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#!/usr/bin/env python
import math
import unittest
import psycopg2
from psycopg2.tz import FixedOffsetTimezone
import tests
class CommonDatetimeTestsMixin:
def execute(self, *args):
self.curs.execute(*args)
return self.curs.fetchone()[0]
def test_parse_date(self):
value = self.DATE('2007-01-01', self.curs)
self.assertNotEqual(value, None)
self.assertEqual(value.year, 2007)
self.assertEqual(value.month, 1)
self.assertEqual(value.day, 1)
def test_parse_null_date(self):
value = self.DATE(None, self.curs)
self.assertEqual(value, None)
def test_parse_incomplete_date(self):
self.assertRaises(psycopg2.DataError, self.DATE, '2007', self.curs)
self.assertRaises(psycopg2.DataError, self.DATE, '2007-01', self.curs)
def test_parse_time(self):
value = self.TIME('13:30:29', self.curs)
self.assertNotEqual(value, None)
self.assertEqual(value.hour, 13)
self.assertEqual(value.minute, 30)
self.assertEqual(value.second, 29)
def test_parse_null_time(self):
value = self.TIME(None, self.curs)
self.assertEqual(value, None)
def test_parse_incomplete_time(self):
self.assertRaises(psycopg2.DataError, self.TIME, '13', self.curs)
self.assertRaises(psycopg2.DataError, self.TIME, '13:30', self.curs)
def test_parse_datetime(self):
value = self.DATETIME('2007-01-01 13:30:29', self.curs)
self.assertNotEqual(value, None)
self.assertEqual(value.year, 2007)
self.assertEqual(value.month, 1)
self.assertEqual(value.day, 1)
self.assertEqual(value.hour, 13)
self.assertEqual(value.minute, 30)
self.assertEqual(value.second, 29)
def test_parse_null_datetime(self):
value = self.DATETIME(None, self.curs)
self.assertEqual(value, None)
def test_parse_incomplete_time(self):
self.assertRaises(psycopg2.DataError,
self.DATETIME, '2007', self.curs)
self.assertRaises(psycopg2.DataError,
self.DATETIME, '2007-01', self.curs)
self.assertRaises(psycopg2.DataError,
self.DATETIME, '2007-01-01 13', self.curs)
self.assertRaises(psycopg2.DataError,
self.DATETIME, '2007-01-01 13:30', self.curs)
def test_parse_null_interval(self):
value = self.INTERVAL(None, self.curs)
self.assertEqual(value, None)
class DatetimeTests(unittest.TestCase, CommonDatetimeTestsMixin):
"""Tests for the datetime based date handling in psycopg2."""
def setUp(self):
self.conn = psycopg2.connect(tests.dsn)
self.curs = self.conn.cursor()
self.DATE = psycopg2._psycopg.PYDATE
self.TIME = psycopg2._psycopg.PYTIME
self.DATETIME = psycopg2._psycopg.PYDATETIME
self.INTERVAL = psycopg2._psycopg.PYINTERVAL
def tearDown(self):
self.conn.close()
def test_parse_bc_date(self):
# datetime does not support BC dates
self.assertRaises(ValueError, self.DATE, '00042-01-01 BC', self.curs)
def test_parse_bc_datetime(self):
# datetime does not support BC dates
self.assertRaises(ValueError, self.DATETIME,
'00042-01-01 13:30:29 BC', self.curs)
def test_parse_time_microseconds(self):
value = self.TIME('13:30:29.123456', self.curs)
self.assertEqual(value.second, 29)
self.assertEqual(value.microsecond, 123456)
def test_parse_datetime_microseconds(self):
value = self.DATETIME('2007-01-01 13:30:29.123456', self.curs)
self.assertEqual(value.second, 29)
self.assertEqual(value.microsecond, 123456)
def check_time_tz(self, str_offset, offset):
from datetime import time, timedelta
base = time(13, 30, 29)
base_str = '13:30:29'
value = self.TIME(base_str + str_offset, self.curs)
# Value has time zone info and correct UTC offset.
self.assertNotEqual(value.tzinfo, None),
self.assertEqual(value.utcoffset(), timedelta(seconds=offset))
# Time portion is correct.
self.assertEqual(value.replace(tzinfo=None), base)
def test_parse_time_timezone(self):
self.check_time_tz("+01", 3600)
self.check_time_tz("-01", -3600)
self.check_time_tz("+01:15", 4500)
self.check_time_tz("-01:15", -4500)
