diff options
Diffstat (limited to 'tests/regressiontests/many_to_one_regress/models.py')
| -rw-r--r-- | tests/regressiontests/many_to_one_regress/models.py | 52 |
1 files changed, 45 insertions, 7 deletions
diff --git a/tests/regressiontests/many_to_one_regress/models.py b/tests/regressiontests/many_to_one_regress/models.py index 429bdd7558..b87b36cb3b 100644 --- a/tests/regressiontests/many_to_one_regress/models.py +++ b/tests/regressiontests/many_to_one_regress/models.py @@ -55,31 +55,46 @@ __test__ = {'API_TESTS':""" <Child: Child object> # -# Tests of ForeignKey assignment and the related-object cache (see #6886) +# Tests of ForeignKey assignment and the related-object cache (see #6886). # >>> p = Parent.objects.create(name="Parent") >>> c = Child.objects.create(name="Child", parent=p) -# Look up the object again so that we get a "fresh" object +# Look up the object again so that we get a "fresh" object. >>> c = Child.objects.get(name="Child") >>> p = c.parent -# Accessing the related object again returns the exactly same object +# Accessing the related object again returns the exactly same object. >>> c.parent is p True -# But if we kill the cache, we get a new object +# But if we kill the cache, we get a new object. >>> del c._parent_cache >>> c.parent is p False -# Assigning a new object results in that object getting cached immediately +# Assigning a new object results in that object getting cached immediately. >>> p2 = Parent.objects.create(name="Parent 2") >>> c.parent = p2 >>> c.parent is p2 True -# Assigning None fails: Child.parent is null=False +# Assigning None succeeds if field is null=True. +>>> p.bestchild = None +>>> p.bestchild is None +True + +# bestchild should still be None after saving. +>>> p.save() +>>> p.bestchild is None +True + +# bestchild should still be None after fetching the object again. +>>> p = Parent.objects.get(name="Parent") +>>> p.bestchild is None +True + +# Assigning None fails: Child.parent is null=False. >>> c.parent = None Traceback (most recent call last): ... @@ -91,8 +106,31 @@ Traceback (most recent call last): ... ValueError: Cannot assign "<First: First object>": "Child.parent" must be a "Parent" instance. -# Test of multiple ForeignKeys to the same model (bug #7125) +# Creation using keyword argument should cache the related object. +>>> p = Parent.objects.get(name="Parent") +>>> c = Child(parent=p) +>>> c.parent is p +True + +# Creation using keyword argument and unsaved related instance (#8070). +>>> p = Parent() +>>> c = Child(parent=p) +>>> c.parent is p +True +# Creation using attname keyword argument and an id will cause the related +# object to be fetched. +>>> p = Parent.objects.get(name="Parent") +>>> c = Child(parent_id=p.id) +>>> c.parent is p +False +>>> c.parent == p +True + + +# +# Test of multiple ForeignKeys to the same model (bug #7125). +# >>> c1 = Category.objects.create(name='First') >>> c2 = Category.objects.create(name='Second') >>> c3 = Category.objects.create(name='Third') |