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35 lines
1.1 KiB
Python
35 lines
1.1 KiB
Python
from django.db import transaction
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from django.test import TestCase
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from .models import FloatModel
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class TestFloatField(TestCase):
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def test_float_validates_object(self):
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instance = FloatModel(size=2.5)
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# Try setting float field to unsaved object
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instance.size = instance
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with transaction.atomic():
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with self.assertRaises(TypeError):
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instance.save()
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# Set value to valid and save
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instance.size = 2.5
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instance.save()
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self.assertTrue(instance.id)
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# Set field to object on saved instance
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instance.size = instance
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msg = (
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'Tried to update field model_fields.FloatModel.size with a model '
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'instance, %r. Use a value '
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'compatible with FloatField.'
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) % instance
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with transaction.atomic():
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with self.assertRaisesMessage(TypeError, msg):
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instance.save()
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# Try setting field to object on retrieved object
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obj = FloatModel.objects.get(pk=instance.id)
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obj.size = obj
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with self.assertRaises(TypeError):
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obj.save()
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