weekday 0.3.0

Weekday
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

use core::convert::TryFrom;

use crate::{Weekday, WEEKDAYS, WEEKDAY_N_MAX, WEEKDAY_N_MIN};

impl TryFrom<u8> for Weekday {
    type Error = &'static str;

    #[inline]
    fn try_from(n: u8) -> Result<Self, Self::Error> {
        match n {
            WEEKDAY_N_MIN..=WEEKDAY_N_MAX => Ok(WEEKDAYS[(n - 1) as usize].to_owned()),
            _ => Err("unknown"),
        }
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn simple() {
        assert_eq!(Weekday::try_from(0_u8).err().unwrap(), "unknown");
        assert_eq!(Weekday::try_from(1_u8).unwrap(), Weekday::Mon);
        assert_eq!(Weekday::try_from(7_u8).unwrap(), Weekday::Sun);
        assert_eq!(Weekday::try_from(8_u8).err().unwrap(), "unknown");
    }
}