def test_mix_small():
s1 = {
'rate': 30,
'left': [1,2,3,4,5,6],
'right': [7,6,5,4,3,2],
}
s2 = {
'rate': 20,
'left': [1,2,3,4,5,6],
'right': [7,6,5,4,3,2],
}
s3 = {
'rate': 30,
'left': [7, 8, 9, 10],
'right': [12, 13, 14, 15],
}
s4 = {
'rate': 30,
'left': [0.7+2.1, 1.4+2.4, 2.1+2.7, 2.8+3.0],
'right': [4.9+3.6, 4.2+3.9, 3.5+4.2, 2.8+4.5]
}
assert lab.mix(s1, s2, 0.5) is None
compare_sounds(lab.mix(s1, s3, 0.7), s4)
def test_mix_real():
inp1 = lab.load_wav(os.path.join(TEST_DIRECTORY, 'sounds', 'chord.wav'))
inp2 = lab.load_wav(os.path.join(TEST_DIRECTORY, 'sounds', 'crash.wav'))
inp3 = copy.deepcopy(inp1)
inp4 = copy.deepcopy(inp2)
res = lab.mix(inp1, inp2, 0.35)
outfile = os.path.join(TEST_DIRECTORY, 'test_outputs', 'chord_crash.wav')
compare_against_file(res, outfile)
assert inp1 == inp3, 'be careful not to modify the input!'
assert inp2 == inp4, 'be careful not to modify the input!'
def test_mix_random_2():
inps, exp = load_pickle_pair('mix_02.pickle')
inps2 = copy.deepcopy(inps)
compare_sounds(lab.mix(*inps), exp)
assert inps == inps2, 'be careful not to modify the inputs!'