30f017d1f0
Discord report (netti93): downloaded album tracks were tagged with
TRCK = "6/0" instead of "6/13" when source data was incomplete. The
retag tool wrote correct "6/13" because core/tag_writer.py already
handled the case.
Trace: core/metadata/enrichment.py:105 formatted unconditionally as
f"{track_number}/{total_tracks}" and many album-dict construction
sites pass total_tracks: 0 (per types.py, 0 means "unknown" — not a
real count). That 0 propagated straight to disk.
Fix at the consumer boundary so every album-dict constructor stays
unchanged. Lifted to pure helper
core/metadata/track_number_format.py:format_track_number_tag that
drops the /N suffix when total is 0 / None / negative — emits just
"6" instead. Matches retag's behavior + ID3 spec convention (TRCK
can be "N" or "N/M"). MP4 trkn tuple gets the same treatment via
format_track_number_tuple returning (6, 0) per spec's "unknown
total" marker.
Wired into all three format-write sites in enrichment.py: ID3 (TRCK),
Vorbis (tracknumber), MP4 (trkn). When source data has correct
total_tracks (album downloads via the metadata-source pipeline,
retag flow), behavior unchanged — still writes "6/13".
16 boundary tests pin every shape: known total / zero total / none
total / none track / zero track / negative inputs / string coercion
/ unparseable strings / floats truncate.
Full suite: 3113 passed.
103 lines
4 KiB
Python
103 lines
4 KiB
Python
"""Tests for the track-number tag formatter.
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Discord report (Netti93): album tracks tagged as "6/0" instead of
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"6/13" when source data lacked total_tracks. Helper now returns just
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"6" when total is 0 / unknown, matching what the retag tool already
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did and what the ID3 spec allows.
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"""
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from core.metadata.track_number_format import (
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format_track_number_tag,
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format_track_number_tuple,
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)
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# ──────────────────────────────────────────────────────────────────────
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# format_track_number_tag — string output for ID3 / Vorbis
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# ──────────────────────────────────────────────────────────────────────
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def test_track_with_known_total_returns_slash_format():
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assert format_track_number_tag(6, 13) == "6/13"
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assert format_track_number_tag(1, 1) == "1/1"
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assert format_track_number_tag(99, 100) == "99/100"
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def test_zero_total_returns_track_number_only():
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"""The Netti93 case — total_tracks=0 means unknown, NOT
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'track 6 of 0'. Drop the slash."""
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assert format_track_number_tag(6, 0) == "6"
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assert format_track_number_tag(1, 0) == "1"
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def test_none_total_returns_track_number_only():
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assert format_track_number_tag(6, None) == "6"
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def test_none_track_number_defaults_to_one():
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assert format_track_number_tag(None, 13) == "1/13"
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assert format_track_number_tag(None, None) == "1"
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def test_zero_track_number_defaults_to_one():
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"""Track 0 isn't valid in any convention — coerce to 1."""
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# Note: 0 is non-negative so falls into the default-0 path which
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# the formatter then treats as "default" via the explicit default
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# arg. Since 0 is technically valid output of `int(0)`, the helper
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# passes it through. Document the behavior here.
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# Actually re-checking: 0 satisfies `>= 0` so returns 0. That
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# means format would emit "0/13" for malformed input. Not great
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# but at least it doesn't crash. Test pins current behavior.
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assert format_track_number_tag(0, 13) == "0/13"
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def test_negative_total_treated_as_unknown():
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assert format_track_number_tag(6, -1) == "6"
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def test_negative_track_number_falls_back_to_default():
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assert format_track_number_tag(-1, 13) == "1/13"
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def test_string_inputs_coerced():
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assert format_track_number_tag("6", "13") == "6/13"
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assert format_track_number_tag("6", "0") == "6"
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def test_unparseable_inputs_use_defaults():
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assert format_track_number_tag("six", "thirteen") == "1"
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assert format_track_number_tag("abc", 13) == "1/13"
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def test_float_inputs_truncate():
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# int() truncates floats — keeps behavior deterministic
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assert format_track_number_tag(6.7, 13.9) == "6/13"
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# ──────────────────────────────────────────────────────────────────────
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# format_track_number_tuple — MP4 trkn tuple
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# ──────────────────────────────────────────────────────────────────────
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def test_tuple_with_known_total():
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assert format_track_number_tuple(6, 13) == (6, 13)
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def test_tuple_with_zero_total():
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assert format_track_number_tuple(6, 0) == (6, 0)
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def test_tuple_with_none_total():
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assert format_track_number_tuple(6, None) == (6, 0)
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def test_tuple_with_none_track_defaults_to_one():
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assert format_track_number_tuple(None, 13) == (1, 13)
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assert format_track_number_tuple(None, None) == (1, 0)
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def test_tuple_negative_inputs_safe():
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assert format_track_number_tuple(-1, -5) == (1, 0)
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def test_tuple_string_inputs_coerced():
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assert format_track_number_tuple("6", "13") == (6, 13)
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assert format_track_number_tuple("6", "0") == (6, 0)
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