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#! /usr/bin/env python
# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from aubio import note2midi, freq2note, note2freq, float_type
from numpy.testing import TestCase
from _tools import parametrize, assert_raises, skipTest
list_of_known_notes = (
( 'C-1', 0 ),
( 'C#-1', 1 ),
( 'd2', 38 ),
( 'C3', 48 ),
( 'B3', 59 ),
( 'B#3', 60 ),
( 'C♯4', 61 ),
( 'A4', 69 ),
( 'A#4', 70 ),
( 'A♯4', 70 ),
( 'A\u266f4', 70 ),
( 'Bb4', 70 ),
( 'B♭4', 70 ),
( 'B\u266d4', 70 ),
( 'G8', 115 ),
( 'G♯8', 116 ),
( 'G9', 127 ),
( 'A♮2', 45 ),
)
list_of_known_notes_with_unicode_issues = (
('C𝄪4', 62 ),
('E𝄫4', 62 ),
)
list_of_unknown_notes = (
( 'G\udd2a2' ),
( 'B\ufffd2' ),
( 'B\u266e\u266e2' ),
( 'B\u266f\u266d3' ),
( 'B33' ),
( 'C.3' ),
( 'A' ),
( '2' ),
)
class Test_note2midi_good_values(object):
@parametrize('note, midi', list_of_known_notes)
def test_note2midi_known_values(self, note, midi):
" known values are correctly converted "
assert note2midi(note) == midi
@parametrize('note, midi', list_of_known_notes_with_unicode_issues)
def test_note2midi_known_values_with_unicode_issues(self, note, midi):
" difficult values are correctly converted unless expected failure "
try:
assert note2midi(note) == midi
except UnicodeEncodeError as e:
# platforms with decoding failures include:
# - osx: python <= 2.7.10
# - win: python <= 2.7.12
import sys
strmsg = "len(u'\\U0001D12A') != 1, expected decoding failure"
strmsg += " | upgrade to Python 3 to fix"
strmsg += " | {:s} | {:s} {:s}"
if len('\U0001D12A') != 1 and sys.version[0] == '2':
skipTest(strmsg.format(repr(e), sys.platform, sys.version))
else:
raise
class note2midi_wrong_values(TestCase):
def test_note2midi_missing_octave(self):
" fails when passed only one character"
self.assertRaises(ValueError, note2midi, 'C')
def test_note2midi_wrong_modifier(self):
" fails when passed a note with an invalid modifier "
self.assertRaises(ValueError, note2midi, 'C.1')
def test_note2midi_another_wrong_modifier_again(self):
" fails when passed a note with a invalid note name "
self.assertRaises(ValueError, note2midi, 'CB-3')
def test_note2midi_wrong_octave(self):
" fails when passed a wrong octave number "
self.assertRaises(ValueError, note2midi, 'CBc')
def test_note2midi_out_of_range(self):
" fails when passed a note out of range"
self.assertRaises(ValueError, note2midi, 'A9')
def test_note2midi_wrong_note_name(self):
" fails when passed a note with a wrong name"
self.assertRaises(ValueError, note2midi, 'W9')
def test_note2midi_low_octave(self):
" fails when passed a note with a too low octave"
self.assertRaises(ValueError, note2midi, 'C-9')
def test_note2midi_wrong_data_type(self):
" fails when passed a non-string value "
self.assertRaises(TypeError, note2midi, 123)
def test_note2midi_wrong_data_too_long(self):
" fails when passed a note with a note name longer than expected"
self.assertRaises(ValueError, note2midi, 'CB+-3')
class Test_note2midi_unknown_values(object):
@parametrize('note', list_of_unknown_notes)
def test_note2midi_unknown_values(self, note):
" unknown values throw out an error "
assert_raises(ValueError, note2midi, note)
class freq2note_simple_test(TestCase):
def test_freq2note_above(self):
" make sure freq2note(441) == A4 "
self.assertEqual("A4", freq2note(441))
def test_freq2note_under(self):
" make sure freq2note(439) == A4 "
self.assertEqual("A4", freq2note(439))
class note2freq_simple_test(TestCase):
def test_note2freq(self):
" make sure note2freq('A3') == 220"
self.assertEqual(220, note2freq("A3"))
def test_note2freq_under(self):
" make sure note2freq(A4) == 440"
if float_type == 'float32':
self.assertEqual(440, note2freq("A4"))
else:
self.assertLess(abs(note2freq("A4")-440), 1.e-12)
if __name__ == '__main__':
from _tools import run_module_suite
run_module_suite()
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