# The Python datetime module does not support time zone
# offsets that are not a whole number of minutes, so we get an
# error here. Check that we are generating an understandable
# error message.
try:
self.check_time_tz("+01:15:42", 4542)
except ValueError, exc:
self.assertEqual(str(exc), "time zone offset 4542 is not a "
"whole number of minutes")
else:
self.fail("Expected ValueError")
try:
self.check_time_tz("-01:15:42", -4542)
except ValueError, exc:
self.assertEqual(str(exc), "time zone offset -4542 is not a "
"whole number of minutes")
else:
self.fail("Expected ValueError")
def check_datetime_tz(self, str_offset, offset):
from datetime import datetime, timedelta
base = datetime(2007, 1, 1, 13, 30, 29)
base_str = '2007-01-01 13:30:29'
value = self.DATETIME(base_str + str_offset, self.curs)
# Value has time zone info and correct UTC offset.
self.assertNotEqual(value.tzinfo, None),
self.assertEqual(value.utcoffset(), timedelta(seconds=offset))
# Datetime is correct.
self.assertEqual(value.replace(tzinfo=None), base)
# Conversion to UTC produces the expected offset.
UTC = FixedOffsetTimezone(0, "UTC")
value_utc = value.astimezone(UTC).replace(tzinfo=None)
self.assertEqual(base - value_utc, timedelta(seconds=offset))
def test_parse_datetime_timezone(self):
self.check_datetime_tz("+01", 3600)
self.check_datetime_tz("-01", -3600)
self.check_datetime_tz("+01:15", 4500)
self.check_datetime_tz("-01:15", -4500)
# The Python datetime module does not support time zone
# offsets that are not a whole number of minutes, so we get an
# error here. Check that we are generating an understandable
# error message.
try:
self.check_datetime_tz("+01:15:42", 4542)
except ValueError, exc:
self.assertEqual(str(exc), "time zone offset 4542 is not a "
"whole number of minutes")
else:
self.fail("Expected ValueError")
try:
self.check_datetime_tz("-01:15:42", -4542)
except ValueError, exc:
self.assertEqual(str(exc), "time zone offset -4542 is not a "
"whole number of minutes")
else:
self.fail("Expected ValueError")
def test_parse_time_no_timezone(self):
self.assertEqual(self.TIME("13:30:29", self.curs).tzinfo, None)
self.assertEqual(self.TIME("13:30:29.123456", self.curs).tzinfo, None)
def test_parse_datetime_no_timezone(self):
self.assertEqual(
self.DATETIME("2007-01-01 13:30:29", self.curs).tzinfo, None)
self.assertEqual(
self.DATETIME("2007-01-01 13:30:29.123456", self.curs).tzinfo, None)
def test_parse_interval(self):
value = self.INTERVAL('42 days 12:34:56.123456', self.curs)
self.assertNotEqual(value, None)
self.assertEqual(value.days, 42)
self.assertEqual(value.seconds, 45296)
self.assertEqual(value.microseconds, 123456)
def test_parse_negative_interval(self):
value = self.INTERVAL('-42 days -12:34:56.123456', self.curs)
self.assertNotEqual(value, None)
self.assertEqual(value.days, -43)
self.assertEqual(value.seconds, 41103)
self.assertEqual(value.microseconds, 876544)
def test_adapt_date(self):
from datetime import date
value = self.execute('select (%s)::date::text',
[date(2007, 1, 1)])
self.assertEqual(value, '2007-01-01')
def test_adapt_time(self):
from datetime import time
value = self.execute('select (%s)::time::text',
[time(13, 30, 29)])
self.assertEqual(value, '13:30:29')
def test_adapt_datetime(self):
from datetime import datetime
value = self.execute('select (%s)::timestamp::text',
[datetime(2007, 1, 1, 13, 30, 29)])
self.assertEqual(value, '2007-01-01 13:30:29')
def test_adapt_timedelta(self):
from datetime import timedelta
value = self.execute('select extract(epoch from (%s)::interval)',
[timedelta(days=42, seconds=45296,
microseconds=123456)])
seconds = math.floor(value)
self.assertEqual(seconds, 3674096)
self.assertEqual(int(round((value - seconds) * 1000000)), 123456)
def test_adapt_megative_timedelta(self):
from datetime import timedelta
value = self.execute('select extract(epoch from (%s)::interval)',
[timedelta(days=-42, seconds=45296,
microseconds=123456)])
seconds = math.floor(value)
self.assertEqual(seconds, -3583504)
self.assertEqual(int(round((value - seconds) * 1000000)), 123456)
# Only run the datetime tests if psycopg was compiled with support.
if not hasattr(psycopg2._psycopg, 'PYDATETIME'):
del DatetimeTests
class mxDateTimeTests(unittest.TestCase, CommonDatetimeTestsMixin):
"""Tests for the mx.DateTime based date handling in psycopg2."""
