def test_etag_parsing_helper(self, asgi, header_value):
# NOTE(kgriffs): Test a couple of cases that are not directly covered
# elsewhere (but that we want the helper to still support
# for the sake of avoiding suprises if they are ever called without
# preflighting the header value).
assert _parse_etags(header_value) is None
def if_none_match(self):
if self._cached_if_none_match is None:
header_value = self._asgi_headers.get('if-none-match')
if header_value:
self._cached_if_none_match = helpers._parse_etags(header_value)
return self._cached_if_none_match
def test_etag_parsing_helper(self, header_value):
# NOTE(kgriffs): Test a couple of cases that are not directly covered
# elsewhere (but that we want the helper to still support
# for the sake of avoiding suprises if they are ever called without
# preflighting the header value).
assert _parse_etags(header_value) is None
def if_match(self):
# TODO(kgriffs): It may make sense at some point to create a
# header property generator that DRY's up the memoization
# pattern for us.
# PERF(kgriffs): It probably isn't worth it to set
# self._cached_if_match to a special type/object to distinguish
# between the variable being unset and the header not being
# present in the request. The reason is that if the app
# gets a None back on the first reference to property, it
# probably isn't going to access the property again (TBD).
if self._cached_if_match is None:
header_value = self._asgi_headers.get('if-match')
if header_value:
self._cached_if_match = helpers._parse_etags(header_value)
return self._cached_if_match
