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test_kernelspec.py
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test_kernelspec.py
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# Copyright (c) IPython Development Team.
# Distributed under the terms of the Modified BSD License.
import json
import io
import os
import shutil
import sys
import tempfile
from unittest import mock
from jupyter_core.paths import jupyter_data_dir
from ipykernel.kernelspec import (
make_ipkernel_cmd,
get_kernel_dict,
write_kernel_spec,
install,
InstallIPythonKernelSpecApp,
KERNEL_NAME,
RESOURCES,
)
import pytest
import nose.tools as nt
pjoin = os.path.join
def test_make_ipkernel_cmd():
cmd = make_ipkernel_cmd()
nt.assert_equal(cmd, [
sys.executable,
'-m',
'ipykernel_launcher',
'-f',
'{connection_file}'
])
def assert_kernel_dict(d):
assert d['argv'] == make_ipkernel_cmd()
assert d['display_name'] == 'Python %i (ipykernel)' % sys.version_info[0]
assert d['language'] == 'python'
def test_get_kernel_dict():
d = get_kernel_dict()
assert_kernel_dict(d)
def assert_kernel_dict_with_profile(d):
nt.assert_equal(d['argv'], make_ipkernel_cmd(
extra_arguments=["--profile", "test"]))
assert d['display_name'] == 'Python %i (ipykernel)' % sys.version_info[0]
assert d['language'] == 'python'
def test_get_kernel_dict_with_profile():
d = get_kernel_dict(["--profile", "test"])
assert_kernel_dict_with_profile(d)
def assert_is_spec(path):
for fname in os.listdir(RESOURCES):
dst = pjoin(path, fname)
assert os.path.exists(dst)
kernel_json = pjoin(path, 'kernel.json')
assert os.path.exists(kernel_json)
with io.open(kernel_json, encoding='utf8') as f:
json.load(f)
def test_write_kernel_spec():
path = write_kernel_spec()
assert_is_spec(path)
shutil.rmtree(path)
def test_write_kernel_spec_path():
path = os.path.join(tempfile.mkdtemp(), KERNEL_NAME)
path2 = write_kernel_spec(path)
assert path == path2
assert_is_spec(path)
shutil.rmtree(path)
def test_install_kernelspec():
path = tempfile.mkdtemp()
try:
test = InstallIPythonKernelSpecApp.launch_instance(argv=['--prefix', path])
assert_is_spec(os.path.join(
path, 'share', 'jupyter', 'kernels', KERNEL_NAME))
finally:
shutil.rmtree(path)
def test_install_user():
tmp = tempfile.mkdtemp()
with mock.patch.dict(os.environ, {'HOME': tmp}):
install(user=True)
data_dir = jupyter_data_dir()
assert_is_spec(os.path.join(data_dir, 'kernels', KERNEL_NAME))
def test_install():
system_jupyter_dir = tempfile.mkdtemp()
with mock.patch('jupyter_client.kernelspec.SYSTEM_JUPYTER_PATH',
[system_jupyter_dir]):
install()
assert_is_spec(os.path.join(system_jupyter_dir, 'kernels', KERNEL_NAME))
def test_install_profile():
system_jupyter_dir = tempfile.mkdtemp()
with mock.patch('jupyter_client.kernelspec.SYSTEM_JUPYTER_PATH',
[system_jupyter_dir]):
install(profile="Test")
spec = os.path.join(system_jupyter_dir, 'kernels', KERNEL_NAME, "kernel.json")
with open(spec) as f:
spec = json.load(f)
assert spec["display_name"].endswith(" [profile=Test]")
nt.assert_equal(spec["argv"][-2:], ["--profile", "Test"])
def test_install_display_name_overrides_profile():
system_jupyter_dir = tempfile.mkdtemp()
with mock.patch('jupyter_client.kernelspec.SYSTEM_JUPYTER_PATH',
[system_jupyter_dir]):
install(display_name="Display", profile="Test")
spec = os.path.join(system_jupyter_dir, 'kernels', KERNEL_NAME, "kernel.json")
with open(spec) as f:
spec = json.load(f)
assert spec["display_name"] == "Display"
@pytest.mark.parametrize("env", [
None,
dict(spam="spam"),
dict(spam="spam", foo='bar')
])
def test_install_env(tmp_path, env):
# python 3.5 // tmp_path must be converted to str
with mock.patch('jupyter_client.kernelspec.SYSTEM_JUPYTER_PATH',
[str(tmp_path)]):
install(env=env)
spec = tmp_path / 'kernels' / KERNEL_NAME / "kernel.json"
with spec.open() as f:
spec = json.load(f)
if env:
assert len(env) == len(spec['env'])
for k, v in env.items():
assert spec['env'][k] == v
else:
assert 'env' not in spec