from __future__ import unicode_literals from datetime import datetime from unittest import skipIf from django.conf import settings from django.db import connection from django.db.models import DateField, DateTimeField, IntegerField, TimeField from django.db.models.functions import ( Extract, ExtractDay, ExtractHour, ExtractMinute, ExtractMonth, ExtractSecond, ExtractWeekDay, ExtractYear, Trunc, TruncDate, TruncDay, TruncHour, TruncMinute, TruncMonth, TruncSecond, TruncTime, TruncYear, ) from django.test import TestCase, override_settings from django.utils import timezone from .models import DTModel try: import pytz except ImportError: pytz = None def microsecond_support(value): return value if connection.features.supports_microsecond_precision else value.replace(microsecond=0) def truncate_to(value, kind, tzinfo=None): # Convert to target timezone before truncation if tzinfo is not None: value = value.astimezone(tzinfo) def truncate(value, kind): if kind == 'second': return value.replace(microsecond=0) if kind == 'minute': return value.replace(second=0, microsecond=0) if kind == 'hour': return value.replace(minute=0, second=0, microsecond=0) if kind == 'day': if isinstance(value, datetime): return value.replace(hour=0, minute=0, second=0, microsecond=0) return value if kind == 'month': if isinstance(value, datetime): return value.replace(day=1, hour=0, minute=0, second=0, microsecond=0) return value.replace(day=1) # otherwise, truncate to year if isinstance(value, datetime): return value.replace(month=1, day=1, hour=0, minute=0, second=0, microsecond=0) return value.replace(month=1, day=1) value = truncate(value, kind) if tzinfo is not None: # If there was a daylight saving transition, then reset the timezone. value = timezone.make_aware(value.replace(tzinfo=None), tzinfo) return value @override_settings(USE_TZ=False) class DateFunctionTests(TestCase): def create_model(self, start_datetime, end_datetime): return DTModel.objects.create( name=start_datetime.isoformat(), start_datetime=start_datetime, end_datetime=end_datetime, start_date=start_datetime.date(), end_date=end_datetime.date(), start_time=start_datetime.time(), end_time=end_datetime.time(), duration=(end_datetime - start_datetime), ) def test_extract_year_exact_lookup(self): """ Extract year uses a BETWEEN filter to compare the year to allow indexes to be used. """ start_datetime = datetime(2015, 6, 15, 14, 10) end_datetime = datetime(2016, 6, 15, 14, 10) if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) qs = DTModel.objects.filter(start_datetime__year__exact=2015) self.assertEqual(qs.count(), 1) query_string = str(qs.query).lower() self.assertEqual(query_string.count(' between '), 1) self.assertEqual(query_string.count('extract'), 0) # exact is implied and should be the same qs = DTModel.objects.filter(start_datetime__year=2015) self.assertEqual(qs.count(), 1) query_string = str(qs.query).lower() self.assertEqual(query_string.count(' between '), 1) self.assertEqual(query_string.count('extract'), 0) # date and datetime fields should behave the same qs = DTModel.objects.filter(start_date__year=2015) self.assertEqual(qs.count(), 1) query_string = str(qs.query).lower() self.assertEqual(query_string.count(' between '), 1) self.assertEqual(query_string.count('extract'), 0) def test_extract_year_greaterthan_lookup(self): start_datetime = datetime(2015, 6, 15, 14, 10) end_datetime = datetime(2016, 6, 15, 14, 10) if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) qs = DTModel.objects.filter(start_datetime__year__gt=2015) self.assertEqual(qs.count(), 1) self.assertEqual(str(qs.query).lower().count('extract'), 0) qs = DTModel.objects.filter(start_datetime__year__gte=2015) self.assertEqual(qs.count(), 2) self.assertEqual(str(qs.query).lower().count('extract'), 0) def test_extract_year_lessthan_lookup(self): start_datetime = datetime(2015, 6, 15, 14, 10) end_datetime = datetime(2016, 6, 15, 14, 10) if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) qs = DTModel.objects.filter(start_datetime__year__lt=2016) self.assertEqual(qs.count(), 1) self.assertEqual(str(qs.query).count('extract'), 0) qs = DTModel.objects.filter(start_datetime__year__lte=2016) self.assertEqual(qs.count(), 2) self.assertEqual(str(qs.query).count('extract'), 0) def test_extract_func(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 14, 30, 50, 321)) end_datetime = microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)) if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) with self.assertRaisesMessage(ValueError, 'lookup_name must be provided'): Extract('start_datetime') msg = 'Extract input expression must be DateField, DateTimeField, or TimeField.' with self.assertRaisesMessage(ValueError, msg): list(DTModel.objects.annotate(extracted=Extract('name', 'hour'))) with self.assertRaisesMessage( ValueError, "Cannot extract time component 'second' from DateField 'start_date'."): list(DTModel.objects.annotate(extracted=Extract('start_date', 'second'))) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=Extract('start_datetime', 'year')).order_by('start_datetime'), [(start_datetime, start_datetime.year), (end_datetime, end_datetime.year)], lambda m: (m.start_datetime, m.extracted) ) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=Extract('start_datetime', 'month')).order_by('start_datetime'), [(start_datetime, start_datetime.month), (end_datetime, end_datetime.month)], lambda m: (m.start_datetime, m.extracted) ) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=Extract('start_datetime', 'day')).order_by('start_datetime'), [(start_datetime, start_datetime.day), (end_datetime, end_datetime.day)], lambda m: (m.start_datetime, m.extracted) ) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=Extract('start_datetime', 'week_day')).order_by('start_datetime'), [ (start_datetime, (start_datetime.isoweekday() % 7) + 1), (end_datetime, (end_datetime.isoweekday() % 7) + 1) ], lambda m: (m.start_datetime, m.extracted) ) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=Extract('start_datetime', 'hour')).order_by('start_datetime'), [(start_datetime, start_datetime.hour), (end_datetime, end_datetime.hour)], lambda m: (m.start_datetime, m.extracted) ) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=Extract('start_datetime', 'minute')).order_by('start_datetime'), [(start_datetime, start_datetime.minute), (end_datetime, end_datetime.minute)], lambda m: (m.start_datetime, m.extracted) ) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=Extract('start_datetime', 'second')).order_by('start_datetime'), [(start_datetime, start_datetime.second), (end_datetime, end_datetime.second)], lambda m: (m.start_datetime, m.extracted) ) self.assertEqual(DTModel.objects.filter(start_datetime__year=Extract('start_datetime', 'year')).count(), 2) self.assertEqual(DTModel.objects.filter(start_datetime__hour=Extract('start_datetime', 'hour')).count(), 2) self.assertEqual(DTModel.objects.filter(start_date__month=Extract('start_date', 'month')).count(), 2) self.assertEqual(DTModel.objects.filter(start_time__hour=Extract('start_time', 'hour')).count(), 2) def test_extract_year_func(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 14, 30, 50, 321)) end_datetime = microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)) if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=ExtractYear('start_datetime')).order_by('start_datetime'), [(start_datetime, start_datetime.year), (end_datetime, end_datetime.year)], lambda m: (m.start_datetime, m.extracted) ) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=ExtractYear('start_date')).order_by('start_datetime'), [(start_datetime, start_datetime.year), (end_datetime, end_datetime.year)], lambda m: (m.start_datetime, m.extracted) ) self.assertEqual(DTModel.objects.filter(start_datetime__year=ExtractYear('start_datetime')).count(), 2) def test_extract_month_func(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 14, 30, 50, 321)) end_datetime = microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)) if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=ExtractMonth('start_datetime')).order_by('start_datetime'), [(start_datetime, start_datetime.month), (end_datetime, end_datetime.month)], lambda m: (m.start_datetime, m.extracted) ) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=ExtractMonth('start_date')).order_by('start_datetime'), [(start_datetime, start_datetime.month), (end_datetime, end_datetime.month)], lambda m: (m.start_datetime, m.extracted) ) self.assertEqual(DTModel.objects.filter(start_datetime__month=ExtractMonth('start_datetime')).count(), 2) def test_extract_day_func(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 14, 30, 50, 321)) end_datetime = microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)) if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=ExtractDay('start_datetime')).order_by('start_datetime'), [(start_datetime, start_datetime.day), (end_datetime, end_datetime.day)], lambda m: (m.start_datetime, m.extracted) ) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=ExtractDay('start_date')).order_by('start_datetime'), [(start_datetime, start_datetime.day), (end_datetime, end_datetime.day)], lambda m: (m.start_datetime, m.extracted) ) self.assertEqual(DTModel.objects.filter(start_datetime__day=ExtractDay('start_datetime')).count(), 2) def test_extract_weekday_func(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 14, 30, 50, 321)) end_datetime = microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)) if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=ExtractWeekDay('start_datetime')).order_by('start_datetime'), [ (start_datetime, (start_datetime.isoweekday() % 7) + 1), (end_datetime, (end_datetime.isoweekday() % 7) + 1), ], lambda m: (m.start_datetime, m.extracted) ) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=ExtractWeekDay('start_date')).order_by('start_datetime'), [ (start_datetime, (start_datetime.isoweekday() % 7) + 1), (end_datetime, (end_datetime.isoweekday() % 7) + 1), ], lambda m: (m.start_datetime, m.extracted) ) self.assertEqual(DTModel.objects.filter(start_datetime__week_day=ExtractWeekDay('start_datetime')).count(), 2) def test_extract_hour_func(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 14, 30, 50, 321)) end_datetime = microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)) if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=ExtractHour('start_datetime')).order_by('start_datetime'), [(start_datetime, start_datetime.hour), (end_datetime, end_datetime.hour)], lambda m: (m.start_datetime, m.extracted) ) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=ExtractHour('start_time')).order_by('start_datetime'), [(start_datetime, start_datetime.hour), (end_datetime, end_datetime.hour)], lambda m: (m.start_datetime, m.extracted) ) self.assertEqual(DTModel.objects.filter(start_datetime__hour=ExtractHour('start_datetime')).count(), 2) def test_extract_minute_func(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 14, 30, 50, 321)) end_datetime = microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)) if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=ExtractMinute('start_datetime')).order_by('start_datetime'), [(start_datetime, start_datetime.minute), (end_datetime, end_datetime.minute)], lambda m: (m.start_datetime, m.extracted) ) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=ExtractMinute('start_time')).order_by('start_datetime'), [(start_datetime, start_datetime.minute), (end_datetime, end_datetime.minute)], lambda m: (m.start_datetime, m.extracted) ) self.assertEqual(DTModel.objects.filter(start_datetime__minute=ExtractMinute('start_datetime')).count(), 2) def test_extract_second_func(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 14, 30, 50, 321)) end_datetime = microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)) if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=ExtractSecond('start_datetime')).order_by('start_datetime'), [(start_datetime, start_datetime.second), (end_datetime, end_datetime.second)], lambda m: (m.start_datetime, m.extracted) ) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=ExtractSecond('start_time')).order_by('start_datetime'), [(start_datetime, start_datetime.second), (end_datetime, end_datetime.second)], lambda m: (m.start_datetime, m.extracted) ) self.assertEqual(DTModel.objects.filter(start_datetime__second=ExtractSecond('start_datetime')).count(), 2) def