Lots of changes.

1 files changed, 203 insertions, 0 deletions

diff --git a/tests/dateparse_utils_test.py b/tests/dateparse_utils_test.py
new file mode 100755
index 0000000..ff16e01
--- /dev/null
+++ b/tests/dateparse_utils_test.py
@@ -0,0 +1,203 @@
+#!/usr/bin/env python3
+
+import datetime
+import unittest
+
+import pytz
+
+import dateparse.dateparse_utils as du
+import unittest_utils as uu
+
+
+class TestDateparseUtils(unittest.TestCase):
+
+    @uu.check_method_for_perf_regressions
+    def test_dateparsing(self):
+        dp = du.DateParser(
+            override_now_for_test_purposes = datetime.datetime(2021, 7, 2)
+        )
+        parsable_expressions = [
+            ('today',
+             datetime.datetime(2021, 7, 2)),
+            ('tomorrow',
+             datetime.datetime(2021, 7, 3)),
+            ('yesterday',
+             datetime.datetime(2021, 7, 1)),
+            ('21:30',
+             datetime.datetime(2021, 7, 2, 21, 30, 0, 0)),
+            ('12:01am',
+             datetime.datetime(2021, 7, 2, 0, 1, 0, 0)),
+            ('12:02p',
+             datetime.datetime(2021, 7, 2, 12, 2, 0, 0)),
+            ('0:03',
+             datetime.datetime(2021, 7, 2, 0, 3, 0, 0)),
+            ('last wednesday',
+             datetime.datetime(2021, 6, 30)),
+            ('this wed',
+             datetime.datetime(2021, 7, 7)),
+            ('next wed',
+             datetime.datetime(2021, 7, 14)),
+            ('this coming tues',
+             datetime.datetime(2021, 7, 6)),
+            ('this past monday',
+             datetime.datetime(2021, 6, 28)),
+            ('4 days ago',
+             datetime.datetime(2021, 6, 28)),
+            ('4 mondays ago',
+             datetime.datetime(2021, 6, 7)),
+            ('4 months ago',
+             datetime.datetime(2021, 3, 2)),
+            ('3 days back',
+             datetime.datetime(2021, 6, 29)),
+            ('13 weeks from now',
+             datetime.datetime(2021, 10, 1)),
+            ('1 year from now',
+             datetime.datetime(2022, 7, 2)),
+            ('4 weeks from now',
+             datetime.datetime(2021, 7, 30)),
+            ('3 saturdays ago',
+             datetime.datetime(2021, 6, 12)),
+            ('4 months from today',
+             datetime.datetime(2021, 11, 2)),
+            ('4 years from yesterday',
+             datetime.datetime(2025, 7, 1)),
+            ('4 weeks from tomorrow',
+             datetime.datetime(2021, 7, 31)),
+            ('april 15, 2005',
+             datetime.datetime(2005, 4, 15)),
+            ('april 14',
+             datetime.datetime(2021, 4, 14)),
+            ('9:30am on last wednesday',
+             datetime.datetime(2021, 6, 30, 9, 30)),
+            ('2005/apr/15',
+             datetime.datetime(2005, 4, 15)),
+            ('2005 apr 15',
+             datetime.datetime(2005, 4, 15)),
+            ('the 1st wednesday in may',
+             datetime.datetime(2021, 5, 5)),
+            ('last sun of june',
+             datetime.datetime(2021, 6, 27)),
+            ('this Easter',
+             datetime.datetime(2021, 4, 4)),
+            ('last christmas',
+             datetime.datetime(2020, 12, 25)),
+            ('last Xmas',
+             datetime.datetime(2020, 12, 25)),
+            ('xmas, 1999',
+             datetime.datetime(1999, 12, 25)),
+            ('next mlk day',
+             datetime.datetime(2022, 1, 17)),
+            ('Halloween, 2020',
+             datetime.datetime(2020, 10, 31)),
+            ('5 work days after independence day',
+             datetime.datetime(2021, 7, 12)),
+            ('50 working days from last wed',
+             datetime.datetime(2021, 9, 10)),
+            ('25 working days before columbus day',
+             datetime.datetime(2021, 9, 3)),
+            ('today +1 week',
+             datetime.datetime(2021, 7, 9)),
+            ('sunday -3 weeks',
+             datetime.datetime(2021, 6, 13)),
+            ('4 weeks before xmas, 1999',
+             datetime.datetime(1999, 11, 27)),
+            ('3 days before new years eve, 2000',
+             datetime.datetime(2000, 12, 28)),
+            ('july 4th',
+             datetime.datetime(2021, 7, 4)),
+            ('the ides of march',
