def test_metadata_from_initial_data(stream_dict):
initial_data = extract.initial_data(stream_dict)
ytmd = extract.metadata(json.loads(initial_data))
assert len(ytmd.raw_metadata) > 0
assert 'contents' in ytmd.raw_metadata[0]
assert len(ytmd.metadata) > 0
assert 'Song' in ytmd.metadata[0]
def metadata(self) -> Optional[YouTubeMetadata]:
"""Get the metadata for the video.
:rtype: YouTubeMetadata
"""
if self._metadata:
return self._metadata
else:
self._metadata = extract.metadata(self.initial_data)
return self._metadata
def test_extract_metadata_empty():
ytmd = extract.metadata({})
assert ytmd._raw_metadata == []