def test_Fader_20():
container = abjad.Container(r"c'4. d'8 e'2")
fader = auxjad.Fader(container)
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4.
d'8
e'2
}
""")
fader = auxjad.Fader(
container,
boundary_depth=1,
)
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
~
c'8
d'8
e'2
}
""")
def test_Fader_19():
random.seed(48915)
container = abjad.Container(r"c'4 d'8 e'8 f'4 ~ f'8. g'16")
fader = auxjad.Fader(container)
assert fader.mask == [1, 1, 1, 1, 1]
fader = auxjad.Fader(
container,
fader_type='in',
)
assert fader.mask == [0, 0, 0, 0, 0]
fader()
assert fader.mask == [0, 0, 0, 0, 0]
fader()
assert fader.mask == [0, 1, 0, 0, 0]
fader()
assert fader.mask == [0, 1, 1, 0, 0]
staff = abjad.Staff(fader.current_window)
assert format(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
r4
d'8
e'8
r2
}
""")
fader.mask = [1, 0, 1, 1, 0]
assert fader.mask == [1, 0, 1, 1, 0]
notes = fader()
staff = abjad.Staff(notes)
abjad.f(staff)
assert format(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
r8
e'8
f'4..
r16
}
""")
fader.reset_mask()
assert fader.mask == [0, 0, 0, 0, 0]
notes = fader()
staff = abjad.Staff(notes)
abjad.f(staff)
assert format(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
R1
}
""")
def test_Fader_07():
random.seed(44126)
container = abjad.Container(r"\times 2/3 {c'8 d'8 e'8} d'2.")
fader = auxjad.Fader(container)
notes = fader.output_all()
staff = abjad.Staff(notes)
assert format(staff) == abjad.String.normalize(r"""
\new Staff
{
\times 2/3 {
\time 4/4
c'8
d'8
e'8
}
d'2.
\times 2/3 {
r8
d'8
e'8
}
d'2.
\times 2/3 {
r8
d'8
r8
}
d'2.
r4
d'2.
R1
}
""")
def test_Fader_05():
random.seed(98738)
container = abjad.Container(r"c'4. d'8 e'2")
fader = auxjad.Fader(
container,
mode='in',
)
notes = fader.output_all()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
R1
r4.
d'8
r2
c'4.
d'8
r2
c'4.
d'8
e'2
}
""")
def test_Fader_11():
random.seed(18711)
container = abjad.Container(r"c'8 d'8 e'2.")
fader = auxjad.Fader(
container,
disable_rewrite_meter=True,
use_multimeasure_rests=False,
)
notes = fader.output_all()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'8
d'8
e'2.
c'8
r8
e'2.
r8
r8
e'2.
r8
r8
r2.
}
""")
def test_Fader_34():
random.seed(53234)
container = abjad.Container(r"\time 4/4 c'2( d'2 \time 3/4 e'2.)")
fader = auxjad.Fader(container, mode='in')
notes = fader.output_all()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
R1
\time 3/4
R1 * 3/4
\time 4/4
c'2
r2
)
\time 3/4
R1 * 3/4
\time 4/4
c'2
(
d'2
)
\time 3/4
R1 * 3/4
\time 4/4
c'2
(
d'2
\time 3/4
e'2.
)
}
""")
def test_Fader_33():
random.seed(85909)
container = abjad.Container(r"c'4. d'8 e'4.. f'16")
fader = auxjad.Fader(
container,
repetition_chance=0.5,
)
notes = fader.output_n(5)
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4.
d'8
e'4..
f'16
c'4.
d'8
e'4..
r16
c'4.
d'8
e'4..
r16
c'4.
d'8
r2
c'4.
d'8
r2
}
""")
def test_Fader_12():
random.seed(87123)
container = abjad.Container(r"\time 2/4 c'4 d'4 \time 3/4 e'4 f'4 g'4")
fader = auxjad.Fader(
container,
omit_time_signatures=True,
)
notes = fader.output_n(3)
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
c'4
d'4
e'4
f'4
g'4
c'4
d'4
e'4
f'4
r4
c'4
d'4
e'4
r2
}
""")
def test_Fader_30():
random.seed(39761)
container = abjad.Container([
auxjad.ArtificialHarmonic(r"<c' f'>2"),
abjad.Chord(r"<c' f'>2"),
])
fader = auxjad.Fader(container, mode='out')
staff = abjad.Staff(fader.output_all())
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
<
c'
\tweak style #'harmonic
f'
>2
<c' f'>2
<
c'
\tweak style #'harmonic
f'
>2
f'2
<
c'
\tweak style #'harmonic
f'
>2
r2
R1
}
""")
def test_Fader_02():
random.seed(98752)
container = abjad.Container(r"c'4 d'4 e'4 f'4")
fader = auxjad.Fader(container)
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
d'4
e'4
f'4
}
""")
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
r4
e'4
f'4
}
""")
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
r2
e'4
f'4
}
""")
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
r2.
