valid inputs invalid inputs valid inputs time zone offset is ignored invalid inputs invalid inputs invalid separators for decimal fractions valid inputs invalid inputs valid inputs time zone offset is ignored invalid inputs invalid inputs fractions of seconds hours minutes seconds multiple days single day negative durations minute seconds seconds invalid separators for decimal fractions
import unittest
from datetime import date, datetime, time, timedelta

from django.utils.dateparse import (
    parse_date,
    parse_datetime,
    parse_duration,
    parse_time,
)
from django.utils.timezone import get_fixed_timezone
from django.utils.version import PY311


class DateParseTests(unittest.TestCase):
    def test_parse_date(self):
        
        self.assertEqual(parse_date("2012-04-23"), date(2012, 4, 23))
        self.assertEqual(parse_date("2012-4-9"), date(2012, 4, 9))
        if PY311:
            self.assertEqual(parse_date("20120423"), date(2012, 4, 23))
        
        self.assertIsNone(parse_date("2012423"))
        with self.assertRaises(ValueError):
            parse_date("2012-04-56")

    def test_parse_time(self):
        
        self.assertEqual(parse_time("09:15:00"), time(9, 15))
        if PY311:
            self.assertEqual(parse_time("091500"), time(9, 15))
        self.assertEqual(parse_time("10:10"), time(10, 10))
        self.assertEqual(parse_time("10:20:30.400"), time(10, 20, 30, 400000))
        self.assertEqual(parse_time("10:20:30,400"), time(10, 20, 30, 400000))
        self.assertEqual(parse_time("4:8:16"), time(4, 8, 16))
        
        self.assertEqual(parse_time("00:05:23+04:00"), time(0, 5, 23))
        
        self.assertIsNone(parse_time("00:05:"))
        self.assertIsNone(parse_time("00:05:23,"))
        self.assertIsNone(parse_time("00:05:23+"))
        self.assertIsNone(parse_time("00:05:23+25:00"))
        self.assertIsNone(parse_time("4:18:101"))
        self.assertIsNone(parse_time("91500"))
        with self.assertRaises(ValueError):
            parse_time("09:15:90")

    def test_parse_datetime(self):
        valid_inputs = (
            ("2012-04-23T09:15:00", datetime(2012, 4, 23, 9, 15)),
            ("2012-4-9 4:8:16", datetime(2012, 4, 9, 4, 8, 16)),
            (
                "2012-04-23T09:15:00Z",
                datetime(2012, 4, 23, 9, 15, 0, 0, get_fixed_timezone(0)),
            ),
            (
                "2012-4-9 4:8:16-0320",
                datetime(2012, 4, 9, 4, 8, 16, 0, get_fixed_timezone(-200)),
            ),
            (
                "2012-04-23T10:20:30.400+02:30",
                datetime(2012, 4, 23, 10, 20, 30, 400000, get_fixed_timezone(150)),
            ),
            (
                "2012-04-23T10:20:30.400+02",
                datetime(2012, 4, 23, 10, 20, 30, 400000, get_fixed_timezone(120)),
            ),
            (
                "2012-04-23T10:20:30.400-02",
                datetime(2012, 4, 23, 10, 20, 30, 400000, get_fixed_timezone(-120)),
            ),
            (
                "2012-04-23T10:20:30,400-02",
                datetime(2012, 4, 23, 10, 20, 30, 400000, get_fixed_timezone(-120)),
            ),
            (
                "2012-04-23T10:20:30.400 +0230",
                datetime(2012, 4, 23, 10, 20, 30, 400000, get_fixed_timezone(150)),
            ),
            (
                "2012-04-23T10:20:30,400 +00",
                datetime(2012, 4, 23, 10, 20, 30, 400000, get_fixed_timezone(0)),
            ),
            (
                "2012-04-23T10:20:30   -02",
                datetime(2012, 4, 23, 10, 20, 30, 0, get_fixed_timezone(-120)),
            ),
        )
        for source, expected in valid_inputs:
            with self.subTest(source=source):
                self.assertEqual(parse_datetime(source), expected)

        
        self.assertIsNone(parse_datetime("20120423091500"))
        with self.assertRaises(ValueError):
            parse_datetime("2012-04-56T09:15:90")


class DurationParseTests(unittest.TestCase):
    def test_parse_python_format(self):
        timedeltas = [
            timedelta(
                days=4, minutes=15, seconds=30, milliseconds=100
            ),  
            timedelta(hours=10, minutes=15, seconds=30),  
            timedelta(days=4, minutes=15, seconds=30),  
            timedelta(days=1, minutes=00, seconds=00),  
            timedelta(days=-4, minutes=15, seconds=30),  
            timedelta(minutes=15, seconds=30),  
            timedelta(seconds=30),  
        ]
        for delta in timedeltas:
            with self.subTest(delta=delta):
                self.assertEqual(parse_duration(format(delta)), delta)

