From 097f3c74ea16bad95a659fc41a494f24e07656d1 Mon Sep 17 00:00:00 2001 From: mo8it Date: Wed, 26 Jun 2024 15:06:29 +0200 Subject: errors1 solution --- solutions/13_error_handling/errors1.rs | 36 +++++++++++++++++++++++++++++++++- 1 file changed, 35 insertions(+), 1 deletion(-) (limited to 'solutions/13_error_handling') diff --git a/solutions/13_error_handling/errors1.rs b/solutions/13_error_handling/errors1.rs index 4e18198..2a13bfd 100644 --- a/solutions/13_error_handling/errors1.rs +++ b/solutions/13_error_handling/errors1.rs @@ -1 +1,35 @@ -// Solutions will be available before the stable release. Thank you for testing the beta version 🥰 +fn generate_nametag_text(name: String) -> Result { + // ^^^^^^ ^^^^^^ + if name.is_empty() { + // `Err(String)` instead of `None`. + Err("Empty names aren't allowed".to_string()) + } else { + // `Ok` instead of `Some`. + 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_deref(), + Err("`name` was empty; it must be nonempty."), + ); + } +} -- cgit v1.2.3