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"""Tests for two-process terminal frontend"""
# Copyright (c) Jupyter Development Team.
# Distributed under the terms of the Modified BSD License.
import os
import shutil
import sys
import tempfile
from subprocess import check_output
from flaky import flaky
import pytest
from traitlets.tests.utils import check_help_all_output
should_skip = sys.platform == "win32" or sys.version_info < (3,8) or sys.version_info[:2] == (3, 10) # noqa
@flaky
@pytest.mark.skipif(should_skip, reason="not supported")
def test_console_starts():
"""test that `jupyter console` starts a terminal"""
p, pexpect, t = start_console()
p.sendline("5")
p.expect([r"Out\[\d+\]: 5", pexpect.EOF], timeout=t)
p.expect([r"In \[\d+\]", pexpect.EOF], timeout=t)
stop_console(p, pexpect, t)
def test_help_output():
"""jupyter console --help-all works"""
check_help_all_output('jupyter_console')
@flaky
@pytest.mark.skipif(should_skip, reason="not supported")
def test_display_text():
"Ensure display protocol plain/text key is supported"
# equivalent of:
#
# x = %lsmagic
# from IPython.display import display; display(x);
p, pexpect, t = start_console()
p.sendline('x = %lsmagic')
p.expect(r'In \[\d+\]', timeout=t)
p.sendline('from IPython.display import display; display(x);')
p.expect(r'Available line magics:', timeout=t)
p.expect(r'In \[\d+\]', timeout=t)
stop_console(p, pexpect, t)
def stop_console(p, pexpect, t):
"Stop a running `jupyter console` running via pexpect"
# send ctrl-D;ctrl-D to exit
p.sendeof()
p.sendeof()
p.expect([pexpect.EOF, pexpect.TIMEOUT], timeout=t)
if p.isalive():
p.terminate()
def start_console():
"Start `jupyter console` using pexpect"
import pexpect
args = ['-m', 'jupyter_console', '--colors=NoColor']
cmd = sys.executable
env = os.environ.copy()
env["JUPYTER_CONSOLE_TEST"] = "1"
env["PROMPT_TOOLKIT_NO_CPR"] = "1"
try:
p = pexpect.spawn(cmd, args=args, env=env)
except IOError:
pytest.skip("Couldn't find command %s" % cmd)
# timeout after two minutes
t = 120
p.expect(r"In \[\d+\]", timeout=t)
return p, pexpect, t
def test_multiprocessing():
p, pexpect, t = start_console()
p.sendline('')
def test_generate_config():
"""jupyter console --generate-config works"""
td = tempfile.mkdtemp()
try:
check_output([sys.executable, '-m', 'jupyter_console', '--generate-config'],
env={'JUPYTER_CONFIG_DIR': td},
)
assert os.path.isfile(os.path.join(td, 'jupyter_console_config.py'))
finally:
shutil.rmtree(td)
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