1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
|
from __future__ import unicode_literals
from django.contrib.contenttypes.models import ContentType
from django.contrib.contenttypes.views import shortcut
from django.contrib.sites.shortcuts import get_current_site
from django.db.utils import IntegrityError, OperationalError, ProgrammingError
from django.http import Http404, HttpRequest
from django.test import TestCase, mock, override_settings
from django.utils import six
from .models import (
ConcreteModel, FooWithBrokenAbsoluteUrl, FooWithoutUrl, FooWithUrl,
ProxyModel,
)
class ContentTypesTests(TestCase):
def setUp(self):
ContentType.objects.clear_cache()
def tearDown(self):
ContentType.objects.clear_cache()
def test_lookup_cache(self):
"""
Make sure that the content type cache (see ContentTypeManager)
works correctly. Lookups for a particular content type -- by model, ID
or natural key -- should hit the database only on the first lookup.
"""
# At this point, a lookup for a ContentType should hit the DB
with self.assertNumQueries(1):
ContentType.objects.get_for_model(ContentType)
# A second hit, though, won't hit the DB, nor will a lookup by ID
# or natural key
with self.assertNumQueries(0):
ct = ContentType.objects.get_for_model(ContentType)
with self.assertNumQueries(0):
ContentType.objects.get_for_id(ct.id)
with self.assertNumQueries(0):
ContentType.objects.get_by_natural_key('contenttypes',
'contenttype')
# Once we clear the cache, another lookup will again hit the DB
ContentType.objects.clear_cache()
with self.assertNumQueries(1):
ContentType.objects.get_for_model(ContentType)
# The same should happen with a lookup by natural key
ContentType.objects.clear_cache()
with self.assertNumQueries(1):
ContentType.objects.get_by_natural_key('contenttypes',
'contenttype')
# And a second hit shouldn't hit the DB
with self.assertNumQueries(0):
ContentType.objects.get_by_natural_key('contenttypes',
'contenttype')
def test_get_for_models_empty_cache(self):
# Empty cache.
with self.assertNumQueries(1):
cts = ContentType.objects.get_for_models(ContentType, FooWithUrl)
self.assertEqual(cts, {
ContentType: ContentType.objects.get_for_model(ContentType),
FooWithUrl: ContentType.objects.get_for_model(FooWithUrl),
})
def test_get_for_models_partial_cache(self):
# Partial cache
ContentType.objects.get_for_model(ContentType)
with self.assertNumQueries(1):
cts = ContentType.objects.get_for_models(ContentType, FooWithUrl)
self.assertEqual(cts, {
ContentType: ContentType.objects.get_for_model(ContentType),
FooWithUrl: ContentType.objects.get_for_model(FooWithUrl),
})
def test_get_for_models_full_cache(self):
# Full cache
ContentType.objects.get_for_model(ContentType)
ContentType.objects.get_for_model(FooWithUrl)
with self.assertNumQueries(0):
cts = ContentType.objects.get_for_models(ContentType, FooWithUrl)
self.assertEqual(cts, {
ContentType: ContentType.objects.get_for_model(ContentType),
FooWithUrl: ContentType.objects.get_for_model(FooWithUrl),
})
def test_get_for_concrete_model(self):
"""
Make sure the `for_concrete_model` kwarg correctly works
with concrete, proxy and deferred models
"""
concrete_model_ct = ContentType.objects.get_for_model(ConcreteModel)
self.assertEqual(concrete_model_ct,
ContentType.objects.get_for_model(ProxyModel))
self.assertEqual(concrete_model_ct,
ContentType.objects.get_for_model(ConcreteModel,
for_concrete_model=False))
proxy_model_ct = ContentType.objects.get_for_model(ProxyModel,
for_concrete_model=False)
self.assertNotEqual(concrete_model_ct, proxy_model_ct)
# Make sure deferred model are correctly handled
ConcreteModel.objects.create(name="Concrete")
DeferredConcreteModel = ConcreteModel.objects.only('pk').get().__class__
DeferredProxyModel = ProxyModel.objects.only('pk').get().__class__
self.assertEqual(concrete_model_ct,
ContentType.objects.get_for_model(DeferredConcreteModel))
self.assertEqual(concrete_model_ct,
ContentType.objects.get_for_model(DeferredConcreteModel,
for_concrete_model=False))
self.assertEqual(concrete_model_ct,
ContentType.objects.get_for_model(DeferredProxyModel))
self.assertEqual(proxy_model_ct,
ContentType.objects.get_for_model(DeferredProxyModel,
for_concrete_model=False))
def test_get_for_concrete_models(self):
"""
Make sure the `for_concrete_models` kwarg correctly works
with concrete, proxy and deferred models.
