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|
#!/usr/bin/env python
# -*- encoding: utf-8 -*-
# CREATED:2020-07-16 16:49:03 by Brian McFee <brian.mcfee@nyu.edu>
"""Unit tests for music notations"""
import os
import sys
try:
os.environ.pop("LIBROSA_CACHE_DIR")
except KeyError:
pass
import warnings
import numpy as np
import pytest
import librosa
@pytest.mark.xfail(raises=librosa.ParameterError)
def test_key_to_notes_badkey():
librosa.key_to_notes("not a key")
@pytest.mark.xfail(raises=librosa.ParameterError)
def test_simplify_note_badnote():
librosa.core.notation.__simplify_note("not a note")
@pytest.mark.xfail(raises=librosa.ParameterError)
def test_note_to_degree_badnote():
librosa.core.notation.__note_to_degree("not a note")
@pytest.mark.parametrize(
"key,ref_notes",
[
# Test for implicit accidentals, ties
("C:maj", ["C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B"]),
("A:min", ["C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B"]),
# Test for implicit accidentals, unambiguous
("D:maj", ["Cn", "C#", "D", "D#", "E", "Fn", "F#", "G", "G#", "A", "A#", "B"]),
(
"F:min",
["C", "Db", "Dn", "Eb", "En", "F", "Gb", "G", "Ab", "An", "Bb", "Bn"],
),
# Test for proper enharmonics with ties
(
"Eb:min",
["Cn", "Db", "Dn", "Eb", "En", "F", "Gb", "Gn", "Ab", "An", "Bb", "Cb"],
),
(
"D#:min",
["Cn", "C#", "Dn", "D#", "En", "E#", "F#", "Gn", "G#", "An", "A#", "B"],
),
(
"Gb:maj",
["Cn", "Db", "Dn", "Eb", "En", "F", "Gb", "Gn", "Ab", "An", "Bb", "Cb"],
),
(
"F#:maj",
["Cn", "C#", "Dn", "D#", "En", "E#", "F#", "Gn", "G#", "An", "A#", "B"],
),
# Test for theoretical keys
(
"G#:maj",
["B#", "C#", "Dn", "D#", "En", "E#", "F#", "F##", "G#", "An", "A#", "Bn"],
),
(
"Cb:min",
["Cn", "Db", "Ebb", "Eb", "Fb", "Fn", "Gb", "Abb", "Ab", "Bbb", "Bb", "Cb"],
),
# Test the edge case of theoretical sharps
(
"B#:maj",
[
"B#",
"C#",
"C##",
"D#",
"D##",
"E#",
"F#",
"F##",
"G#",
"G##",
"A#",
"A##",
],
),
# Test for multiple accidentals in tonic name.
(
"F##:maj",
[
"B#",
"C#",
"C##",
"D#",
"D##",
"E#",
"E##",
"F##",
"G#",
"G##",
"A#",
"A##",
],
),
(
"Fbb:maj",
[
"Dbb",
"Db",
"Ebb",
"Fbb",
"Fb",
"Gbb",
"Gb",
"Abb",
"Bbbb",
"Bbb",
"Cbb",
"Cb",
],
),
(
"A###:min",
[
"A###",
"B##",
"B###",
"C###",
"D##",
"D###",
"E##",
"E###",
"F###",
"G##",
"G###",
"A##",
],
),
# Testing that the modes work. These were copied from the output generated in the discussion at https://github.com/librosa/librosa/pull/1739#issuecomment-1711949365.
