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# encoding: utf-8
"""
Tests for platutils.py
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2008-2011 The IPython Development Team
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
import sys
import signal
import os
import time
from _thread import interrupt_main # Py 3
import threading
from unittest import SkipTest
import nose.tools as nt
from IPython.utils.process import (find_cmd, FindCmdError, arg_split,
system, getoutput, getoutputerror,
get_output_error_code)
from IPython.utils.capture import capture_output
from IPython.testing import decorators as dec
from IPython.testing import tools as tt
python = os.path.basename(sys.executable)
#-----------------------------------------------------------------------------
# Tests
#-----------------------------------------------------------------------------
@dec.skip_win32
def test_find_cmd_ls():
"""Make sure we can find the full path to ls."""
path = find_cmd('ls')
nt.assert_true(path.endswith('ls'))
def has_pywin32():
try:
import win32api
except ImportError:
return False
return True
@dec.onlyif(has_pywin32, "This test requires win32api to run")
def test_find_cmd_pythonw():
"""Try to find pythonw on Windows."""
path = find_cmd('pythonw')
assert path.lower().endswith('pythonw.exe'), path
@dec.onlyif(lambda : sys.platform != 'win32' or has_pywin32(),
"This test runs on posix or in win32 with win32api installed")
def test_find_cmd_fail():
"""Make sure that FindCmdError is raised if we can't find the cmd."""
nt.assert_raises(FindCmdError,find_cmd,'asdfasdf')
@dec.skip_win32
def test_arg_split():
"""Ensure that argument lines are correctly split like in a shell."""
tests = [['hi', ['hi']],
[u'hi', [u'hi']],
['hello there', ['hello', 'there']],
# \u01ce == \N{LATIN SMALL LETTER A WITH CARON}
# Do not use \N because the tests crash with syntax error in
# some cases, for example windows python2.6.
[u'h\u01cello', [u'h\u01cello']],
['something "with quotes"', ['something', '"with quotes"']],
]
for argstr, argv in tests:
nt.assert_equal(arg_split(argstr), argv)
@dec.skip_if_not_win32
def test_arg_split_win32():
"""Ensure that argument lines are correctly split like in a shell."""
tests = [['hi', ['hi']],
[u'hi', [u'hi']],
['hello there', ['hello', 'there']],
[u'h\u01cello', [u'h\u01cello']],
['something "with quotes"', ['something', 'with quotes']],
]
for argstr, argv in tests:
nt.assert_equal(arg_split(argstr), argv)
class SubProcessTestCase(tt.TempFileMixin):
def setUp(self):
"""Make a valid python temp file."""
lines = [ "import sys",
"print('on stdout', end='', file=sys.stdout)",
"print('on stderr', end='', file=sys.stderr)",
"sys.stdout.flush()",
"sys.stderr.flush()"]
self.mktmp('\n'.join(lines))
def test_system(self):
status = system('%s "%s"' % (python, self.fname))
self.assertEqual(status, 0)
def test_system_quotes(self):
status = system('%s -c "import sys"' % python)
self.assertEqual(status, 0)
def assert_interrupts(self, command):
"""
Interrupt a subprocess after a second.
"""
if threading.main_thread() != threading.current_thread():
raise nt.SkipTest("Can't run this test if not in main thread.")
# Some tests can overwrite SIGINT handler (by using pdb for example),
# which then breaks this test, so just make sure it's operating
# normally.
signal.signal(signal.SIGINT, signal.default_int_handler)
def interrupt():
# Wait for subprocess to start:
time.sleep(0.5)
interrupt_main()
threading.Thread(target=interrupt).start()
start = time.time()
try:
result = command()
except KeyboardInterrupt:
# Success!
pass
end = time.time()
self.assertTrue(
end - start < 2, "Process didn't die quickly: %s" % (end - start)
)
return result
def test_system_interrupt(self):
"""
When interrupted in the way ipykernel interrupts IPython, the
subprocess is interrupted.
"""
def command():
return system('%s -c "import time; time.sleep(5)"' % python)
status = self.assert_interrupts(command)
self.assertNotEqual(
status, 0, "The process wasn't interrupted. Status: %s" % (status,)
)
def test_getoutput(self):
out = getoutput('%s "%s"' % (python, self.fname))
# we can't rely on the order the line buffered streams are flushed
try:
self.assertEqual(out, 'on stderron stdout')
except AssertionError:
self.assertEqual(out, 'on stdouton stderr')
def test_getoutput_quoted(self):
out = getoutput('%s -c "print (1)"' % python)
self.assertEqual(out.strip(), '1')
#Invalid quoting on windows
@dec.skip_win32
def test_getoutput_quoted2(self):
out = getoutput("%s -c 'print (1)'" % python)
self.assertEqual(out.strip(), '1')
out = getoutput("%s -c 'print (\"1\")'" % python)
self.assertEqual(out.strip(), '1')
def test_getoutput_error(self):
out, err = getoutputerror('%s "%s"' % (python, self.fname))
self.assertEqual(out, 'on stdout')
self.assertEqual(err, 'on stderr')
def test_get_output_error_code(self):
quiet_exit = '%s -c "import sys; sys.exit(1)"' % python
out, err, code = get_output_error_code(quiet_exit)
self.assertEqual(out, '')
self.assertEqual(err, '')
self.assertEqual(code, 1)
out, err, code = get_output_error_code('%s "%s"' % (python, self.fname))
self.assertEqual(out, 'on stdout')
self.assertEqual(err, 'on stderr')
self.assertEqual(code, 0)
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