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"""A library of helper functions for the Cheroot test suite."""
import datetime
import logging
import os
import sys
import time
import threading
import types
import http.client
import cheroot.server
import cheroot.wsgi
from cheroot.test import webtest
log = logging.getLogger(__name__)
thisdir = os.path.abspath(os.path.dirname(__file__))
config = {
'bind_addr': ('127.0.0.1', 54583),
'server': 'wsgi',
'wsgi_app': None,
}
class CherootWebCase(webtest.WebCase):
"""Helper class for a web app test suite."""
script_name = ''
scheme = 'http'
available_servers = {
'wsgi': cheroot.wsgi.Server,
'native': cheroot.server.HTTPServer,
}
@classmethod
def setup_class(cls):
"""Create and run one HTTP server per class."""
conf = config.copy()
conf.update(getattr(cls, 'config', {}))
s_class = conf.pop('server', 'wsgi')
server_factory = cls.available_servers.get(s_class)
if server_factory is None:
raise RuntimeError('Unknown server in config: %s' % conf['server'])
cls.httpserver = server_factory(**conf)
cls.HOST, cls.PORT = cls.httpserver.bind_addr
if cls.httpserver.ssl_adapter is None:
ssl = ''
cls.scheme = 'http'
else:
ssl = ' (ssl)'
cls.HTTP_CONN = http.client.HTTPSConnection
cls.scheme = 'https'
v = sys.version.split()[0]
log.info('Python version used to run this test script: %s', v)
log.info('Cheroot version: %s', cheroot.__version__)
log.info('HTTP server version: %s%s', cls.httpserver.protocol, ssl)
log.info('PID: %s', os.getpid())
if hasattr(cls, 'setup_server'):
# Clear the wsgi server so that
# it can be updated with the new root
cls.setup_server()
cls.start()
@classmethod
def teardown_class(cls):
"""Cleanup HTTP server."""
if hasattr(cls, 'setup_server'):
cls.stop()
@classmethod
def start(cls):
"""Load and start the HTTP server."""
threading.Thread(target=cls.httpserver.safe_start).start()
while not cls.httpserver.ready:
time.sleep(0.1)
@classmethod
def stop(cls):
"""Terminate HTTP server."""
cls.httpserver.stop()
td = getattr(cls, 'teardown', None)
if td:
td()
date_tolerance = 2
def assertEqualDates(self, dt1, dt2, seconds=None):
"""Assert ``abs(dt1 - dt2)`` is within ``Y`` seconds."""
if seconds is None:
seconds = self.date_tolerance
if dt1 > dt2:
diff = dt1 - dt2
else:
diff = dt2 - dt1
if not diff < datetime.timedelta(seconds=seconds):
raise AssertionError(
'%r and %r are not within %r seconds.' %
(dt1, dt2, seconds),
)
class Request:
"""HTTP request container."""
def __init__(self, environ):
"""Initialize HTTP request."""
self.environ = environ
class Response:
"""HTTP response container."""
def __init__(self):
"""Initialize HTTP response."""
self.status = '200 OK'
self.headers = {'Content-Type': 'text/html'}
self.body = None
def output(self):
"""Generate iterable response body object."""
if self.body is None:
return []
elif isinstance(self.body, str):
return [self.body.encode('iso-8859-1')]
elif isinstance(self.body, bytes):
return [self.body]
else:
return [x.encode('iso-8859-1') for x in self.body]
class Controller:
"""WSGI app for tests."""
def __call__(self, environ, start_response):
"""WSGI request handler."""
req, resp = Request(environ), Response()
try:
# Python 3 supports unicode attribute names
# Python 2 encodes them
handler = self.handlers[environ['PATH_INFO']]
except KeyError:
resp.status = '404 Not Found'
else:
output = handler(req, resp)
if (
output is not None
and not any(
resp.status.startswith(status_code)
for status_code in ('204', '304')
)
):
resp.body = output
try:
resp.headers.setdefault('Content-Length', str(len(output)))
except TypeError:
if not isinstance(output, types.GeneratorType):
raise
start_response(resp.status, resp.headers.items())
return resp.output()
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