Spaces:
Runtime error
Runtime error
File size: 9,313 Bytes
4a51346 |
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 |
"""Tests for IPython.lib.display.
"""
#-----------------------------------------------------------------------------
# Copyright (c) 2012, the IPython Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file COPYING.txt, distributed with this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
from tempfile import NamedTemporaryFile, mkdtemp
from os.path import split, join as pjoin, dirname
import pathlib
from unittest import TestCase, mock
import struct
import wave
from io import BytesIO
# Third-party imports
import pytest
try:
import numpy
except ImportError:
pass
# Our own imports
from IPython.lib import display
from IPython.testing.decorators import skipif_not_numpy
#-----------------------------------------------------------------------------
# Classes and functions
#-----------------------------------------------------------------------------
#--------------------------
# FileLink tests
#--------------------------
def test_instantiation_FileLink():
"""FileLink: Test class can be instantiated"""
fl = display.FileLink('example.txt')
# TODO: remove if when only Python >= 3.6 is supported
fl = display.FileLink(pathlib.PurePath('example.txt'))
def test_warning_on_non_existent_path_FileLink():
"""FileLink: Calling _repr_html_ on non-existent files returns a warning"""
fl = display.FileLink("example.txt")
assert fl._repr_html_().startswith("Path (<tt>example.txt</tt>)")
def test_existing_path_FileLink():
"""FileLink: Calling _repr_html_ functions as expected on existing filepath
"""
tf = NamedTemporaryFile()
fl = display.FileLink(tf.name)
actual = fl._repr_html_()
expected = "<a href='%s' target='_blank'>%s</a><br>" % (tf.name, tf.name)
assert actual == expected
def test_existing_path_FileLink_repr():
"""FileLink: Calling repr() functions as expected on existing filepath
"""
tf = NamedTemporaryFile()
fl = display.FileLink(tf.name)
actual = repr(fl)
expected = tf.name
assert actual == expected
def test_error_on_directory_to_FileLink():
"""FileLink: Raises error when passed directory
"""
td = mkdtemp()
pytest.raises(ValueError, display.FileLink, td)
#--------------------------
# FileLinks tests
#--------------------------
def test_instantiation_FileLinks():
"""FileLinks: Test class can be instantiated
"""
fls = display.FileLinks('example')
def test_warning_on_non_existent_path_FileLinks():
"""FileLinks: Calling _repr_html_ on non-existent files returns a warning"""
fls = display.FileLinks("example")
assert fls._repr_html_().startswith("Path (<tt>example</tt>)")
def test_existing_path_FileLinks():
"""FileLinks: Calling _repr_html_ functions as expected on existing dir
"""
td = mkdtemp()
tf1 = NamedTemporaryFile(dir=td)
tf2 = NamedTemporaryFile(dir=td)
fl = display.FileLinks(td)
actual = fl._repr_html_()
actual = actual.split('\n')
actual.sort()
# the links should always have forward slashes, even on windows, so replace
# backslashes with forward slashes here
expected = ["%s/<br>" % td,
" <a href='%s' target='_blank'>%s</a><br>" %\
(tf2.name.replace("\\","/"),split(tf2.name)[1]),
" <a href='%s' target='_blank'>%s</a><br>" %\
(tf1.name.replace("\\","/"),split(tf1.name)[1])]
expected.sort()
# We compare the sorted list of links here as that's more reliable
assert actual == expected
def test_existing_path_FileLinks_alt_formatter():
"""FileLinks: Calling _repr_html_ functions as expected w/ an alt formatter
"""
td = mkdtemp()
tf1 = NamedTemporaryFile(dir=td)
tf2 = NamedTemporaryFile(dir=td)
def fake_formatter(dirname,fnames,included_suffixes):
return ["hello","world"]
fl = display.FileLinks(td,notebook_display_formatter=fake_formatter)
actual = fl._repr_html_()
actual = actual.split('\n')
actual.sort()
expected = ["hello","world"]
expected.sort()
# We compare the sorted list of links here as that's more reliable
assert actual == expected
def test_existing_path_FileLinks_repr():
"""FileLinks: Calling repr() functions as expected on existing directory """
td = mkdtemp()
tf1 = NamedTemporaryFile(dir=td)
