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python-backend/tests/conftest.py

@@ -6,29 +6,93 @@ from typing import Any
 import pytest
 from ruamel.yaml import YAML
 
+#: Half a second of silence, so ``mutagen`` reports a real duration and tags can be
+#: written onto a file that is actually an MP3. Generated once with ffmpeg.
+SILENCE = Path(__file__).parent / "data" / "silence.mp3"
+
 VALID_CONFIG: dict[str, Any] = {
     "general": {
-        "figure_folder": "music",
+        "library": {"root": "music", "cache": ".cache"},
         "serial_port": "/dev/ttyUSB0",
+        "alsa_device": "simulate",
         "min_volume": 0,
         "max_volume": 60,
         "initial_volume": 40,
     },
     "figures": {
         "fuchs": {"id": "04a1b2c3d4", "colors": ["#ff6600", "#ffcc00", "#331100", "wff"]},
-        "eule": {"id": "04b2c3d4e5", "colors": ["#3355ff", "#66aaff", "#001133", "#ffffff"]},
+        # One of each, so the figure-kind branch is exercised by every fixture.
+        "eule": {
+            "id": "04b2c3d4e5",
+            "colors": ["#3355ff", "#66aaff", "#001133", "#ffffff"],
+            "kind": "book",
+        },
     },
 }
 
 
+def write_track(path: Path, **tags: str) -> Path:
+    """Copy the silence fixture to ``path`` and stamp the given easy-mode ID3 tags."""
+    import mutagen
+
+    path.parent.mkdir(parents=True, exist_ok=True)
+    path.write_bytes(SILENCE.read_bytes())
+    if tags:
+        audio = mutagen.File(path, easy=True)
+        if audio.tags is None:
+            audio.add_tags()
+        for key, value in tags.items():
+            audio[key] = value
+        audio.save()
+    return path
+
+
 @pytest.fixture
 def config_dir(tmp_path: Path) -> Path:
-    """A directory with a valid ``music/`` tree and two figures' worth of tracks."""
+    """A directory holding a small but structurally real music library.
+
+    Two figure folders (matching ``VALID_CONFIG``), one music album, one audiobook and
+    one podcast - enough for every branch the scanner has.
+    """
+    root = tmp_path / "music"
+
     for figure, tracks in (("fuchs", 3), ("eule", 2)):
-        folder = tmp_path / "music" / figure
-        folder.mkdir(parents=True)
         for index in range(tracks):
-            (folder / f"{index:02d} - track.mp3").write_bytes(b"")
+            write_track(
+                root / "Figuren" / figure / f"{index:02d} - track.mp3",
+                title=f"Track {index}",
+                album="Waldlieder",
+                albumartist="Die Tiere",
+            )
+
+    for index in range(2):
+        write_track(
+            root / "Musik" / "Kinderparty - Kinderparty Lieder" / f"{index:02d} - lied.mp3",
+            title=f"Lied {index}",
+            album="Kinderparty Lieder",
+            albumartist="Kinderparty",
+        )
+
+    for index in range(2):
+        write_track(
+            root / "Hörbücher" / "Conni - Conni in den Bergen" / f"{index:02d} - teil.mp3",
+            title=f"Teil {index}",
+            album="Conni in den Bergen",
+            albumartist="Conni, Julia Boehme",
+        )
+
+    podcast = root / "Kinderpodcasts" / "Wissen macht Ah"
+    for date, title in (("20240101", "Alt"), ("20260101", "Neu")):
+        write_track(
+            podcast / f"{date} - {title}.mp3",
+            title=title,
+            album="Wissen macht Ah! - Podcast",
+            albumartist="Ein Name, Noch Einer, Und Einer",
+        )
+    # The two kinds of scratch file a podcast downloader leaves behind.
+    (podcast / "archive.json").write_text("[]")
+    (podcast / ".podcast-dl-abc.download.tmp").write_bytes(b"")
+
     return tmp_path