mirror of
https://github.com/Hopiu/django-model-utils.git
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71 lines
3.1 KiB
Python
71 lines
3.1 KiB
Python
from __future__ import unicode_literals
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import django
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from django.test import TestCase
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from tests.models import ModelWithCustomDescriptor
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class CustomDescriptorTests(TestCase):
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def setUp(self):
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self.instance = ModelWithCustomDescriptor.objects.create(
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custom_field='1',
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tracked_custom_field='1',
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regular_field=1,
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tracked_regular_field=1,
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)
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def test_custom_descriptor_works(self):
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instance = self.instance
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self.assertEqual(instance.custom_field, '1')
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self.assertEqual(instance.__dict__['custom_field'], 1)
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self.assertEqual(instance.regular_field, 1)
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instance.custom_field = 2
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self.assertEqual(instance.custom_field, '2')
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self.assertEqual(instance.__dict__['custom_field'], 2)
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instance.save()
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instance = ModelWithCustomDescriptor.objects.get(pk=instance.pk)
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self.assertEqual(instance.custom_field, '2')
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self.assertEqual(instance.__dict__['custom_field'], 2)
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def test_deferred(self):
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instance = ModelWithCustomDescriptor.objects.only('id').get(
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pk=self.instance.pk)
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if django.VERSION >= (1, 10):
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self.assertIn('custom_field', instance.get_deferred_fields())
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else:
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self.assertIn('custom_field', instance._deferred_fields)
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self.assertEqual(instance.custom_field, '1')
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if django.VERSION >= (1, 10):
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self.assertNotIn('custom_field', instance.get_deferred_fields())
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else:
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self.assertNotIn('custom_field', instance._deferred_fields)
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self.assertEqual(instance.regular_field, 1)
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self.assertEqual(instance.tracked_custom_field, '1')
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self.assertEqual(instance.tracked_regular_field, 1)
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self.assertFalse(instance.tracker.has_changed('tracked_custom_field'))
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self.assertFalse(instance.tracker.has_changed('tracked_regular_field'))
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instance.tracked_custom_field = 2
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instance.tracked_regular_field = 2
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self.assertTrue(instance.tracker.has_changed('tracked_custom_field'))
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self.assertTrue(instance.tracker.has_changed('tracked_regular_field'))
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instance.save()
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instance = ModelWithCustomDescriptor.objects.get(pk=instance.pk)
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self.assertEqual(instance.custom_field, '1')
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self.assertEqual(instance.regular_field, 1)
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self.assertEqual(instance.tracked_custom_field, '2')
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self.assertEqual(instance.tracked_regular_field, 2)
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instance = ModelWithCustomDescriptor.objects.only('id').get(pk=instance.pk)
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if django.VERSION >= (1, 10):
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# This fails on 1.8 and 1.9, which is a bug in the deferred field
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# implementation on those versions.
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instance.tracked_custom_field = 3
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self.assertEqual(instance.tracked_custom_field, '3')
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self.assertTrue(instance.tracker.has_changed('tracked_custom_field'))
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del instance.tracked_custom_field
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self.assertEqual(instance.tracked_custom_field, '2')
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self.assertFalse(instance.tracker.has_changed('tracked_custom_field'))
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