454 lines
13 KiB
Python
454 lines
13 KiB
Python
# -*- encoding: utf-8 -*-
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from __future__ import unicode_literals
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from django.core.checks import Error
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from django.db import models
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from django.test.utils import override_settings
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from .base import IsolatedModelsTestCase
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class IndexTogetherTests(IsolatedModelsTestCase):
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def test_non_iterable(self):
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class Model(models.Model):
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class Meta:
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index_together = 42
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errors = Model.check()
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expected = [
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Error(
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"'index_together' must be a list or tuple.",
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hint=None,
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obj=Model,
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id='models.E008',
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),
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]
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self.assertEqual(errors, expected)
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def test_non_list(self):
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class Model(models.Model):
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class Meta:
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index_together = 'not-a-list'
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errors = Model.check()
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expected = [
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Error(
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"'index_together' must be a list or tuple.",
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hint=None,
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obj=Model,
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id='models.E008',
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),
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]
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self.assertEqual(errors, expected)
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def test_list_containing_non_iterable(self):
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class Model(models.Model):
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class Meta:
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index_together = [('a', 'b'), 42]
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errors = Model.check()
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expected = [
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Error(
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"All 'index_together' elements must be lists or tuples.",
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hint=None,
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obj=Model,
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id='models.E009',
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),
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]
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self.assertEqual(errors, expected)
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def test_pointing_to_missing_field(self):
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class Model(models.Model):
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class Meta:
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index_together = [
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["missing_field"],
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]
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errors = Model.check()
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expected = [
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Error(
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"'index_together' refers to the non-existent field 'missing_field'.",
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hint=None,
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obj=Model,
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id='models.E012',
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),
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]
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self.assertEqual(errors, expected)
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def test_pointing_to_m2m_field(self):
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class Model(models.Model):
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m2m = models.ManyToManyField('self')
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class Meta:
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index_together = [
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["m2m"],
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]
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errors = Model.check()
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expected = [
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Error(
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("'index_together' refers to a ManyToManyField 'm2m', but "
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"ManyToManyFields are not permitted in 'index_together'."),
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hint=None,
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obj=Model,
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id='models.E013',
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),
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]
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self.assertEqual(errors, expected)
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# unique_together tests are very similar to index_together tests.
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class UniqueTogetherTests(IsolatedModelsTestCase):
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def test_non_iterable(self):
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class Model(models.Model):
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class Meta:
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unique_together = 42
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errors = Model.check()
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expected = [
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Error(
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"'unique_together' must be a list or tuple.",
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hint=None,
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obj=Model,
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id='models.E010',
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),
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]
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self.assertEqual(errors, expected)
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def test_list_containing_non_iterable(self):
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class Model(models.Model):
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one = models.IntegerField()
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two = models.IntegerField()
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class Meta:
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unique_together = [('a', 'b'), 42]
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errors = Model.check()
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expected = [
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Error(
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"All 'unique_together' elements must be lists or tuples.",
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hint=None,
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obj=Model,
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id='models.E011',
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),
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]
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self.assertEqual(errors, expected)
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def test_non_list(self):
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class Model(models.Model):
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class Meta:
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unique_together = 'not-a-list'
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errors = Model.check()
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expected = [
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Error(
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"'unique_together' must be a list or tuple.",
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hint=None,
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obj=Model,
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id='models.E010',
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),
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]
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self.assertEqual(errors, expected)
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def test_valid_model(self):
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class Model(models.Model):
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one = models.IntegerField()
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two = models.IntegerField()
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class Meta:
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# unique_together can be a simple tuple
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unique_together = ('one', 'two')
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errors = Model.check()
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self.assertEqual(errors, [])
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def test_pointing_to_missing_field(self):
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class Model(models.Model):
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class Meta:
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unique_together = [
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["missing_field"],
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]
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errors = Model.check()
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expected = [
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Error(
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"'unique_together' refers to the non-existent field 'missing_field'.",
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hint=None,
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obj=Model,
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id='models.E012',
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),
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]
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self.assertEqual(errors, expected)
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def test_pointing_to_m2m(self):
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class Model(models.Model):
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m2m = models.ManyToManyField('self')
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class Meta:
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unique_together = [
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["m2m"],
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]
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errors = Model.check()
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expected = [
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Error(
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("'unique_together' refers to a ManyToManyField 'm2m', but "
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"ManyToManyFields are not permitted in 'unique_together'."),
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hint=None,
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obj=Model,
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id='models.E013',
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),
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]
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self.assertEqual(errors, expected)
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class FieldNamesTests(IsolatedModelsTestCase):
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def test_ending_with_underscore(self):
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class Model(models.Model):
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field_ = models.CharField(max_length=10)
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m2m_ = models.ManyToManyField('self')
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errors = Model.check()
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expected = [
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Error(
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'Field names must not end with an underscore.',
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hint=None,
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obj=Model._meta.get_field('field_'),
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id='fields.E001',
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),
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Error(
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'Field names must not end with an underscore.',
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hint=None,
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obj=Model._meta.get_field('m2m_'),
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id='fields.E001',
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),
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]
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self.assertEqual(errors, expected)
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def test_including_separator(self):
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class Model(models.Model):
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some__field = models.IntegerField()
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errors = Model.check()
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expected = [
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Error(
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'Field names must not contain "__".',
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hint=None,
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obj=Model._meta.get_field('some__field'),
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id='fields.E002',
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)
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]
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self.assertEqual(errors, expected)
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def test_pk(self):
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class Model(models.Model):
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pk = models.IntegerField()
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errors = Model.check()
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expected = [
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Error(
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"'pk' is a reserved word that cannot be used as a field name.",
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hint=None,
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obj=Model._meta.get_field('pk'),
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id='fields.E003',
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)
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]
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self.assertEqual(errors, expected)
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class ShadowingFieldsTests(IsolatedModelsTestCase):
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def test_multiinheritance_clash(self):
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class Mother(models.Model):
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clash = models.IntegerField()
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class Father(models.Model):
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clash = models.IntegerField()
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class Child(Mother, Father):
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# Here we have two clashed: id (automatic field) and clash, because
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# both parents define these fields.
