Converted defer_regress tests from doctests to unittests. We have always been at war with doctests.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14094 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Alex Gaynor 2010-10-09 21:55:15 +00:00
parent 1fe1af93a5
commit 16089ba135
2 changed files with 156 additions and 113 deletions

View File

@ -34,115 +34,3 @@ class Leaf(models.Model):
class ResolveThis(models.Model): class ResolveThis(models.Model):
num = models.FloatField() num = models.FloatField()
name = models.CharField(max_length=16) name = models.CharField(max_length=16)
__test__ = {"regression_tests": """
Deferred fields should really be deferred and not accidentally use the field's
default value just because they aren't passed to __init__.
>>> settings.DEBUG = True
>>> _ = Item.objects.create(name="first", value=42)
>>> obj = Item.objects.only("name", "other_value").get(name="first")
# Accessing "name" doesn't trigger a new database query. Accessing "value" or
# "text" should.
>>> num = len(connection.queries)
>>> obj.name
u"first"
>>> obj.other_value
0
>>> len(connection.queries) == num
True
>>> obj.value
42
>>> len(connection.queries) == num + 1 # Effect of values lookup.
True
>>> obj.text
u"xyzzy"
>>> len(connection.queries) == num + 2 # Effect of text lookup.
True
>>> obj.text
u"xyzzy"
>>> len(connection.queries) == num + 2
True
>>> settings.DEBUG = False
Regression test for #10695. Make sure different instances don't inadvertently
share data in the deferred descriptor objects.
>>> i = Item.objects.create(name="no I'm first", value=37)
>>> items = Item.objects.only('value').order_by('-value')
>>> items[0].name
u'first'
>>> items[1].name
u"no I'm first"
>>> _ = RelatedItem.objects.create(item=i)
>>> r = RelatedItem.objects.defer('item').get()
>>> r.item_id == i.id
True
>>> r.item == i
True
Some further checks for select_related() and inherited model behaviour
(regression for #10710).
>>> c1 = Child.objects.create(name="c1", value=42)
>>> c2 = Child.objects.create(name="c2", value=37)
>>> obj = Leaf.objects.create(name="l1", child=c1, second_child=c2)
>>> obj = Leaf.objects.only("name", "child").select_related()[0]
>>> obj.child.name
u'c1'
>>> Leaf.objects.select_related().only("child__name", "second_child__name")
[<Leaf_Deferred_name_value: l1>]
Models instances with deferred fields should still return the same content
types as their non-deferred versions (bug #10738).
>>> ctype = ContentType.objects.get_for_model
>>> c1 = ctype(Item.objects.all()[0])
>>> c2 = ctype(Item.objects.defer("name")[0])
>>> c3 = ctype(Item.objects.only("name")[0])
>>> c1 is c2 is c3
True
# Regression for #10733 - only() can be used on a model with two foreign keys.
>>> results = Leaf.objects.all().only('name', 'child', 'second_child').select_related()
>>> results[0].child.name
u'c1'
>>> results[0].second_child.name
u'c2'
>>> results = Leaf.objects.all().only('name', 'child', 'second_child', 'child__name', 'second_child__name').select_related()
>>> results[0].child.name
u'c1'
>>> results[0].second_child.name
u'c2'
# Test for #12163 - Pickling error saving session with unsaved model instances.
>>> from django.contrib.sessions.backends.db import SessionStore
>>> SESSION_KEY = '2b1189a188b44ad18c35e1baac6ceead'
>>> item = Item()
>>> item._deferred
False
>>> s = SessionStore(SESSION_KEY)
>>> s.clear()
>>> s['item'] = item
>>> s.save()
>>> s = SessionStore(SESSION_KEY)
>>> s.modified = True
>>> s.save()
>>> i2 = s['item']
>>> i2._deferred # Item must still be non-deferred
False
# Regression for #11936 - loading.get_models should not return deferred models by default.
>>> from django.db.models.loading import get_models
>>> sorted(get_models(models.get_app('defer_regress')), key=lambda obj: obj._meta.object_name)
[<class 'regressiontests.defer_regress.models.Child'>, <class 'regressiontests.defer_regress.models.Item'>, <class 'regressiontests.defer_regress.models.Leaf'>, <class 'regressiontests.defer_regress.models.RelatedItem'>, <class 'regressiontests.defer_regress.models.ResolveThis'>]
>>> sorted(get_models(models.get_app('defer_regress'), include_deferred=True), key=lambda obj: obj._meta.object_name)
[<class 'regressiontests.defer_regress.models.Child'>, <class 'regressiontests.defer_regress.models.Child_Deferred_value'>, <class 'regressiontests.defer_regress.models.Item'>, <class 'regressiontests.defer_regress.models.Item_Deferred_name'>, <class 'regressiontests.defer_regress.models.Item_Deferred_name_other_value_text'>, <class 'regressiontests.defer_regress.models.Item_Deferred_name_other_value_value'>, <class 'regressiontests.defer_regress.models.Item_Deferred_other_value_text_value'>, <class 'regressiontests.defer_regress.models.Item_Deferred_text_value'>, <class 'regressiontests.defer_regress.models.Leaf'>, <class 'regressiontests.defer_regress.models.Leaf_Deferred_child_id_second_child_id_value'>, <class 'regressiontests.defer_regress.models.Leaf_Deferred_name_value'>, <class 'regressiontests.defer_regress.models.Leaf_Deferred_second_child_value'>, <class 'regressiontests.defer_regress.models.Leaf_Deferred_value'>, <class 'regressiontests.defer_regress.models.RelatedItem'>, <class 'regressiontests.defer_regress.models.RelatedItem_Deferred_'>, <class 'regressiontests.defer_regress.models.RelatedItem_Deferred_item_id'>, <class 'regressiontests.defer_regress.models.ResolveThis'>, <class 'regressiontests.defer_regress.models.ResolveThis_Deferred_num'>]
"""
}