test_trunc_func(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 14, 30, 50, 321)) end_datetime = microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)) if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) msg = 'output_field must be either DateField, TimeField, or DateTimeField' with self.assertRaisesMessage(ValueError, msg): list(DTModel.objects.annotate(truncated=Trunc('start_datetime', 'year', output_field=IntegerField()))) with self.assertRaisesMessage(AssertionError, "'name' isn't a DateField, TimeField, or DateTimeField."): list(DTModel.objects.annotate(truncated=Trunc('name', 'year', output_field=DateTimeField()))) with self.assertRaisesMessage(ValueError, "Cannot truncate DateField 'start_date' to DateTimeField"): list(DTModel.objects.annotate(truncated=Trunc('start_date', 'second'))) with self.assertRaisesMessage(ValueError, "Cannot truncate TimeField 'start_time' to DateTimeField"): list(DTModel.objects.annotate(truncated=Trunc('start_time', 'month'))) with self.assertRaisesMessage(ValueError, "Cannot truncate DateField 'start_date' to DateTimeField"): list(DTModel.objects.annotate(truncated=Trunc('start_date', 'month', output_field=DateTimeField()))) with self.assertRaisesMessage(ValueError, "Cannot truncate TimeField 'start_time' to DateTimeField"): list(DTModel.objects.annotate(truncated=Trunc('start_time', 'second', output_field=DateTimeField()))) def test_datetime_kind(kind): self.assertQuerysetEqual( DTModel.objects.annotate( truncated=Trunc('start_datetime', kind, output_field=DateTimeField()) ).order_by('start_datetime'), [ (start_datetime, truncate_to(start_datetime, kind)), (end_datetime, truncate_to(end_datetime, kind)) ], lambda m: (m.start_datetime, m.truncated) ) def test_date_kind(kind): self.assertQuerysetEqual( DTModel.objects.annotate( truncated=Trunc('start_date', kind, output_field=DateField()) ).order_by('start_datetime'), [ (start_datetime, truncate_to(start_datetime.date(), kind)), (end_datetime, truncate_to(end_datetime.date(), kind)) ], lambda m: (m.start_datetime, m.truncated) ) def test_time_kind(kind): self.assertQuerysetEqual( DTModel.objects.annotate( truncated=Trunc('start_time', kind, output_field=TimeField()) ).order_by('start_datetime'), [ (start_datetime, truncate_to(start_datetime.time(), kind)), (end_datetime, truncate_to(end_datetime.time(), kind)) ], lambda m: (m.start_datetime, m.truncated) ) test_date_kind('year') test_date_kind('month') test_date_kind('day') test_time_kind('hour') test_time_kind('minute') test_time_kind('second') test_datetime_kind('year') test_datetime_kind('month') test_datetime_kind('day') test_datetime_kind('hour') test_datetime_kind('minute') test_datetime_kind('second') qs = DTModel.objects.filter(start_datetime__date=Trunc('start_datetime', 'day', output_field=DateField())) self.assertEqual(qs.count(), 2) def test_trunc_year_func(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 14, 30, 50, 321)) end_datetime = truncate_to(microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)), 'year') if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=TruncYear('start_datetime')).order_by('start_datetime'), [ (start_datetime, truncate_to(start_datetime, 'year')), (end_datetime, truncate_to(end_datetime, 'year')), ], lambda m: (m.start_datetime, m.extracted) ) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=TruncYear('start_date')).order_by('start_datetime'), [ (start_datetime, truncate_to(start_datetime.date(), 'year')), (end_datetime, truncate_to(end_datetime.date(), 'year')), ], lambda m: (m.start_datetime, m.extracted) ) self.assertEqual(DTModel.objects.filter(start_datetime=TruncYear('start_datetime')).count(), 1) with self.assertRaisesMessage(ValueError, "Cannot truncate TimeField 'start_time' to DateTimeField"): list(DTModel.objects.annotate(truncated=TruncYear('start_time'))) with self.assertRaisesMessage(ValueError, "Cannot truncate TimeField 'start_time' to DateTimeField"): list(DTModel.objects.annotate(truncated=TruncYear('start_time', output_field=TimeField()))) def test_trunc_month_func(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 14, 30, 50, 321)) end_datetime = truncate_to(microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)), 'month') if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=TruncMonth('start_datetime')).order_by('start_datetime'), [ (start_datetime, truncate_to(start_datetime, 'month')), (end_datetime, truncate_to(end_datetime, 'month')), ], lambda m: (m.start_datetime, m.extracted) ) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=TruncMonth('start_date')).order_by('start_datetime'), [ (start_datetime, truncate_to(start_datetime.date(), 'month')), (end_datetime, truncate_to(end_datetime.date(), 'month')), ], lambda m: (m.start_datetime, m.extracted) ) self.assertEqual(DTModel.objects.filter(start_datetime=TruncMonth('start_datetime')).count(), 1) with self.assertRaisesMessage(ValueError, "Cannot truncate TimeField 'start_time' to DateTimeField"): list(DTModel.objects.annotate(truncated=TruncMonth('start_time'))) with self.assertRaisesMessage(ValueError, "Cannot truncate TimeField 'start_time' to DateTimeField"): list(DTModel.objects.annotate(truncated=TruncMonth('start_time', output_field=TimeField()))) def test_trunc_date_func(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 14, 30, 50, 321)) end_datetime = microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)) if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=TruncDate('start_datetime')).order_by('start_datetime'), [ (start_datetime, start_datetime.date()), (end_datetime, end_datetime.date()), ], lambda m: (m.start_datetime, m.extracted) ) self.assertEqual(DTModel.objects.filter(start_datetime__date=TruncDate('start_datetime')).count(), 2) with self.assertRaisesMessage(ValueError, "Cannot truncate TimeField 'start_time' to DateField"): list(DTModel.objects.annotate(truncated=TruncDate('start_time'))) with self.assertRaisesMessage(ValueError, "Cannot truncate TimeField 'start_time' to DateField"): list(DTModel.objects.annotate(truncated=TruncDate('start_time', output_field=TimeField()))) def test_trunc_time_func(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 14, 30, 50, 321)) end_datetime = microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)) if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=TruncTime('start_datetime')).order_by('start_datetime'), [ (start_datetime, start_datetime.time()), (end_datetime, end_datetime.time()), ], lambda m: (m.start_datetime, m.extracted) ) self.assertEqual(DTModel.objects.filter(start_datetime__time=TruncTime('start_datetime')).count(), 2) with self.assertRaisesMessage(ValueError, "Cannot truncate DateField 'start_date' to TimeField"): list(DTModel.objects.annotate(truncated=TruncTime('start_date'))) with self.assertRaisesMessage(ValueError, "Cannot truncate DateField 'start_date' to TimeField"): list(DTModel.objects.annotate(truncated=TruncTime('start_date', output_field=DateField()))) def test_trunc_day_func(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 14, 30, 50, 321)) end_datetime = truncate_to(microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)), 'day') if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=TruncDay('start_datetime')).order_by('start_datetime'), [ (start_datetime, truncate_to(start_datetime, 'day')), (end_datetime, truncate_to(end_datetime, 'day')), ], lambda m: (m.start_datetime, m.extracted) ) self.assertEqual(DTModel.objects.filter(start_datetime=TruncDay('start_datetime')).count(), 1) with self.assertRaisesMessage(ValueError, "Cannot truncate TimeField 'start_time' to DateTimeField"): list(DTModel.objects.annotate(truncated=TruncDay('start_time'))) with self.assertRaisesMessage(ValueError, "Cannot truncate TimeField 'start_time' to DateTimeField"): list(DTModel.objects.annotate(truncated=TruncDay('start_time', output_field=TimeField()))) def test_trunc_hour_func(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 14, 30, 50, 321)) end_datetime = truncate_to(microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)), 'hour') if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=TruncHour('start_datetime')).order_by('start_datetime'), [ (start_datetime, truncate_to(start_datetime, 'hour')), (end_datetime, truncate_to(end_datetime, 'hour')), ], lambda