"""
concrete_model_ct = ContentType.objects.get_for_model(ConcreteModel)
cts = ContentType.objects.get_for_models(ConcreteModel, ProxyModel)
self.assertEqual(cts, {
ConcreteModel: concrete_model_ct,
ProxyModel: concrete_model_ct,
})
proxy_model_ct = ContentType.objects.get_for_model(ProxyModel,
for_concrete_model=False)
cts = ContentType.objects.get_for_models(ConcreteModel, ProxyModel,
for_concrete_models=False)
self.assertEqual(cts, {
ConcreteModel: concrete_model_ct,
ProxyModel: proxy_model_ct,
})
# Make sure deferred model are correctly handled
ConcreteModel.objects.create(name="Concrete")
DeferredConcreteModel = ConcreteModel.objects.only('pk').get().__class__
DeferredProxyModel = ProxyModel.objects.only('pk').get().__class__
cts = ContentType.objects.get_for_models(DeferredConcreteModel,
DeferredProxyModel)
self.assertEqual(cts, {
DeferredConcreteModel: concrete_model_ct,
DeferredProxyModel: concrete_model_ct,
})
cts = ContentType.objects.get_for_models(DeferredConcreteModel,
DeferredProxyModel,
for_concrete_models=False)
self.assertEqual(cts, {
DeferredConcreteModel: concrete_model_ct,
DeferredProxyModel: proxy_model_ct,
})
@override_settings(ALLOWED_HOSTS=['example.com'])
def test_shortcut_view(self):
"""
Check that the shortcut view (used for the admin "view on site"
functionality) returns a complete URL regardless of whether the sites
framework is installed
"""
request = HttpRequest()
request.META = {
"SERVER_NAME": "Example.com",
"SERVER_PORT": "80",
}
user_ct = ContentType.objects.get_for_model(FooWithUrl)
obj = FooWithUrl.objects.create(name="john")
with self.modify_settings(INSTALLED_APPS={'append': 'django.contrib.sites'}):
response = shortcut(request, user_ct.id, obj.id)
self.assertEqual("http://%s/users/john/" % get_current_site(request).domain,
response._headers.get("location")[1])
with self.modify_settings(INSTALLED_APPS={'remove': 'django.contrib.sites'}):
response = shortcut(request, user_ct.id, obj.id)
self.assertEqual("http://Example.com/users/john/",
response._headers.get("location")[1])
def test_shortcut_view_without_get_absolute_url(self):
"""
Check that the shortcut view (used for the admin "view on site"
functionality) returns 404 when get_absolute_url is not defined.
"""
request = HttpRequest()
request.META = {
"SERVER_NAME": "Example.com",
"SERVER_PORT": "80",
}
user_ct = ContentType.objects.get_for_model(FooWithoutUrl)
obj = FooWithoutUrl.objects.create(name="john")
self.assertRaises(Http404, shortcut, request, user_ct.id, obj.id)
def test_shortcut_view_with_broken_get_absolute_url(self):
"""
Check that the shortcut view does not catch an AttributeError raised
by the model's get_absolute_url method.
Refs #8997.
"""
request = HttpRequest()
request.META = {
"SERVER_NAME": "Example.com",
"SERVER_PORT": "80",
}
user_ct = ContentType.objects.get_for_model(FooWithBrokenAbsoluteUrl)
obj = FooWithBrokenAbsoluteUrl.objects.create(name="john")
self.assertRaises(AttributeError, shortcut, request, user_ct.id, obj.id)
def test_missing_model(self):
"""
Ensures that displaying content types in admin (or anywhere) doesn't
break on leftover content type records in the DB for which no model
is defined anymore.
"""
ct = ContentType.objects.create(
app_label='contenttypes',
model='OldModel',
)
self.assertEqual(six.text_type(ct), 'OldModel')
self.assertIsNone(ct.model_class())
# Make sure stale ContentTypes can be fetched like any other object.
# Before Django 1.6 this caused a NoneType error in the caching mechanism.
# Instead, just return the ContentType object and let the app detect stale states.
ct_fetched = ContentType.objects.get_for_id(ct.pk)
self.assertIsNone(ct_fetched.model_class())
@mock.patch('django.contrib.contenttypes.models.ContentTypeManager.get_or_create')
@mock.patch('django.contrib.contenttypes.models.ContentTypeManager.get')
def test_message_if_get_for_model_fails(self, mocked_get, mocked_get_or_create):
"""
Check that `RuntimeError` with nice error message is raised if
`get_for_model` fails because of database errors.
"""
def _test_message(mocked_method):
for ExceptionClass in (IntegrityError, OperationalError, ProgrammingError):
mocked_method.side_effect = ExceptionClass
with self.assertRaisesMessage(
RuntimeError,
"Error creating new content types. Please make sure contenttypes "
"is migrated before trying to migrate apps individually."
):
ContentType.objects.get_for_model(ContentType)
_test_message(mocked_get)
mocked_get.side_effect = ContentType.DoesNotExist
_test_message(mocked_get_or_create)
|