def test_octave_validation(self):
trck = Track(1, 'C', 'major', 4, 'octave')
trck.num_voices = 3
with self.assertRaises(ValueError) as error:
trck.octave = 6
self.assertEqual(
'Range too high. Reduce the number of voices, lower the starting octave, '
'or choose a larger interval type.', str(error.exception))
trck.num_voices = 1
trck.octave = 1
trck.octave = 7
with self.assertRaises(ValueError) as error:
trck.octave = 0
self.assertEqual(
'Octave out of range. Select octave in between 1 and 7.',
str(error.exception))
with self.assertRaises(ValueError) as error:
trck.octave = 8
self.assertEqual(
'Octave out of range. Select octave in between 1 and 7.',
str(error.exception))
with self.assertRaises(TypeError) as error:
trck.octave = '1'
self.assertEqual('Octave type error, integer expected.',
str(error.exception))
def test_num_voices_validation(self):
trck = Track(1, 'C', 'major', 5, 'octave')
trck.num_voices = 3
with self.assertRaises(ValueError) as error:
trck.num_voices = 4
self.assertEqual(
'Range too high. Reduce the number of voices, lower the starting octave, '
'or choose a larger interval type.', str(error.exception))
with self.assertRaises(ValueError) as error:
trck.num_voices = 0
self.assertEqual('Number of voices cannot be 0 or less than 0.',
str(error.exception))
with self.assertRaises(ValueError) as error:
trck.num_voices = -1
self.assertEqual('Number of voices cannot be 0 or less than 0.',
str(error.exception))
with self.assertRaises(TypeError) as error:
trck.num_voices = [1]
self.assertEqual('Number of voices type error, integer expected.',
str(error.exception))
def test_interval_type_validation(self):
trck = Track(1, 'C', 'major', 4, 'octave')
trck.interval_type = 'triad'
trck.interval_type = 'fourth'
trck.interval_type = 'fifth'
trck.interval_type = 'maj7'
trck.interval_type = 'all'
with self.assertRaises(ValueError) as error:
trck.interval_type = 'interval type'
self.assertEqual('Invalid interval type.', str(error.exception))
with self.assertRaises(TypeError) as error:
trck.interval_type = 1
self.assertEqual('Interval type type error, string expected.',
str(error.exception))
trck.num_voices = 5
with self.assertRaises(ValueError) as error:
trck.interval_type = 'octave'
self.assertEqual(
'Range too high. Reduce the number of voices, lower the starting octave, '
'or choose a larger interval type.', str(error.exception))