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Code Issues 25 Releases Wiki Activity

Fixed #31437 -- Corrected tests to show abstract multiple inheritance system check error.

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Added minimal multiple inheritance test case showing error.
Removed obsolete diamond-inheritance case, originally added in
85ef98dc6e.
This commit is contained in:
Carlton Gibson 2020-04-08 14:38:35 +02:00 committed by Mariusz Felisiak
parent 537b0c5edf
commit 4bbe8261c4
1 changed files with 14 additions and 17 deletions
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31
tests/model_inheritance/test_abstract_inheritance.py
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@ -34,33 +34,30 @@ class AbstractInheritanceTests(SimpleTestCase):
self.assertEqual(DerivedChild._meta.get_field('name').max_length, 50)
self.assertEqual(DerivedGrandChild._meta.get_field('name').max_length, 50)
def test_multiple_parents_mro(self):
class AbstractBaseOne(models.Model):
class Meta:
abstract = True
class AbstractBaseTwo(models.Model):
name = models.CharField(max_length=30)
def test_multiple_inheritance_cannot_shadow_inherited_field(self):
class ParentA(models.Model):
name = models.CharField(max_length=255)
class Meta:
abstract = True
class DescendantOne(AbstractBaseOne, AbstractBaseTwo):
class Meta:
abstract = True
class DescendantTwo(AbstractBaseOne, AbstractBaseTwo):
name = models.CharField(max_length=50)
class ParentB(models.Model):
name = models.IntegerField()
class Meta:
abstract = True
class Derived(DescendantOne, DescendantTwo):
class Child(ParentA, ParentB):
pass
self.assertEqual(DescendantOne._meta.get_field('name').max_length, 30)
self.assertEqual(DescendantTwo._meta.get_field('name').max_length, 50)
self.assertEqual(Derived._meta.get_field('name').max_length, 50)
self.assertEqual(Child.check(), [
Error(
"The field 'name' clashes with the field 'name' from model "
"'model_inheritance.child'.",
obj=Child._meta.get_field('name'),
id='models.E006',
),
])
def test_multiple_inheritance_cannot_shadow_concrete_inherited_field(self):
class ConcreteParent(models.Model):