rustlings/exercises/if/if3.rs

55 lines
1.0 KiB
Rust

// if3.rs
//
// Execute `rustlings hint if3` or use the `hint` watch subcommand for a hint.
pub fn animal_habitat(animal: &str) -> &'static str {
let identifier = if animal == "crab" {
1
} else if animal == "gopher" {
2
} else if animal == "snake" {
3
} else {
-1
};
// DO NOT CHANGE THIS STATEMENT BELOW
let habitat = if identifier == 1 {
"Beach"
} else if identifier == 2 {
"Burrow"
} else if identifier == 3 {
"Desert"
} else {
"Unknown"
};
habitat
}
// No test changes needed.
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn gopher_lives_in_burrow() {
assert_eq!(animal_habitat("gopher"), "Burrow")
}
#[test]
fn snake_lives_in_desert() {
assert_eq!(animal_habitat("snake"), "Desert")
}
#[test]
fn crab_lives_on_beach() {
assert_eq!(animal_habitat("crab"), "Beach")
}
#[test]
fn unknown_animal() {
assert_eq!(animal_habitat("dinosaur"), "Unknown")
}
}