exercism/rust/gigasecond/tests/gigasecond.rs

use time::PrimitiveDateTime as DateTime;

/// Create a datetime from the given numeric point in time.
///
/// Panics if any field is invalid.
fn dt(year: i32, month: u8, day: u8, hour: u8, minute: u8, second: u8) -> DateTime {
    use time::{Date, Time};

    DateTime::new(
        Date::from_calendar_date(year, month.try_into().unwrap(), day).unwrap(),
        Time::from_hms(hour, minute, second).unwrap(),
    )
}

#[test]
fn date() {
    let start_date = dt(2011, 4, 25, 0, 0, 0);

    assert_eq!(gigasecond::after(start_date), dt(2043, 1, 1, 1, 46, 40));
}

#[test]
fn another_date() {
    let start_date = dt(1977, 6, 13, 0, 0, 0);

    assert_eq!(gigasecond::after(start_date), dt(2009, 2, 19, 1, 46, 40));
}

#[test]
fn third_date() {
    let start_date = dt(1959, 7, 19, 0, 0, 0);

    assert_eq!(gigasecond::after(start_date), dt(1991, 3, 27, 1, 46, 40));
}

#[test]
fn datetime() {
    let start_date = dt(2015, 1, 24, 22, 0, 0);

    assert_eq!(gigasecond::after(start_date), dt(2046, 10, 2, 23, 46, 40));
}

#[test]
fn another_datetime() {
    let start_date = dt(2015, 1, 24, 23, 59, 59);

    assert_eq!(gigasecond::after(start_date), dt(2046, 10, 3, 1, 46, 39));
}