def test_progression_to_midi():
midi_filename = os.path.join(os.path.dirname(__file__), "test_data",
"test_progression.midi")
try:
ChordProgression.from_string(
"""C Fm C G7 C E7 Am G G G G G""").to_midi(midi_filename)
finally:
os.remove(midi_filename)
def test_song_to_string():
intro = SongSection("Intro", ChordProgression.from_string("""C Fm G7"""))
main = SongSection("Main",
ChordProgression.from_string("""C Fm C G7 C E7 Am G"""))
song = Song([intro, main, main])
assert (song.to_string() == """Intro
=====
C Fm G7
Main (x2)
=========
C Fm C G7
C E7 Am G
""")
def test_longer_progression():
assert ChordProgression.from_string("C Fm C G7").progression == [
ChordWithRoot.from_name("C"),
ChordWithRoot.from_name("Fm"),
ChordWithRoot.from_name("C"),
ChordWithRoot.from_name("G7"),
]
def test_repetition():
assert ChordProgression.from_string("C -- Fm G7").progression == [
ChordWithRoot.from_name("C"),
ChordWithRoot.from_name("C"),
ChordWithRoot.from_name("Fm"),
ChordWithRoot.from_name("G7"),
]
def test_explicit_octave():
assert ChordProgression.from_string("4C -- +3Fm -2G7").progression == [
Chord.from_name("+4C"),
Chord.from_name("4C"),
Chord.from_name("3Fm"),
Chord.from_name("-2G7"),
]
def test_progression_from_midi():
midi_filename = os.path.join(os.path.dirname(__file__), "test_data",
"test_progression.midi")
original = ChordProgression.from_string("""C Fm C G7 C E7 Am G G G G G""")
try:
original.to_midi(midi_filename)
assert ChordProgression.from_midi_file(midi_filename) == original
finally:
os.remove(midi_filename)
def test_to_txt():
txt_filename_in = os.path.join(os.path.dirname(__file__), "test_data",
"test_progression.txt")
txt_filename_out = os.path.join(os.path.dirname(__file__), "test_data",
"test_progression_exported.txt")
prog = ChordProgression.from_string("""C Fm C G7 C E7 Am G G G G G""")
try:
prog.to_txt(txt_filename_out)
assert ChordProgression.from_txt(txt_filename_in) == prog
finally:
os.remove(txt_filename_out)
def test_multiline():
assert (ChordProgression.from_string("""C Fm C G7
C E7 Am G""").progression == [
ChordWithRoot.from_name("C"),
ChordWithRoot.from_name("Fm"),
ChordWithRoot.from_name("C"),
ChordWithRoot.from_name("G7"),
ChordWithRoot.from_name("C"),
ChordWithRoot.from_name("E7"),
ChordWithRoot.from_name("Am"),
ChordWithRoot.from_name("G"),
])
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_progression_midi():
assert ChordProgression.from_string("""C Fm G7""").midi() == [
[
note_to_midi(("C", 4)),
note_to_midi(("E", 4)),
note_to_midi(("G", 4))
],
[
note_to_midi(("F", 4)),
note_to_midi(("G#", 4)),
note_to_midi(("C", 5))
],
[
note_to_midi(("G", 4)),
note_to_midi(("B", 4)),
note_to_midi(("D", 5)),
note_to_midi(("F", 5)),
],
]
def test_song_repr():
intro = SongSection("Intro", ChordProgression.from_string("""C Fm G7"""))
main = SongSection("Main",
ChordProgression.from_string("""C Fm C G7 C E7 Am G"""))
song = Song([intro, main, main])
assert song == eval(repr(song))
def test_from_txt():
txt_filename_in = os.path.join(os.path.dirname(__file__), "test_data",
"test_progression.txt")
assert ChordProgression.from_txt(
txt_filename_in) == ChordProgression.from_string(
"""C Fm C G7 C E7 Am G G G G G""")
def test_whitespace():
assert ChordProgression.from_string(
"C -- Fm G7") == ChordProgression.from_string(" C -- Fm G7 ")
def test_repeat_nothing():
with pytest.raises(InvalidProgression):
assert ChordProgression.from_string("-- C Fm")
def test_longer_chords():
assert ChordProgression.from_string("C Fm C G7").chords() == {
ChordWithRoot.from_name("C"),
ChordWithRoot.from_name("Fm"),
ChordWithRoot.from_name("G7"),
}
def test_single_chords():
assert ChordProgression.from_string("Cm").chords() == {
ChordWithRoot.from_name("Cm")
}
def test_empty_chords():
assert ChordProgression.from_string("").chords() == set()
from jchord.progressions import ChordProgression
ChordProgression.from_string(
"Bmaj7 -- D7 -- Gmaj7 -- Bb7 -- -- -- Am7 D7").to_midi("example.midi",
tempo=100,
beats_per_chord=2,
instrument=4)
from jchord.progressions import ChordProgression, MidiConversionSettings
from jchord.midi import Instrument
from jchord.midi_effects import Harmonizer
progression = ChordProgression.from_string("""Fn Gn En An""")
progression.to_midi(
MidiConversionSettings(
filename="harmonizer.midi",
tempo=85,
beats_per_chord=2,
instrument=Instrument.VoiceOohs,
effect=Harmonizer(scale=[0, 2, 4, 5, 7, 9, 11],
degrees=[1, 3, 5, 7],
root="C"),
))
# fmt: off
from jchord.progressions import ChordProgression, MidiConversionSettings
from jchord.midi import Instrument
from jchord.midi_effects import (
Chain,
Doubler,
Arpeggiator,
Spreader,
Transposer,
)
progression = ChordProgression.from_string("""
Dm -- G -- C Cadd9 Fmaj7 --
Dm -- E -- Am -- Am9 --
Dm7 -- G7 -- C C7 Fmaj7 Fmaj7add6
Dm9 -- E7 -- Am -- Amadd6 --
Esus4 E7 Am --
Dm7 -- G -- Cmaj9 Cmaj9/G Fmaj7 --
Dm -- E -- Amadd9 Am/G Am/F# Fmaj7
E7b9 -- Amadd6add9 -- -- -- Am --
""")
progression.to_midi(
MidiConversionSettings(
filename="autumn_leaves_arpeggiated.midi",
tempo=110,
beats_per_chord=2,
instrument=Instrument.VoiceOohs,
effect=Chain(
Doubler(12),
Arpeggiator(
rate=1 / 16,
def test_empty_progression():
assert ChordProgression.from_string("").progression == []
def test_single_progression():
assert ChordProgression.from_string("Cm").progression == [
ChordWithRoot.from_name("Cm")
]