382 lines
12 KiB
Python
382 lines
12 KiB
Python
# coding: utf-8
|
|
"""test the IPython Kernel"""
|
|
|
|
# Copyright (c) IPython Development Team.
|
|
# Distributed under the terms of the Modified BSD License.
|
|
|
|
import ast
|
|
import io
|
|
import os.path
|
|
import sys
|
|
import time
|
|
|
|
import nose.tools as nt
|
|
from flaky import flaky
|
|
|
|
from IPython.testing import decorators as dec, tools as tt
|
|
from ipython_genutils import py3compat
|
|
from IPython.paths import locate_profile
|
|
from ipython_genutils.tempdir import TemporaryDirectory
|
|
|
|
from .utils import (
|
|
new_kernel, kernel, TIMEOUT, assemble_output, execute,
|
|
flush_channels, wait_for_idle,
|
|
)
|
|
|
|
|
|
def _check_master(kc, expected=True, stream="stdout"):
|
|
execute(kc=kc, code="import sys")
|
|
flush_channels(kc)
|
|
msg_id, content = execute(kc=kc, code="print (sys.%s._is_master_process())" % stream)
|
|
stdout, stderr = assemble_output(kc.iopub_channel)
|
|
assert stdout.strip() == repr(expected)
|
|
|
|
|
|
def _check_status(content):
|
|
"""If status=error, show the traceback"""
|
|
if content['status'] == 'error':
|
|
assert False, ''.join(['\n'] + content['traceback'])
|
|
|
|
|
|
# printing tests
|
|
|
|
def test_simple_print():
|
|
"""simple print statement in kernel"""
|
|
with kernel() as kc:
|
|
iopub = kc.iopub_channel
|
|
msg_id, content = execute(kc=kc, code="print ('hi')")
|
|
stdout, stderr = assemble_output(iopub)
|
|
assert stdout == 'hi\n'
|
|
assert stderr == ''
|
|
_check_master(kc, expected=True)
|
|
|
|
|
|
def test_sys_path():
|
|
"""test that sys.path doesn't get messed up by default"""
|
|
with kernel() as kc:
|
|
msg_id, content = execute(kc=kc, code="import sys; print(repr(sys.path))")
|
|
stdout, stderr = assemble_output(kc.iopub_channel)
|
|
# for error-output on failure
|
|
sys.stderr.write(stderr)
|
|
|
|
sys_path = ast.literal_eval(stdout.strip())
|
|
assert '' in sys_path
|
|
|
|
|
|
def test_sys_path_profile_dir():
|
|
"""test that sys.path doesn't get messed up when `--profile-dir` is specified"""
|
|
|
|
with new_kernel(['--profile-dir', locate_profile('default')]) as kc:
|
|
msg_id, content = execute(kc=kc, code="import sys; print(repr(sys.path))")
|
|
stdout, stderr = assemble_output(kc.iopub_channel)
|
|
# for error-output on failure
|
|
sys.stderr.write(stderr)
|
|
|
|
sys_path = ast.literal_eval(stdout.strip())
|
|
assert '' in sys_path
|
|
|
|
|
|
@flaky(max_runs=3)
|
|
@dec.skipif(sys.platform == 'win32', "subprocess prints fail on Windows")
|
|
def test_subprocess_print():
|
|
"""printing from forked mp.Process"""
|
|
with new_kernel() as kc:
|
|
iopub = kc.iopub_channel
|
|
|
|
_check_master(kc, expected=True)
|
|
flush_channels(kc)
|
|
np = 5
|
|
code = '\n'.join([
|
|
"from __future__ import print_function",
|
|
"import time",
|
|
"import multiprocessing as mp",
|
|
"pool = [mp.Process(target=print, args=('hello', i,)) for i in range(%i)]" % np,
|
|
"for p in pool: p.start()",
|
|
"for p in pool: p.join()",
|
|
"time.sleep(0.5),"
|
|
])
|
|
|
|
msg_id, content = execute(kc=kc, code=code)
