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Add more tests for parse_from_str and specifiers
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Add exhaustive set of tests for `DateTime<FixedOffset>::parse_from_str`
function and all strftime specifiers.

Issue #1112
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@jtmoon79
jtmoon79 committed Jun 3, 2023
1 parent 088b693 commit 26cd263
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205 changes: 204 additions & 1 deletion src/datetime/tests.rs
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Original file line number Diff line number Diff line change
@@ -1,6 +1,8 @@
use std::time::{SystemTime, UNIX_EPOCH};

use super::DateTime;
use crate::format::ParseResult;
use crate::naive::date::{MAX_YEAR, MIN_YEAR};
use crate::naive::{NaiveDate, NaiveTime};
use crate::offset::{FixedOffset, TimeZone, Utc};
#[cfg(feature = "clock")]
Expand Down Expand Up @@ -989,8 +991,209 @@ fn test_utc_datetime_from_str_with_spaces() {
assert!(Utc.datetime_from_str("Aug 09 2013 23:54:35 !!!", "%b %d %Y %H:%M:%S ").is_err());
}

/// Test `parse_from_str` focused on strftime `%Y`, `%y`, and `%C` specifiers.
#[test]
fn test_datetime_parse_from_str() {
fn test_datetime_parse_from_str_year() {
fn parse(data: &str, format: &str) -> ParseResult<DateTime<FixedOffset>> {
eprintln!("parse: data: {:?}, format: {:?}", data, format);
DateTime::<FixedOffset>::parse_from_str(data, format)
}
fn parse_year(data: &str, format: &str) -> i32 {
eprintln!("parse_year: data: {:?}, format: {:?}", data, format);
DateTime::<FixedOffset>::parse_from_str(data, format).unwrap().year()
}
let dt = ymdhms(&FixedOffset::east_opt(-9 * 60 * 60).unwrap(), 2013, 8, 9, 23, 54, 35);

//
// %Y
//
// ok
assert_eq!(parse("2013-08-09T23:54:35 -0900", "%Y-%m-%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("08-2013-09T23:54:35 -0900", "%m-%Y-%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse_year("9999-08-09T23:54:35 -0900", "%Y-%m-%dT%H:%M:%S %z"), 9999);
assert_eq!(parse_year("999-08-09T23:54:35 -0900", "%Y-%m-%dT%H:%M:%S %z"), 999);
assert_eq!(parse_year("99-08-09T23:54:35 -0900", "%Y-%m-%dT%H:%M:%S %z"), 99);
assert_eq!(parse_year("9-08-09T23:54:35 -0900", "%Y-%m-%dT%H:%M:%S %z"), 9);
assert_eq!(parse_year("0-08-09T23:54:35 -0900", "%Y-%m-%dT%H:%M:%S %z"), 0);
let d1: String = MIN_YEAR.to_string() + "-08-09T23:54:35 -0900";
assert_eq!(parse_year(d1.as_str(), "%Y-%m-%dT%H:%M:%S %z"), MIN_YEAR);
let d1: String = (MIN_YEAR + 1).to_string() + "-08-09T23:54:35 -0900";
assert_eq!(parse_year(d1.as_str(), "%Y-%m-%dT%H:%M:%S %z"), MIN_YEAR + 1);
// errors
// XXX: MAX_YEAR cannont be parsed, can only parse up to four decimal digits
let d1: String = MAX_YEAR.to_string() + "-08-09T23:54:35 -0900";
assert!(parse(d1.as_str(), "%Y-%m-%dT%H:%M:%S %z").is_err());
assert!(parse("99999-08-09T23:54:35 -0900", "%Y-%m-%dT%H:%M:%S %z").is_err());
assert!(parse("A-08-09T23:54:35 -0900", "%Y-%m-%dT%H:%M:%S %z").is_err());
assert!(parse("0x11-08-09T23:54:35 -0900", "%Y-%m-%dT%H:%M:%S %z").is_err());
assert!(parse("108-09T23:54:35 -0900", "%Y%m-%dT%H:%M:%S %z").is_err());