+             datetime.datetime(2021, 3, 15)),
+            ('the nones of april',
+             datetime.datetime(2021, 4, 5)),
+            ('the kalends of may',
+             datetime.datetime(2021, 5, 1)),
+            ('9/11/2001',
+             datetime.datetime(2001, 9, 11)),
+            ('4 sundays before veterans\' day',
+             datetime.datetime(2021, 10, 17)),
+            ('xmas eve',
+             datetime.datetime(2021, 12, 24)),
+            ('this friday at 5pm',
+             datetime.datetime(2021, 7, 9, 17, 0, 0)),
+            ('presidents day',
+             datetime.datetime(2021, 2, 15)),
+            ('memorial day, 1921',
+             datetime.datetime(1921, 5, 30)),
+            ('today -4 wednesdays',
+             datetime.datetime(2021, 6, 9)),
+            ('thanksgiving',
+             datetime.datetime(2021, 11, 25)),
+            ('2 sun in jun',
+             datetime.datetime(2021, 6, 13)),
+            ('easter -40 days',
+             datetime.datetime(2021, 2, 23)),
+            ('easter +39 days',
+             datetime.datetime(2021, 5, 13)),
+            ('1st tuesday in nov, 2024',
+             datetime.datetime(2024, 11, 5)),
+            ('2 days before last xmas at 3:14:15.92a',
+             datetime.datetime(2020, 12, 23, 3, 14, 15, 92)),
+            ('3 weeks after xmas, 1995 at midday',
+             datetime.datetime(1996, 1, 15, 12, 0, 0)),
+            ('4 months before easter, 1992 at midnight',
+             datetime.datetime(1991, 12, 19)),
+            ('5 months before halloween, 1995 at noon',
+             datetime.datetime(1995, 5, 31, 12)),
+            ('4 days before last wednesday',
+             datetime.datetime(2021, 6, 26)),
+            ('44 months after today',
+             datetime.datetime(2025, 3, 2)),
+            ('44 years before today',
+             datetime.datetime(1977, 7, 2)),
+            ('44 weeks ago',
+             datetime.datetime(2020, 8, 28)),
+            ('15 minutes to 3am',
+             datetime.datetime(2021, 7, 2, 2, 45)),
+            ('quarter past 4pm',
+             datetime.datetime(2021, 7, 2, 16, 15)),
+            ('half past 9',
+             datetime.datetime(2021, 7, 2, 9, 30)),
+            ('4 seconds to midnight',
+             datetime.datetime(2021, 7, 1, 23, 59, 56)),
+            ('4 seconds to midnight, tomorrow',
+             datetime.datetime(2021, 7, 2, 23, 59, 56)),
+            ('2021/apr/15T21:30:44.55',
+             datetime.datetime(2021, 4, 15, 21, 30, 44, 55)),
+            ('2021/apr/15 at 21:30:44.55',
+             datetime.datetime(2021, 4, 15, 21, 30, 44, 55)),
+            ('2021/4/15 at 21:30:44.55',
+             datetime.datetime(2021, 4, 15, 21, 30, 44, 55)),
+            ('2021/04/15 at 21:30:44.55',
+             datetime.datetime(2021, 4, 15, 21, 30, 44, 55)),
+            ('2021/04/15 at 21:30:44.55Z',
+             datetime.datetime(2021, 4, 15, 21, 30, 44, 55,
+                               tzinfo=pytz.timezone('UTC'))),
+            ('2021/04/15 at 21:30:44.55EST',
+             datetime.datetime(2021, 4, 15, 21, 30, 44, 55,
+                               tzinfo=pytz.timezone('EST'))),
+            ('13 days after last memorial day at 12 seconds before 4pm',
+             datetime.datetime(2020, 6, 7, 15, 59, 48)),
+            ('    2     days     before   yesterday    at   9am      ',
+             datetime.datetime(2021, 6, 29, 9)),
+            ('-3 days before today',
+             datetime.datetime(2021, 7, 5)),
+            ('3 days before yesterday at midnight EST',
+             datetime.datetime(2021, 6, 28, tzinfo=pytz.timezone('EST'))),
+        ]
+
+        for (txt, expected_dt) in parsable_expressions:
+            try:
+                print(f'> {txt}')
+                actual_dt = dp.parse(txt)
+                self.assertIsNotNone(actual_dt)
+                self.assertEqual(
+                    actual_dt,
+                    expected_dt,
+                    f'"{txt}", got "{actual_dt}" while expecting "{expected_dt}"'
+                )
+            except du.ParseException:
+                self.fail(f'Expected "{txt}" to parse successfully.')
+
+
+if __name__ == '__main__':
+    unittest.main()