82 lines
2.3 KiB
Rust
82 lines
2.3 KiB
Rust
// structs3.rs
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// Structs contain data, but can also have logic. In this exercise we have
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// defined the Package struct and we want to test some logic attached to it.
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// Make the code compile and the tests pass!
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// Execute `rustlings hint structs3` or use the `hint` watch subcommand for a hint.
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#[derive(Debug)]
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struct Package {
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sender_country: String,
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recipient_country: String,
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weight_in_grams: i32,
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}
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impl Package {
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fn new(sender_country: String, recipient_country: String, weight_in_grams: i32) -> Package {
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if weight_in_grams <= 0 {
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panic!("Can not ship a weightless package.")
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} else {
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Package {
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sender_country,
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recipient_country,
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weight_in_grams,
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}
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}
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}
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fn is_international(&self) -> bool {
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if self.sender_country == self.recipient_country { false } else { true }
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}
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fn get_fees(&self, cents_per_gram: i32) -> i32 {
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self.weight_in_grams * cents_per_gram
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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#[should_panic]
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fn fail_creating_weightless_package() {
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let sender_country = String::from("Spain");
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let recipient_country = String::from("Austria");
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Package::new(sender_country, recipient_country, -2210);
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}
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#[test]
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fn create_international_package() {
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let sender_country = String::from("Spain");
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let recipient_country = String::from("Russia");
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let package = Package::new(sender_country, recipient_country, 1200);
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assert!(package.is_international());
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}
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#[test]
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fn create_local_package() {
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let sender_country = String::from("Canada");
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let recipient_country = sender_country.clone();
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let package = Package::new(sender_country, recipient_country, 1200);
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assert!(!package.is_international());
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}
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#[test]
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fn calculate_transport_fees() {
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let sender_country = String::from("Spain");
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let recipient_country = String::from("Spain");
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let cents_per_gram = 3;
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let package = Package::new(sender_country, recipient_country, 1500);
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assert_eq!(package.get_fees(cents_per_gram), 4500);
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assert_eq!(package.get_fees(cents_per_gram * 2), 9000);
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}
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}
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