mirror of https://github.com/django/django.git
445 lines
13 KiB
Python
445 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='E006',
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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='E006',
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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 = [
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'non-iterable',
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'second-non-iterable',
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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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'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='E007',
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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" points to a missing field named "missing_field".',
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hint='Ensure that you did not misspell the field name.',
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obj=Model,
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id='E010',
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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 m2m "m2m" field, but '
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'ManyToManyFields are not supported in "index_together".'),
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hint=None,
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obj=Model,
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id='E011',
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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='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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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='E009',
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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" points to a missing field named "missing_field".',
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hint='Ensure that you did not misspell the field name.',
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obj=Model,
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id='E010',
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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 m2m "m2m" field, but '
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'ManyToManyFields are not supported in "unique_together".'),
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hint=None,
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obj=Model,
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id='E011',
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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 underscores.',
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hint=None,
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obj=Model._meta.get_field('field_'),
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id='E001',
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),
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Error(
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'Field names must not end with underscores.',
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hint=None,
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obj=Model._meta.get_field('m2m_'),
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id='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='E052',
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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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'Cannot use "pk" as a field name since it is a reserved name.',
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hint=None,
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obj=Model._meta.get_field('pk'),
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id='E051',
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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='E053',
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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='E053',
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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 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='E054',
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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 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='E054',
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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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('You cannot use "id" as a field name, because each model '
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'automatically gets an "id" field if none of the fields '
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'have primary_key=True.'),
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hint='Remove or rename "id" field or add primary_key=True to a field.',
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obj=Model,
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id='E005',
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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='E012',
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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" pointing to a missing "missing_field" field.',
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hint='Ensure that you did not misspell the field name.',
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obj=Model,
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id='E013',
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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=Model,
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id='E002',
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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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('The model has been swapped out for not_an_app.Target '
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'which has not been installed or is abstract.'),
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hint=('Ensure that you did not misspell the model name and '
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'the app name as well as the model is not abstract. Does '
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'your INSTALLED_APPS setting contain the "not_an_app" app?'),
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obj=Model,
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id='E003',
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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 intermediary Membership model, which is not permitted.'),
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hint=None,
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obj=Group,
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id='E004',
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)
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]
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self.assertEqual(errors, expected)
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