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
|
"""
Test cases for the template loaders
Note: This test requires setuptools!
"""
import os.path
import sys
import types
import unittest
try:
import pkg_resources
except ImportError:
pkg_resources = None
from django.template import TemplateDoesNotExist, Context
from django.template.loaders import cached, eggs
from django.template.engine import Engine
from django.template import loader
from django.test import SimpleTestCase, ignore_warnings, override_settings
from django.utils import six
from django.utils.deprecation import RemovedInDjango20Warning
from django.utils._os import upath
from django.utils.six import StringIO
TEMPLATES_DIR = os.path.join(os.path.dirname(upath(__file__)), 'templates')
GLOBAL_TEMPLATES_DIR = os.path.join(os.path.dirname(os.path.dirname(upath(__file__))), 'templates')
# Mock classes and objects for pkg_resources functions.
class MockLoader(object):
pass
def create_egg(name, resources):
"""
Creates a mock egg with a list of resources.
name: The name of the module.
resources: A dictionary of resources. Keys are the names and values the data.
"""
egg = types.ModuleType(name)
egg.__loader__ = MockLoader()
egg.__path__ = ['/some/bogus/path/']
egg.__file__ = '/some/bogus/path/__init__.pyc'
egg._resources = resources
sys.modules[name] = egg
@unittest.skipUnless(pkg_resources, 'setuptools is not installed')
class EggLoaderTest(SimpleTestCase):
def setUp(self):
self.loader = eggs.Loader(Engine.get_default())
# Defined here b/c at module scope we may not have pkg_resources
class MockProvider(pkg_resources.NullProvider):
def __init__(self, module):
pkg_resources.NullProvider.__init__(self, module)
self.module = module
def _has(self, path):
return path in self.module._resources
def _isdir(self, path):
return False
def get_resource_stream(self, manager, resource_name):
return self.module._resources[resource_name]
def _get(self, path):
return self.module._resources[path].read()
def _fn(self, base, resource_name):
return os.path.normcase(resource_name)
pkg_resources._provider_factories[MockLoader] = MockProvider
self.empty_egg = create_egg("egg_empty", {})
self.egg_1 = create_egg("egg_1", {
os.path.normcase('templates/y.html'): StringIO("y"),
os.path.normcase('templates/x.txt'): StringIO("x"),
})
@override_settings(INSTALLED_APPS=['egg_empty'])
def test_empty(self):
"Loading any template on an empty egg should fail"
with self.assertRaises(TemplateDoesNotExist):
self.loader.load_template_source("not-existing.html")
@override_settings(INSTALLED_APPS=['egg_1'])
def test_non_existing(self):
"Template loading fails if the template is not in the egg"
with self.assertRaises(TemplateDoesNotExist):
self.loader.load_template_source("not-existing.html")
@override_settings(INSTALLED_APPS=['egg_1'])
def test_existing(self):
"A template can be loaded from an egg"
contents, template_name = self.loader.load_template_source("y.html")
self.assertEqual(contents, "y")
self.assertEqual(template_name, "egg:egg_1:templates/y.html")
def test_not_installed(self):
"Loading an existent template from an egg not included in any app should fail"
with self.assertRaises(TemplateDoesNotExist):
self.loader.load_template_source("y.html")
class CachedLoader(SimpleTestCase):
def setUp(self):
self.loader = cached.Loader(Engine.get_default(), [
'django.template.loaders.filesystem.Loader',
])
def test_templatedir_caching(self):
"Check that the template directories form part of the template cache key. Refs #13573"
# Retrieve a template specifying a template directory to check
t1, name = self.loader.find_template('test.html', (os.path.join(TEMPLATES_DIR, 'first'),))
# Now retrieve the same template name, but from a different directory
t2, name = self.loader.find_template('test.html', (os.path.join(TEMPLATES_DIR, 'second'),))
# The two templates should not have the same content
self.assertNotEqual(t1.render(Context({})), t2.render(Context({})))
def test_missing_template_is_cached(self):
"#19949 -- Check that the missing template is cached."
