nnn 1.2.2

Generate your newtypes from a single macro.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

/* Crate imports */
use nnn::{nnn, NNNewType as _};
/* Dependencies */
use rstest::rstest;

#[nnn(validators(not_empty))]
struct NonEmptyStr<'str>(&'str str);

#[rstest]
#[case("Hello")]
#[case("A")]
fn valid_not_empty_str(#[case] input: &str) {
    NonEmptyStr::try_new(input).unwrap();
}

#[rstest]
#[case("")]
fn invalid_not_empty_str(#[case] input: &str) {
    assert!(matches!(
        NonEmptyStr::try_new(input),
        Err(NonEmptyStrError::NotEmpty)
    ));
}