class TestPythagoranScale(unittest.TestCase):
def setUp(self):
self.base_frequency = 528
self.scale = PythagSeries(self.base_frequency)
def test_get_spacing(self):
'''
This harness test is testing features related to Homework 4
'''
space_fractions = {(0, 1): Fraction(9, 8),
(1, 2): Fraction(9, 8),
(2, 3): Fraction(256, 243),
(3, 4): Fraction(9, 8),
(4, 5): Fraction(9, 8),
(5, 6): Fraction(9, 8),
(6, 7): Fraction(256, 243)}
for (l, h) in space_fractions.keys():
self.assertEqual(self.scale.get_spacing(l, h), space_fractions[(l, h)])
# def test_get_modes(self):
# '''
# This harness test is testing features related to Homework 3
# '''
#
# # Theses mode frequencies are values copied from the excel spreadsheet.
# mode_frequencies = {0: [528.00, 594.00, 668.25, 704.00, 792.00, 891.00, 1002.375, 1056.00],
# 1: [594.00, 668.25, 704.00, 792.00, 891.00, 1002.375, 1056.00, 1188.00],
# 2: [668.25, 704.00, 792.00, 891.00, 1002.375, 1056.00, 1188.00, 1336.50],
# 3: [704.00, 792.00, 891.00, 1002.375, 1056.00, 1188.00, 1336.50, 1408.00],
# 4: [792.00, 891.00, 1002.375, 1056.00, 1188.00, 1336.50, 1408.00, 1584.00],
# 5: [891.00, 1002.375, 1056.00, 1188.00, 1336.50, 1408.00, 1584.00, 1782.00],
# 6: [1002.375, 1056.00, 1188.00, 1336.50, 1408.00, 1584.00, 1782.00, 2004.75],
# 7: [1056.00, 1188.00, 1336.50, 1408.00, 1584.00, 1782.00, 2004.75, 2112.00]}
#
# for mode in mode_frequencies.keys():
# base_frequency = mode_frequencies[mode][0]
# ps = get_mode(base_frequency, mode)
#
# tone = 0
# for frequency_expected in mode_frequencies[mode]:
# frequency = ps.get_frequency(tone)
# self.assertAlmostEqual(frequency, frequency_expected,
# msg='Mode: %i, tone: %i. Got %0.3fHz expexted %0.3fHz' % (
# mode, tone, frequency, frequency_expected))
# tone += 1
# def test_get_frequencies(self):
# '''
# This harness test is testing features related to Homework 2
# '''
#
# values = [(-1, 704.),
# (0, 528.),
# (1, 792.),
# (2, 594.),
# (3, 891.),
# (4, 668.25),
# (5, 1002.375),
# (6, 751.78125),
# (7, 563.8359375),
# (8, 845.75390625),
# (9, 634.3154296875),
# (10, 951.47314453125),
# (11, 713.604858398437),
# (12, 535.203643798828)]
#
# for (i, f) in values:
# freq = self.scale.get_frequency(i)
# self.assertAlmostEqual(freq, f, places=11)
def test_frequecies(self):
# base_frequency = 528;
# scale = Pythagorean7ToneScale(base_frequency)
interval_frequencies = [528, 594, 668, 704, 792, 891, 1002]
i = 0
for f in interval_frequencies:
self.assertAlmostEqual(f, self.scale.get_frequency(i), 0)
i += 1
# def test_interval_names(self):
# interval_names = ["1","M2","M3","4","5","M6","M7","1"]
# # scale = Pythagorean7ToneScale()
#
# i = 0
# for name in interval_names:
# self.assertSequenceEqual(self.scale.interval_to_interval_name(i),name)
# i += 1
#
# def test_tone_names(self):
# tone_names = ['C','D','E','F','G','A','B','C']
# scale = Pythagorean7ToneScale()
#
# i = 0
# for name in tone_names:
# self.assertSequenceEqual(scale.interval_to_tone_name(i).strip(' '),name)
# i += 1
def test_get_fraction(self):
fractions = [Fraction(1, 1), Fraction(9, 8), Fraction(81, 64), Fraction(4, 3), Fraction(3, 2), Fraction(27, 16),
Fraction(243, 128), Fraction(2, 1)]
i = 0
for fraction in fractions:
self.assertEqual(self.scale.get_ratio(i), fraction)
i += 1
def test_interval_cents(self):
interval_cents = [0, 204, 408, 498, 702, 906, 1110, 1200]
i = 0
for cents_goal in interval_cents:
cents = self.scale.get_cents(i)
self.assertAlmostEqual(cents_goal, cents, 0)
i += 1