m: (m.start_datetime, m.extracted) ) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=TruncHour('start_time')).order_by('start_datetime'), [ (start_datetime, truncate_to(start_datetime.time(), 'hour')), (end_datetime, truncate_to(end_datetime.time(), 'hour')), ], lambda m: (m.start_datetime, m.extracted) ) self.assertEqual(DTModel.objects.filter(start_datetime=TruncHour('start_datetime')).count(), 1) with self.assertRaisesMessage(ValueError, "Cannot truncate DateField 'start_date' to DateTimeField"): list(DTModel.objects.annotate(truncated=TruncHour('start_date'))) with self.assertRaisesMessage(ValueError, "Cannot truncate DateField 'start_date' to DateTimeField"): list(DTModel.objects.annotate(truncated=TruncHour('start_date', output_field=DateField()))) def test_trunc_minute_func(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 14, 30, 50, 321)) end_datetime = truncate_to(microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)), 'minute') if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=TruncMinute('start_datetime')).order_by('start_datetime'), [ (start_datetime, truncate_to(start_datetime, 'minute')), (end_datetime, truncate_to(end_datetime, 'minute')), ], lambda m: (m.start_datetime, m.extracted) ) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=TruncMinute('start_time')).order_by('start_datetime'), [ (start_datetime, truncate_to(start_datetime.time(), 'minute')), (end_datetime, truncate_to(end_datetime.time(), 'minute')), ], lambda m: (m.start_datetime, m.extracted) ) self.assertEqual(DTModel.objects.filter(start_datetime=TruncMinute('start_datetime')).count(), 1) with self.assertRaisesMessage(ValueError, "Cannot truncate DateField 'start_date' to DateTimeField"): list(DTModel.objects.annotate(truncated=TruncMinute('start_date'))) with self.assertRaisesMessage(ValueError, "Cannot truncate DateField 'start_date' to DateTimeField"): list(DTModel.objects.annotate(truncated=TruncMinute('start_date', output_field=DateField()))) def test_trunc_second_func(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 14, 30, 50, 321)) end_datetime = truncate_to(microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)), 'second') if settings.USE_TZ: start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=TruncSecond('start_datetime')).order_by('start_datetime'), [ (start_datetime, truncate_to(start_datetime, 'second')), (end_datetime, truncate_to(end_datetime, 'second')) ], lambda m: (m.start_datetime, m.extracted) ) self.assertQuerysetEqual( DTModel.objects.annotate(extracted=TruncSecond('start_time')).order_by('start_datetime'), [ (start_datetime, truncate_to(start_datetime.time(), 'second')), (end_datetime, truncate_to(end_datetime.time(), 'second')) ], lambda m: (m.start_datetime, m.extracted) ) result = 1 if connection.features.supports_microsecond_precision else 2 self.assertEqual(DTModel.objects.filter(start_datetime=TruncSecond('start_datetime')).count(), result) with self.assertRaisesMessage(ValueError, "Cannot truncate DateField 'start_date' to DateTimeField"): list(DTModel.objects.annotate(truncated=TruncSecond('start_date'))) with self.assertRaisesMessage(ValueError, "Cannot truncate DateField 'start_date' to DateTimeField"): list(DTModel.objects.annotate(truncated=TruncSecond('start_date', output_field=DateField()))) @skipIf(pytz is None, "this test requires pytz") @override_settings(USE_TZ=True, TIME_ZONE='UTC') class DateFunctionWithTimeZoneTests(DateFunctionTests): def test_extract_func_with_timezone(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 23, 30, 1, 321)) end_datetime = microsecond_support(datetime(2015, 6, 16, 13, 11, 27, 123)) start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) melb = pytz.timezone('Australia/Melbourne') qs = DTModel.objects.annotate( day=Extract('start_datetime', 'day'), day_melb=Extract('start_datetime', 'day', tzinfo=melb), weekday=ExtractWeekDay('start_datetime'), weekday_melb=ExtractWeekDay('start_datetime', tzinfo=melb), hour=ExtractHour('start_datetime'), hour_melb=ExtractHour('start_datetime', tzinfo=melb), ).order_by('start_datetime') utc_model = qs.get() self.assertEqual(utc_model.day, 