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'''
PEXPECT LICENSE
This license is approved by the OSI and FSF as GPL-compatible.
http://opensource.org/licenses/isc-license.txt
Copyright (c) 2012, Noah Spurrier <noah@noah.org>
PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
'''
from __future__ import print_function
import contextlib
import unittest
import signal
import sys
import os
class PexpectTestCase(unittest.TestCase):
def setUp(self):
self.PYTHONBIN = sys.executable
self.original_path = os.getcwd()
tests_dir = os.path.dirname(__file__)
self.project_dir = project_dir = os.path.dirname(tests_dir)
# all tests are executed in this folder; there are many auxiliary
# programs in this folder executed by spawn().
os.chdir(tests_dir)
# If the pexpect raises an exception after fork(), but before
# exec(), our test runner *also* forks. We prevent this by
# storing our pid and asserting equality on tearDown.
self.pid = os.getpid()
coverage_rc = os.path.join(project_dir, '.coveragerc')
os.environ['COVERAGE_PROCESS_START'] = coverage_rc
os.environ['COVERAGE_FILE'] = os.path.join(project_dir, '.coverage')
print('\n', self.id(), end=' ')
sys.stdout.flush()
if sys.platform != 'win32':
# some build agents will ignore SIGHUP and SIGINT, which python
# inherits. This causes some of the tests related to terminate()
# to fail. We set them to the default handlers that they should
# be, and restore them back to their SIG_IGN value on tearDown.
#
# I'm not entirely convinced they need to be restored, only our
# test runner is affected.
self.restore_ignored_signals = [
value for value in (signal.SIGHUP, signal.SIGINT,)
if signal.getsignal(value) == signal.SIG_IGN]
if signal.SIGHUP in self.restore_ignored_signals:
# sighup should be set to default handler
signal.signal(signal.SIGHUP, signal.SIG_DFL)
if signal.SIGINT in self.restore_ignored_signals:
# SIGINT should be set to signal.default_int_handler
signal.signal(signal.SIGINT, signal.default_int_handler)
else:
self.restore_ignored_signals = []
unittest.TestCase.setUp(self)
def tearDown(self):
# restore original working folder
os.chdir(self.original_path)
if self.pid != os.getpid():
# The build server pattern-matches phrase 'Test runner has forked!'
print("Test runner has forked! This means a child process raised "
"an exception before exec() in a test case, the error is "
"more than likely found above this line in stderr.",
file=sys.stderr)
exit(1)
# restore signal handlers
for signal_value in self.restore_ignored_signals:
signal.signal(signal_value, signal.SIG_IGN)
if sys.version_info < (2, 7):
# We want to use these methods, which are new/improved in 2.7, but
# we are still supporting 2.6 for the moment. This section can be
# removed when we drop Python 2.6 support.
@contextlib.contextmanager
def assertRaises(self, excClass):
try:
yield
except Exception as e:
assert isinstance(e, excClass)
else:
raise AssertionError("%s was not raised" % excClass)
@contextlib.contextmanager
def assertRaisesRegex(self, excClass, pattern):
import re
try:
yield
except Exception as e:
assert isinstance(e, excClass)
assert re.match(pattern, str(e))
else:
raise AssertionError("%s was not raised" % excClass)
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