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|
# -*- encoding: utf-8 -*-
from __future__ import unicode_literals
from django.core.checks import Error
from django.db import models
from django.test.utils import override_settings
from .base import IsolatedModelsTestCase
class IndexTogetherTests(IsolatedModelsTestCase):
def test_non_iterable(self):
class Model(models.Model):
class Meta:
index_together = 42
errors = Model.check()
expected = [
Error(
'"index_together" must be a list or tuple.',
hint=None,
obj=Model,
id='E006',
),
]
self.assertEqual(errors, expected)
def test_non_list(self):
class Model(models.Model):
class Meta:
index_together = 'not-a-list'
errors = Model.check()
expected = [
Error(
'"index_together" must be a list or tuple.',
hint=None,
obj=Model,
id='E006',
),
]
self.assertEqual(errors, expected)
def test_list_containing_non_iterable(self):
class Model(models.Model):
class Meta:
index_together = [
'non-iterable',
'second-non-iterable',
]
errors = Model.check()
expected = [
Error(
'All "index_together" elements must be lists or tuples.',
hint=None,
obj=Model,
id='E007',
),
]
self.assertEqual(errors, expected)
def test_pointing_to_missing_field(self):
class Model(models.Model):
class Meta:
index_together = [
["missing_field"],
]
errors = Model.check()
expected = [
Error(
'"index_together" points to a missing field named "missing_field".',
hint='Ensure that you did not misspell the field name.',
obj=Model,
id='E010',
),
]
self.assertEqual(errors, expected)
def test_pointing_to_m2m_field(self):
class Model(models.Model):
m2m = models.ManyToManyField('self')
class Meta:
index_together = [
["m2m"],
]
errors = Model.check()
expected = [
Error(
('"index_together" refers to a m2m "m2m" field, but '
'ManyToManyFields are not supported in "index_together".'),
hint=None,
obj=Model,
id='E011',
),
]
self.assertEqual(errors, expected)
# unique_together tests are very similar to index_together tests.
class UniqueTogetherTests(IsolatedModelsTestCase):
def test_non_iterable(self):
class Model(models.Model):
class Meta:
unique_together = 42
errors = Model.check()
expected = [
Error(
'"unique_together" must be a list or tuple.',
hint=None,
obj=Model,
id='E008',
),
]
self.assertEqual(errors, expected)
def test_list_containing_non_iterable(self):
class Model(models.Model):
one = models.IntegerField()
two = models.IntegerField()
class Meta:
unique_together = [('a', 'b'), 42]
errors = Model.check()
expected = [
Error(
'All "unique_together" elements must be lists or tuples.',
hint=None,
obj=Model,
id='E009',
),
]
self.assertEqual(errors, expected)
def test_valid_model(self):
class Model(models.Model):
one = models.IntegerField()
two = models.IntegerField()
class Meta:
# unique_together can be a simple tuple
unique_together = ('one', 'two')
errors = Model.check()
self.assertEqual(errors, [])
def test_pointing_to_missing_field(self):
class Model(models.Model):
class Meta:
unique_together = [
["missing_field"],
]
errors = Model.check()
expected = [
Error(
'"unique_together" points to a missing field named "missing_field".',
hint='Ensure that you did not misspell the field name.',
obj=Model,
id='E010',
),
]
self.assertEqual(errors, expected)
def test_pointing_to_m2m(self):
class Model(models.Model):
m2m = models.ManyToManyField('self')
class Meta:
unique_together = [
["m2m"],
]
errors = Model.check()
expected = [
Error(
('"unique_together" refers to a m2m "m2m" field, but '
'ManyToManyFields are not supported in "unique_together".'),
hint=None,
obj=Model,
id='E011',
),
]
self.assertEqual(errors, expected)
class OtherModelTests(IsolatedModelsTestCase):
def test_unique_primary_key(self):
class Model(models.Model):
id = models.IntegerField(primary_key=False)
errors = Model.check()
expected = [
Error(
('You cannot use "id" as a field name, because each model '
'automatically gets an "id" field if none of the fields '
'have primary_key=True.'),
hint='Remove or rename "id" field or add primary_key=True to a field.',
obj=Model,
id='E005',
),
Error(
'Field "id" has column name "id" that is already used.',
hint=None,
obj=Model,
)
]
self.assertEqual(errors, expected)
def test_field_names_ending_with_underscore(self):
class Model(models.Model):
field_ = models.CharField(max_length=10)
m2m_ = models.ManyToManyField('self')
errors = Model.check()
expected = [
Error(
'Field names must not end with underscores.',
hint=None,
obj=Model._meta.get_field('field_'),
id='E001',
),
Error(
'Field names must not end with underscores.',
hint=None,
obj=Model._meta.get_field('m2m_'),
id='E001',
),
]
self.assertEqual(errors, expected)
def test_ordering_non_iterable(self):
class Model(models.Model):
class Meta:
ordering = "missing_field"
errors = Model.check()
expected = [
Error(
('"ordering" must be a tuple or list '
'(even if you want to order by only one field).'),
hint=None,
obj=Model,
id='E012',
),
]
self.assertEqual(errors, expected)
def test_ordering_pointing_to_missing_field(self):
class Model(models.Model):
class Meta:
ordering = ("missing_field",)
errors = Model.check()
expected = [
Error(
'"ordering" pointing to a missing "missing_field" field.',
hint='Ensure that you did not misspell the field name.',
obj=Model,
id='E013',
)
]
self.assertEqual(errors, expected)
@override_settings(TEST_SWAPPED_MODEL_BAD_VALUE='not-a-model')
def test_swappable_missing_app_name(self):
class Model(models.Model):
class Meta:
swappable = 'TEST_SWAPPED_MODEL_BAD_VALUE'
errors = Model.check()
expected = [
Error(
'"TEST_SWAPPED_MODEL_BAD_VALUE" is not of the form "app_label.app_name".',
hint=None,
obj=Model,
id='E002',
),
]
self.assertEqual(errors, expected)
@override_settings(TEST_SWAPPED_MODEL_BAD_MODEL='not_an_app.Target')
def test_swappable_missing_app(self):
class Model(models.Model):
class Meta:
swappable = 'TEST_SWAPPED_MODEL_BAD_MODEL'
errors = Model.check()
expected = [
Error(
('The model has been swapped out for not_an_app.Target '
'which has not been installed or is abstract.'),
hint=('Ensure that you did not misspell the model name and '
'the app name as well as the model is not abstract. Does '
'your INSTALLED_APPS setting contain the "not_an_app" app?'),
obj=Model,
id='E003',
),
]
self.assertEqual(errors, expected)
def test_two_m2m_through_same_relationship(self):
class Person(models.Model):
pass
class Group(models.Model):
primary = models.ManyToManyField(Person,
through="Membership", related_name="primary")
secondary = models.ManyToManyField(Person, through="Membership",
related_name="secondary")
class Membership(models.Model):
person = models.ForeignKey(Person)
group = models.ForeignKey(Group)
errors = Group.check()
expected = [
Error(
('The model has two many-to-many relations through '
'the intermediary Membership model, which is not permitted.'),
hint=None,
obj=Group,
id='E004',
)
]
self.assertEqual(errors, expected)
|
