3 from unittest import main
5 from numpy.testing import TestCase, assert_equal, assert_almost_equal
6 from aubio import fvec, zero_crossing_rate, alpha_norm, min_removal
7 from aubio import float_type
9 wrong_type = 'float32' if float_type == 'float64' else 'float64'
13 class aubio_fvec_test_case(TestCase):
15 def test_vector_created_with_zeroes(self):
17 assert a.dtype == float_type
18 assert a.shape == (10,)
21 def test_vector_create_with_list(self):
22 a = fvec([0, 1, 2, 3])
23 assert a.dtype == float_type
24 assert a.shape == (4,)
25 assert_equal(list(range(4)), a)
27 def test_vector_assign_element(self):
28 a = fvec(default_size)
32 def test_vector_assign_element_end(self):
33 a = fvec(default_size)
35 assert_equal(a[-1], 1)
36 assert_equal(a[len(a)-1], 1)
38 def test_vector(self):
47 class aubio_fvec_wrong_values(TestCase):
49 def test_negative_length(self):
50 """ test creating fvec with negative length fails (pure python) """
51 self.assertRaises(ValueError, fvec, -10)
53 def test_zero_length(self):
54 """ test creating fvec with zero length fails (pure python) """
55 self.assertRaises(ValueError, fvec, 0)
57 def test_out_of_bound(self):
58 """ test assiging fvec out of bounds fails (pure python) """
60 self.assertRaises(IndexError, a.__getitem__, 3)
61 self.assertRaises(IndexError, a.__getitem__, 2)
63 class aubio_wrong_fvec_input(TestCase):
64 """ uses min_removal to test PyAubio_IsValidVector """
66 def test_no_input(self):
67 self.assertRaises(TypeError, min_removal)
70 self.assertRaises(ValueError, min_removal, None)
72 def test_wrong_scalar(self):
73 a = np.array(10, dtype=float_type)
74 self.assertRaises(ValueError, min_removal, a)
76 def test_wrong_dimensions(self):
77 a = np.array([[[1, 2], [3, 4]]], dtype=float_type)
78 self.assertRaises(ValueError, min_removal, a)
80 def test_wrong_array_size(self):
81 x = np.array([], dtype=float_type)
82 self.assertRaises(ValueError, min_removal, x)
84 def test_wrong_type(self):
85 a = np.zeros(10, dtype=wrong_type)
86 self.assertRaises(ValueError, min_removal, a)
88 def test_wrong_list_input(self):
89 self.assertRaises(ValueError, min_removal, [0., 1.])
91 def test_good_input(self):
92 a = np.zeros(10, dtype=float_type)
93 assert_equal(np.zeros(10, dtype=float_type), min_removal(a))
95 class aubio_alpha_norm(TestCase):
97 def test_alpha_norm_of_random(self):
98 x = np.random.rand(1024).astype(float_type)
99 alpha = np.random.rand() * 5.
100 x_alpha_norm = (np.sum(np.abs(x)**alpha)/len(x))**(1/alpha)
101 assert_almost_equal(alpha_norm(x, alpha), x_alpha_norm, decimal = 5)
103 class aubio_zero_crossing_rate_test(TestCase):
105 def test_zero_crossing_rate(self):
106 a = np.array([0, 1, -1], dtype=float_type)
107 assert_almost_equal(zero_crossing_rate(a), 1./3.)
109 def test_zero_crossing_rate_zeros(self):
110 a = np.zeros(100, dtype=float_type)
111 self.assertEqual(zero_crossing_rate(a), 0)
113 def test_zero_crossing_rate_minus_ones(self):
114 a = np.ones(100, dtype=float_type)
115 self.assertEqual(zero_crossing_rate(a), 0)
117 def test_zero_crossing_rate_plus_ones(self):
118 a = np.ones(100, dtype=float_type)
119 self.assertEqual(zero_crossing_rate(a), 0)
121 class aubio_fvec_min_removal(TestCase):
123 def test_fvec_min_removal_of_array(self):
124 a = np.array([20, 1, 19], dtype=float_type)
126 assert_equal(b, [19, 0, 18])
128 class aubio_fvec_test_memory(TestCase):
130 def test_pass_to_numpy(self):
142 if __name__ == '__main__':