|
|
stdout, stderr = assemble_output(iopub)
|
|
nt.assert_equal(stdout.count("hello"), np, stdout)
|
|
for n in range(np):
|
|
nt.assert_equal(stdout.count(str(n)), 1, stdout)
|
|
assert stderr == ''
|
|
_check_master(kc, expected=True)
|
|
_check_master(kc, expected=True, stream="stderr")
|
|
|
|
|
|
@flaky(max_runs=3)
|
|
def test_subprocess_noprint():
|
|
"""mp.Process without print doesn't trigger iostream mp_mode"""
|
|
with kernel() as kc:
|
|
iopub = kc.iopub_channel
|
|
|
|
np = 5
|
|
code = '\n'.join([
|
|
"import multiprocessing as mp",
|
|
"pool = [mp.Process(target=range, args=(i,)) for i in range(%i)]" % np,
|
|
"for p in pool: p.start()",
|
|
"for p in pool: p.join()"
|
|
])
|
|
|
|
msg_id, content = execute(kc=kc, code=code)
|
|
stdout, stderr = assemble_output(iopub)
|
|
assert stdout == ''
|
|
assert stderr == ''
|
|
|
|
_check_master(kc, expected=True)
|
|
_check_master(kc, expected=True, stream="stderr")
|
|
|
|
|
|
@flaky(max_runs=3)
|
|
@dec.skipif(sys.platform == 'win32', "subprocess prints fail on Windows")
|
|
def test_subprocess_error():
|
|
"""error in mp.Process doesn't crash"""
|
|
with new_kernel() as kc:
|
|
iopub = kc.iopub_channel
|
|
|
|
code = '\n'.join([
|
|
"import multiprocessing as mp",
|
|
"p = mp.Process(target=int, args=('hi',))",
|
|
"p.start()",
|
|
"p.join()",
|
|
])
|
|
|
|
msg_id, content = execute(kc=kc, code=code)
|
|
stdout, stderr = assemble_output(iopub)
|
|
assert stdout == ''
|
|
assert "ValueError" in stderr
|
|
|
|
_check_master(kc, expected=True)
|
|
_check_master(kc, expected=True, stream="stderr")
|
|
|
|
# raw_input tests
|
|
|
|
def test_raw_input():
|
|
"""test [raw_]input"""
|
|
with kernel() as kc:
|
|
iopub = kc.iopub_channel
|
|
|
|
input_f = "input" if py3compat.PY3 else "raw_input"
|
|
theprompt = "prompt> "
|
|
code = 'print({input_f}("{theprompt}"))'.format(**locals())
|
|
msg_id = kc.execute(code, allow_stdin=True)
|
|
msg = kc.get_stdin_msg(block=True, timeout=TIMEOUT)
|
|
assert msg['header']['msg_type'] == u'input_request'
|
|
content = msg['content']
|
|
assert content['prompt'] == theprompt
|
|
text = "some text"
|
|
kc.input(text)
|
|
reply = kc.get_shell_msg(block=True, timeout=TIMEOUT)
|
|
assert reply['content']['status'] == 'ok'
|
|
stdout, stderr = assemble_output(iopub)
|
|
assert stdout == text + "\n"
|
|
|
|
|
|
@dec.skipif(py3compat.PY3)
|
|
def test_eval_input():
|
|
"""test input() on Python 2"""
|
|
with kernel() as kc:
|
|
iopub = kc.iopub_channel
|
|
|
|
input_f = "input" if py3compat.PY3 else "raw_input"
|
|
theprompt = "prompt> "
|
|
code = 'print(input("{theprompt}"))'.format(**locals())
|
|
msg_id = kc.execute(code, allow_stdin=True)
|
|
msg = kc.get_stdin_msg(block=True, timeout=TIMEOUT)
|
|
assert msg['header']['msg_type'] == u'input_request'
|
|
content = msg['content']
|
|
assert content['prompt'] == theprompt
|
|
kc.input("1+1")
|
|
reply = kc.get_shell_msg(block=True, timeout=TIMEOUT)
|
|
assert reply['content']['status'] == 'ok'
|
|
stdout, stderr = assemble_output(iopub)
|
|
assert stdout == "2\n"
|
|
|
|
|
|
def test_save_history():