f'4
}
""")
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
R1
}
""")
with pytest.raises(RuntimeError):
notes = fader() # noqa: F841
def test_Fader_22():
random.seed(92114)
container = abjad.Container(r"c'8 d'8 e'8 f'8 g'8 a'8 b'8 c''8")
fader = auxjad.Fader(container)
fader.random_mask()
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
r8
d'8
r4
g'8
a'8
r4
}
""")
fader.random_mask()
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
r8
d'8
r4
g'8
a'8
b'8
r8
}
""")
def test_Fader_08():
random.seed(88111)
container = abjad.Container(r"c'4. d'8 e'16 f'16 g'4.")
fader = auxjad.Fader(container)
notes = fader.output_n(3)
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4.
d'8
e'16
f'16
g'4.
c'4.
r8
e'16
f'16
g'4.
c'4.
r8
e'16
f'16
r4.
}
""")
def test_Fader_09():
random.seed(14812)
container = abjad.Container(r"\time 3/8 c'4. \time 2/4 d'2 \time 3/8 e'4.")
fader = auxjad.Fader(container)
notes = fader.output_n(3)
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 3/8
c'4.
\time 2/4
d'2
\time 3/8
e'4.
c'4.
\time 2/4
R1 * 1/2
\time 3/8
e'4.
c'4.
\time 2/4
R1 * 1/2
\time 3/8
R1 * 3/8
}
""")
def test_Fader_18():
random.seed(66501)
container = abjad.Container(r"c'4 d'4 e'4 f'4")
fader = auxjad.Fader(container)
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
d'4
e'4
f'4
}
""")
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
r4
d'4
e'4
f'4
}
""")
fader.contents = abjad.Container(r"c'16 d'16 e'16 f'16 g'2.")
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'16
d'16
e'16
f'16
g'2.
}
""")
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'16
d'16
r16
f'16
g'2.
}
""")
def test_Fader_24():
random.seed(83012)
container = abjad.Container(r"c'4 d'4 e'4 f'4")
fader = auxjad.Fader(container)
staff = abjad.Staff()
for window in fader:
staff.append(window)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
d'4
e'4
f'4
\time 4/4
c'4
r4
e'4
f'4
\time 4/4
c'4
r4
e'4
r4
\time 4/4
c'4
r2.
\time 4/4
R1
}
""")
auxjad.mutate.remove_repeated_time_signatures(staff[:])
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
d'4
e'4
f'4
c'4
r4
e'4
f'4
c'4
r4
e'4
r4
c'4
r2.
R1
}
""")
def test_Fader_28():
random.seed(17613)
container = abjad.Container(
r"<c' e'>4 ~ <c' e'>16 d'8. <gs e'>8 <bf f' a'>8 ~ <bf f' a'>4")
fader = auxjad.Fader(container)
staff = abjad.Staff(fader.output_all())
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
<c' e'>4
~
<c' e'>16
d'8.
<gs e'>8
<bf f' a'>4.
<c' e'>4
~
<c' e'>16
d'8.
gs8
<bf f' a'>4.
<c' e'>4
~
<c' e'>16
d'8.
gs8
<bf a'>4.
c'4
~
c'16
d'8.
gs8
<bf a'>4.
r4
r16
d'8.
gs8
<bf a'>4.
r4
r16
d'8.
gs8
bf4.
r2
gs8
bf4.
r2
r8
bf4.
R1
}
""")
def test_Fader_29():
container = abjad.Container(r"c'2 <d' e' f' g'>2")
fader = auxjad.Fader(container, mask=[1, 0, 1, 1, 0])
staff = abjad.Staff(fader())
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'2
<e' f'>2
}
""")
def test_Fader_03():
container = abjad.Container(r"c'4 d'2 e'4 f'2 ~ f'8 g'4.")