15) self.assertEqual(utc_model.day_melb, 16) self.assertEqual(utc_model.weekday, 2) self.assertEqual(utc_model.weekday_melb, 3) self.assertEqual(utc_model.hour, 23) self.assertEqual(utc_model.hour_melb, 9) with timezone.override(melb): melb_model = qs.get() self.assertEqual(melb_model.day, 16) self.assertEqual(melb_model.day_melb, 16) self.assertEqual(melb_model.weekday, 3) self.assertEqual(melb_model.weekday_melb, 3) self.assertEqual(melb_model.hour, 9) self.assertEqual(melb_model.hour_melb, 9) def test_extract_func_explicit_timezone_priority(self): start_datetime = microsecond_support(datetime(2015, 6, 15, 23, 30, 1, 321)) end_datetime = microsecond_support(datetime(2015, 6, 16, 13, 11, 27, 123)) start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) melb = pytz.timezone('Australia/Melbourne') with timezone.override(melb): model = DTModel.objects.annotate( day_melb=Extract('start_datetime', 'day'), day_utc=Extract('start_datetime', 'day', tzinfo=timezone.utc), ).order_by('start_datetime').get() self.assertEqual(model.day_melb, 16) self.assertEqual(model.day_utc, 15) def test_trunc_timezone_applied_before_truncation(self): start_datetime = microsecond_support(datetime(2016, 1, 1, 1, 30, 50, 321)) end_datetime = microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)) start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) melb = pytz.timezone('Australia/Melbourne') pacific = pytz.timezone('US/Pacific') model = DTModel.objects.annotate( melb_year=TruncYear('start_datetime', tzinfo=melb), pacific_year=TruncYear('start_datetime', tzinfo=pacific), ).order_by('start_datetime').get() self.assertEqual(model.start_datetime, start_datetime) self.assertEqual(model.melb_year, truncate_to(start_datetime, 'year', melb)) self.assertEqual(model.pacific_year, truncate_to(start_datetime, 'year', pacific)) self.assertEqual(model.start_datetime.year, 2016) self.assertEqual(model.melb_year.year, 2016) self.assertEqual(model.pacific_year.year, 2015) def test_trunc_func_with_timezone(self): """ If the truncated datetime transitions to a different offset (daylight saving) then the returned value will have that new timezone/offset. """ start_datetime = microsecond_support(datetime(2015, 6, 15, 14, 30, 50, 321)) end_datetime = microsecond_support(datetime(2016, 6, 15, 14, 10, 50, 123)) start_datetime = timezone.make_aware(start_datetime, is_dst=False) end_datetime = timezone.make_aware(end_datetime, is_dst=False) self.create_model(start_datetime, end_datetime) self.create_model(end_datetime, start_datetime) melb = pytz.timezone('Australia/Melbourne') def test_datetime_kind(kind, tzinfo=melb): self.assertQuerysetEqual( DTModel.objects.annotate( truncated=Trunc('start_datetime', kind, output_field=DateTimeField(), tzinfo=melb) ).order_by('start_datetime'), [ (start_datetime, truncate_to(start_datetime.astimezone(melb), kind, melb)), (end_datetime, truncate_to(end_datetime.astimezone(melb), kind, melb)) ], lambda m: (m.start_datetime, m.truncated) ) def test_date_kind(kind, tzinfo=melb): self.assertQuerysetEqual( DTModel.objects.annotate( truncated=Trunc('start_date', kind, output_field=DateField(), tzinfo=melb) ).order_by('start_datetime'), [ (start_datetime, truncate_to(start_datetime.date(), kind)), (end_datetime, truncate_to(end_datetime.date(), kind)) ], lambda m: (m.start_datetime, m.truncated) ) def test_time_kind(kind, tzinfo=melb): self.assertQuerysetEqual( DTModel.objects.annotate( truncated=Trunc('start_time', kind, output_field=TimeField(), tzinfo=melb) ).order_by('start_datetime'), [ (start_datetime, truncate_to(start_datetime.time(), kind)), (end_datetime, truncate_to(end_datetime.time(), kind)) ], lambda m: (m.start_datetime, m.truncated) ) test_date_kind('year') test_date_kind('month') test_date_kind('day') test_time_kind('hour') test_time_kind('minute') test_time_kind('second') test_datetime_kind('year') test_datetime_kind('month') test_datetime_kind('day') test_datetime_kind('hour') test_datetime_kind('minute') test_datetime_kind('second') qs = DTModel.objects.filter(start_datetime__date=Trunc('start_datetime', 'day', output_field=DateField())) self.assertEqual(qs.count(), 2)