def test_github_issue_8_sloppy_midi():
prog = ChordProgression.from_midi_file(
os.path.join(os.path.dirname(__file__), "test_data", "issue_8.mid"))
assert prog == ChordProgression([
Chord(
name="A#min",
root=Note("A#", 3),
intervals=Intervals(name="min", semitones=[0, 3, 7]),
),
Chord(
name="D#",
root=Note("D#", 4),
intervals=Intervals(name="", semitones=[0, 4, 7]),
),
Chord(
name="D#min",
root=Note("D#", 4),
intervals=Intervals(name="min", semitones=[0, 3, 7]),
),
Chord(
name="A#min/G#",
root=Note("G#", 3),
intervals=Intervals(name="min/b7", semitones=[0, 5, 9, 14]),
),
])
def test_github_issue_61_slash_chord_with_octave():
"""https://github.com/jonathangjertsen/jchord/issues/61#issuecomment-777625321"""
chord = Chord.from_name("5C/E")
assert chord == Chord(
name="C/E",
root=Note("C", 5),
intervals=Intervals(name="major", semitones=[-8, 0, 4, 7]),
)
assert chord.bass == Note("E", 4)
def test_github_issue_61_progression():
"""https://github.com/jonathangjertsen/jchord/issues/61#issuecomment-777575298"""
prog = ChordProgression.from_string("4F -- 3Am -- 4Dm7 -- 4F --")
assert prog == ChordProgression([
Chord(
name="F",
root=Note("F", 4),
intervals=Intervals(name="major", semitones=[0, 4, 7]),
),
Chord(
name="F",
root=Note("F", 4),
intervals=Intervals(name="major", semitones=[0, 4, 7]),
),
Chord(
name="Am",
root=Note("A", 3),
intervals=Intervals(name="m", semitones=[0, 3, 7]),
),
Chord(
name="Am",
root=Note("A", 3),
intervals=Intervals(name="m", semitones=[0, 3, 7]),
),
Chord(
name="Dm7",
root=Note("D", 4),
intervals=Intervals(name="m7", semitones=[0, 3, 7, 10]),
),
Chord(
name="Dm7",
root=Note("D", 4),
intervals=Intervals(name="m7", semitones=[0, 3, 7, 10]),
),
Chord(
name="F",
root=Note("F", 4),
intervals=Intervals(name="major", semitones=[0, 4, 7]),
),
Chord(
name="F",
root=Note("F", 4),
intervals=Intervals(name="major", semitones=[0, 4, 7]),
),
])
def test_chord_from_degrees(deg_in, semi_out):
assert Intervals.from_degrees(deg_in).semitones == semi_out
def test_semitones_to_chord_options(semitones, options, selected):
computed_options = semitones_to_name_options(semitones)
assert set(computed_options) >= set(options)
assert Intervals.from_semitones(semitones).name == selected
def test_chord_from_invalid_name(name_in):
with pytest.raises(InvalidChord):
Intervals.from_name(name_in)
def test_chord_add_root(name_in, octave):
name_then_root = Intervals.from_name(name_in).with_root(Note("A#", octave))
name_and_root = Chord.from_name(f"{octave}A#{name_in}")
assert name_then_root == name_and_root
def test_chord_repr(name_in, repr_out):
assert repr(Intervals.from_name(name_in)) == repr_out
assert Intervals.from_name(name_in) == eval(repr_out)
def test_chord_from_name_intervals(name_in, int_out):
assert Intervals.from_name(name_in).interval_sequence() == int_out
def test_chord_from_semitones(semi_in, semi_out):
assert Intervals.from_semitones(semi_in).semitones == semi_out
def test_chord_name_roundtrip(name_in, name_out):
assert (
Intervals.from_semitones(Intervals.from_name(name_in).semitones).name
== name_out
)
def test_chord_from_name_modifications(name_in, modifications):
assert Intervals.from_name(name_in).modifications == modifications