fader = auxjad.Fader(
container,
mode='in',
max_steps=2,
repetition_chance=0.7,
disable_rewrite_meter=True,
omit_time_signatures=True,
use_multimeasure_rests=False,
mask=[1, 0, 1, 1, 0],
boundary_depth=0,
maximum_dot_count=1,
rewrite_tuplets=False,
process_on_first_call=True,
include_empty_measures=False,
)
assert fader.mode == 'in'
assert fader.max_steps == 2
assert fader.repetition_chance == 0.7
assert fader.disable_rewrite_meter
assert fader.omit_time_signatures
assert not fader.use_multimeasure_rests
assert fader.mask == [1, 0, 1, 1, 0]
assert fader.boundary_depth == 0
assert fader.maximum_dot_count == 1
assert not fader.rewrite_tuplets
assert fader.process_on_first_call
assert not fader.include_empty_measures
fader.mode = 'out'
fader.max_steps = 1
fader.repetition_chance = 0.23
fader.disable_rewrite_meter = False
fader.omit_time_signatures = False
fader.use_multimeasure_rests = True
fader.mask = [0, 1, 1, 0, 1]
fader.boundary_depth = 1
fader.maximum_dot_count = 2
fader.rewrite_tuplets = True
fader.process_on_first_call = False
fader.include_empty_measures = True
assert fader.mode == 'out'
assert fader.max_steps == 1
assert fader.repetition_chance == 0.23
assert not fader.disable_rewrite_meter
assert not fader.omit_time_signatures
assert fader.use_multimeasure_rests
assert fader.mask == [0, 1, 1, 0, 1]
assert fader.boundary_depth == 1
assert fader.maximum_dot_count == 2
assert fader.rewrite_tuplets
assert not fader.process_on_first_call
assert fader.include_empty_measures
def test_Fader_14():
random.seed(19941)
container = abjad.Container(r"c'4 d'4 e'4 f'4")
fader = auxjad.Fader(container, mode='in', mask=[0, 1, 1, 0])
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
r4
d'4
e'4
r4
}
""")
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
d'4
e'4
r4
}
""")
fader.reset_mask()
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
R1
}
""")
fader.mode = 'out'
fader.reset_mask()
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
d'4
e'4
f'4
}
""")
def test_Fader_26():
container = abjad.Container(r"c'4 d'4 e'4 f'4")
fader = auxjad.Fader(container)
assert isinstance(fader(), abjad.Selection)
tuplet = abjad.Tuplet('3:2', r"c'2 d'2 e'2")
fader = auxjad.Fader(tuplet)
assert isinstance(fader(), abjad.Selection)
voice = abjad.Voice(r"c'4 d'4 e'4 f'4")
fader = auxjad.Fader(voice)
assert isinstance(fader(), abjad.Selection)
staff = abjad.Staff(r"c'4 d'4 e'4 f'4")
fader = auxjad.Fader(staff)
assert isinstance(fader(), abjad.Selection)
score = abjad.Score([abjad.Staff(r"c'4 d'4 e'4 f'4")])
fader = auxjad.Fader(score)
assert isinstance(fader(), abjad.Selection)
voice = abjad.Voice(r"c'4 d'4 e'4 f'4")
staff = abjad.Staff([voice])
fader = auxjad.Fader(staff)
assert isinstance(fader(), abjad.Selection)
staff = abjad.Staff(r"c'4 d'4 e'4 f'4")
score = abjad.Score([staff])
fader = auxjad.Fader(score)
assert isinstance(fader(), abjad.Selection)
voice1 = abjad.Voice(r"c'4 d'4 e'4 f'4")
voice2 = abjad.Voice(r"g2 f2")
staff = abjad.Staff([voice1, voice2], simultaneous=True)
with pytest.raises(ValueError):
fader = auxjad.Fader(staff) # noqa: F841
staff1 = abjad.Staff(r"c'4 d'4 e'4 f'4")
staff2 = abjad.Staff(r"g2 f2")
score = abjad.Score([staff1, staff2])
with pytest.raises(ValueError):
fader = auxjad.Fader(score) # noqa: F841
def test_Fader_13():
random.seed(47103)
container = abjad.Container(r"c'4 d'4 e'4 f'4")
fader = auxjad.Fader(
container,
process_on_first_call=True,
)
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
d'4
e'4
r4
}
""")
def test_Fader_15():
random.seed(71324)
container = abjad.Container(
r"\time 3/4 c'8->\f d'8\p ~ d'4 e'8..-- f'32-.")
fader = auxjad.Fader(container)
notes = fader.output_all()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 3/4
c'8
\f
- \accent
d'4.
\p
e'8..
- \tenuto
f'32
- \staccato
c'8
\f
- \accent
d'4.
\p
r8..
f'32
- \staccato
c'8
\f
- \accent
d'4.
\p
r4
c'8
\f
- \accent
r8
r2
R1 * 3/4
}
""")
def test_Fader_23():
random.seed(36017)
container = abjad.Container(r"c'8 d'8 e'8 f'8 g'8 a'8 b'8 c''8")
fader = auxjad.Fader(
container,
mask=[0, 0, 1, 1, 1, 1, 1, 1],
)
fader.shuffle_mask()
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
r8
d'8
e'8
f'8
g'8
a'8
b'8
r8
}
""")
fader.shuffle_mask()
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'8
d'8
e'8
r8
g'8
r8
b'8
c''8
}
""")
def test_Fader_25():
random.seed(19873)
container = abjad.Container(r"c'4 d'4 e'4 f'4")
fader = auxjad.Fader(container, max_steps=3)
staff = abjad.Staff()
for window in fader:
staff.append(window)
auxjad.mutate(staff[:]).remove_repeated_time_signatures()
assert format(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
d'4
e'4
f'4
c'4
r2.