//
// %y
//
// ok
assert_eq!(parse("13-08-09T23:54:35 -0900", "%y-%m-%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("08-13-09T23:54:35 -0900", "%m-%y-%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse_year("0-08-09T23:54:35 -0900", "%y-%m-%dT%H:%M:%S %z"), 2000);
assert_eq!(parse_year("99-08-09T23:54:35 -0900", "%y-%m-%dT%H:%M:%S %z"), 1999);
assert_eq!(parse_year("108-09T23:54:35 -0900", "%y%m-%dT%H:%M:%S %z"), 2010);
assert_eq!(parse_year("081-09T23:54:35 -0900", "%m%y-%dT%H:%M:%S %z"), 2001);
// errors
assert!(parse("999-08-09T23:54:35 -0900", "%y-%m-%dT%H:%M:%S %z").is_err());
assert!(parse("100-08-09T23:54:35 -0900", "%y-%m-%dT%H:%M:%S %z").is_err());
assert!(parse("013-08-09T23:54:35 -0900", "%y-%m-%dT%H:%M:%S %z").is_err());
assert!(parse("0x11-08-09T23:54:35 -0900", "%y-%m-%dT%H:%M:%S %z").is_err());
assert!(parse("A-08-09T23:54:35 -0900", "%y-%m-%dT%H:%M:%S %z").is_err());

//
// %C
//
// ok
assert_eq!(parse("2013-08-09T23:54:35 -0900", "%C%y-%m-%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("20_13-08-09T23:54:35 -0900", "%C_%y-%m-%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse_year("0_13-08-09T23:54:35 -0900", "%C_%y-%m-%dT%H:%M:%S %z"), 13);
assert_eq!(parse_year("9_13-08-09T23:54:35 -0900", "%C_%y-%m-%dT%H:%M:%S %z"), 913);
assert_eq!(parse_year("99_13-08-09T23:54:35 -0900", "%C_%y-%m-%dT%H:%M:%S %z"), 9913);
assert_eq!(parse_year("013-08-09T23:54:35 -0900", "%C%y-%m-%dT%H:%M:%S %z"), 103);
assert_eq!(parse_year("113-08-09T23:54:35 -0900", "%C%y-%m-%dT%H:%M:%S %z"), 1103);
assert_eq!(parse_year("223-08-09T23:54:35 -0900", "%C%y-%m-%dT%H:%M:%S %z"), 2203);
assert_eq!(parse_year("553-08-09T23:54:35 -0900", "%C%y-%m-%dT%H:%M:%S %z"), 5503);
assert_eq!(parse_year("993-08-09T23:54:35 -0900", "%C%y-%m-%dT%H:%M:%S %z"), 9903);
assert_eq!(parse_year("9923-08-09T23:54:35 -0900", "%C%y-%m-%dT%H:%M:%S %z"), 9923);
// errors
assert!(parse("913_2-08-09T23:54:35 -0900", "%C_%y-%m-%dT%H:%M:%S %z").is_err());
assert!(parse("9913-08-09T23:54:35 -0900", "%C_%y-%m-%dT%H:%M:%S %z").is_err());
assert!(parse("99923-08-09T23:54:35 -0900", "%C%y-%m-%dT%H:%M:%S %z").is_err());
assert!(parse("20-13-09T23:54:35 -0900", "%m-%C-%dT%H:%M:%S %z").is_err());
assert!(parse("999_01-08-09T23:54:35 -0900", "%C_%y-%m-%dT%H:%M:%S %z").is_err());
assert!(parse("100_01-08-09T23:54:35 -0900", "%C_%y-%m-%dT%H:%M:%S %z").is_err());
assert!(parse("0x11-08-09T23:54:35 -0900", "%C-%m-%dT%H:%M:%S %z").is_err());
assert!(parse("A-08-09T23:54:35 -0900", "%C-%m-%dT%H:%M:%S %z").is_err());
}