tf2 = NamedTemporaryFile(dir=td)
fl = display.FileLinks(td)
actual = repr(fl)
actual = actual.split('\n')
actual.sort()
expected = ['%s/' % td, ' %s' % split(tf1.name)[1],' %s' % split(tf2.name)[1]]
expected.sort()
# We compare the sorted list of links here as that's more reliable
assert actual == expected
def test_existing_path_FileLinks_repr_alt_formatter():
"""FileLinks: Calling repr() functions as expected w/ alt formatter
"""
td = mkdtemp()
tf1 = NamedTemporaryFile(dir=td)
tf2 = NamedTemporaryFile(dir=td)
def fake_formatter(dirname,fnames,included_suffixes):
return ["hello","world"]
fl = display.FileLinks(td,terminal_display_formatter=fake_formatter)
actual = repr(fl)
actual = actual.split('\n')
actual.sort()
expected = ["hello","world"]
expected.sort()
# We compare the sorted list of links here as that's more reliable
assert actual == expected
def test_error_on_file_to_FileLinks():
"""FileLinks: Raises error when passed file
"""
td = mkdtemp()
tf1 = NamedTemporaryFile(dir=td)
pytest.raises(ValueError, display.FileLinks, tf1.name)
def test_recursive_FileLinks():
"""FileLinks: Does not recurse when recursive=False
"""
td = mkdtemp()
tf = NamedTemporaryFile(dir=td)
subtd = mkdtemp(dir=td)
subtf = NamedTemporaryFile(dir=subtd)
fl = display.FileLinks(td)
actual = str(fl)
actual = actual.split('\n')
assert len(actual) == 4, actual
fl = display.FileLinks(td, recursive=False)
actual = str(fl)
actual = actual.split('\n')
assert len(actual) == 2, actual
def test_audio_from_file():
path = pjoin(dirname(__file__), 'test.wav')
display.Audio(filename=path)
class TestAudioDataWithNumpy(TestCase):
@skipif_not_numpy
def test_audio_from_numpy_array(self):
test_tone = get_test_tone()
audio = display.Audio(test_tone, rate=44100)
assert len(read_wav(audio.data)) == len(test_tone)
@skipif_not_numpy
def test_audio_from_list(self):
test_tone = get_test_tone()
audio = display.Audio(list(test_tone), rate=44100)
assert len(read_wav(audio.data)) == len(test_tone)
@skipif_not_numpy
def test_audio_from_numpy_array_without_rate_raises(self):
self.assertRaises(ValueError, display.Audio, get_test_tone())
@skipif_not_numpy
def test_audio_data_normalization(self):
expected_max_value = numpy.iinfo(numpy.int16).max
for scale in [1, 0.5, 2]:
audio = display.Audio(get_test_tone(scale), rate=44100)
actual_max_value = numpy.max(numpy.abs(read_wav(audio.data)))
assert actual_max_value == expected_max_value
@skipif_not_numpy
def test_audio_data_without_normalization(self):
max_int16 = numpy.iinfo(numpy.int16).max
for scale in [1, 0.5, 0.2]:
test_tone = get_test_tone(scale)
test_tone_max_abs = numpy.max(numpy.abs(test_tone))
expected_max_value = int(max_int16 * test_tone_max_abs)
audio = display.Audio(test_tone, rate=44100, normalize=False)
actual_max_value = numpy.max(numpy.abs(read_wav(audio.data)))
assert actual_max_value == expected_max_value
def test_audio_data_without_normalization_raises_for_invalid_data(self):
self.assertRaises(
ValueError,
lambda: display.Audio([1.001], rate=44100, normalize=False))
self.assertRaises(
ValueError,
lambda: display.Audio([-1.001], rate=44100, normalize=False))
def simulate_numpy_not_installed():
try:
import numpy
return mock.patch('numpy.array', mock.MagicMock(side_effect=ImportError))
except ModuleNotFoundError:
return lambda x:x
@simulate_numpy_not_installed()
class TestAudioDataWithoutNumpy(TestAudioDataWithNumpy):
# All tests from `TestAudioDataWithNumpy` are inherited.
@skipif_not_numpy
def test_audio_raises_for_nested_list(self):
stereo_signal = [list(get_test_tone())] * 2
self.assertRaises(TypeError, lambda: display.Audio(stereo_signal, rate=44100))
@skipif_not_numpy
def get_test_tone(scale=1):
return numpy.sin(2 * numpy.pi * 440 * numpy.linspace(0, 1, 44100)) * scale
def read_wav(data):
with wave.open(BytesIO(data)) as wave_file:
wave_data = wave_file.readframes(wave_file.getnframes())
num_samples = wave_file.getnframes() * wave_file.getnchannels()
return struct.unpack('<%sh' % num_samples, wave_data)
def test_code_from_file():
c = display.Code(filename=__file__)
assert c._repr_html_().startswith('<style>')
|