Fixed #14459 -- converted many_to_one_regress tests from doctests to unittests. We have always been at war with doctests. Patch from Gabriel Hurley.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@14210 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Alex Gaynor
parent
5bf73dd909
commit
1ac4c101ae
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@ -44,133 +44,3 @@ class Relation(models.Model):
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def __unicode__(self):
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def __unicode__(self):
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return u"%s - %s" % (self.left.category.name, self.right.category.name)
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return u"%s - %s" % (self.left.category.name, self.right.category.name)
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__test__ = {'API_TESTS':"""
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>>> Third.objects.create(id='3', name='An example')
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<Third: Third object>
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>>> parent = Parent(name = 'fred')
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>>> parent.save()
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>>> Child.objects.create(name='bam-bam', parent=parent)
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<Child: Child object>
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#
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# Tests of ForeignKey assignment and the related-object cache (see #6886).
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#
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>>> p = Parent.objects.create(name="Parent")
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>>> c = Child.objects.create(name="Child", parent=p)
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# Look up the object again so that we get a "fresh" object.
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>>> c = Child.objects.get(name="Child")
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>>> p = c.parent
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# Accessing the related object again returns the exactly same object.
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>>> c.parent is p
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True
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# But if we kill the cache, we get a new object.
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>>> del c._parent_cache
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>>> c.parent is p
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False
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# Assigning a new object results in that object getting cached immediately.
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>>> p2 = Parent.objects.create(name="Parent 2")
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>>> c.parent = p2
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>>> c.parent is p2
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True
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# Assigning None succeeds if field is null=True.
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>>> p.bestchild = None
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>>> p.bestchild is None
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True
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# bestchild should still be None after saving.
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>>> p.save()
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>>> p.bestchild is None
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True
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# bestchild should still be None after fetching the object again.
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>>> p = Parent.objects.get(name="Parent")
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>>> p.bestchild is None
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True
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# Assigning None fails: Child.parent is null=False.
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>>> c.parent = None
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Traceback (most recent call last):
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...
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ValueError: Cannot assign None: "Child.parent" does not allow null values.
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# You also can't assign an object of the wrong type here
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>>> c.parent = First(id=1, second=1)
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Traceback (most recent call last):
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...
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ValueError: Cannot assign "<First: First object>": "Child.parent" must be a "Parent" instance.
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# Nor can you explicitly assign None to Child.parent during object creation
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# (regression for #9649).
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>>> Child(name='xyzzy', parent=None)
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Traceback (most recent call last):
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...
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ValueError: Cannot assign None: "Child.parent" does not allow null values.
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>>> Child.objects.create(name='xyzzy', parent=None)
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Traceback (most recent call last):
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...
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ValueError: Cannot assign None: "Child.parent" does not allow null values.
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# Creation using keyword argument should cache the related object.
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>>> p = Parent.objects.get(name="Parent")
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>>> c = Child(parent=p)
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>>> c.parent is p
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True
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# Creation using keyword argument and unsaved related instance (#8070).
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>>> p = Parent()
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>>> c = Child(parent=p)
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>>> c.parent is p
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True
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# Creation using attname keyword argument and an id will cause the related
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# object to be fetched.
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>>> p = Parent.objects.get(name="Parent")
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>>> c = Child(parent_id=p.id)
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>>> c.parent is p
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False
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>>> c.parent == p
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True
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#
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# Test of multiple ForeignKeys to the same model (bug #7125).
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#
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>>> c1 = Category.objects.create(name='First')
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>>> c2 = Category.objects.create(name='Second')
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>>> c3 = Category.objects.create(name='Third')
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>>> r1 = Record.objects.create(category=c1)
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>>> r2 = Record.objects.create(category=c1)
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>>> r3 = Record.objects.create(category=c2)
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>>> r4 = Record.objects.create(category=c2)
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>>> r5 = Record.objects.create(category=c3)
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>>> r = Relation.objects.create(left=r1, right=r2)
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>>> r = Relation.objects.create(left=r3, right=r4)
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>>> r = Relation.objects.create(left=r1, right=r3)
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>>> r = Relation.objects.create(left=r5, right=r2)
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>>> r = Relation.objects.create(left=r3, right=r2)
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>>> Relation.objects.filter(left__category__name__in=['First'], right__category__name__in=['Second'])
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[<Relation: First - Second>]
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>>> Category.objects.filter(record__left_set__right__category__name='Second').order_by('name')
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[<Category: First>, <Category: Second>]
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>>> c2 = Child.objects.create(name="Grandchild", parent=c)
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Traceback (most recent call last):
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...