/// Test `parse_from_str` focused on strftime `%m`, `%b`, `%h`, and `%B` specifiers.
#[test]
fn test_datetime_parse_from_str_month() {
fn parse(data: &str, format: &str) -> ParseResult<DateTime<FixedOffset>> {
eprintln!("parse: data: {:?}, format: {:?}", data, format);
DateTime::<FixedOffset>::parse_from_str(data, format)
}
fn parse_month(data: &str, format: &str) -> u32 {
eprintln!("parse_month: data: {:?}, format: {:?}", data, format);
DateTime::<FixedOffset>::parse_from_str(data, format).unwrap().month()
}
let dt = ymdhms(&FixedOffset::east_opt(-9 * 60 * 60).unwrap(), 2013, 8, 9, 23, 54, 35);

//
// %m
//
// ok
assert_eq!(parse("2013-08-09T23:54:35 -0900", "%Y-%m-%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("201308-09T23:54:35 -0900", "%Y%m-%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("2013-0809T23:54:35 -0900", "%Y-%m%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("20130809T23:54:35 -0900", "%Y%m%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("20130809235435-0900", "%Y%m%d%H%M%S%z"), Ok(dt));
assert_eq!(parse_month("20130109235435-0900", "%Y%m%d%H%M%S%z"), 1);
assert_eq!(parse_month("20131209235435-0900", "%Y%m%d%H%M%S%z"), 12);
// errors
assert!(parse("2013-00-09T23:54:35 -0900", "%Y-%m-%dT%H:%M:%S %z").is_err());
assert!(parse("2013-13-09T23:54:35 -0900", "%Y-%m-%dT%H:%M:%S %z").is_err());
assert!(parse("2013-55-09T23:54:35 -0900", "%Y-%m-%dT%H:%M:%S %z").is_err());
assert!(parse("2013-99-09T23:54:35 -0900", "%Y-%m-%dT%H:%M:%S %z").is_err());
assert!(parse("2013-123-09T23:54:35 -0900", "%Y-%m-%dT%H:%M:%S %z").is_err());

//
// %b
//
// ok
assert_eq!(parse("2013-Aug-09T23:54:35 -0900", "%Y-%b-%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("2013aug-09T23:54:35 -0900", "%Y%b-%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("2013-AUG09T23:54:35 -0900", "%Y-%b%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("2013aug09T23:54:35 -0900", "%Y%b%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("2013aug09235435-0900", "%Y%b%d%H%M%S%z"), Ok(dt));
assert_eq!(parse_month("2013jan09235435-0900", "%Y%b%d%H%M%S%z"), 1);
assert_eq!(parse_month("2013feb09235435-0900", "%Y%b%d%H%M%S%z"), 2);
assert_eq!(parse_month("2013mar09235435-0900", "%Y%b%d%H%M%S%z"), 3);
assert_eq!(parse_month("2013apr09235435-0900", "%Y%b%d%H%M%S%z"), 4);
assert_eq!(parse_month("2013may09235435-0900", "%Y%b%d%H%M%S%z"), 5);
assert_eq!(parse_month("2013jun09235435-0900", "%Y%b%d%H%M%S%z"), 6);
assert_eq!(parse_month("2013jul09235435-0900", "%Y%b%d%H%M%S%z"), 7);
assert_eq!(parse_month("2013aug09235435-0900", "%Y%b%d%H%M%S%z"), 8);
assert_eq!(parse_month("2013sep09235435-0900", "%Y%b%d%H%M%S%z"), 9);
assert_eq!(parse_month("2013oct09235435-0900", "%Y%b%d%H%M%S%z"), 10);
assert_eq!(parse_month("2013nov09235435-0900", "%Y%b%d%H%M%S%z"), 11);
assert_eq!(parse_month("2013dec09235435-0900", "%Y%b%d%H%M%S%z"), 12);
// errors
assert!(parse("2013-AWG-09T23:54:35 -0900", "%Y-%b-%dT%H:%M:%S %z").is_err());
assert!(parse("2013-AU-09T23:54:35 -0900", "%Y-%b-%dT%H:%M:%S %z").is_err());
assert!(parse("2013-AG-09T23:54:35 -0900", "%Y-%b-%dT%H:%M:%S %z").is_err());
assert!(parse("2013-AUG.-09T23:54:35 -0900", "%Y-%b-%dT%H:%M:%S %z").is_err());
assert!(parse("2013-AUGU-09T23:54:35 -0900", "%Y-%b-%dT%H:%M:%S %z").is_err());
assert!(parse("2013-AUGUST-09T23:54:35 -0900", "%Y-%b-%dT%H:%M:%S %z").is_err());

