pwd_generator/
lib.rs

1
2use rand::{
3    rngs::StdRng,
4    Rng,
5    SeedableRng
6};
7
8pub fn five_results(size: usize) -> Vec<String> {
9    vec![
10        generate(size),
11        generate(size),
12        generate(size),
13        generate(size),
14        generate(size),
15    ]
16}
17
18fn generate(size: usize) -> String {
19    let result = default(size);
20    result.iter().
21        map(|i| ALPHABET[(*i as usize) / 4]).
22        collect()
23}
24
25fn default(size: usize) -> Vec<u8> {
26    let mut rng = StdRng::from_entropy();
27    let mut result: Vec<u8> = vec![0; size];
28
29    rng.fill(&mut result[..]);
30    result
31}
32
33#[cfg(test)]
34mod test {
35    use super::*;
36
37    #[test]
38    fn test_deault() {
39        let bytes = default(5);
40
41        assert_eq!(bytes.len(), 5);
42    }
43
44    #[test]
45    fn test_generate() {
46        let v = generate(5);
47
48        assert_eq!(v.len(), 5)
49    }
50
51    #[test]
52    fn test_five_results() {
53        let v = five_results(8);
54
55        assert_eq!(v.len(), 5);
56
57        for pwd in v {
58            assert_eq!(pwd.len(), 8);
59        }
60    }
61}
62
63pub const ALPHABET: [char; 64] = [
64    '_', '-', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
65    'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
66    'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S',
67    'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
68];
pwd_generator/lib.rs

pwd_generator/
lib.rs