|
|
# Saving history from the kernel with %hist -f was failing because of
|
|
# unicode problems on Python 2.
|
|
with kernel() as kc, TemporaryDirectory() as td:
|
|
file = os.path.join(td, 'hist.out')
|
|
execute(u'a=1', kc=kc)
|
|
wait_for_idle(kc)
|
|
execute(u'b=u"abcþ"', kc=kc)
|
|
wait_for_idle(kc)
|
|
_, reply = execute("%hist -f " + file, kc=kc)
|
|
assert reply['status'] == 'ok'
|
|
with io.open(file, encoding='utf-8') as f:
|
|
content = f.read()
|
|
assert u'a=1' in content
|
|
assert u'b=u"abcþ"' in content
|
|
|
|
|
|
@dec.skip_without('faulthandler')
|
|
def test_smoke_faulthandler():
|
|
with kernel() as kc:
|
|
# Note: faulthandler.register is not available on windows.
|
|
code = u'\n'.join([
|
|
'import sys',
|
|
'import faulthandler',
|
|
'import signal',
|
|
'faulthandler.enable()',
|
|
'if not sys.platform.startswith("win32"):',
|
|
' faulthandler.register(signal.SIGTERM)'])
|
|
_, reply = execute(code, kc=kc)
|
|
nt.assert_equal(reply['status'], 'ok', reply.get('traceback', ''))
|
|
|
|
|
|
def test_help_output():
|
|
"""ipython kernel --help-all works"""
|
|
tt.help_all_output_test('kernel')
|
|
|
|
|
|
def test_is_complete():
|
|
with kernel() as kc:
|
|
# There are more test cases for this in core - here we just check
|
|
# that the kernel exposes the interface correctly.
|
|
kc.is_complete('2+2')
|
|
reply = kc.get_shell_msg(block=True, timeout=TIMEOUT)
|
|
assert reply['content']['status'] == 'complete'
|
|
|
|
# SyntaxError
|
|
kc.is_complete('raise = 2')
|
|
reply = kc.get_shell_msg(block=True, timeout=TIMEOUT)
|
|
assert reply['content']['status'] == 'invalid'
|
|
|
|
kc.is_complete('a = [1,\n2,')
|
|
reply = kc.get_shell_msg(block=True, timeout=TIMEOUT)
|
|
assert reply['content']['status'] == 'incomplete'
|
|
assert reply['content']['indent'] == ''
|
|
|
|
# Cell magic ends on two blank lines for console UIs
|
|
kc.is_complete('%%timeit\na\n\n')
|
|
reply = kc.get_shell_msg(block=True, timeout=TIMEOUT)
|
|
assert reply['content']['status'] == 'complete'
|
|
|
|
|
|
@dec.skipif(sys.platform != 'win32', "only run on Windows")
|
|
def test_complete():
|
|
with kernel() as kc:
|
|
execute(u'a = 1', kc=kc)
|
|
wait_for_idle(kc)
|
|
cell = 'import IPython\nb = a.'
|
|
kc.complete(cell)
|
|
reply = kc.get_shell_msg(block=True, timeout=TIMEOUT)
|
|
|
|
c = reply['content']
|
|
assert c['status'] == 'ok'
|
|
start = cell.find('a.')
