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//! Tests for the [`DateTime`] type.
use der::{asn1::UtcTime, DateTime, Decode, Encode};
use proptest::prelude::*;
proptest! {
#[test]
fn roundtrip_datetime(
year in 1970u16..=9999,
month in 1u8..=12,
day in 1u8..=31,
hour in 0u8..=23,
min in 0u8..=59,
sec in 0u8..=59,
) {
let datetime1 = make_datetime(year, month, day, hour, min, sec);
let datetime2 = DateTime::from_unix_duration(datetime1.unix_duration()).unwrap();
prop_assert_eq!(datetime1, datetime2);
}
#[test]
fn roundtrip_utctime(
year in 1970u16..=2049,
month in 1u8..=12,
day in 1u8..=31,
hour in 0u8..=23,
min in 0u8..=59,
sec in 0u8..=59,
) {
let datetime = make_datetime(year, month, day, hour, min, sec);
let utc_time1 = UtcTime::try_from(datetime).unwrap();
let mut buf = [0u8; 128];
let mut encoder = der::SliceWriter::new(&mut buf);
utc_time1.encode(&mut encoder).unwrap();
let der_bytes = encoder.finish().unwrap();
let utc_time2 = UtcTime::from_der(der_bytes).unwrap();
prop_assert_eq!(utc_time1, utc_time2);
}
}
fn make_datetime(year: u16, month: u8, day: u8, hour: u8, min: u8, sec: u8) -> DateTime {
let max_day = if month == 2 {
let is_leap_year = year % 4 == 0 && (year % 100 != 0 || year % 400 == 0);
if is_leap_year {
29
} else {
28
}
} else {
30
};
let day = if day > max_day { max_day } else { day };
DateTime::new(year, month, day, hour, min, sec).unwrap_or_else(|e| {
panic!(
"invalid DateTime: {:02}-{:02}-{:02}T{:02}:{:02}:{:02}: {}",
year, month, day, hour, min, sec, e
);
})
}
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