# Check that 'missing.html' isn't already in cache before 'missing.html' is loaded
with self.assertRaises(KeyError):
self.loader.template_cache["missing.html"]
# Try to load it, it should fail
with self.assertRaises(TemplateDoesNotExist):
self.loader.load_template("missing.html")
# Verify that the fact that the missing template, which hasn't been found, has actually
# been cached:
cached_miss = self.loader.template_cache["missing.html"]
self.assertEqual(cached_miss, TemplateDoesNotExist,
"Cached template loader doesn't cache file lookup misses. It should.")
@override_settings(TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [TEMPLATES_DIR],
}])
class RenderToStringTest(SimpleTestCase):
def test_basic(self):
self.assertEqual(loader.render_to_string('test_context.html'), 'obj:\n')
def test_basic_context(self):
self.assertEqual(loader.render_to_string('test_context.html',
{'obj': 'test'}), 'obj:test\n')
def test_empty_list(self):
six.assertRaisesRegex(self, TemplateDoesNotExist,
'No template names provided$',
loader.render_to_string, [])
def test_select_templates_from_empty_list(self):
six.assertRaisesRegex(self, TemplateDoesNotExist,
'No template names provided$',
loader.select_template, [])
@ignore_warnings(category=RemovedInDjango20Warning)
@override_settings(TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [TEMPLATES_DIR],
}])
class DeprecatedRenderToStringTest(SimpleTestCase):
def test_existing_context_kept_clean(self):
context = Context({'obj': 'before'})
output = loader.render_to_string('test_context.html', {'obj': 'after'},
context_instance=context)
self.assertEqual(output, 'obj:after\n')
self.assertEqual(context['obj'], 'before')
def test_no_empty_dict_pushed_to_stack(self):
"""
No empty dict should be pushed to the context stack when render_to_string
is called without any argument (#21741).
"""
# The stack should have a length of 1, corresponding to the builtins
self.assertEqual('1',
loader.render_to_string('test_context_stack.html').strip())
self.assertEqual('1',
loader.render_to_string('test_context_stack.html', context_instance=Context()).strip())
@ignore_warnings(category=RemovedInDjango20Warning)
@override_settings(TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
}])
class TemplateDirsOverrideTest(SimpleTestCase):
dirs_tuple = (os.path.join(os.path.dirname(upath(__file__)), 'other_templates'),)
dirs_list = list(dirs_tuple)
dirs_iter = (dirs_tuple, dirs_list)
def test_render_to_string(self):
for dirs in self.dirs_iter:
self.assertEqual(loader.render_to_string('test_dirs.html', dirs=dirs), 'spam eggs\n')
def test_get_template(self):
for dirs in self.dirs_iter:
template = loader.get_template('test_dirs.html', dirs=dirs)
self.assertEqual(template.render(), 'spam eggs\n')
def test_select_template(self):
for dirs in self.dirs_iter:
template = loader.select_template(['test_dirs.html'], dirs=dirs)
self.assertEqual(template.render(), 'spam eggs\n')
@override_settings(TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [GLOBAL_TEMPLATES_DIR],
'OPTIONS': {
'loaders': [
('django.template.loaders.cached.Loader', [
'django.template.loaders.filesystem.Loader',
'django.template.loaders.app_directories.Loader',
]),
],
},
}])
class PriorityCacheLoader(SimpleTestCase):
def test_basic(self):
"""
Check that the order of template loader works. Refs #21460.
"""
t1 = loader.get_template('priority/foo.html')
self.assertEqual(t1.render(), 'priority\n')
@override_settings(TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [GLOBAL_TEMPLATES_DIR],
'OPTIONS': {
'loaders': [
'django.template.loaders.filesystem.Loader',
'django.template.loaders.app_directories.Loader',
],
},
}])
class PriorityLoader(SimpleTestCase):
def test_basic(self):
"""
Check that the order of template loader works. Refs #21460.
"""
t1 = loader.get_template('priority/foo.html')
self.assertEqual(t1.render(), 'priority\n')
|
