# Copyright (c) 2008-2009 AG Projects
# Author: Denis Bilenko
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

# package is named greentest, not test, so it won't be confused with test in stdlib
import sys
import os
import errno
import unittest

disabled_marker = '-*-*-*-*-*- disabled -*-*-*-*-*-'
def exit_disabled():
    sys.exit(disabled_marker)

def exit_unless_twisted():
    from eventlib.api import get_hub
    if 'Twisted' not in type(get_hub()).__name__:
        exit_disabled()

def exit_unless_25():
    if sys.version_info[:2]<(2, 5):
        exit_disabled()

class LimitedTestCase(unittest.TestCase):

    def setUp(self):
        from eventlib import api
        self.timer = api.exc_after(1, RuntimeError('test is taking too long'))

    def tearDown(self):
        self.timer.cancel()

def find_command(command):
    for dir in os.getenv('PATH', '/usr/bin:/usr/sbin').split(os.pathsep):
        p = os.path.join(dir, command)
        if os.access(p, os.X_OK):
            return p
    raise IOError(errno.ENOENT, 'Command not found: %r' % command)