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_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 _string_to_progression(string: str) -> List[ChordWithRoot]:
string = string.strip()
if string == "":
return []
progression = []
for name in string.split():
name = name.strip()
if name == REPETITION_SYMBOL:
if not progression:
raise InvalidProgression(
"Can't repeat before at least one chord has been added")
progression.append(progression[-1])
else:
progression.append(ChordWithRoot.from_name(name))
return progression
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_single_progression():
assert ChordProgression.from_string("Cm").progression == [
ChordWithRoot.from_name("Cm")
]
def test_chord_transpose(name_in, name_out, shift):
assert ChordWithRoot.from_name(name_in).transpose(
shift) == ChordWithRoot.from_name(name_out)
def test_chord_repr(name_in):
assert ChordWithRoot.from_name(name_in) == eval(
repr(ChordWithRoot.from_name(name_in)))
def test_chord_note_to_midi(name_in, octave, midi):
assert ChordWithRoot.from_name(name_in, octave).midi() == midi
def test_chord_with_root_invalid_name(name_in):
with pytest.raises(InvalidChord):
assert ChordWithRoot.from_name(name_in)
def test_chord_intervals(name_in, int_out):
assert ChordWithRoot.from_name(name_in).intervals() == int_out
def test_chord_with_root(name_in, root_out, semi_out):
assert ChordWithRoot.from_name(name_in).semitones == semi_out
assert ChordWithRoot.from_name(name_in).root.name == root_out
def test_chord_add_root(name_in, octave):
name_then_root = Chord.from_name(name_in).with_root(Note("A#", octave))
name_and_root = ChordWithRoot.from_name("A#" + name_in, octave=octave)
print(name_and_root._keys())
assert name_then_root == name_and_root