    def test_parse_postgresql_format(self):
        test_values = (
            ("1 day", timedelta(1)),
            ("-1 day", timedelta(-1)),
            ("1 day 0:00:01", timedelta(days=1, seconds=1)),
            ("1 day -0:00:01", timedelta(days=1, seconds=-1)),
            ("-1 day -0:00:01", timedelta(days=-1, seconds=-1)),
            ("-1 day +0:00:01", timedelta(days=-1, seconds=1)),
            (
                "4 days 0:15:30.1",
                timedelta(days=4, minutes=15, seconds=30, milliseconds=100),
            ),
            (
                "4 days 0:15:30.0001",
                timedelta(days=4, minutes=15, seconds=30, microseconds=100),
            ),
            ("-4 days -15:00:30", timedelta(days=-4, hours=-15, seconds=-30)),
        )
        for source, expected in test_values:
            with self.subTest(source=source):
                self.assertEqual(parse_duration(source), expected)

    def test_seconds(self):
        self.assertEqual(parse_duration("30"), timedelta(seconds=30))

    def test_minutes_seconds(self):
        self.assertEqual(parse_duration("15:30"), timedelta(minutes=15, seconds=30))
        self.assertEqual(parse_duration("5:30"), timedelta(minutes=5, seconds=30))

    def test_hours_minutes_seconds(self):
        self.assertEqual(
            parse_duration("10:15:30"), timedelta(hours=10, minutes=15, seconds=30)
        )
        self.assertEqual(
            parse_duration("1:15:30"), timedelta(hours=1, minutes=15, seconds=30)
        )
        self.assertEqual(
            parse_duration("100:200:300"),
            timedelta(hours=100, minutes=200, seconds=300),
        )

    def test_days(self):
        self.assertEqual(
            parse_duration("4 15:30"), timedelta(days=4, minutes=15, seconds=30)
        )
        self.assertEqual(
            parse_duration("4 10:15:30"),
            timedelta(days=4, hours=10, minutes=15, seconds=30),
        )

    def test_fractions_of_seconds(self):
        test_values = (
            ("15:30.1", timedelta(minutes=15, seconds=30, milliseconds=100)),
            ("15:30.01", timedelta(minutes=15, seconds=30, milliseconds=10)),
            ("15:30.001", timedelta(minutes=15, seconds=30, milliseconds=1)),
            ("15:30.0001", timedelta(minutes=15, seconds=30, microseconds=100)),
            ("15:30.00001", timedelta(minutes=15, seconds=30, microseconds=10)),
            ("15:30.000001", timedelta(minutes=15, seconds=30, microseconds=1)),
            ("15:30,000001", timedelta(minutes=15, seconds=30, microseconds=1)),
        )
        for source, expected in test_values:
            with self.subTest(source=source):
                self.assertEqual(parse_duration(source), expected)

    def test_negative(self):
        test_values = (
            ("-4 15:30", timedelta(days=-4, minutes=15, seconds=30)),
            ("-172800", timedelta(days=-2)),
            ("-15:30", timedelta(minutes=-15, seconds=-30)),
            ("-1:15:30", timedelta(hours=-1, minutes=-15, seconds=-30)),
            ("-30.1", timedelta(seconds=-30, milliseconds=-100)),
            ("-30,1", timedelta(seconds=-30, milliseconds=-100)),
            ("-00:01:01", timedelta(minutes=-1, seconds=-1)),
            ("-01:01", timedelta(seconds=-61)),
            ("-01:-01", None),
        )
        for source, expected in test_values:
            with self.subTest(source=source):
                self.assertEqual(parse_duration(source), expected)

    def test_iso_8601(self):
        test_values = (
            ("P4Y", None),
            ("P4M", None),
            ("P4W", None),
            ("P4D", timedelta(days=4)),
            ("-P1D", timedelta(days=-1)),
            ("P0.5D", timedelta(hours=12)),
            ("P0,5D", timedelta(hours=12)),
            ("-P0.5D", timedelta(hours=-12)),
            ("-P0,5D", timedelta(hours=-12)),
            ("PT5H", timedelta(hours=5)),
            ("-PT5H", timedelta(hours=-5)),
            ("PT5M", timedelta(minutes=5)),
            ("-PT5M", timedelta(minutes=-5)),
            ("PT5S", timedelta(seconds=5)),
            ("-PT5S", timedelta(seconds=-5)),
            ("PT0.000005S", timedelta(microseconds=5)),
            ("PT0,000005S", timedelta(microseconds=5)),
            ("-PT0.000005S", timedelta(microseconds=-5)),
            ("-PT0,000005S", timedelta(microseconds=-5)),
            ("-P4DT1H", timedelta(days=-4, hours=-1)),
            
            ("P3(3D", None),
            ("PT3)3H", None),
            ("PT3|3M", None),
            ("PT3/3S", None),
        )
        for source, expected in test_values:
            with self.subTest(source=source):
                self.assertEqual(parse_duration(source), expected)