def iter_test_assets(valid_extensions):
for finder in finders.get_finders():
for path, storage in finder.list(()):
extension = os.path.splitext(path)[1].lower()
if not valid_extensions or extension in valid_extensions:
if getattr(storage, "prefix", None):
path = os.path.join(storage.prefix, path)
asset = StaticAsset(path)
try:
default_asset_cache.get_name(asset)
except:
continue
else:
yield asset
