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from django.core.exceptions import ValidationError
from django.db import models
from django.test import TestCase
from .models import GenericIPAddress
class GenericIPAddressFieldTests(TestCase):
def test_genericipaddressfield_formfield_protocol(self):
"""
GenericIPAddressField with a specified protocol does not generate a
formfield without a protocol.
"""
model_field = models.GenericIPAddressField(protocol='IPv4')
form_field = model_field.formfield()
with self.assertRaises(ValidationError):
form_field.clean('::1')
model_field = models.GenericIPAddressField(protocol='IPv6')
form_field = model_field.formfield()
with self.assertRaises(ValidationError):
form_field.clean('127.0.0.1')
def test_null_value(self):
"""
Null values should be resolved to None.
"""
GenericIPAddress.objects.create()
o = GenericIPAddress.objects.get()
self.assertIsNone(o.ip)
def test_blank_string_saved_as_null(self):
o = GenericIPAddress.objects.create(ip='')
o.refresh_from_db()
self.assertIsNone(o.ip)
GenericIPAddress.objects.update(ip='')
o.refresh_from_db()
self.assertIsNone(o.ip)
def test_save_load(self):
instance = GenericIPAddress.objects.create(ip='::1')
loaded = GenericIPAddress.objects.get()
self.assertEqual(loaded.ip, instance.ip)
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