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Fixed database typo and removed unnecessary class identifier.

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Batuhan Berk Başoğlu 2020-10-14 10:10:37 -04:00
parent 00ad49a143
commit 45fb349a7d
5098 changed files with 952558 additions and 85 deletions
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venv/Lib/site-packages/scipy/io/tests/test_wavfile.py Normal file
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import os
import sys
import tempfile
from io import BytesIO
import numpy as np
from numpy.testing import (assert_equal, assert_, assert_array_equal,
suppress_warnings)
from pytest import raises, warns
from scipy.io import wavfile
def datafile(fn):
return os.path.join(os.path.dirname(__file__), 'data', fn)
def test_read_1():
# 32-bit PCM (which uses extensible format)
for mmap in [False, True]:
filename = 'test-44100Hz-le-1ch-4bytes.wav'
rate, data = wavfile.read(datafile(filename), mmap=mmap)
assert_equal(rate, 44100)
assert_(np.issubdtype(data.dtype, np.int32))
assert_equal(data.shape, (4410,))
del data
def test_read_2():
# 8-bit unsigned PCM
for mmap in [False, True]:
filename = 'test-8000Hz-le-2ch-1byteu.wav'
rate, data = wavfile.read(datafile(filename), mmap=mmap)
assert_equal(rate, 8000)
assert_(np.issubdtype(data.dtype, np.uint8))
assert_equal(data.shape, (800, 2))
del data
def test_read_3():
# Little-endian float
for mmap in [False, True]:
filename = 'test-44100Hz-2ch-32bit-float-le.wav'
rate, data = wavfile.read(datafile(filename), mmap=mmap)
assert_equal(rate, 44100)
assert_(np.issubdtype(data.dtype, np.float32))
assert_equal(data.shape, (441, 2))
del data
def test_read_4():
# Contains unsupported 'PEAK' chunk
for mmap in [False, True]:
with suppress_warnings() as sup:
sup.filter(wavfile.WavFileWarning,
"Chunk .non-data. not understood, skipping it")
filename = 'test-48000Hz-2ch-64bit-float-le-wavex.wav'
rate, data = wavfile.read(datafile(filename), mmap=mmap)
assert_equal(rate, 48000)
assert_(np.issubdtype(data.dtype, np.float64))
assert_equal(data.shape, (480, 2))
del data
def test_read_5():
# Big-endian float
for mmap in [False, True]:
filename = 'test-44100Hz-2ch-32bit-float-be.wav'
rate, data = wavfile.read(datafile(filename), mmap=mmap)
assert_equal(rate, 44100)
assert_(np.issubdtype(data.dtype, np.float32))
assert_(data.dtype.byteorder == '>' or (sys.byteorder == 'big' and
data.dtype.byteorder == '='))
assert_equal(data.shape, (441, 2))
del data
def test_read_unknown_filetype_fail():
# Not an RIFF
for mmap in [False, True]:
filename = 'example_1.nc'
with open(datafile(filename), 'rb') as fp:
with raises(ValueError, match="CDF.*'RIFF' and 'RIFX' supported"):
wavfile.read(fp, mmap=mmap)
def test_read_unknown_riff_form_type():
# RIFF, but not WAVE form
for mmap in [False, True]:
filename = 'Transparent Busy.ani'
with open(datafile(filename), 'rb') as fp:
with raises(ValueError, match='Not a WAV file.*ACON'):
wavfile.read(fp, mmap=mmap)
def test_read_unknown_wave_format():
# RIFF and WAVE, but not supported format
for mmap in [False, True]:
filename = 'test-8000Hz-le-1ch-1byte-ulaw.wav'
with open(datafile(filename), 'rb') as fp:
with raises(ValueError, match='Unknown wave file format.*MULAW.*'
'Supported formats'):
wavfile.read(fp, mmap=mmap)
def test_read_early_eof_with_data():
# File ends inside 'data' chunk, but we keep incomplete data
for mmap in [False, True]:
filename = 'test-44100Hz-le-1ch-4bytes-early-eof.wav'
with open(datafile(filename), 'rb') as fp:
with warns(wavfile.WavFileWarning, match='Reached EOF'):
rate, data = wavfile.read(fp, mmap=mmap)
assert_(data.size > 0)
assert_equal(rate, 44100)
del data
def test_read_early_eof():
# File ends after 'fact' chunk at boundary, no data read
for mmap in [False, True]:
filename = 'test-44100Hz-le-1ch-4bytes-early-eof-no-data.wav'
with open(datafile(filename), 'rb') as fp:
with raises(ValueError, match="Unexpected end of file."):
wavfile.read(fp, mmap=mmap)
def test_read_incomplete_chunk():
# File ends inside 'fmt ' chunk ID, no data read
for mmap in [False, True]:
filename = 'test-44100Hz-le-1ch-4bytes-incomplete-chunk.wav'
with open(datafile(filename), 'rb') as fp:
with raises(ValueError, match="Incomplete chunk ID.*b'f'"):
wavfile.read(fp, mmap=mmap)
def _check_roundtrip(realfile, rate, dtype, channels):
if realfile:
fd, tmpfile = tempfile.mkstemp(suffix='.wav')
os.close(fd)
else:
tmpfile = BytesIO()
try:
data = np.random.rand(100, channels)
if channels == 1:
data = data[:, 0]
if dtype.kind == 'f':
# The range of the float type should be in [-1, 1]
data = data.astype(dtype)
else:
data = (data*128).astype(dtype)
wavfile.write(tmpfile, rate, data)
for mmap in [False, True]:
rate2, data2 = wavfile.read(tmpfile, mmap=mmap)
assert_equal(rate, rate2)
assert_(data2.dtype.byteorder in ('<', '=', '|'), msg=data2.dtype)
assert_array_equal(data, data2)
del data2
finally:
if realfile:
os.unlink(tmpfile)
def test_write_roundtrip():
for realfile in (False, True):
for dtypechar in ('i', 'u', 'f', 'g', 'q'):
for size in (1, 2, 4, 8):
if size == 1 and dtypechar == 'i':
# signed 8-bit integer PCM is not allowed
continue
if size > 1 and dtypechar == 'u':
# unsigned > 8-bit integer PCM is not allowed
continue
if (size == 1 or size == 2) and dtypechar == 'f':
# 8- or 16-bit float PCM is not expected
continue
if dtypechar in 'gq':
# no size allowed for these types
if size == 1:
size = ''
else:
continue
for endianness in ('>', '<'):
if size == 1 and endianness == '<':
continue
for rate in (8000, 32000):
for channels in (1, 2, 5):
dt = np.dtype('%s%s%s' % (endianness, dtypechar,
size))
_check_roundtrip(realfile, rate, dt, channels)