(
"E:ion",
["Cn", "C#", "Dn", "D#", "E", "Fn", "F#", "Gn", "G#", "A", "A#", "B"],
),
(
"E#:mix",
["B#", "C#", "C##", "D#", "En", "E#", "F#", "F##", "G#", "G##", "A#", "Bn"],
),
(
"E#:lyd",
[
"B#",
"C#",
"C##",
"D#",
"D##",
"E#",
"F#",
"F##",
"G#",
"G##",
"A#",
"A##",
],
),
(
"Gb:dor",
["Cn", "Db", "Dn", "Eb", "Fb", "Fn", "Gb", "Gn", "Ab", "Bbb", "Bb", "Cb"],
),
(
"Gb:phr",
[
"Dbb",
"Db",
"Ebb",
"Eb",
"Fb",
"Gbb",
"Gb",
"Abb",
"Ab",
"Bbb",
"Bb",
"Cb",
],
),
(
"B#:aeol",
["B#", "C#", "C##", "D#", "En", "E#", "F#", "F##", "G#", "An", "A#", "Bn"],
),
(
"B#:loc",
["B#", "C#", "Dn", "D#", "En", "E#", "F#", "Gn", "G#", "An", "A#", "Bn"],
),
],
)
def test_key_to_notes(key, ref_notes):
notes = librosa.key_to_notes(key, unicode=False, natural=True)
assert len(notes) == len(ref_notes)
for n, rn in zip(notes, ref_notes):
assert n == rn
@pytest.mark.parametrize(
"key,ref_notes,natural",
[
(
"G#:maj",
["B♯", "C♯", "D", "D♯", "E", "E♯", "F♯", "F𝄪", "G♯", "A", "A♯", "B"],
False,
),
(
"Cb:min",
["C", "D♭", "E𝄫", "E♭", "F♭", "F", "G♭", "A𝄫", "A♭", "B𝄫", "B♭", "C♭"],
False,
),
(
"G#:maj",
["B♯", "C♯", "D♮", "D♯", "E♮", "E♯", "F♯", "F𝄪", "G♯", "A♮", "A♯", "B♮"],
True,
),
(
"G#:ion",
["B♯", "C♯", "D♮", "D♯", "E♮", "E♯", "F♯", "F𝄪", "G♯", "A♮", "A♯", "B♮"],
True,
),
],
)
def test_key_to_notes_unicode(key, ref_notes, natural):
notes = librosa.key_to_notes(key, unicode=True, natural=natural)
assert len(notes) == len(ref_notes)
for n, rn in zip(notes, ref_notes):
assert n == rn
@pytest.mark.parametrize(
"key,ref_notes",
[
(
"G#:maj",
["B♯", "C♯", "D", "D♯", "E", "E♯", "F♯", "F𝄪", "G♯", "A", "A♯", "B"],
),
(
"Cb:min",
["C", "D♭", "E𝄫", "E♭", "F♭", "F", "G♭", "A𝄫", "A♭", "B𝄫", "B♭", "C♭"],
),
],
)
def test_key_to_notes_no_natural(key, ref_notes):
notes = librosa.key_to_notes(key, unicode=True, natural=False)
assert len(notes) == len(ref_notes)
for n, rn in zip(notes, ref_notes):
assert n == rn
@pytest.mark.parametrize(
"note, ref_simplified_ascii",
[
("G####bb", "G##"),
("F#n", "F#"),
],
)
def test_simplify_note_ascii(note, ref_simplified_ascii):
simplified_note = librosa.core.notation.__simplify_note(note, unicode=False)
for n, rn in zip(simplified_note, ref_simplified_ascii):
assert n == rn
@pytest.mark.parametrize(
"notes, ref_simplified_array",
[(["C♭♯", "C♭♭♭"], ["C", "C♭𝄫"])],
)
def test_simplify_note_array(notes, ref_simplified_array):
simplified_note = librosa.core.notation.__simplify_note(notes)
for n, rn in zip(simplified_note, ref_simplified_array):
assert n == rn
@pytest.mark.xfail(raises=librosa.ParameterError)
def test_key_to_degrees_badkey():
librosa.key_to_degrees("not a key")
@pytest.mark.parametrize(
"key,ref_degrees",
[
("C:maj", [0, 2, 4, 5, 7, 9, 11]),
("C:min", [0, 2, 3, 5, 7, 8, 10]),
("A:min", [9, 11, 0, 2, 4, 5, 7]),
("Gb:maj", [6, 8, 10, 11, 1, 3, 5]),
("A###:maj", [0, 2, 4, 5, 7, 9, 11]),
("C:ion", [0, 2, 4, 5, 7, 9, 11]),
("C:dor", [0, 2, 3, 5, 7, 9, 10]),
("C:phr", [0, 1, 3, 5, 7, 8, 10]),
("D#:lyd", [3, 5, 7, 9, 10, 0, 2]),
("D#:mix", [3, 5, 7, 8, 10, 0, 1]),
