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from django.core.exceptions import ValidationError
from django.test import TestCase
from .models import DataModel
class BinaryFieldTests(TestCase):
binary_data = b'\x00\x46\xFE'
def test_set_and_retrieve(self):
data_set = (self.binary_data, memoryview(self.binary_data))
for bdata in data_set:
dm = DataModel(data=bdata)
dm.save()
dm = DataModel.objects.get(pk=dm.pk)
self.assertEqual(bytes(dm.data), bytes(bdata))
# Resave (=update)
dm.save()
dm = DataModel.objects.get(pk=dm.pk)
self.assertEqual(bytes(dm.data), bytes(bdata))
# Test default value
self.assertEqual(bytes(dm.short_data), b'\x08')
def test_max_length(self):
dm = DataModel(short_data=self.binary_data * 4)
with self.assertRaises(ValidationError):
dm.full_clean()
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