//
// %h
//
// ok
assert_eq!(parse("2013-Aug-09T23:54:35 -0900", "%Y-%h-%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("2013aug-09T23:54:35 -0900", "%Y%h-%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("2013-AUG09T23:54:35 -0900", "%Y-%h%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("2013aug09T23:54:35 -0900", "%Y%h%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("2013aug09235435-0900", "%Y%h%d%H%M%S%z"), Ok(dt));
assert_eq!(parse_month("2013jan09235435-0900", "%Y%h%d%H%M%S%z"), 1);
assert_eq!(parse_month("2013feb09235435-0900", "%Y%h%d%H%M%S%z"), 2);
assert_eq!(parse_month("2013mar09235435-0900", "%Y%h%d%H%M%S%z"), 3);
assert_eq!(parse_month("2013apr09235435-0900", "%Y%h%d%H%M%S%z"), 4);
assert_eq!(parse_month("2013may09235435-0900", "%Y%h%d%H%M%S%z"), 5);
assert_eq!(parse_month("2013jun09235435-0900", "%Y%h%d%H%M%S%z"), 6);
assert_eq!(parse_month("2013jul09235435-0900", "%Y%h%d%H%M%S%z"), 7);
assert_eq!(parse_month("2013aug09235435-0900", "%Y%h%d%H%M%S%z"), 8);
assert_eq!(parse_month("2013sep09235435-0900", "%Y%h%d%H%M%S%z"), 9);
assert_eq!(parse_month("2013oct09235435-0900", "%Y%h%d%H%M%S%z"), 10);
assert_eq!(parse_month("2013nov09235435-0900", "%Y%h%d%H%M%S%z"), 11);
assert_eq!(parse_month("2013dec09235435-0900", "%Y%h%d%H%M%S%z"), 12);
// errors
assert!(parse("2013-AWG-09T23:54:35 -0900", "%Y-%h-%dT%H:%M:%S %z").is_err());
assert!(parse("2013-AU-09T23:54:35 -0900", "%Y-%h-%dT%H:%M:%S %z").is_err());
assert!(parse("2013-AG-09T23:54:35 -0900", "%Y-%h-%dT%H:%M:%S %z").is_err());
assert!(parse("2013-AUG.-09T23:54:35 -0900", "%Y-%h-%dT%H:%M:%S %z").is_err());
assert!(parse("2013-AUGU-09T23:54:35 -0900", "%Y-%h-%dT%H:%M:%S %z").is_err());
assert!(parse("2013-AUGUST-09T23:54:35 -0900", "%Y-%h-%dT%H:%M:%S %z").is_err());

