|
|
"""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 sys
|
|
|
try:
|
|
|
import pathlib
|
|
|
except ImportError:
|
|
|
pass
|
|
|
from unittest import TestCase, mock
|
|
|
import struct
|
|
|
import wave
|
|
|
from io import BytesIO
|
|
|
|
|
|
# Third-party imports
|
|
|
import nose.tools as nt
|
|
|
import numpy
|
|
|
|
|
|
# Our own imports
|
|
|
from IPython.lib import display
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# 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
|
|
|
if sys.version_info >= (3, 6):
|
|
|
fl = display.FileLink(pathlib.PurePath('example.txt'))
|
|
|
|
|
|
def test_warning_on_non_existant_path_FileLink():
|
|
|
"""FileLink: Calling _repr_html_ on non-existant files returns a warning
|
|
|
"""
|
|
|
fl = display.FileLink('example.txt')
|
|
|
nt.assert_true(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)
|
|
|
nt.assert_equal(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
|
|
|
nt.assert_equal(actual,expected)
|
|
|
|
|
|
def test_error_on_directory_to_FileLink():
|
|
|
"""FileLink: Raises error when passed directory
|
|
|
"""
|
|
|
td = mkdtemp()
|
|
|
nt.assert_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_existant_path_FileLinks():
|
|
|
"""FileLinks: Calling _repr_html_ on non-existant files returns a warning
|
|
|
"""
|
|
|
fls = display.FileLinks('example')
|
|
|
nt.assert_true(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
|
|
|
nt.assert_equal(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
|
|
|
nt.assert_equal(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
|
|
|
nt.assert_equal(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
|
|
|
nt.assert_equal(actual,expected)
|
|
|
|
|
|
def test_error_on_file_to_FileLinks():
|
|
|
"""FileLinks: Raises error when passed file
|
|
|
"""
|
|
|
td = mkdtemp()
|
|
|
tf1 = NamedTemporaryFile(dir=td)
|
|
|
nt.assert_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')
|
|
|
nt.assert_equal(len(actual), 4, actual)
|
|
|
fl = display.FileLinks(td, recursive=False)
|
|
|
actual = str(fl)
|
|
|
actual = actual.split('\n')
|
|
|
nt.assert_equal(len(actual), 2, actual)
|
|
|
|
|
|
def test_audio_from_file():
|
|
|
path = pjoin(dirname(__file__), 'test.wav')
|
|
|
display.Audio(filename=path)
|
|
|
|
|
|
class TestAudioDataWithNumpy(TestCase):
|
|
|
def test_audio_from_numpy_array(self):
|
|
|
test_tone = get_test_tone()
|
|
|
audio = display.Audio(test_tone, rate=44100)
|
|
|
nt.assert_equal(len(read_wav(audio.data)), len(test_tone))
|
|
|
|
|
|
def test_audio_from_list(self):
|
|
|
test_tone = get_test_tone()
|
|
|
audio = display.Audio(list(test_tone), rate=44100)
|
|
|
nt.assert_equal(len(read_wav(audio.data)), len(test_tone))
|
|
|
|
|
|
def test_audio_from_numpy_array_without_rate_raises(self):
|
|
|
nt.assert_raises(ValueError, display.Audio, get_test_tone())
|
|
|
|
|
|
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)))
|
|
|
nt.assert_equal(actual_max_value, expected_max_value)
|
|
|
|
|
|
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)))
|
|
|
nt.assert_equal(actual_max_value, expected_max_value)
|
|
|
|
|
|
def test_audio_data_without_normalization_raises_for_invalid_data(self):
|
|
|
nt.assert_raises(
|
|
|
ValueError,
|
|
|
lambda: display.Audio([1.001], rate=44100, normalize=False))
|
|
|
nt.assert_raises(
|
|
|
ValueError,
|
|
|
lambda: display.Audio([-1.001], rate=44100, normalize=False))
|
|
|
|
|
|
def simulate_numpy_not_installed():
|
|
|
return mock.patch('numpy.array', mock.MagicMock(side_effect=ImportError))
|
|
|
|
|
|
@simulate_numpy_not_installed()
|
|
|
class TestAudioDataWithoutNumpy(TestAudioDataWithNumpy):
|
|
|
# All tests from `TestAudioDataWithNumpy` are inherited.
|
|
|
|
|
|
def test_audio_raises_for_nested_list(self):
|
|
|
stereo_signal = [list(get_test_tone())] * 2
|
|
|
nt.assert_raises(
|
|
|
TypeError,
|
|
|
lambda: display.Audio(stereo_signal, rate=44100))
|
|
|
|
|
|
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>')
|
|
|
|