("Ebb:aeol", [2, 4, 5, 7, 9, 10, 0]),
("Ebb:loc", [2, 3, 5, 7, 8, 10, 0]),
],
)
def test_key_to_degrees(key, ref_degrees):
degrees = librosa.key_to_degrees(key)
assert len(degrees) == len(ref_degrees)
for d, rd in zip(degrees, ref_degrees):
assert d == rd
@pytest.mark.xfail(raises=librosa.ParameterError)
def test_mode_to_key_badkey():
librosa.core.notation.__mode_to_key("not a key")
@pytest.mark.parametrize(
"mode, ref_mode",
[("C:maj", "C:maj")],
)
def test_mode_to_key_no_change(mode, ref_mode):
simplified_mode = librosa.core.notation.__mode_to_key(mode)
for n, rn in zip(mode, ref_mode):
assert n == rn
def test_list_thaat():
thaat = librosa.list_thaat()
assert len(thaat) == 10
def test_list_mela():
melas = librosa.list_mela()
assert len(melas) == 72
for k in melas:
assert 1 <= melas[k] <= 72
@pytest.mark.parametrize("thaat", librosa.list_thaat())
def test_thaat_to_degrees(thaat):
degrees = librosa.thaat_to_degrees(thaat)
assert len(degrees) == 7
assert np.all(degrees >= 0) and np.all(degrees < 12)
@pytest.mark.parametrize("mela, idx", librosa.list_mela().items())
def test_mela_to_degrees(mela, idx):
degrees = librosa.mela_to_degrees(mela)
assert np.allclose(degrees, librosa.mela_to_degrees(idx))
assert len(degrees) == 7
assert np.all(degrees >= 0) and np.all(degrees < 12)
if idx < 37:
# check shuddha
assert np.isin(5, degrees)
else:
# check prati
assert np.isin(6, degrees)
# Other checks??
@pytest.mark.parametrize(
"mela, svara",
# This list doesn't cover all 72, but it does cover the edge cases
[
(1, ["S", "R₁", "G₁", "G₂", "G₃", "M₁", "M₂", "P", "D₁", "N₁", "N₂", "N₃"]),
(8, ["S", "R₁", "R₂", "G₂", "G₃", "M₁", "M₂", "P", "D₁", "D₂", "N₂", "N₃"]),
(15, ["S", "R₁", "R₂", "G₂", "G₃", "M₁", "M₂", "P", "D₁", "D₂", "N₂", "N₃"]),
(22, ["S", "R₁", "R₂", "G₂", "G₃", "M₁", "M₂", "P", "D₁", "D₂", "N₂", "N₃"]),
(29, ["S", "R₁", "R₂", "G₂", "G₃", "M₁", "M₂", "P", "D₁", "D₂", "N₂", "N₃"]),
(36, ["S", "R₁", "R₂", "R₃", "G₃", "M₁", "M₂", "P", "D₁", "D₂", "D₃", "N₃"]),
(43, ["S", "R₁", "R₂", "G₂", "G₃", "M₁", "M₂", "P", "D₁", "N₁", "N₂", "N₃"]),
(50, ["S", "R₁", "R₂", "G₂", "G₃", "M₁", "M₂", "P", "D₁", "D₂", "N₂", "N₃"]),
(57, ["S", "R₁", "R₂", "G₂", "G₃", "M₁", "M₂", "P", "D₁", "D₂", "N₂", "N₃"]),
(64, ["S", "R₁", "R₂", "G₂", "G₃", "M₁", "M₂", "P", "D₁", "D₂", "N₂", "N₃"]),
(71, ["S", "R₁", "R₂", "R₃", "G₃", "M₁", "M₂", "P", "D₁", "D₂", "N₂", "N₃"]),
],
)
@pytest.mark.parametrize("abbr", [False, True])
@pytest.mark.parametrize("unicode", [False, True])
def test_mela_to_svara(mela, svara, abbr, unicode):
svara_est = librosa.mela_to_svara(mela, abbr=abbr, unicode=unicode)
for s1, s2 in zip(svara_est, svara):
assert s1[0] == s2[0]
if abbr:
for s in svara_est:
assert len(s) in (1, 2)
else:
for s in svara_est:
assert 0 < len(s) < 5
if sys.version >= "3.7":
if not unicode:
# If we're in non-unicode mode, this shouldn't raise an exception
for s in svara_est:
assert s.isascii()
@pytest.mark.xfail(raises=KeyError)
def test_mela_to_degrees_badmela():
librosa.mela_to_degrees("some garbage")