//
// %B
//
// ok
assert_eq!(parse("2013-August-09T23:54:35 -0900", "%Y-%B-%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("2013-aUgUsT-09T23:54:35 -0900", "%Y-%B-%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("2013-august-09T23:54:35 -0900", "%Y-%B-%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("2013august-09T23:54:35 -0900", "%Y%B-%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("2013-AUGust09T23:54:35 -0900", "%Y-%B%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("2013august09T23:54:35 -0900", "%Y%B%dT%H:%M:%S %z"), Ok(dt));
assert_eq!(parse("2013august09235435-0900", "%Y%B%d%H%M%S%z"), Ok(dt));
assert_eq!(parse_month("2013january09235435-0900", "%Y%B%d%H%M%S%z"), 1);
assert_eq!(parse_month("2013february09235435-0900", "%Y%B%d%H%M%S%z"), 2);
assert_eq!(parse_month("2013march09235435-0900", "%Y%B%d%H%M%S%z"), 3);
assert_eq!(parse_month("2013april09235435-0900", "%Y%B%d%H%M%S%z"), 4);
assert_eq!(parse_month("2013may09235435-0900", "%Y%B%d%H%M%S%z"), 5);
assert_eq!(parse_month("2013june09235435-0900", "%Y%B%d%H%M%S%z"), 6);
assert_eq!(parse_month("2013july09235435-0900", "%Y%B%d%H%M%S%z"), 7);
assert_eq!(parse_month("2013august09235435-0900", "%Y%B%d%H%M%S%z"), 8);
assert_eq!(parse_month("2013september09235435-0900", "%Y%B%d%H%M%S%z"), 9);
assert_eq!(parse_month("2013october09235435-0900", "%Y%B%d%H%M%S%z"), 10);
assert_eq!(parse_month("2013november09235435-0900", "%Y%B%d%H%M%S%z"), 11);
assert_eq!(parse_month("2013december09235435-0900", "%Y%B%d%H%M%S%z"), 12);
// errors
assert!(parse("2013-AUGUS-09T23:54:35 -0900", "%Y-%B-%dT%H:%M:%S %z").is_err());
assert!(parse("2013-AUGU-09T23:54:35 -0900", "%Y-%B-%dT%H:%M:%S %z").is_err());
assert!(parse("2013-AUG.-09T23:54:35 -0900", "%Y-%B-%dT%H:%M:%S %z").is_err());
assert!(parse("2013-AG-09T23:54:35 -0900", "%Y-%B-%dT%H:%M:%S %z").is_err());
assert!(parse("2013-A-09T23:54:35 -0900", "%Y-%B-%dT%H:%M:%S %z").is_err());
}

/// Test `parse_from_str` focused on strftime `%Z`, `%z`, `%:z`, and `%::z` specifiers.
#[test]
fn test_datetime_parse_from_str_timezone() {
let dt = ymdhms(&FixedOffset::east_opt(-9 * 60 * 60).unwrap(), 2013, 8, 9, 23, 54, 35);
let parse = DateTime::<FixedOffset>::parse_from_str;

Expand Down
4 changes: 2 additions & 2 deletions src/naive/date.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -28,8 +28,8 @@ use crate::{Datelike, TimeDelta, Weekday};
use super::internals::{self, DateImpl, Mdf, Of, YearFlags};
use super::isoweek;

const MAX_YEAR: i32 = internals::MAX_YEAR;
const MIN_YEAR: i32 = internals::MIN_YEAR;
pub(crate) const MAX_YEAR: i32 = internals::MAX_YEAR;
pub(crate) const MIN_YEAR: i32 = internals::MIN_YEAR;

// MAX_YEAR-12-31 minus 0000-01-01
// = ((MAX_YEAR+1)-01-01 minus 0001-01-01) + (0001-01-01 minus 0000-01-01) - 1 day
Expand Down
2 changes: 1 addition & 1 deletion src/naive/mod.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@
//! (e.g. [`TimeZone`](../offset/trait.TimeZone.html)),
//! but can be also used for the simpler date and time handling.

mod date;
pub(crate) mod date;
pub(crate) mod datetime;
mod internals;
mod isoweek;
Expand Down

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