def test_clear_cache(self):
from edwin.models.photo import Photo
photo = Photo(self.photo_file)
photo.id = '123456'
from edwin.views.image import ImageApplication
app = ImageApplication(self.tmpdir)
version = app.version(photo, (300, 300))
import os
import webob
cache_file = os.path.join(self.tmpdir, '123456.300x300.jpg')
request = webob.Request.blank('/image/123456.300x300.jpg')
request.app_context = DummyAppContextCatalog(photo)
request.authenticated_principals = ['group.Administrators']
app(request, version['fname'])
self.failUnless(os.path.exists(cache_file))
app.clear_cache()
self.failIf(os.path.exists(cache_file))
