dryip 0.6.0

Short 🩸 Rust 🦀 code snippets for inspiration.
Documentation 
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use time::{Date, Duration};

/// Calculates the date of `duration` days from the given date.
/// - Use `ext::NumericalDuration` to create duration such `1.days()`
/// - Use `Date::from_calendar_date` to create a date.
///
/// # Examples
///
/// Basic usage:
///
/// ```rust
/// # use dryip::dates::add_days;
/// # use time::{ext::NumericalDuration, Date, Month, Duration};
/// let current_date = Date::from_calendar_date(2019, Month::January, 1).unwrap();
/// let target_date = Date::from_calendar_date(2019, Month::January, 2).unwrap();
/// assert_eq!(Ok(target_date), add_days(1.days(), current_date));
/// ```
/// # Errors
///
/// Will return `time::error::ComponentRange` if the addition operations fails.
pub fn add_days(duration: Duration, date: Date) -> Result<Date, time::error::ComponentRange> {
    Ok(date + duration)
}

#[cfg(test)]
mod tests {
    use super::*;
    use time::{ext::NumericalDuration, Date, Month};

    #[test]
    fn test_add_days() {
        let current_date = Date::from_calendar_date(2019, Month::January, 31).unwrap();

        assert_eq!(
            Ok(Date::from_calendar_date(2019, Month::February, 1).unwrap()),
            add_days(1.days(), current_date)
        );
        assert_eq!(
            Ok(Date::from_calendar_date(2019, Month::January, 29).unwrap()),
            add_days(-(2.days()), current_date)
        );
    }
}