| 1 | #! /usr/bin/env python |
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| 2 | |
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| 3 | from numpy.testing import TestCase, run_module_suite |
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| 4 | from numpy.testing import assert_equal, assert_almost_equal |
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| 5 | from aubio import fvec, zero_crossing_rate, alpha_norm, min_removal |
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| 6 | from numpy import array, shape |
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| 7 | |
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| 8 | default_size = 512 |
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| 9 | |
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| 10 | class aubio_fvec_test_case(TestCase): |
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| 11 | |
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| 12 | def test_vector_created_with_zeroes(self): |
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| 13 | a = fvec(10) |
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| 14 | assert a.dtype == 'float32' |
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| 15 | assert a.shape == (10,) |
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| 16 | assert_equal (a, 0) |
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| 17 | |
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| 18 | def test_vector_create_with_list(self): |
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| 19 | a = fvec([0,1,2,3]) |
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| 20 | assert a.dtype == 'float32' |
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| 21 | assert a.shape == (4,) |
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| 22 | assert_equal (range(4), a) |
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| 23 | |
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| 24 | def test_vector_assign_element(self): |
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| 25 | a = fvec(default_size) |
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| 26 | a[0] = 1 |
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| 27 | assert_equal(a[0], 1) |
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| 28 | |
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| 29 | def test_vector_assign_element_end(self): |
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| 30 | a = fvec(default_size) |
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| 31 | a[-1] = 1 |
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| 32 | assert_equal(a[-1], 1) |
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| 33 | assert_equal(a[len(a)-1], 1) |
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| 34 | |
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| 35 | def test_vector(self): |
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| 36 | a = fvec() |
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| 37 | a, len(a) #a.length |
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| 38 | a[0] |
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| 39 | array(a) |
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| 40 | a = fvec(10) |
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| 41 | a = fvec(1) |
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| 42 | a.T |
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| 43 | array(a).T |
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| 44 | a = range(len(a)) |
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| 45 | |
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| 46 | def test_wrong_values(self): |
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| 47 | self.assertRaises (ValueError, fvec, -10) |
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| 48 | |
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| 49 | a = fvec(2) |
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| 50 | self.assertRaises (IndexError, a.__getitem__, 3) |
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| 51 | self.assertRaises (IndexError, a.__getitem__, 2) |
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| 52 | |
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| 53 | def test_alpha_norm_of_fvec(self): |
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| 54 | a = fvec(2) |
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| 55 | self.assertEquals (alpha_norm(a, 1), 0) |
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| 56 | a[0] = 1 |
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| 57 | self.assertEquals (alpha_norm(a, 1), 0.5) |
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| 58 | a[1] = 1 |
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| 59 | self.assertEquals (alpha_norm(a, 1), 1) |
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| 60 | a = array([0, 1], dtype='float32') |
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| 61 | from math import sqrt |
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| 62 | assert_almost_equal (alpha_norm(a, 2), sqrt(2)/2.) |
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| 63 | |
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| 64 | def test_alpha_norm_of_none(self): |
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| 65 | self.assertRaises (ValueError, alpha_norm, None, 1) |
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| 66 | |
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| 67 | def test_alpha_norm_of_array_of_float32(self): |
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| 68 | # check scalar fails |
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| 69 | a = array(1, dtype = 'float32') |
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| 70 | self.assertRaises (ValueError, alpha_norm, a, 1) |
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| 71 | # check 2d array fails |
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| 72 | a = array([[2],[4]], dtype = 'float32') |
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| 73 | self.assertRaises (ValueError, alpha_norm, a, 1) |
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| 74 | # check 1d array |
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| 75 | a = array(range(10), dtype = 'float32') |
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| 76 | self.assertEquals (alpha_norm(a, 1), 4.5) |
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| 77 | |
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| 78 | def test_alpha_norm_of_array_of_int(self): |
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| 79 | a = array(1, dtype = 'int') |
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| 80 | self.assertRaises (ValueError, alpha_norm, a, 1) |
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| 81 | a = array([[[1,2],[3,4]]], dtype = 'int') |
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| 82 | self.assertRaises (ValueError, alpha_norm, a, 1) |
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| 83 | a = array(range(10), dtype = 'int') |
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| 84 | self.assertRaises (ValueError, alpha_norm, a, 1) |
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| 85 | |
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| 86 | def test_alpha_norm_of_array_of_string (self): |
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| 87 | a = "hello" |
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| 88 | self.assertRaises (ValueError, alpha_norm, a, 1) |
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| 89 | |
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| 90 | def test_zero_crossing_rate(self): |
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| 91 | a = array([0,1,-1], dtype='float32') |
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| 92 | assert_almost_equal (zero_crossing_rate(a), 1./3. ) |
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| 93 | a = array([0.]*100, dtype='float32') |
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| 94 | self.assertEquals (zero_crossing_rate(a), 0 ) |
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| 95 | a = array([-1.]*100, dtype='float32') |
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| 96 | self.assertEquals (zero_crossing_rate(a), 0 ) |
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| 97 | a = array([1.]*100, dtype='float32') |
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| 98 | self.assertEquals (zero_crossing_rate(a), 0 ) |
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| 99 | |
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| 100 | def test_alpha_norm_of_array_of_float64(self): |
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| 101 | # check scalar fail |
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| 102 | a = array(1, dtype = 'float64') |
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| 103 | self.assertRaises (ValueError, alpha_norm, a, 1) |
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| 104 | # check 3d array fail |
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| 105 | a = array([[[1,2],[3,4]]], dtype = 'float64') |
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| 106 | self.assertRaises (ValueError, alpha_norm, a, 1) |
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| 107 | # check float64 1d array fail |
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| 108 | a = array(range(10), dtype = 'float64') |
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| 109 | self.assertRaises (ValueError, alpha_norm, a, 1) |
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| 110 | # check float64 2d array fail |
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| 111 | a = array([range(10), range(10)], dtype = 'float64') |
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| 112 | self.assertRaises (ValueError, alpha_norm, a, 1) |
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| 113 | |
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| 114 | def test_fvec_min_removal_of_array(self): |
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| 115 | a = array([20,1,19], dtype='float32') |
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| 116 | b = min_removal(a) |
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| 117 | assert_equal (array(b), [19, 0, 18]) |
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| 118 | assert_equal (b, [19, 0, 18]) |
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| 119 | assert_equal (a, b) |
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| 120 | a[0] = 0 |
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| 121 | assert_equal (a, b) |
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| 122 | |
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| 123 | def test_fvec_min_removal_of_array_float64(self): |
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| 124 | a = array([20,1,19], dtype='float64') |
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| 125 | self.assertRaises (ValueError, min_removal, a) |
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| 126 | |
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| 127 | def test_fvec_min_removal_of_fvec(self): |
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| 128 | a = fvec(3) |
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| 129 | a = array([20, 1, 19], dtype = 'float32') |
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| 130 | b = min_removal(a) |
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| 131 | assert_equal (array(b), [19, 0, 18]) |
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| 132 | assert_equal (b, [19, 0, 18]) |
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| 133 | assert_equal (a, b) |
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| 134 | |
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| 135 | if __name__ == '__main__': |
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| 136 | from unittest import main |
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| 137 | main() |
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