@pytest.mark.xfail(raises=librosa.ParameterError)
def test_mela_to_degrees_badidx():
librosa.mela_to_degrees(0)
@pytest.mark.xfail(raises=KeyError)
def test_mela_to_svara_badmela():
librosa.mela_to_svara("some garbage")
@pytest.mark.xfail(raises=librosa.ParameterError)
def test_mela_to_svara_badidx():
librosa.mela_to_svara(0)
@pytest.mark.parametrize(
"unison, fifths, unicode, result",
[
("C", 0, True, "C"),
("C", 1, True, "G"),
("C", -2, True, "B♭"),
("C", -2, False, "Bb"),
("F", 1, True, "C"),
("F", -1, True, "B♭"),
("B", -7, True, "B♭"),
("Bb", 7, True, "B"),
("Bb", 14, True, "B♯"),
("B", 1, True, "F♯"),
("B", 14, True, "B𝄪"),
("B", -14, True, "B𝄫"),
("B", 21, True, "B𝄪♯"),
("B", -21, True, "B𝄫♭"),
("B", 21, False, "B###"),
("B", -21, False, "Bbbb"),
],
)
def test_fifths_to_note(unison, fifths, unicode, result):
note = librosa.core.notation.fifths_to_note(
unison=unison, fifths=fifths, unicode=unicode
)
assert note == result
@pytest.mark.xfail(raises=librosa.ParameterError)
def test_fifths_to_note_badunison():
librosa.fifths_to_note(unison="X", fifths=1)
@pytest.mark.xfail(raises=librosa.ParameterError)
def test_interval_to_fjs_irrational():
# Test FJS conversion with a non-just interval
librosa.interval_to_fjs(np.sqrt(2))
@pytest.mark.xfail(raises=librosa.ParameterError)
@pytest.mark.parametrize("r", [0, -1, -1 / 2])
def test_interval_to_fjs_nonpos(r):
librosa.interval_to_fjs(r)
@pytest.mark.parametrize(
"interval, unison, unicode, result",
[
(1, "C", True, "C"),
(2, "G", True, "G"),
(1 / 2, "F#", True, "F♯"),
(1 / 2, "F#", False, "F#"),
(3 / 2, "C", True, "G"),
(5 / 4, "C", True, "E⁵"),
(5 / 4, "C", False, "E^5"),
(8 / 5, "E", True, "C₅"),
(8 / 5, "E", False, "C_5"),
(7 / 5, "F", True, "B⁷₅"),
(7 / 5, "F", False, "B^7_5"),
(49, "C", True, "G⁴⁹"),
(1 / 49, "C", True, "F₄₉"),
],
)
def test_interval_to_fjs(interval, unison, unicode, result):
note = librosa.interval_to_fjs(interval, unison=unison, unicode=unicode)
assert note == result
@pytest.mark.parametrize("unison", ["C", "F#", "Gbb"])
@pytest.mark.parametrize("unicode", [False, True])
@pytest.mark.parametrize(
"intervals", [librosa.plimit_intervals(primes=[3, 5, 7], bins_per_octave=24)]
)
def test_interval_to_fjs_set(unison, unicode, intervals):
fjs = librosa.interval_to_fjs(intervals, unison=unison, unicode=unicode)
for interval, note in zip(intervals, fjs):
fjs_single = librosa.interval_to_fjs(interval, unison=unison, unicode=unicode)
assert fjs_single == note
@pytest.mark.parametrize(
"hz, fmin, unison, unicode, results",
[
([55, 66, 77], None, None, True, ["A", "C₅", "D♯⁷₅"]),
([55, 66, 77], 33, None, True, ["A⁵", "C", "E♭⁷"]),
([55, 66, 77], 33, "Cb", True, ["A♭⁵", "C♭", "E𝄫⁷"]),
([55, 66, 77], 33, "Cb", False, ["Ab^5", "Cb", "Ebb^7"]),
],
)
def test_hz_to_fjs(hz, fmin, unison, unicode, results):
fjs = librosa.hz_to_fjs(hz, fmin=fmin, unison=unison, unicode=unicode)
assert list(fjs) == results
def test_hz_to_fjs_scalar():
fjs = librosa.hz_to_fjs(110, fmin=55, unicode=False)
assert fjs == "A"
|