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pass
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errors = Child.check()
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expected = [
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Error(
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("The field 'id' from parent model "
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"'invalid_models_tests.mother' clashes with the field 'id' "
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"from parent model 'invalid_models_tests.father'."),
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hint=None,
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obj=Child,
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id='models.E005',
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),
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Error(
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("The field 'clash' from parent model "
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"'invalid_models_tests.mother' clashes with the field 'clash' "
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"from parent model 'invalid_models_tests.father'."),
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hint=None,
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obj=Child,
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id='models.E005',
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)
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]
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self.assertEqual(errors, expected)
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def test_inheritance_clash(self):
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class Parent(models.Model):
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f_id = models.IntegerField()
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class Target(models.Model):
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# This field doesn't result in a clash.
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f_id = models.IntegerField()
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class Child(Parent):
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# This field clashes with parent "f_id" field.
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f = models.ForeignKey(Target)
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errors = Child.check()
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expected = [
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Error(
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("The field 'f' clashes with the field 'f_id' "
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"from model 'invalid_models_tests.parent'."),
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hint=None,
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obj=Child._meta.get_field('f'),
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id='models.E006',
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)
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]
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self.assertEqual(errors, expected)
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def test_id_clash(self):
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class Target(models.Model):
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pass
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class Model(models.Model):
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fk = models.ForeignKey(Target)
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fk_id = models.IntegerField()
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errors = Model.check()
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expected = [
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Error(
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("The field 'fk_id' clashes with the field 'fk' from model "
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"'invalid_models_tests.model'."),
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hint=None,
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obj=Model._meta.get_field('fk_id'),
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id='models.E006',
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)
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]
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self.assertEqual(errors, expected)
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class OtherModelTests(IsolatedModelsTestCase):
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def test_unique_primary_key(self):
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invalid_id = models.IntegerField(primary_key=False)
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class Model(models.Model):
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id = invalid_id
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errors = Model.check()
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expected = [
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Error(
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"'id' can only be used as a field name if the field also sets 'primary_key=True'.",
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hint=None,
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obj=Model,
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id='models.E004',
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),
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]
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self.assertEqual(errors, expected)
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def test_ordering_non_iterable(self):
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class Model(models.Model):
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class Meta:
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ordering = "missing_field"
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errors = Model.check()
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expected = [
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Error(
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("'ordering' must be a tuple or list "
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"(even if you want to order by only one field)."),
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hint=None,
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obj=Model,
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id='models.E014',
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),
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]
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self.assertEqual(errors, expected)
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def test_ordering_pointing_to_missing_field(self):
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class Model(models.Model):
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class Meta:
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ordering = ("missing_field",)
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errors = Model.check()
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expected = [
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Error(
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"'ordering' refers to the non-existent field 'missing_field'.",
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hint=None,
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obj=Model,
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id='models.E015',
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)
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]
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self.assertEqual(errors, expected)
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@override_settings(TEST_SWAPPED_MODEL_BAD_VALUE='not-a-model')
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def test_swappable_missing_app_name(self):
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class Model(models.Model):
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class Meta:
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swappable = 'TEST_SWAPPED_MODEL_BAD_VALUE'
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errors = Model.check()
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expected = [
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Error(
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"'TEST_SWAPPED_MODEL_BAD_VALUE' is not of the form 'app_label.app_name'.",
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hint=None,
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obj=None,
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id='models.E001',
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),
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]
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self.assertEqual(errors, expected)
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@override_settings(TEST_SWAPPED_MODEL_BAD_MODEL='not_an_app.Target')
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def test_swappable_missing_app(self):
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class Model(models.Model):
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class Meta:
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swappable = 'TEST_SWAPPED_MODEL_BAD_MODEL'
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errors = Model.check()
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expected = [
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Error(
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("'TEST_SWAPPED_MODEL_BAD_MODEL' references 'not_an_app.Target', "
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'which has not been installed, or is abstract.'),
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hint=None,
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obj=None,
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id='models.E002',
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),
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]
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self.assertEqual(errors, expected)
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def test_two_m2m_through_same_relationship(self):
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class Person(models.Model):
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pass
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class Group(models.Model):
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primary = models.ManyToManyField(Person,
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through="Membership", related_name="primary")
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secondary = models.ManyToManyField(Person, through="Membership",
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related_name="secondary")
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class Membership(models.Model):
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person = models.ForeignKey(Person)
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group = models.ForeignKey(Group)
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errors = Group.check()
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expected = [
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Error(
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("The model has two many-to-many relations through "
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"the intermediate model 'invalid_models_tests.Membership'."),
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hint=None,
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obj=Group,
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id='models.E003',
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)
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]
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self.assertEqual(errors, expected)
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