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Add failing test for to_representation with explicit default timezone #5821

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Add failing test for to_representation with explicit default timezone #5821

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19 changes: 19 additions & 0 deletions tests/test_fields.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1296,6 +1296,25 @@ def test_current_timezone(self):
assert self.field.default_timezone() == utc


@pytest.mark.skipif(pytz is None, reason='pytz not installed')
@override_settings(TIME_ZONE='UTC', USE_TZ=True)
class TestCustomTimezoneForDateTimeField(TestCase):

@classmethod
def setup_class(cls):
cls.kolkata = pytz.timezone('Asia/Kolkata')
cls.date_format = '%d/%m/%Y %H:%M'

def test_should_render_date_time_in_default_timezone(self):
field = serializers.DateTimeField(default_timezone=self.kolkata, format=self.date_format)
dt = datetime.datetime(2018, 2, 8, 14, 15, 16, tzinfo=pytz.utc)

rendered_date = field.to_representation(dt)
rendered_date_in_timezone = dt.astimezone(self.kolkata).strftime(self.date_format)

assert rendered_date == rendered_date_in_timezone


class TestNaiveDayLightSavingTimeTimeZoneDateTimeField(FieldValues):
"""
Invalid values for `DateTimeField` with datetime in DST shift (non-existing or ambiguous) and timezone with DST.
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