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rustlings/solutions/15_traits/traits4.rs
2024-06-27 12:29:35 +02:00

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813 B
Rust

trait Licensed {
fn licensing_info(&self) -> String {
"Default license".to_string()
}
}
struct SomeSoftware;
struct OtherSoftware;
impl Licensed for SomeSoftware {}
impl Licensed for OtherSoftware {}
fn compare_license_types(software1: impl Licensed, software2: impl Licensed) -> bool {
// ^^^^^^^^^^^^^ ^^^^^^^^^^^^^
software1.licensing_info() == software2.licensing_info()
}
fn main() {
// You can optionally experiment here.
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn compare_license_information() {
assert!(compare_license_types(SomeSoftware, OtherSoftware));
}
#[test]
fn compare_license_information_backwards() {
assert!(compare_license_types(OtherSoftware, SomeSoftware));
}
}