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alfred/tests/domain/test_media_info.py
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"""Tests for ``alfred.domain.shared.media`` — pure ffprobe dataclasses.
Exercises:
- ``AudioTrack`` / ``SubtitleTrack`` / ``VideoTrack`` — simple dataclass construction.
- ``VideoTrack.resolution`` — width-priority resolution detection (handles
widescreen/scope crops where width > height bucket), with height fallback
when width is missing.
- ``MediaInfo.resolution`` — delegates to the primary video track.
- ``MediaInfo.audio_languages`` — order-preserving deduplication.
- ``MediaInfo.is_multi_audio`` — multi-language detection.
"""
from __future__ import annotations
import pytest
from alfred.domain.shared.media import AudioTrack, MediaInfo, SubtitleTrack, VideoTrack
class TestTracks:
def test_audio_track_defaults(self):
t = AudioTrack(
index=0, codec="aac", channels=2, channel_layout="stereo", language="eng"
)
assert t.is_default is False
def test_subtitle_track_defaults(self):
t = SubtitleTrack(index=2, codec="subrip", language="fre")
assert t.is_default is False
assert t.is_forced is False
def test_video_track_defaults(self):
v = VideoTrack(index=0, codec="hevc", width=1920, height=1080)
assert v.is_default is False
class TestVideoTrackResolution:
def test_no_dimensions(self):
assert (
VideoTrack(index=0, codec=None, width=None, height=None).resolution is None
)
@pytest.mark.parametrize(
"w,expected",
[
(3840, "2160p"), # UHD lower bound
(3996, "2160p"), # cinema 4K
(1920, "1080p"),
(1280, "720p"),
(720, "576p"),
(640, "480p"),
],
)
def test_width_priority(self, w, expected):
assert (
VideoTrack(index=0, codec=None, width=w, height=1080).resolution == expected
)
def test_widescreen_scope_crop(self):
# 1920x960 (scope crop) → still 1080p because width-priority
assert (
VideoTrack(index=0, codec=None, width=1920, height=960).resolution
== "1080p"
)
@pytest.mark.parametrize(
"h,expected",
[
(2160, "2160p"),
(1080, "1080p"),
(720, "720p"),
(576, "576p"),
(480, "480p"),
],
)
def test_height_fallback_when_width_missing(self, h, expected):
assert (
VideoTrack(index=0, codec=None, width=None, height=h).resolution == expected
)
def test_width_below_buckets_falls_to_height(self):
# width=320 falls below every bucket; falls back to f"{h}p"
assert (
VideoTrack(index=0, codec=None, width=320, height=240).resolution == "240p"
)
def test_width_only_below_buckets(self):
# width=200, no height → f"{w}w" sentinel
result = VideoTrack(index=0, codec=None, width=200, height=None).resolution
assert result == "200w"
class TestMediaInfoResolutionDelegation:
def test_no_video_track(self):
assert MediaInfo().resolution is None
def test_delegates_to_primary_video(self):
m = MediaInfo(
video_tracks=[VideoTrack(index=0, codec="hevc", width=1920, height=1080)]
)
assert m.resolution == "1080p"
assert m.width == 1920
assert m.height == 1080
assert m.video_codec == "hevc"
def test_multiple_video_tracks_uses_first(self):
m = MediaInfo(
video_tracks=[
VideoTrack(index=0, codec="hevc", width=3840, height=2160),
VideoTrack(index=1, codec="mjpeg", width=320, height=240), # cover art
]
)
assert m.resolution == "2160p"
class TestAudioLanguages:
def test_empty(self):
assert MediaInfo().audio_languages == []
def test_dedup_preserves_order(self):
m = MediaInfo(
audio_tracks=[
AudioTrack(0, "eac3", 6, "5.1", "eng"),
AudioTrack(1, "ac3", 6, "5.1", "fre"),
AudioTrack(2, "ac3", 2, "stereo", "eng"), # duplicate eng
AudioTrack(3, "aac", 2, "stereo", None), # ignored
]
)
assert m.audio_languages == ["eng", "fre"]
def test_all_none_languages(self):
m = MediaInfo(
audio_tracks=[
AudioTrack(0, "aac", 2, "stereo", None),
AudioTrack(1, "aac", 2, "stereo", None),
]
)
assert m.audio_languages == []
def test_is_multi_audio_false_single_lang(self):
m = MediaInfo(audio_tracks=[AudioTrack(0, "aac", 2, "stereo", "eng")])
assert m.is_multi_audio is False
def test_is_multi_audio_true(self):
m = MediaInfo(
audio_tracks=[
AudioTrack(0, "aac", 2, "stereo", "eng"),
AudioTrack(1, "aac", 2, "stereo", "fre"),
]
)
assert m.is_multi_audio is True