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Diffstat (limited to 'rustlings/exercises/13_error_handling/errors1.rs')
| -rw-r--r-- | rustlings/exercises/13_error_handling/errors1.rs | 40 |
1 files changed, 0 insertions, 40 deletions
diff --git a/rustlings/exercises/13_error_handling/errors1.rs b/rustlings/exercises/13_error_handling/errors1.rs deleted file mode 100644 index b9b9bd5..0000000 --- a/rustlings/exercises/13_error_handling/errors1.rs +++ /dev/null @@ -1,40 +0,0 @@ -// TODO: This function refuses to generate text to be printed on a nametag if -// you pass it an empty string. It'd be nicer if it explained what the problem -// was instead of just returning `None`. Thankfully, Rust has a similar -// construct to `Option` that can be used to express error conditions. Change -// the function signature and body to return `Result<String, String>` instead -// of `Option<String>`. -fn generate_nametag_text(name: String) -> Result<String, String> { - if name.is_empty() { - Err(String::from("Empty names aren't allowed")) - } else { - Ok(format!("Hi! My name is {name}")) - } -} - -fn main() { - // You can optionally experiment here. -} - -#[cfg(test)] -mod tests { - use super::*; - - #[test] - fn generates_nametag_text_for_a_nonempty_name() { - assert_eq!( - generate_nametag_text("Beyoncé".to_string()).as_deref(), - Ok("Hi! My name is Beyoncé"), - ); - } - - #[test] - fn explains_why_generating_nametag_text_fails() { - assert_eq!( - generate_nametag_text(String::new()) - .as_ref() - .map_err(|e| e.as_str()), - Err("Empty names aren't allowed"), - ); - } -} |