ref: 5de7f98fb882a76a2a2751c09a34e1b10d224a4e
dir: /python/tests/test_fvec.py/
#! /usr/bin/env python
from numpy.testing import TestCase, run_module_suite
from numpy.testing import assert_equal, assert_almost_equal
from aubio import fvec, zero_crossing_rate, alpha_norm, min_removal
from aubio import float_type
from numpy import array, shape
wrong_type = 'float32' if float_type == 'float64' else 'float64'
default_size = 512
class aubio_fvec_test_case(TestCase):
def test_vector_created_with_zeroes(self):
a = fvec(10)
assert a.dtype == float_type
assert a.shape == (10,)
assert_equal (a, 0)
def test_vector_create_with_list(self):
a = fvec([0,1,2,3])
assert a.dtype == float_type
assert a.shape == (4,)
assert_equal (list(range(4)), a)
def test_vector_assign_element(self):
a = fvec(default_size)
a[0] = 1
assert_equal(a[0], 1)
def test_vector_assign_element_end(self):
a = fvec(default_size)
a[-1] = 1
assert_equal(a[-1], 1)
assert_equal(a[len(a)-1], 1)
def test_vector(self):
a = fvec()
a, len(a) #a.length
a[0]
array(a)
a = fvec(10)
a = fvec(1)
a.T
array(a).T
a = list(range(len(a)))
def test_wrong_values(self):
self.assertRaises (ValueError, fvec, -10)
a = fvec(2)
self.assertRaises (IndexError, a.__getitem__, 3)
self.assertRaises (IndexError, a.__getitem__, 2)
def test_alpha_norm_of_fvec(self):
a = fvec(2)
self.assertEqual (alpha_norm(a, 1), 0)
a[0] = 1
self.assertEqual (alpha_norm(a, 1), 0.5)
a[1] = 1
self.assertEqual (alpha_norm(a, 1), 1)
a = array([0, 1], dtype=float_type)
from math import sqrt
assert_almost_equal (alpha_norm(a, 2), sqrt(2)/2.)
def test_alpha_norm_of_none(self):
self.assertRaises (ValueError, alpha_norm, None, 1)
def test_alpha_norm_of_array_of_float32(self):
# check scalar fails
a = array(1, dtype = float_type)
self.assertRaises (ValueError, alpha_norm, a, 1)
# check 2d array fails
a = array([[2],[4]], dtype = float_type)
self.assertRaises (ValueError, alpha_norm, a, 1)
# check 1d array
a = array(range(10), dtype = float_type)
self.assertEqual (alpha_norm(a, 1), 4.5)
def test_alpha_norm_of_array_of_int(self):
a = array(1, dtype = 'int')
self.assertRaises (ValueError, alpha_norm, a, 1)
a = array([[[1,2],[3,4]]], dtype = 'int')
self.assertRaises (ValueError, alpha_norm, a, 1)
a = array(range(10), dtype = 'int')
self.assertRaises (ValueError, alpha_norm, a, 1)
def test_alpha_norm_of_array_of_string (self):
a = "hello"
self.assertRaises (ValueError, alpha_norm, a, 1)
def test_zero_crossing_rate(self):
a = array([0,1,-1], dtype=float_type)
assert_almost_equal (zero_crossing_rate(a), 1./3. )
a = array([0.]*100, dtype=float_type)
self.assertEqual (zero_crossing_rate(a), 0 )
a = array([-1.]*100, dtype=float_type)
self.assertEqual (zero_crossing_rate(a), 0 )
a = array([1.]*100, dtype=float_type)
self.assertEqual (zero_crossing_rate(a), 0 )
def test_alpha_norm_of_array_of_float64(self):
# check scalar fail
a = array(1, dtype = wrong_type)
self.assertRaises (ValueError, alpha_norm, a, 1)
# check 3d array fail
a = array([[[1,2],[3,4]]], dtype = wrong_type)
self.assertRaises (ValueError, alpha_norm, a, 1)
# check float64 1d array fail
a = array(list(range(10)), dtype = wrong_type)
self.assertRaises (ValueError, alpha_norm, a, 1)
# check float64 2d array fail
a = array([list(range(10)), list(range(10))], dtype = wrong_type)
self.assertRaises (ValueError, alpha_norm, a, 1)
def test_fvec_min_removal_of_array(self):
a = array([20,1,19], dtype=float_type)
b = min_removal(a)
assert_equal (array(b), [19, 0, 18])
assert_equal (b, [19, 0, 18])
assert_equal (a, b)
a[0] = 0
assert_equal (a, b)
def test_fvec_min_removal_of_array_float64(self):
a = array([20,1,19], dtype=wrong_type)
self.assertRaises (ValueError, min_removal, a)
def test_fvec_min_removal_of_fvec(self):
a = fvec(3)
a = array([20, 1, 19], dtype = float_type)
b = min_removal(a)
assert_equal (array(b), [19, 0, 18])
assert_equal (b, [19, 0, 18])
assert_equal (a, b)
if __name__ == '__main__':
from unittest import main
main()