1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
import os
import sys
import time
import unittest
import pyaudio
import alsa_utils
# To skip tests requiring hardware, set this environment variable:
SKIP_HW_TESTS = 'PYAUDIO_SKIP_HW_TESTS' in os.environ
setUpModule = alsa_utils.disable_error_handler_output
tearDownModule = alsa_utils.disable_error_handler_output
class PyAudioErrorTests(unittest.TestCase):
def setUp(self):
self.p = pyaudio.PyAudio()
def tearDown(self):
self.p.terminate()
def test_invalid_sample_size(self):
with self.assertRaises(ValueError) as cm:
self.p.get_sample_size(10)
e = cm.exception
self.assertEqual(e.args[1], pyaudio.paSampleFormatNotSupported)
def test_invalid_width(self):
with self.assertRaises(ValueError):
self.p.get_format_from_width(8)
def test_invalid_hostapi_type(self):
with self.assertRaises(IOError) as cm:
self.p.get_host_api_info_by_type(-1)
e = cm.exception
self.assertEqual(e.args[0], pyaudio.paHostApiNotFound)
def test_invalid_hostapi_index(self):
with self.assertRaises(IOError) as cm:
self.p.get_host_api_info_by_index(-1)
e = cm.exception
self.assertEqual(e.args[0], pyaudio.paInvalidHostApi)
def test_valid_host_api_invalid_devinfo(self):
with self.assertRaises(IOError) as cm:
self.p.get_device_info_by_host_api_device_index(0, -1)
e = cm.exception
self.assertTrue(e.args[0] in (pyaudio.paInvalidDevice,
pyaudio.paInvalidHostApi))
def test_invalid_host_api_valid_devinfo(self):
with self.assertRaises(IOError) as cm:
self.p.get_device_info_by_host_api_device_index(-1, 0)
e = cm.exception
self.assertTrue(e.args[0] in (pyaudio.paInvalidDevice,
pyaudio.paInvalidHostApi))
def test_invalid_device_devinfo(self):
with self.assertRaises(IOError) as cm:
self.p.get_device_info_by_index(-1)
e = cm.exception
self.assertEqual(e.args[0], pyaudio.paInvalidDevice)
@unittest.skipIf(SKIP_HW_TESTS, 'Hardware device required.')
def test_error_without_stream_start(self):
with self.assertRaises(IOError) as cm:
stream = self.p.open(channels=1,
rate=44100,
format=pyaudio.paInt16,
input=True,
start=False) # not starting stream
stream.read(2)
e = cm.exception
self.assertEqual(e.args[0], pyaudio.paStreamIsStopped)
@unittest.skipIf(SKIP_HW_TESTS, 'Hardware device required.')
def test_error_writing_to_readonly_stream(self):
with self.assertRaises(IOError) as cm:
stream = self.p.open(channels=1,
rate=44100,
format=pyaudio.paInt16,
input=True)
stream.write('foo')
e = cm.exception
self.assertEqual(e.args[1], pyaudio.paCanNotWriteToAnInputOnlyStream)
@unittest.skipIf(SKIP_HW_TESTS, 'Hardware device required.')
def test_error_negative_frames(self):
with self.assertRaises(ValueError):
stream = self.p.open(channels=1,
rate=44100,
format=pyaudio.paInt16,
input=True)
stream.read(-1)
@unittest.skipIf(SKIP_HW_TESTS, 'Hardware device required.')
def test_invalid_attr_on_closed_stream(self):
stream = self.p.open(channels=1,
rate=44100,
format=pyaudio.paInt16,
input=True)
stream.close()
with self.assertRaises(IOError) as cm:
stream.get_input_latency()
e = cm.exception
self.assertEqual(e.args[0], pyaudio.paBadStreamPtr)
with self.assertRaises(IOError) as cm:
stream.read(1)
e = cm.exception
self.assertEqual(e.args[0], pyaudio.paBadStreamPtr)
def test_invalid_format_supported(self):
with self.assertRaises(ValueError) as cm:
self.p.is_format_supported(8000, -1, 1, pyaudio.paInt16)
e = cm.exception
self.assertEqual(e.args[1], pyaudio.paInvalidDevice)
with self.assertRaises(ValueError) as cm:
self.p.is_format_supported(8000, 0, -1, pyaudio.paInt16)
e = cm.exception
self.assertEqual(e.args[1], pyaudio.paInvalidChannelCount)
with self.assertRaises(ValueError) as cm:
self.p.is_format_supported(8000,
input_device=None,
output_device=None)
e = cm.exception
self.assertEqual(e.args[1], pyaudio.paInvalidDevice)
# It's difficult to invoke an underflow on ALSA, so skip.
@unittest.skipIf('linux' in sys.platform,
'skipping underflow test on linux.')
@unittest.skipIf(SKIP_HW_TESTS, 'Hardware device required.')
def test_write_underflow_exception(self):
stream = self.p.open(channels=1,
rate=44100,
format=pyaudio.paInt16,
output=True)
time.sleep(0.5)
stream.write('\x00\x00\x00\x00', exception_on_underflow=False)
with self.assertRaises(IOError) as err:
# The sleep time requires some tuning to invoke an underflow error,
# depending on the platform.
time.sleep(1)
stream.write('\x00\x00\x00\x00', exception_on_underflow=True)
self.assertEqual(err.exception.errno, pyaudio.paOutputUnderflowed)
self.assertEqual(err.exception.strerror, 'Output underflowed')
# It's difficult to invoke an underflow on ALSA, so skip.
@unittest.skipIf('linux' in sys.platform,
'skipping underflow test on linux.')
@unittest.skipIf(SKIP_HW_TESTS, 'Hardware device required.')
def test_read_overflow_exception(self):
stream = self.p.open(channels=1,
rate=44100,
format=pyaudio.paInt16,
input=True)
time.sleep(0.5)
stream.read(2, exception_on_overflow=False)
with self.assertRaises(IOError) as err:
time.sleep(0.5)
stream.read(2, exception_on_overflow=True)
self.assertEqual(err.exception.errno, pyaudio.paInputOverflowed)
self.assertEqual(err.exception.strerror, 'Input overflowed')
|
