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blacktoast 2021-10-13 08:11:10 +00:00
parent 710c3fe134
commit 56a07c5c4b
1 changed files with 7 additions and 5 deletions
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12
exercises/error_handling/errors1.rs
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@ -6,14 +6,15 @@
// this function to have.
// Execute `rustlings hint errors1` for hints!
// I AM NOT DONE
pub fn generate_nametag_text(name: String) -> Option<String> {
pub fn generate_nametag_text(name: String) -> Result<String,String> {
if name.len() > 0 {
Some(format!("Hi! My name is {}", name))
Ok(format!("Hi! My name is {}", name))
} else {
// Empty names aren't allowed.
None
Err("`name` was empty; it must be nonempty.".into())
}
}
@ -28,12 +29,13 @@ mod tests {
fn generates_nametag_text_for_a_nonempty_name() {
assert_eq!(
generate_nametag_text("Beyoncé".into()),
Some("Hi! My name is Beyoncé".into())
Ok("Hi! My name is Beyoncé".into())
);
}
#[test]
fn explains_why_generating_nametag_text_fails() {
println!("{:?}",generate_nametag_text("".into()));
assert_eq!(
generate_nametag_text("".into()),
Err("`name` was empty; it must be nonempty.".into())