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from datetime import datetime
from django.db.models import Value
from django.db.models.fields import DateTimeField
from django.db.models.lookups import YearComparisonLookup
from django.test import SimpleTestCase
class YearComparisonLookupTests(SimpleTestCase):
def test_get_bound(self):
look_up = YearComparisonLookup(
lhs=Value(datetime(2010, 1, 1, 0, 0, 0), output_field=DateTimeField()),
rhs=Value(datetime(2010, 1, 1, 23, 59, 59), output_field=DateTimeField()),
)
msg = 'subclasses of YearComparisonLookup must provide a get_bound() method'
with self.assertRaisesMessage(NotImplementedError, msg):
look_up.get_bound(datetime(2010, 1, 1, 0, 0, 0), datetime(2010, 1, 1, 23, 59, 59))
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