helpers4 0.0.6

General-purpose Rust helpers, one crate, one feature per module (string, array, ...)
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

// This file is part of helpers4.
// Copyright (C) 2025 baxyz
// SPDX-License-Identifier: LGPL-3.0-or-later

use super::*;

#[test]
fn accepts_a_well_formed_slug() {
    assert!(is_slug("hello-world"));
    assert!(is_slug("a"));
    assert!(is_slug("v2-beta"));
}

#[test]
fn rejects_uppercase() {
    assert!(!is_slug("Hello-World"));
}

#[test]
fn rejects_leading_or_trailing_hyphens() {
    assert!(!is_slug("-hello"));
    assert!(!is_slug("hello-"));
}

#[test]
fn rejects_a_doubled_hyphen() {
    assert!(!is_slug("hello--world"));
}

#[test]
fn rejects_anything_that_is_not_ascii_alphanumeric_or_a_hyphen() {
    assert!(!is_slug("hello_world"));
    assert!(!is_slug("hello world"));
    assert!(!is_slug("café"));
}

#[test]
fn rejects_empty() {
    assert!(!is_slug(""));
}