deb-python-eventlet/eventlet/api_test.py

"""\
@file api_test.py
@author Donovan Preston

Copyright (c) 2006-2007, Linden Research, Inc.
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.
"""

import os
import socket

from eventlet import api
from eventlet import greenio
from eventlet import tests
from eventlet import util


def check_hub():
    # Clear through the descriptor queue
    api.sleep(0)
    api.sleep(0)
    hub = api.get_hub()
    for nm in 'readers', 'writers', 'excs':
        dct = getattr(hub, nm)
        assert not dct, "hub.%s not empty: %s" % (nm, dct)
    # Stop the runloop
    api.get_hub().abort()
    api.sleep(0)
    assert not api.get_hub().running


class TestApi(tests.TestCase):
    mode = 'static'

    certificate_file = os.path.join(os.path.dirname(__file__), 'test_server.crt') 
    private_key_file = os.path.join(os.path.dirname(__file__), 'test_server.key')

    def test_tcp_listener(self):
        socket = api.tcp_listener(('0.0.0.0', 0))
        assert socket.getsockname()[0] == '0.0.0.0'
        socket.close()

        check_hub()

    def test_connect_tcp(self):
        def accept_once(listenfd):
            try:
                conn, addr = listenfd.accept()
                fd = conn.makefile()
                conn.close()
                fd.write('hello\n')
                fd.close()
            finally:
                listenfd.close()

        server = api.tcp_listener(('0.0.0.0', 0))
        api.spawn(accept_once, server)

        client = api.connect_tcp(('127.0.0.1', server.getsockname()[1]))
        fd = client.makefile()
        client.close()
        assert fd.readline() == 'hello\n'

        assert fd.read() == ''
        fd.close()

        check_hub()

    def test_connect_ssl(self): 
        def accept_once(listenfd): 
            try: 
                conn, addr = listenfd.accept()
                fl = conn.makefile('w')
                fl.write('hello\r\n')
                fl.close()
                conn.close() 
            finally: 
                listenfd.close() 
 
        server = api.ssl_listener(('0.0.0.0', 0),  
                                  self.certificate_file,  
                                  self.private_key_file) 
        api.spawn(accept_once, server) 
 
        client = util.wrap_ssl( 
            api.connect_tcp(('127.0.0.1', server.getsockname()[1])))
        client = client.makefile()

        assert client.readline() == 'hello\r\n' 
        assert client.read() == '' 
        client.close()

    def test_server(self):
        connected = []
        server = api.tcp_listener(('0.0.0.0', 0))
        bound_port = server.getsockname()[1]

        def accept_twice((conn, addr)):
            connected.append(True)
            conn.close()
            if len(connected) == 2:
                server.close()

        api.call_after(0, api.connect_tcp, ('127.0.0.1', bound_port))
        api.call_after(0, api.connect_tcp, ('127.0.0.1', bound_port))
        api.tcp_server(server, accept_twice)

        assert len(connected) == 2

        check_hub()

    def test_001_trampoline_timeout(self):
        server = api.tcp_listener(('0.0.0.0', 0))
        bound_port = server.getsockname()[1]

        try:
            desc = greenio.GreenSocket(util.tcp_socket())
            api.trampoline(desc, read=True, write=True, timeout=0.1)
        except api.TimeoutError:
            pass # test passed
        else:
            assert False, "Didn't timeout"

        check_hub()

    def test_timeout_cancel(self):
        server = api.tcp_listener(('0.0.0.0', 0))
        bound_port = server.getsockname()[1]

        def client_connected((conn, addr)):
            conn.close()

        def go():
            client = util.tcp_socket()

            desc = greenio.GreenSocket(client)
            desc.connect(('127.0.0.1', bound_port))
            try:
                api.trampoline(desc, read=True, write=True, timeout=0.1)
            except api.TimeoutError:
                assert False, "Timed out"

            server.close()
            client.close()

        api.call_after(0, go)

        api.tcp_server(server, client_connected)

        check_hub()

    def test_explicit_hub(self):
        api.use_hub(Foo)
        assert isinstance(api.get_hub(), Foo), api.get_hub()

        api.use_hub(api.get_default_hub())

        check_hub()

    def test_named(self):
        named_foo = api.named('api_test.Foo')
        self.assertEquals(
            named_foo.__name__,
            "Foo")

    def test_naming_missing_class(self):
        self.assertRaises(
            ImportError, api.named, 'this_name_should_hopefully_not_exist.Foo')


class Foo(object):
    pass


if __name__ == '__main__':
    tests.main()