Add MusicXML onset verticality tests

tests/test_musicxml_onset_verticalities_additional.py

@@ -0,0 +1,108 @@
+"""Focused tests for ``iav.musicxml_io._onset_verticalities`` uncovered branches."""
+
+from __future__ import annotations
+
+import pytest
+
+from iav.musicxml_io._onset_verticalities import (
+    parse_musicxml_verticalities_bytes,
+    parse_musicxml_verticalities_bytes_with_sounding_transpose,
+)
+
+
+def _score(body: str) -> bytes:
+    return (
+        '<?xml version="1.0" encoding="UTF-8"?>'
+        f'<score-partwise version="3.1"><part id="P1">{body}</part></score-partwise>'
+    ).encode("utf-8")
+
+
+def _measure(inner: str, *, attributes: str = "<divisions>1</divisions>") -> str:
+    return f'<measure number="1"><attributes>{attributes}</attributes>{inner}</measure>'
+
+
+def _note(step: str, octave: int, *, duration: int = 1) -> str:
+    return (
+        f"<note><pitch><step>{step}</step><octave>{octave}</octave></pitch>"
+        f"<duration>{duration}</duration></note>"
+    )
+
+
+def test_parse_onset_verticalities_when_get_musicxml_bytes_none(monkeypatch):
+    monkeypatch.setattr(
+        "iav.musicxml_io._onset_verticalities.get_musicxml_bytes",
+        lambda _b: None,
+    )
+    slices, skipped = parse_musicxml_verticalities_bytes(
+        b"ignored",
+        include_grace=False,
+        include_cue=False,
+    )
+    assert slices == []
+    assert skipped == 0
+
+
+def test_transpose_wrapper_passes_apply_musicxml_transpose_true(monkeypatch):
+    captured: dict = {}
+
+    def _capture_impl(file_bytes, include_grace, include_cue, *, apply_musicxml_transpose):
+        captured["file_bytes"] = file_bytes
+        captured["include_grace"] = include_grace
+        captured["include_cue"] = include_cue
+        captured["apply_musicxml_transpose"] = apply_musicxml_transpose
+        return [], 0
+
+    monkeypatch.setattr(
+        "iav.musicxml_io._onset_verticalities._parse_musicxml_verticalities_impl",
+        _capture_impl,
+    )
+    payload = b"<score-partwise/>"
+    parse_musicxml_verticalities_bytes_with_sounding_transpose(
+        payload,
+        include_grace=True,
+        include_cue=False,
+    )
+    assert captured == {
+        "file_bytes": payload,
+        "include_grace": True,
+        "include_cue": False,
+        "apply_musicxml_transpose": True,
+    }
+
+
+def test_written_vs_sounding_onset_verticalities_differ_with_transpose():
+    body = _measure(
+        _note("D", 4),
+        attributes="<divisions>1</divisions><transpose><chromatic>-2</chromatic></transpose>",
+    )
+    xml = _score(body)
+    written, skipped_w = parse_musicxml_verticalities_bytes(
+        xml,
+        include_grace=False,
+        include_cue=False,
+    )
+    sounding, skipped_s = parse_musicxml_verticalities_bytes_with_sounding_transpose(
+        xml,
+        include_grace=False,
+        include_cue=False,
+    )
+    assert skipped_w == 0
+    assert skipped_s == 0
+    assert len(written) == 1
+    assert len(sounding) == 1
+    assert written[0]["time"] == pytest.approx(0.0)
+    assert sounding[0]["time"] == pytest.approx(0.0)
+    assert written[0]["notes"] == [("D", 0.0, 4)]
+    assert sounding[0]["notes"] == [("C", 0.0, 4)]
+
+
+def test_non_transposed_baseline_matches_written_pitch_only():
+    body = _measure(_note("E", 4))
+    xml = _score(body)
+    written, _ = parse_musicxml_verticalities_bytes(xml, include_grace=False, include_cue=False)
+    sounding, _ = parse_musicxml_verticalities_bytes_with_sounding_transpose(
+        xml,
+        include_grace=False,
+        include_cue=False,
+    )
+    assert written == sounding == [{"time": 0.0, "notes": [("E", 0.0, 4)]}]