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# Solfege - free ear training software
# Copyright (C) 2007, 2008 Tom Cato Amundsen
# License is GPL, see file COPYING
import unittest
from mpd.interval import Interval
from mpd.musicalpitch import MusicalPitch
class TestInterval(unittest.TestCase):
def test_constructor(self):
for s, a, b, c, i, steps in (
('p1', 0, 0, 0, 0, 1),
('d1', 0, 0, -1, -1, 1),
('a1', 0, 0, 1, 1, 1),
('p4', 3, 0, 0, 5, 4),
('p5', 4, 0, 0, 7, 5),
('p8', 0, 1, 0, 12, 8),
('d8', 0, 1, -1, 11, 8),
('a8', 0, 1, 1, 13, 8),
('p11', 3, 1, 0, 17, 11), # octave + fourth
('p12', 4, 1, 0, 19, 12), # octave + fifth
('p15', 0, 2, 0, 24, 15), # 2*octave
('d15', 0, 2, -1, 23, 15), # 2*octave
('a15', 0, 2, 1, 25, 15), # 2*octave
('m2', 1, 0, -1, 1, 2),
('M2', 1, 0, 0, 2, 2),
('M3', 2, 0, 0, 4, 3),
('M6', 5, 0, 0, 9, 6),
('M9', 1, 1, 0, 14, 9),
('m10', 2, 1, -1, 15, 10), # decim
('M13', 5, 1, 0, 21, 13), # octave + sixth
('m14', 6, 1, -1, 22, 14), # octave + seventh
('M16', 1, 2, 0, 26, 16), # 2*octave + second
):
n = Interval(s)
self.assertEquals((n.m_interval, n.m_octave, n.m_mod), (a, b, c))
self.assertEquals(repr(n), s)
self.assertEquals(i, n.get_intvalue())
self.assertEquals(steps, n.steps())
def test_addition(self):
a = MusicalPitch.new_from_notename("c'")
b = Interval("m2")
self.assertEquals((a+b).get_octave_notename(), "des'")
def test_add_d5(self):
a = MusicalPitch.new_from_notename("b")
b = Interval("-d5")
self.assertEquals((a+b).get_octave_notename(), "eis")
a = MusicalPitch.new_from_notename("bis")
b = Interval("-d5")
self.assertEquals((a+b).get_octave_notename(), "eisis")
a = MusicalPitch.new_from_notename("bisis")
b = Interval("-d5")
self.assertEquals((a+b).get_octave_notename(), "fisis")
def test_new_from_int(self):
for x in range(-12, 12):
i = Interval.new_from_int(x)
a = MusicalPitch.new_from_notename("bisis")
b = a + i
self.assertEquals(int(a) + x, int(b))
suite = unittest.makeSuite(TestInterval)
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