_country: String, recipient_country: String, weight_in_grams: u32) -> Self {
- if weight_in_grams < 10 {
- // This isn't how you should handle errors in Rust, but we will
- // learn about error handling later.
- panic!("Can't ship a package with weight below 10 grams");
- }
-
- Self {
- sender_country,
- recipient_country,
- weight_in_grams,
- }
- }
-
- fn is_international(&self) -> bool {
- self.sender_country != self.recipient_country
- }
-
- fn get_fees(&self, cents_per_gram: u32) -> u32 {
- self.weight_in_grams * cents_per_gram
- }
-}
-
-fn main() {
- // You can optionally experiment here.
-}
-
-#[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, 5);
- }
-
- #[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 create_local_package() {
- let sender_country = String::from("Canada");
- let recipient_country = sender_country.clone();
-
- 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_gram = 3;
-
- let package = Package::new(sender_country, recipient_country, 1500);
-
- assert_eq!(package.get_fees(cents_per_gram), 4500);
- assert_eq!(package.get_fees(cents_per_gram * 2), 9000);
- }
-}