"""Seam tests for core/video/youtube.py — the YouTube channel resolver. Pure URL parsing + yt-dlp-dict → our-shape mapping are tested directly; the one network call is exercised through an injected fake YoutubeDL, so nothing here touches the network. """ import pytest from core.video import youtube as yt # ── parse_channel_url ──────────────────────────────────────────────────────── @pytest.mark.parametrize("raw,expected", [ ("https://www.youtube.com/@PlayStation", "https://www.youtube.com/@PlayStation/videos"), ("https://www.youtube.com/@PlayStation/videos", "https://www.youtube.com/@PlayStation/videos"), ("https://www.youtube.com/@PlayStation/streams", "https://www.youtube.com/@PlayStation/videos"), ("http://youtube.com/@GoodMythicalMorning", "https://www.youtube.com/@GoodMythicalMorning/videos"), ("youtube.com/@PlayStation", "https://www.youtube.com/@PlayStation/videos"), ("m.youtube.com/@PlayStation", "https://www.youtube.com/@PlayStation/videos"), ("https://www.youtube.com/channel/UCabc123", "https://www.youtube.com/channel/UCabc123/videos"), ("https://www.youtube.com/c/LinusTechTips", "https://www.youtube.com/c/LinusTechTips/videos"), ("https://www.youtube.com/user/PewDiePie", "https://www.youtube.com/user/PewDiePie/videos"), ("@PlayStation", "https://www.youtube.com/@PlayStation/videos"), ("PlayStation", "https://www.youtube.com/@PlayStation/videos"), # bare → @handle ]) def test_parse_channel_url_accepts_channel_forms(raw, expected): assert yt.parse_channel_url(raw) == expected @pytest.mark.parametrize("raw", [ "", " ", None, "https://www.youtube.com/watch?v=dQw4w9WgXcQ", # a video, not a channel "https://www.youtube.com/playlist?list=PL123", # a playlist "https://www.youtube.com/", # home "https://youtu.be/dQw4w9WgXcQ", # short video link "https://vimeo.com/@someone", # not youtube "https://www.youtube.com/shorts/abc123", # a short, not a channel ]) def test_parse_channel_url_rejects_non_channels(raw): assert yt.parse_channel_url(raw) is None # ── shape_channel ──────────────────────────────────────────────────────────── def _flat_info(): return { "channel_id": "UCPlayStation", "channel": "PlayStation", "uploader": "PlayStation", "uploader_id": "@PlayStation", "channel_follower_count": 14_000_000, "playlist_count": 1200, "thumbnails": [ {"url": "http://img/small.jpg", "width": 88, "height": 88}, {"url": "http://img/avatar.jpg", "id": "avatar_uncropped", "width": 800, "height": 800}, {"url": "http://img/banner.jpg", "id": "banner_uncropped", "width": 2048, "height": 1152}, ], "entries": [ {"id": "vid1", "title": "State of Play", "timestamp": 1_700_000_000, "duration": 3600, "view_count": 50000, "thumbnails": [{"url": "http://t/1.jpg", "width": 320, "height": 180}]}, {"id": "vid2", "title": "Trailer", "upload_date": "20240115", "duration": 120, "thumbnail": "http://t/2.jpg"}, {"id": "vid3", "title": "No date video"}, # sparse flat entry None, # yt-dlp can yield Nones {"title": "missing id — skip"}, # no id → skipped ], } def test_shape_channel_maps_channel_fields(): out = yt.shape_channel(_flat_info()) assert out["youtube_id"] == "UCPlayStation" assert out["title"] == "PlayStation" assert out["handle"] == "@PlayStation" assert out["avatar_url"] == "http://img/avatar.jpg" # picked by id, not just size assert out["banner_url"] == "http://img/banner.jpg" # banner separated from avatar assert out["subscriber_count"] == 14_000_000 assert out["video_count"] == 1200 # playlist_count, not len(videos) def test_shape_channel_maps_and_filters_videos(): out = yt.shape_channel(_flat_info()) vids = out["videos"] # the None and the id-less entry are dropped assert [v["youtube_id"] for v in vids] == ["vid1", "vid2", "vid3"] # timestamp → ISO date assert vids[0]["published_at"] == "2023-11-14" assert vids[0]["duration_seconds"] == 3600 assert vids[0]["thumbnail_url"] == "http://t/1.jpg" # upload_date 'YYYYMMDD' → ISO date; plain 'thumbnail' string honored assert vids[1]["published_at"] == "2024-01-15" assert vids[1]["thumbnail_url"] == "http://t/2.jpg" # sparse entry: no date, no crash assert vids[2]["published_at"] is None assert vids[2]["duration_seconds"] is None def test_shape_channel_respects_limit(): out = yt.shape_channel(_flat_info(), limit=1) assert len(out["videos"]) == 1 assert out["videos"][0]["youtube_id"] == "vid1" def test_shape_channel_uploader_id_not_a_handle_is_dropped(): info = {"channel_id": "UCx", "channel": "X", "uploader_id": "UCx", "entries": []} assert yt.shape_channel(info)["handle"] is None # ── resolve_channel (network call injected) ────────────────────────────────── class _FakeYDL: """Stand-in for yt_dlp.YoutubeDL: records opts, returns a canned info dict.""" last_opts = None last_url = None def __init__(self, opts): _FakeYDL.last_opts = opts self.opts = opts def __enter__(self): return self def __exit__(self, *a): return False def extract_info(self, url, download=False): _FakeYDL.last_url = url assert download is False return _flat_info() def test_resolve_channel_happy_path_uses_canonical_url_and_limit(): out = yt.resolve_channel("https://www.youtube.com/@PlayStation", limit=2, ydl_factory=_FakeYDL) assert out["youtube_id"] == "UCPlayStation" assert len(out["videos"]) == 2 # resolver normalizes to the /videos uploads URL and passes the limit through assert _FakeYDL.last_url == "https://www.youtube.com/@PlayStation/videos" assert _FakeYDL.last_opts["playlistend"] == 2 assert _FakeYDL.last_opts["extract_flat"] is True def test_resolve_channel_rejects_non_channel_without_network(): called = [] def factory(opts): called.append(opts) raise AssertionError("should not be called for a non-channel URL") assert yt.resolve_channel("https://www.youtube.com/watch?v=abc", ydl_factory=factory) is None assert called == [] def test_resolve_channel_returns_none_on_extractor_error(): class _Boom: def __init__(self, opts): pass def __enter__(self): return self def __exit__(self, *a): return False def extract_info(self, url, download=False): raise RuntimeError("DownloadError: channel not found") assert yt.resolve_channel("@nope", ydl_factory=_Boom) is None def test_resolve_channel_none_when_info_has_no_channel_id(): class _NoId: def __init__(self, opts): pass def __enter__(self): return self def __exit__(self, *a): return False def extract_info(self, url, download=False): return {"entries": [{"id": "v", "title": "t"}]} # no channel_id/id assert yt.resolve_channel("@x", ydl_factory=_NoId) is None # ── video_detail (full single-video metadata) ──────────────────────────────── def _video_info(): return { "id": "vid1", "title": "State of Play", "description": "Everything announced.", "duration": 3725, "view_count": 1_250_000, "like_count": 42_000, "timestamp": 1_700_000_000, "channel": "PlayStation", "channel_id": "UCPlay", "webpage_url": "https://www.youtube.com/watch?v=vid1", "tags": ["ps5", "trailer"], "thumbnails": [{"url": "http://t/hi.jpg", "width": 1280, "height": 720}], } class _FakeVideoYDL: last_url = None def __init__(self, opts): self.opts = opts def __enter__(self): return self def __exit__(self, *a): return False def extract_info(self, url, download=False): _FakeVideoYDL.last_url = url assert download is False # full (non-flat) extraction: extract_flat must NOT be set assert "extract_flat" not in self.opts return _video_info() def test_video_detail_pulls_full_metadata(): out = yt.video_detail("vid1", ydl_factory=_FakeVideoYDL) assert out["youtube_id"] == "vid1" assert out["description"] == "Everything announced." assert out["duration_seconds"] == 3725 assert out["view_count"] == 1_250_000 and out["like_count"] == 42_000 assert out["published_at"] == "2023-11-14" assert out["channel_title"] == "PlayStation" and out["channel_id"] == "UCPlay" assert out["webpage_url"] == "https://www.youtube.com/watch?v=vid1" assert out["tags"] == ["ps5", "trailer"] # a raw id is turned into a watch URL assert _FakeVideoYDL.last_url == "https://www.youtube.com/watch?v=vid1" def test_video_detail_accepts_watch_url_and_handles_failure(): yt.video_detail("https://www.youtube.com/watch?v=abc", ydl_factory=_FakeVideoYDL) assert _FakeVideoYDL.last_url == "https://www.youtube.com/watch?v=abc" class _Boom(_FakeVideoYDL): def extract_info(self, url, download=False): raise RuntimeError("unavailable") assert yt.video_detail("x", ydl_factory=_Boom) is None assert yt.video_detail("", ydl_factory=_FakeVideoYDL) is None