View File

@ -1,7 +1,162 @@
from operator import attrgetter
from django.conf import settings
from django.contrib.contenttypes.models import ContentType
from django.contrib.sessions.backends.db import SessionStore
from django.db import connection
from django.db.models.loading import cache
from django.test import TestCase from django.test import TestCase
from models import ResolveThis
from models import ResolveThis, Item, RelatedItem, Child, Leaf
class DeferRegressionTest(TestCase): class DeferRegressionTest(TestCase):
def assert_num_queries(self, n, func, *args, **kwargs):
old_DEBUG = settings.DEBUG
settings.DEBUG = True
starting_queries = len(connection.queries)
try:
func(*args, **kwargs)
finally:
settings.DEBUG = old_DEBUG
self.assertEqual(starting_queries + n, len(connection.queries))
def test_basic(self):
# Deferred fields should really be deferred and not accidentally use
# the field's default value just because they aren't passed to __init__
Item.objects.create(name="first", value=42)
obj = Item.objects.only("name", "other_value").get(name="first")
# Accessing "name" doesn't trigger a new database query. Accessing
# "value" or "text" should.
def test():
self.assertEqual(obj.name, "first")
self.assertEqual(obj.other_value, 0)
self.assert_num_queries(0, test)
def test():
self.assertEqual(obj.value, 42)
self.assert_num_queries(1, test)
def test():
self.assertEqual(obj.text, "xyzzy")
self.assert_num_queries(1, test)
def test():
self.assertEqual(obj.text, "xyzzy")
self.assert_num_queries(0, test)
# Regression test for #10695. Make sure different instances don't
# inadvertently share data in the deferred descriptor objects.
i = Item.objects.create(name="no I'm first", value=37)
items = Item.objects.only("value").order_by("-value")
self.assertEqual(items[0].name, "first")
self.assertEqual(items[1].name, "no I'm first")
RelatedItem.objects.create(item=i)
r = RelatedItem.objects.defer("item").get()
self.assertEqual(r.item_id, i.id)
self.assertEqual(r.item, i)
# Some further checks for select_related() and inherited model
# behaviour (regression for #10710).
c1 = Child.objects.create(name="c1", value=42)
c2 = Child.objects.create(name="c2", value=37)
Leaf.objects.create(name="l1", child=c1, second_child=c2)
obj = Leaf.objects.only("name", "child").select_related()[0]
self.assertEqual(obj.child.name, "c1")
self.assertQuerysetEqual(
Leaf.objects.select_related().only("child__name", "second_child__name"), [
"l1",
],
attrgetter("name")
)
# Models instances with deferred fields should still return the same
# content types as their non-deferred versions (bug #10738).
ctype = ContentType.objects.get_for_model
c1 = ctype(Item.objects.all()[0])
c2 = ctype(Item.objects.defer("name")[0])
c3 = ctype(Item.objects.only("name")[0])
self.assertTrue(c1 is c2 is c3)
# Regression for #10733 - only() can be used on a model with two
# foreign keys.
results = Leaf.objects.only("name", "child", "second_child").select_related()
self.assertEqual(results[0].child.name, "c1")
self.assertEqual(results[0].second_child.name, "c2")
results = Leaf.objects.only("name", "child", "second_child", "child__name", "second_child__name").select_related()
self.assertEqual(results[0].child.name, "c1")
self.assertEqual(results[0].second_child.name, "c2")
# Test for #12163 - Pickling error saving session with unsaved model
# instances.
SESSION_KEY = '2b1189a188b44ad18c35e1baac6ceead'
item = Item()
item._deferred = False
s = SessionStore(SESSION_KEY)
s.clear()
s["item"] = item
s.save()
s = SessionStore(SESSION_KEY)
s.modified = True
s.save()
i2 = s["item"]
self.assertFalse(i2._deferred)
# Regression for #11936 - loading.get_models should not return deferred
# models by default.
klasses = sorted(
cache.get_models(cache.get_app("defer_regress")),
key=lambda klass: klass.__name__
)
self.assertEqual(
klasses, [
Child,
Item,
Leaf,
RelatedItem,
ResolveThis,
]
)
klasses = sorted(
map(
attrgetter("__name__"),
cache.get_models(
cache.get_app("defer_regress"), include_deferred=True
),
)
)
self.assertEqual(
klasses, [
"Child",
"Child_Deferred_value",
"Item",
"Item_Deferred_name",
"Item_Deferred_name_other_value_text",
"Item_Deferred_name_other_value_value",
"Item_Deferred_other_value_text_value",
"Item_Deferred_text_value",
"Leaf",
"Leaf_Deferred_child_id_second_child_id_value",
"Leaf_Deferred_name_value",
"Leaf_Deferred_second_child_value",
"Leaf_Deferred_value",
"RelatedItem",
"RelatedItem_Deferred_",
"RelatedItem_Deferred_item_id",
"ResolveThis",
]
)
def test_resolve_columns(self): def test_resolve_columns(self):
rt = ResolveThis.objects.create(num=5.0, name='Foobar') rt = ResolveThis.objects.create(num=5.0, name='Foobar')
qs = ResolveThis.objects.defer('num') qs = ResolveThis.objects.defer('num')