def test_old_symlink_is_replaced(self, symlink_src, tmpdir):
# Create the dst, and write some text into it
dst = str(tmpdir.join('foo'))
open(dst, 'wb').write(b'I am the old file')
# Now create a symlink to dst, and check it's become a symlink, and
# the old contents are gone
utils.symlink(symlink_src, dst)
self._assert_is_symlink(symlink_src, dst)
assert open(dst, 'wb') != b'I am the old file'
def store(self, image_request, image_info, canonical_fp):
# Because we're working with files, it's more practical to put derived
# images where the cache expects them when they are created (i.e. by
# Loris#_make_image()), so __setitem__, as defined by the dict API
# doesn't really work. Instead, the logic related to where an image
# should be put is encapulated in the ImageCache#get_request_cache_path
# and ImageCache#get_canonical_cache_path methods.
#
# Instead, __setitem__ simply makes a symlink in the cache from the
# requested syntax to the canonical syntax to enable faster lookups of
# the same non-canonical request the next time.
#
# So: when Loris#_make_image is called, it gets a path from
# ImageCache#get_canonical_cache_path and passes that to the
# transformer.
if not image_request.is_canonical(image_info):
requested_fp = self.get_request_cache_path(image_request)
symlink(src=canonical_fp, dst=requested_fp)
def test_creates_symlink(self, symlink_src, tmpdir):
dst = str(tmpdir.join('foo'))
utils.symlink(symlink_src, dst)
self._assert_is_symlink(symlink_src, dst)
def test_circular_symlink_is_ignored(self, symlink_src):
utils.symlink(symlink_src, symlink_src)
assert os.path.isfile(symlink_src)
def test_creates_intermediate_directories(self, symlink_src, tmpdir):
dst = str(tmpdir.join('foo/bar/baz'))
utils.symlink(symlink_src, dst)
self._assert_is_symlink(symlink_src, dst)