source: python/tests/test_source.py @ 39be048

feature/autosinkfeature/constantqfeature/pitchshiftfeature/pydocstringsfeature/timestretchsampler
Last change on this file since 39be048 was 39be048, checked in by Paul Brossier <piem@piem.org>, 3 years ago

python/tests/test_source.py: test with interface (PEP 343)

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1#! /usr/bin/env python
2
3from nose2 import main
4from nose2.tools import params
5from numpy.testing import TestCase, assert_equal
6from aubio import source
7from .utils import list_all_sounds
8import numpy as np
9
10import warnings
11warnings.filterwarnings('ignore', category=UserWarning, append=True)
12
13list_of_sounds = list_all_sounds('sounds')
14samplerates = [0, 44100, 8000, 32000]
15hop_sizes = [512, 1024, 64]
16
17path = None
18
19all_params = []
20for soundfile in list_of_sounds:
21    for hop_size in hop_sizes:
22        for samplerate in samplerates:
23            all_params.append((hop_size, samplerate, soundfile))
24
25
26class aubio_source_test_case_base(TestCase):
27
28    def setUp(self):
29        if not len(list_of_sounds):
30            self.skipTest('add some sound files in \'python/tests/sounds\'')
31        self.default_test_sound = list_of_sounds[0]
32
33class aubio_source_test_case(aubio_source_test_case_base):
34
35    @params(*list_of_sounds)
36    def test_close_file(self, filename):
37        samplerate = 0 # use native samplerate
38        hop_size = 256
39        f = source(filename, samplerate, hop_size)
40        f.close()
41
42    @params(*list_of_sounds)
43    def test_close_file_twice(self, filename):
44        samplerate = 0 # use native samplerate
45        hop_size = 256
46        f = source(filename, samplerate, hop_size)
47        f.close()
48        f.close()
49
50class aubio_source_read_test_case(aubio_source_test_case_base):
51
52    def read_from_source(self, f):
53        total_frames = 0
54        while True:
55            samples , read = f()
56            total_frames += read
57            if read < f.hop_size:
58                assert_equal(samples[read:], 0)
59                break
60        #result_str = "read {:.2f}s ({:d} frames in {:d} blocks at {:d}Hz) from {:s}"
61        #result_params = total_frames / float(f.samplerate), total_frames, total_frames//f.hop_size, f.samplerate, f.uri
62        #print (result_str.format(*result_params))
63        return total_frames
64
65    @params(*all_params)
66    def test_samplerate_hopsize(self, hop_size, samplerate, soundfile):
67        try:
68            f = source(soundfile, samplerate, hop_size)
69        except RuntimeError as e:
70            self.skipTest('failed opening with hop_s = {:d}, samplerate = {:d} ({:s})'.format(hop_size, samplerate, str(e)))
71        assert f.samplerate != 0
72        read_frames = self.read_from_source(f)
73        if 'f_' in soundfile and samplerate == 0:
74            import re
75            f = re.compile('.*_\([0:9]*f\)_.*')
76            match_f = re.findall('([0-9]*)f_', soundfile)
77            if len(match_f) == 1:
78                expected_frames = int(match_f[0])
79                self.assertEqual(expected_frames, read_frames)
80
81    @params(*list_of_sounds)
82    def test_samplerate_none(self, p):
83        f = source(p)
84        assert f.samplerate != 0
85        self.read_from_source(f)
86
87    @params(*list_of_sounds)
88    def test_samplerate_0(self, p):
89        f = source(p, 0)
90        assert f.samplerate != 0
91        self.read_from_source(f)
92
93    @params(*list_of_sounds)
94    def test_zero_hop_size(self, p):
95        f = source(p, 0, 0)
96        assert f.samplerate != 0
97        assert f.hop_size != 0
98        self.read_from_source(f)
99
100    @params(*list_of_sounds)
101    def test_seek_to_half(self, p):
102        from random import randint
103        f = source(p, 0, 0)
104        assert f.samplerate != 0
105        assert f.hop_size != 0
106        a = self.read_from_source(f)
107        c = randint(0, a)
108        f.seek(c)
109        b = self.read_from_source(f)
110        assert a == b + c
111
112    @params(*list_of_sounds)
113    def test_duration(self, p):
114        total_frames = 0
115        f = source(p)
116        duration = f.duration
117        while True:
118            _, read = f()
119            total_frames += read
120            if read < f.hop_size: break
121        self.assertEqual(duration, total_frames)
122
123
124class aubio_source_test_wrong_params(TestCase):
125
126    def test_wrong_file(self):
127        with self.assertRaises(RuntimeError):
128            source('path_to/unexisting file.mp3')
129
130class aubio_source_test_wrong_params_with_file(aubio_source_test_case_base):
131
132    def test_wrong_samplerate(self):
133        with self.assertRaises(ValueError):
134            source(self.default_test_sound, -1)
135
136    def test_wrong_hop_size(self):
137        with self.assertRaises(ValueError):
138            source(self.default_test_sound, 0, -1)
139
140    def test_wrong_channels(self):
141        with self.assertRaises(ValueError):
142            source(self.default_test_sound, 0, 0, -1)
143
144    def test_wrong_seek(self):
145        f = source(self.default_test_sound)
146        with self.assertRaises(ValueError):
147            f.seek(-1)
148
149    def test_wrong_seek_too_large(self):
150        f = source(self.default_test_sound)
151        try:
152            with self.assertRaises(ValueError):
153                f.seek(f.duration + f.samplerate * 10)
154        except AssertionError:
155            self.skipTest('seeking after end of stream failed raising ValueError')
156
157class aubio_source_readmulti_test_case(aubio_source_read_test_case):
158
159    def read_from_source(self, f):
160        total_frames = 0
161        while True:
162            samples, read = f.do_multi()
163            total_frames += read
164            if read < f.hop_size:
165                assert_equal(samples[:,read:], 0)
166                break
167        #result_str = "read {:.2f}s ({:d} frames in {:d} channels and {:d} blocks at {:d}Hz) from {:s}"
168        #result_params = total_frames / float(f.samplerate), total_frames, f.channels, int(total_frames/f.hop_size), f.samplerate, f.uri
169        #print (result_str.format(*result_params))
170        return total_frames
171
172class aubio_source_with(aubio_source_test_case_base):
173
174    #@params(*list_of_sounds)
175    @params(*list_of_sounds)
176    def test_read_from_mono(self, filename):
177        total_frames = 0
178        hop_size = 2048
179        with source(filename, 0, hop_size) as input_source:
180            assert_equal(input_source.hop_size, hop_size)
181            #assert_equal(input_source.samplerate, samplerate)
182            total_frames = 0
183            for frames in input_source:
184                total_frames += frames.shape[-1]
185            # check we read as many samples as we expected
186            assert_equal(total_frames, input_source.duration)
187
188if __name__ == '__main__':
189    main()
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