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ValueError: Cannot assign "<Child: Child object>": "Child.parent" must be a "Parent" instance.
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# Regression for #12190 -- Should be able to instantiate a FK
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# outside of a model, and interrogate its related field.
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>>> cat = models.ForeignKey(Category)
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>>> cat.rel.get_related_field().name
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'id'
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"""}
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@ -0,0 +1,105 @@
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from django.db import models
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from django.test import TestCase
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from models import First, Second, Third, Parent, Child, Category, Record, Relation
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class ManyToOneRegressionTests(TestCase):
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def test_object_creation(self):
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Third.objects.create(id='3', name='An example')
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parent = Parent(name='fred')
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parent.save()
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Child.objects.create(name='bam-bam', parent=parent)
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def test_fk_assignment_and_related_object_cache(self):
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# Tests of ForeignKey assignment and the related-object cache (see #6886).
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p = Parent.objects.create(name="Parent")
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c = Child.objects.create(name="Child", parent=p)
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# Look up the object again so that we get a "fresh" object.
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c = Child.objects.get(name="Child")
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p = c.parent
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# Accessing the related object again returns the exactly same object.
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self.assertTrue(c.parent is p)
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# But if we kill the cache, we get a new object.
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del c._parent_cache
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self.assertFalse(c.parent is p)
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# Assigning a new object results in that object getting cached immediately.
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p2 = Parent.objects.create(name="Parent 2")
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c.parent = p2
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self.assertTrue(c.parent is p2)
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# Assigning None succeeds if field is null=True.
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p.bestchild = None
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self.assertTrue(p.bestchild is None)
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# bestchild should still be None after saving.
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p.save()
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self.assertTrue(p.bestchild is None)
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# bestchild should still be None after fetching the object again.
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p = Parent.objects.get(name="Parent")
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self.assertTrue(p.bestchild is None)
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# Assigning None fails: Child.parent is null=False.
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self.assertRaises(ValueError, setattr, c, "parent", None)
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# You also can't assign an object of the wrong type here
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self.assertRaises(ValueError, setattr, c, "parent", First(id=1, second=1))
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# Nor can you explicitly assign None to Child.parent during object
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# creation (regression for #9649).
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self.assertRaises(ValueError, Child, name='xyzzy', parent=None)
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self.assertRaises(ValueError, Child.objects.create, name='xyzzy', parent=None)
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# Creation using keyword argument should cache the related object.
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p = Parent.objects.get(name="Parent")
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c = Child(parent=p)
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self.assertTrue(c.parent is p)
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# Creation using keyword argument and unsaved related instance (#8070).
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p = Parent()
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c = Child(parent=p)
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self.assertTrue(c.parent is p)
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# Creation using attname keyword argument and an id will cause the
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# related object to be fetched.
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p = Parent.objects.get(name="Parent")
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c = Child(parent_id=p.id)
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self.assertFalse(c.parent is p)
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self.assertEqual(c.parent, p)
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def test_multiple_foreignkeys(self):
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# Test of multiple ForeignKeys to the same model (bug #7125).
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c1 = Category.objects.create(name='First')
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c2 = Category.objects.create(name='Second')
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c3 = Category.objects.create(name='Third')
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r1 = Record.objects.create(category=c1)
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r2 = Record.objects.create(category=c1)
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r3 = Record.objects.create(category=c2)
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r4 = Record.objects.create(category=c2)
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r5 = Record.objects.create(category=c3)
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r = Relation.objects.create(left=r1, right=r2)
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r = Relation.objects.create(left=r3, right=r4)
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r = Relation.objects.create(left=r1, right=r3)
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r = Relation.objects.create(left=r5, right=r2)
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r = Relation.objects.create(left=r3, right=r2)
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q1 = Relation.objects.filter(left__category__name__in=['First'], right__category__name__in=['Second'])
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self.assertQuerysetEqual(q1, ["<Relation: First - Second>"])
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q2 = Category.objects.filter(record__left_set__right__category__name='Second').order_by('name')
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self.assertQuerysetEqual(q2, ["<Category: First>", "<Category: Second>"])
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p = Parent.objects.create(name="Parent")
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c = Child.objects.create(name="Child", parent=p)
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self.assertRaises(ValueError, Child.objects.create, name="Grandchild", parent=c)
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def test_fk_instantiation_outside_model(self):
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# Regression for #12190 -- Should be able to instantiate a FK outside
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# of a model, and interrogate its related field.
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cat = models.ForeignKey(Category)
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self.assertEqual('id', cat.rel.get_related_field().name)
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