R1
}
""")
def test_Fader_04():
random.seed(19962)
container = abjad.Container(r"c'4. d'8 e'2")
fader = auxjad.Fader(container)
notes = fader.output_all()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4.
d'8
e'2
r4.
d'8
e'2
r2
e'2
R1
}
""")
def test_Fader_10():
random.seed(29862)
container = abjad.Container(r"c'8 d'8 e'8 f'8 g'8 a'8 b'8 c''8")
fader = auxjad.Fader(
container,
max_steps=3,
process_on_first_call=True,
)
notes = fader.output_n(3)
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'8
d'8
r8
f'8
g'8
a'8
b'8
c''8
r4.
f'8
g'8
a'8
b'8
c''8
r4.
f'8
r8
a'8
b'8
r8
}
""")
def test_Fader_17():
container = abjad.Container(r"c'4 d'4 e'4 f'4")
fader = auxjad.Fader(container)
assert len(fader) == 4
container = abjad.Container(r"c'4 ~ c'8 d'8 e'4 ~ e'8 f'8")
fader = auxjad.Fader(container)
assert len(fader) == 4
container = abjad.Container(r"c'4 ~ c'16 r16 d'8 e'4 ~ e'8 f'16 r16")
fader = auxjad.Fader(container)
assert len(fader) == 4
container = abjad.Container(r"<c' e' g'>2 <d' f'>2")
fader = auxjad.Fader(container)
assert len(fader) == 5
container = abjad.Container(r"<c' e' g'>4 ~ <c' e' g'>16 r8. <d' f'>2")
fader = auxjad.Fader(container)
assert len(fader) == 5
container = abjad.Container(r"<c' e' g'>4 d'4 <e' g' b'>4 r4")
fader = auxjad.Fader(container)
assert len(fader) == 7
def test_Fader_01():
random.seed(13987)
container = abjad.Container(r"c'4 ~ c'16 d'8. e'8 f'4.")
fader = auxjad.Fader(container)
assert abjad.lilypond(fader) == abjad.String.normalize(r"""
{
%%% \time 4/4 %%%
c'4
~
c'16
d'8.
e'8
f'4.
}
""")
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
~
c'16
d'8.
e'8
f'4.
}
""")
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
~
c'16
r8.
e'8
f'4.
}
""")
notes = fader()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
r2
e'8
f'4.
}
""")
notes = fader.current_window
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
r2
e'8
f'4.
}
""")
def test_Fader_32():
random.seed(76132)
container = abjad.Container(r"c'4 d'4 e'2")
fader = auxjad.Fader(
container,
mode='in',
process_on_first_call=False,
include_empty_measures=True,
)
staff = abjad.Staff(fader.output_all())
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
R1
c'4
r2.
c'4
d'4
r2
c'4
d'4
e'2
}
""")
random.seed(76132)
container = abjad.Container(r"c'4 d'4 e'2")
fader = auxjad.Fader(
container,
mode='in',
process_on_first_call=True,
include_empty_measures=True,
)
staff = abjad.Staff(fader.output_all())
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
r2.
c'4
d'4
r2
c'4
d'4
e'2
}
""")
random.seed(76132)
container = abjad.Container(r"c'4 d'4 e'2")
fader = auxjad.Fader(
container,
mode='in',
process_on_first_call=False,
include_empty_measures=False,
)
staff = abjad.Staff(fader.output_all())
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
r2.
c'4
d'4
r2
c'4
d'4
e'2
}
""")
random.seed(76132)
container = abjad.Container(r"c'4 d'4 e'2")
fader = auxjad.Fader(
container,
mode='in',
process_on_first_call=True,
include_empty_measures=False,
)
staff = abjad.Staff(fader.output_all())
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
r2.
c'4
d'4
r2
c'4
d'4
e'2
}
""")
def test_Fader_06():
random.seed(13241)
container = abjad.Container(r"c'4 d'4 e'4 f'4")
fader = auxjad.Fader(container)
notes = fader.__next__()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
d'4
e'4
f'4
}
""")
notes = fader.__next__()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
d'4
r4
f'4
}
""")
notes = fader.__next__()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
d'4
r2
}
""")
fader.mode = 'in'
notes = fader.__next__()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
d'4
r4
f'4
}
""")
notes = fader.__next__()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
c'4
d'4
e'4
f'4
}
""")
fader.mask = [0, 0, 1, 1]
notes = fader.__next__()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
r2
e'4
f'4
}
""")
notes = fader.__next__()
staff = abjad.Staff(notes)
assert abjad.lilypond(staff) == abjad.String.normalize(r"""
\new Staff
{
\time 4/4
r4
d'4
e'4
f'4
}
""")
