Fixed timezones tests for PyYAML 5.3+.
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@ -32,6 +32,12 @@ from .models import (
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AllDayEvent, Event, MaybeEvent, Session, SessionEvent, Timestamp,
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)
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try:
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import yaml
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HAS_YAML = True
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except ImportError:
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HAS_YAML = False
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# These tests use the EAT (Eastern Africa Time) and ICT (Indochina Time)
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# who don't have Daylight Saving Time, so we can represent them easily
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# with fixed offset timezones and use them directly as tzinfo in the
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@ -607,9 +613,10 @@ class SerializationTests(SimpleTestCase):
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# Backend-specific notes:
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# - JSON supports only milliseconds, microseconds will be truncated.
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# - PyYAML dumps the UTC offset correctly for timezone-aware datetimes,
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# but when it loads this representation, it subtracts the offset and
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# returns a naive datetime object in UTC. See ticket #18867.
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# - PyYAML dumps the UTC offset correctly for timezone-aware datetimes.
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# When PyYAML < 5.3 loads this representation, it subtracts the offset
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# and returns a naive datetime object in UTC. PyYAML 5.3+ loads timezones
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# correctly.
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# Tests are adapted to take these quirks into account.
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def assert_python_contains_datetime(self, objects, dt):
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@ -696,7 +703,10 @@ class SerializationTests(SimpleTestCase):
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data = serializers.serialize('yaml', [Event(dt=dt)], default_flow_style=None)
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self.assert_yaml_contains_datetime(data, "2011-09-01 17:20:30.405060+07:00")
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obj = next(serializers.deserialize('yaml', data)).object
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self.assertEqual(obj.dt.replace(tzinfo=UTC), dt)
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if HAS_YAML and yaml.__version__ < '5.3':
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self.assertEqual(obj.dt.replace(tzinfo=UTC), dt)
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else:
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self.assertEqual(obj.dt, dt)
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def test_aware_datetime_in_utc(self):
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dt = datetime.datetime(2011, 9, 1, 10, 20, 30, tzinfo=UTC)
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@ -744,7 +754,10 @@ class SerializationTests(SimpleTestCase):
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data = serializers.serialize('yaml', [Event(dt=dt)], default_flow_style=None)
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self.assert_yaml_contains_datetime(data, "2011-09-01 13:20:30+03:00")
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obj = next(serializers.deserialize('yaml', data)).object
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self.assertEqual(obj.dt.replace(tzinfo=UTC), dt)
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if HAS_YAML and yaml.__version__ < '5.3':
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self.assertEqual(obj.dt.replace(tzinfo=UTC), dt)
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else:
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self.assertEqual(obj.dt, dt)
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def test_aware_datetime_in_other_timezone(self):
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dt = datetime.datetime(2011, 9, 1, 17, 20, 30, tzinfo=ICT)
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@ -768,7 +781,10 @@ class SerializationTests(SimpleTestCase):
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data = serializers.serialize('yaml', [Event(dt=dt)], default_flow_style=None)
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self.assert_yaml_contains_datetime(data, "2011-09-01 17:20:30+07:00")
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obj = next(serializers.deserialize('yaml', data)).object
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self.assertEqual(obj.dt.replace(tzinfo=UTC), dt)
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if HAS_YAML and yaml.__version__ < '5.3':
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self.assertEqual(obj.dt.replace(tzinfo=UTC), dt)
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else:
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self.assertEqual(obj.dt, dt)
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@override_settings(DATETIME_FORMAT='c', TIME_ZONE='Africa/Nairobi', USE_L10N=False, USE_TZ=True)
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