fix styled ASS and refactor att format

tests/unit/test_track_descriptor_probe.py

@@ -0,0 +1,87 @@
+from __future__ import annotations
+
+import json
+from pathlib import Path
+import sys
+import unittest
+
+
+SRC_ROOT = Path(__file__).resolve().parents[2] / "src"
+
+if str(SRC_ROOT) not in sys.path:
+    sys.path.insert(0, str(SRC_ROOT))
+
+
+from ffx.attachment_format import AttachmentFormat  # noqa: E402
+from ffx.media_descriptor import MediaDescriptor  # noqa: E402
+from ffx.track_codec import TrackCodec  # noqa: E402
+from ffx.track_descriptor import TrackDescriptor  # noqa: E402
+from ffx.track_type import TrackType  # noqa: E402
+
+
+ASSETS_ROOT = Path(__file__).resolve().parents[1] / "assets"
+
+
+class TrackDescriptorProbeTests(unittest.TestCase):
+    def test_attachment_without_codec_name_uses_font_metadata_to_identify_ttf(self):
+        descriptor = TrackDescriptor.fromFfprobe(
+            {
+                "index": 4,
+                "codec_type": "attachment",
+                "disposition": {"default": 0},
+                "tags": {
+                    "filename": "AmazonEmberTanuki-Italic.ttf",
+                    "mimetype": "font/ttf",
+                },
+            },
+            subIndex=0,
+        )
+
+        self.assertIsNotNone(descriptor)
+        self.assertEqual(TrackType.ATTACHMENT, descriptor.getType())
+        self.assertEqual(AttachmentFormat.TTF, descriptor.getAttachmentFormat())
+        self.assertEqual(AttachmentFormat.TTF, descriptor.getFormatDescriptor())
+        self.assertEqual(TrackCodec.UNKNOWN, descriptor.getCodec())
+
+    def test_attachment_without_codec_name_still_probes_as_unknown_when_not_font(self):
+        descriptor = TrackDescriptor.fromFfprobe(
+            {
+                "index": 9,
+                "codec_type": "attachment",
+                "disposition": {"default": 0},
+                "tags": {
+                    "filename": "cover.bin",
+                    "mimetype": "application/octet-stream",
+                },
+            },
+            subIndex=0,
+        )
+
+        self.assertIsNotNone(descriptor)
+        self.assertEqual(TrackType.ATTACHMENT, descriptor.getType())
+        self.assertEqual(AttachmentFormat.UNKNOWN, descriptor.getAttachmentFormat())
+        self.assertEqual(TrackCodec.UNKNOWN, descriptor.getCodec())
+
+    def test_media_descriptor_from_boruto_probe_json_handles_attachment_streams_without_codec_name(self):
+        probe_payload = json.loads(
+            (ASSETS_ROOT / "ffprobe.out.json").read_text(encoding="utf-8")
+        )
+
+        descriptor = MediaDescriptor.fromFfprobe(
+            {"logger": None},
+            probe_payload["format"],
+            probe_payload["streams"],
+        )
+
+        track_descriptors = descriptor.getTrackDescriptors()
+        attachment_tracks = descriptor.getAttachmentTracks()
+
+        self.assertEqual(14, len(track_descriptors))
+        self.assertEqual(10, len(attachment_tracks))
+        self.assertTrue(
+            all(track.getAttachmentFormat() == AttachmentFormat.TTF for track in attachment_tracks)
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()