def setUp(self):
self.conn = psycopg2.connect(tests.dsn)
self.curs = self.conn.cursor()
self.DATE = psycopg2._psycopg.MXDATE
self.TIME = psycopg2._psycopg.MXTIME
self.DATETIME = psycopg2._psycopg.MXDATETIME
self.INTERVAL = psycopg2._psycopg.MXINTERVAL
def tearDown(self):
self.conn.close()
def test_parse_bc_date(self):
value = self.DATE('00042-01-01 BC', self.curs)
self.assertNotEqual(value, None)
# mx.DateTime numbers BC dates from 0 rather than 1.
self.assertEqual(value.year, -41)
self.assertEqual(value.month, 1)
self.assertEqual(value.day, 1)
def test_parse_bc_datetime(self):
value = self.DATETIME('00042-01-01 13:30:29 BC', self.curs)
self.assertNotEqual(value, None)
# mx.DateTime numbers BC dates from 0 rather than 1.
self.assertEqual(value.year, -41)
self.assertEqual(value.month, 1)
self.assertEqual(value.day, 1)
self.assertEqual(value.hour, 13)
self.assertEqual(value.minute, 30)
self.assertEqual(value.second, 29)
def test_parse_time_microseconds(self):
value = self.TIME('13:30:29.123456', self.curs)
self.assertEqual(math.floor(value.second), 29)
self.assertEqual(
int((value.second - math.floor(value.second)) * 1000000), 123456)
def test_parse_datetime_microseconds(self):
value = self.DATETIME('2007-01-01 13:30:29.123456', self.curs)
self.assertEqual(math.floor(value.second), 29)
self.assertEqual(
int((value.second - math.floor(value.second)) * 1000000), 123456)
def test_parse_time_timezone(self):
# Time zone information is ignored.
from mx.DateTime import Time
expected = Time(13, 30, 29)
self.assertEqual(expected, self.TIME("13:30:29+01", self.curs))
self.assertEqual(expected, self.TIME("13:30:29-01", self.curs))
self.assertEqual(expected, self.TIME("13:30:29+01:15", self.curs))
self.assertEqual(expected, self.TIME("13:30:29-01:15", self.curs))
self.assertEqual(expected, self.TIME("13:30:29+01:15:42", self.curs))
self.assertEqual(expected, self.TIME("13:30:29-01:15:42", self.curs))
def test_parse_datetime_timezone(self):
# Time zone information is ignored.
from mx.DateTime import DateTime
expected = DateTime(2007, 1, 1, 13, 30, 29)
self.assertEqual(
expected, self.DATETIME("2007-01-01 13:30:29+01", self.curs))
self.assertEqual(
expected, self.DATETIME("2007-01-01 13:30:29-01", self.curs))
self.assertEqual(
expected, self.DATETIME("2007-01-01 13:30:29+01:15", self.curs))
self.assertEqual(
expected, self.DATETIME("2007-01-01 13:30:29-01:15", self.curs))
self.assertEqual(
expected, self.DATETIME("2007-01-01 13:30:29+01:15:42", self.curs))
self.assertEqual(
expected, self.DATETIME("2007-01-01 13:30:29-01:15:42", self.curs))
def test_parse_interval(self):
value = self.INTERVAL('42 days 05:50:05', self.curs)
self.assertNotEqual(value, None)
self.assertEqual(value.day, 42)
self.assertEqual(value.hour, 5)
self.assertEqual(value.minute, 50)
self.assertEqual(value.second, 5)
def test_adapt_time(self):
from mx.DateTime import Time
value = self.execute('select (%s)::time::text',
[Time(13, 30, 29)])
self.assertEqual(value, '13:30:29')
def test_adapt_datetime(self):
from mx.DateTime import DateTime
value = self.execute('select (%s)::timestamp::text',
[DateTime(2007, 1, 1, 13, 30, 29.123456)])
self.assertEqual(value, '2007-01-01 13:30:29.123456')
def test_adapt_bc_datetime(self):
from mx.DateTime import DateTime
value = self.execute('select (%s)::timestamp::text',
[DateTime(-41, 1, 1, 13, 30, 29.123456)])
self.assertEqual(value, '0042-01-01 13:30:29.123456 BC')
def test_adapt_timedelta(self):
from mx.DateTime import DateTimeDeltaFrom
value = self.execute('select extract(epoch from (%s)::interval)',
[DateTimeDeltaFrom(days=42,
seconds=45296.123456)])
seconds = math.floor(value)
self.assertEqual(seconds, 3674096)
self.assertEqual(int(round((value - seconds) * 1000000)), 123456)
def test_adapt_megative_timedelta(self):
from mx.DateTime import DateTimeDeltaFrom
value = self.execute('select extract(epoch from (%s)::interval)',
[DateTimeDeltaFrom(days=-42,
seconds=45296.123456)])
seconds = math.floor(value)
self.assertEqual(seconds, -3583504)
self.assertEqual(int(round((value - seconds) * 1000000)), 123456)
# Only run the mx.DateTime tests if psycopg was compiled with support.
if not hasattr(psycopg2._psycopg, 'MXDATETIME'):
del mxDateTimeTests
def test_suite():
return unittest.TestLoader().loadTestsFromName(__name__)
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