|
|
end = start + 2
|
|
assert c['cursor_end'] == cell.find('a.') + 2
|
|
assert c['cursor_start'] <= end
|
|
|
|
# there are many right answers for cursor_start,
|
|
# so verify application of the completion
|
|
# rather than the value of cursor_start
|
|
|
|
matches = c['matches']
|
|
assert matches
|
|
for m in matches:
|
|
completed = cell[:c['cursor_start']] + m
|
|
assert completed.startswith(cell)
|
|
|
|
|
|
@dec.skip_without('matplotlib')
|
|
def test_matplotlib_inline_on_import():
|
|
with kernel() as kc:
|
|
cell = '\n'.join([
|
|
'import matplotlib, matplotlib.pyplot as plt',
|
|
'backend = matplotlib.get_backend()'
|
|
])
|
|
_, reply = execute(cell,
|
|
user_expressions={'backend': 'backend'},
|
|
kc=kc)
|
|
_check_status(reply)
|
|
backend_bundle = reply['user_expressions']['backend']
|
|
_check_status(backend_bundle)
|
|
assert 'backend_inline' in backend_bundle['data']['text/plain']
|
|
|
|
|
|
def test_message_order():
|
|
N = 100 # number of messages to test
|
|
with kernel() as kc:
|
|
_, reply = execute("a = 1", kc=kc)
|
|
_check_status(reply)
|
|
offset = reply['execution_count'] + 1
|
|
cell = "a += 1\na"
|
|
msg_ids = []
|
|
# submit N executions as fast as we can
|
|
for i in range(N):
|
|
msg_ids.append(kc.execute(cell))
|
|
# check message-handling order
|
|
for i, msg_id in enumerate(msg_ids, offset):
|
|
reply = kc.get_shell_msg(timeout=TIMEOUT)
|
|
_check_status(reply['content'])
|
|
assert reply['content']['execution_count'] == i
|
|
assert reply['parent_header']['msg_id'] == msg_id
|
|
|
|
|
|
@dec.skipif(sys.platform.startswith('linux'))
|
|
def test_unc_paths():
|
|
with kernel() as kc, TemporaryDirectory() as td:
|
|
drive_file_path = os.path.join(td, 'unc.txt')
|
|
with open(drive_file_path, 'w+') as f:
|
|
f.write('# UNC test')
|
|
unc_root = '\\\\localhost\\C$'
|
|
file_path = os.path.splitdrive(os.path.dirname(drive_file_path))[1]
|
|
unc_file_path = os.path.join(unc_root, file_path[1:])
|
|
|
|
iopub = kc.iopub_channel
|
|
|
|
kc.execute("cd {0:s}".format(unc_file_path))
|
|
reply = kc.get_shell_msg(block=True, timeout=TIMEOUT)
|
|
assert reply['content']['status'] == 'ok'
|
|
out, err = assemble_output(iopub)
|
|
assert unc_file_path in out
|
|
|
|
flush_channels(kc)
|
|
kc.execute(code="ls")
|
|
reply = kc.get_shell_msg(block=True, timeout=TIMEOUT)
|
|
assert reply['content']['status'] == 'ok'
|
|
out, err = assemble_output(iopub)
|
|
assert 'unc.txt' in out
|
|
|
|
kc.execute(code="cd")
|
|
reply = kc.get_shell_msg(block=True, timeout=TIMEOUT)
|
|
assert reply['content']['status'] == 'ok'
|
|
|
|
|
|
def test_shutdown():
|
|
"""Kernel exits after polite shutdown_request"""
|
|
with new_kernel() as kc:
|
|
km = kc.parent
|
|
execute(u'a = 1', kc=kc)
|
|
wait_for_idle(kc)
|
|
kc.shutdown()
|
|
for i in range(300): # 30s timeout
|
|
if km.is_alive():
|
|
time.sleep(.1)
|
|
else:
|
|
break
|
|
assert not km.is_alive()
|
|
|
|
|
|
def test_interrupt_during_input():
|
|
"""
|
|
The kernel exits after being interrupted while waiting in input().
|
|
|
|
input() appears to have issues other functions don't, and it needs to be
|
|
interruptible in order for pdb to be interruptible.
|
|
"""
|
|
with new_kernel() as kc:
|
|
km = kc.parent
|
|
msg_id = kc.execute("input()")
|
|
time.sleep(1) # Make sure it's actually waiting for input.
|
|
km.interrupt_kernel()
|
|
# If we failed to interrupt interrupt, this will timeout:
|
|
reply = kc.get_shell_msg(timeout=TIMEOUT)
|
|
from .test_message_spec import validate_message
|
|
validate_message(reply, 'execute_reply', msg_id)
|