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
|
from nose.tools import assert_true, assert_false
from imagekit.cachefiles import ImageCacheFile
from mock import Mock
from .utils import create_image
from django.core.files.storage import FileSystemStorage
from imagekit.cachefiles.backends import Simple as SimpleCFBackend
from imagekit.cachefiles.strategies import Optimistic as OptimisticStrategy
class ImageGenerator(object):
def generate(self):
return create_image()
def get_hash(self):
return 'abc123'
def get_image_cache_file():
storage = Mock(FileSystemStorage)
backend = SimpleCFBackend()
strategy = OptimisticStrategy()
generator = ImageGenerator()
return ImageCacheFile(generator, storage=storage,
cachefile_backend=backend,
cachefile_strategy=strategy)
def test_no_io_on_bool():
"""
When checking the truthiness of an ImageCacheFile, the storage shouldn't
peform IO operations.
"""
file = get_image_cache_file()
bool(file)
assert_false(file.storage.exists.called)
assert_false(file.storage.open.called)
def test_no_io_on_url():
"""
When getting the URL of an ImageCacheFile, the storage shouldn't be
checked.
"""
file = get_image_cache_file()
file.url
assert_false(file.storage.exists.called)
assert_false(file.storage.open.called)
|
