def test_getBeams_offset(self):
'''
Test getting Beams from a Measure that has an anacrusis that makes the
first note not beamed.
'''
m = stream.Measure()
m.repeatAppend(note.Note(type='eighth'), 5)
ts = TimeSignature('2/2')
beams = ts.getBeams(m, measureStartOffset=1.5)
self.assertIsNone(beams[0])
for b in beams[1:]:
self.assertIsNotNone(b)
match = '''[None,
<music21.beam.Beams <music21.beam.Beam 1/start>>,
<music21.beam.Beams <music21.beam.Beam 1/continue>>,
<music21.beam.Beams <music21.beam.Beam 1/continue>>,
<music21.beam.Beams <music21.beam.Beam 1/stop>>]'''
self.assertTrue(common.whitespaceEqual(str(beams), match))
m.append(note.Note(type='eighth'))
beams = ts.getBeams(m, measureStartOffset=1.0)
match = '''[<music21.beam.Beams <music21.beam.Beam 1/start>>,
<music21.beam.Beams <music21.beam.Beam 1/stop>>,
<music21.beam.Beams <music21.beam.Beam 1/start>>,
<music21.beam.Beams <music21.beam.Beam 1/continue>>,
<music21.beam.Beams <music21.beam.Beam 1/continue>>,
<music21.beam.Beams <music21.beam.Beam 1/stop>>]'''
self.assertTrue(common.whitespaceEqual(str(beams), match), str(beams))
m = stream.Measure()
m.repeatAppend(note.Note(type='eighth'), 5)
ts = TimeSignature('3/2')
beams = ts.getBeams(m, measureStartOffset=3.5)
match = '''[None,
<music21.beam.Beams <music21.beam.Beam 1/start>>,
<music21.beam.Beams <music21.beam.Beam 1/continue>>,
<music21.beam.Beams <music21.beam.Beam 1/continue>>,
<music21.beam.Beams <music21.beam.Beam 1/stop>>]'''
self.assertTrue(common.whitespaceEqual(str(beams), match))
m = stream.Measure()
m.repeatAppend(note.Note(type='eighth'), 4)
ts = TimeSignature('6/8')
beams = ts.getBeams(m, measureStartOffset=1.0)
match = '''[None,
<music21.beam.Beams <music21.beam.Beam 1/start>>,
<music21.beam.Beams <music21.beam.Beam 1/continue>>,
<music21.beam.Beams <music21.beam.Beam 1/stop>>]'''
self.assertTrue(common.whitespaceEqual(str(beams), match))
m.append(note.Note(type='eighth'))
beams = ts.getBeams(m, measureStartOffset=0.5)
match = '''[<music21.beam.Beams <music21.beam.Beam 1/start>>,
<music21.beam.Beams <music21.beam.Beam 1/stop>>,
<music21.beam.Beams <music21.beam.Beam 1/start>>,
<music21.beam.Beams <music21.beam.Beam 1/continue>>,
<music21.beam.Beams <music21.beam.Beam 1/stop>>]'''
self.assertTrue(common.whitespaceEqual(str(beams), match), str(beams))
def testMixedDurationsBeams(self):
fourFour = TimeSignature('4/4')
n = note.Note
dList = [
n(type='eighth'),
n(type='quarter'),
n(type='eighth'),
n(type='eighth'),
n(type='quarter'),
n(type='eighth')
]
beamList = fourFour.getBeams(dList)
self.assertEqual(beamList, [None] * 6)
dList = [
n(type='eighth'),
n(type='quarter'),
n(type='eighth'),
n(type='eighth'),
n(type='eighth'),
n(type='quarter')
]
beamList = fourFour.getBeams(dList)
self.assertEqual([repr(b) for b in beamList], [
'None', 'None', 'None',
'<music21.beam.Beams <music21.beam.Beam 1/start>>',
'<music21.beam.Beams <music21.beam.Beam 1/stop>>', 'None'
])
def testGetBeams(self):
ts = TimeSignature('6/8')
durList = [16, 16, 16, 16, 8, 16, 16, 16, 16, 8]
notesList = [note.Note(quarterLength=4 / d) for d in durList]
beams = ts.getBeams(notesList)
match = '''[<music21.beam.Beams <music21.beam.Beam 1/start>/<music21.beam.Beam 2/start>>,
<music21.beam.Beams <music21.beam.Beam 1/continue>/<music21.beam.Beam 2/continue>>,
<music21.beam.Beams <music21.beam.Beam 1/continue>/<music21.beam.Beam 2/continue>>,
<music21.beam.Beams <music21.beam.Beam 1/continue>/<music21.beam.Beam 2/stop>>,
<music21.beam.Beams <music21.beam.Beam 1/stop>>,
<music21.beam.Beams <music21.beam.Beam 1/start>/<music21.beam.Beam 2/start>>,
<music21.beam.Beams <music21.beam.Beam 1/continue>/<music21.beam.Beam 2/continue>>,
<music21.beam.Beams <music21.beam.Beam 1/continue>/<music21.beam.Beam 2/continue>>,
<music21.beam.Beams <music21.beam.Beam 1/continue>/<music21.beam.Beam 2/stop>>,
<music21.beam.Beams <music21.beam.Beam 1/stop>>]'''
self.assertTrue(common.whitespaceEqual(str(beams), match))