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38 lines
1005 B
Python
38 lines
1005 B
Python
# -*- encoding: utf-8 -*-
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from __future__ import unicode_literals
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from types import MethodType
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from django.core.checks import Error
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from django.db import connection, models
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from .base import IsolatedModelsTestCase
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class BackendSpecificChecksTests(IsolatedModelsTestCase):
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def test_check_field(self):
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""" Test if backend specific checks are performed. """
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error = Error('an error', hint=None)
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def mock(self, field, **kwargs):
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return [error]
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class Model(models.Model):
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field = models.IntegerField()
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field = Model._meta.get_field('field')
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# Mock connection.validation.check_field method.
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v = connection.validation
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old_check_field = v.check_field
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v.check_field = MethodType(mock, v)
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try:
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errors = field.check()
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finally:
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# Unmock connection.validation.check_field method.
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v.check_field = old_check_field
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self.assertEqual(errors, [error])
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