"""\
@file greenio_test.py

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.
"""

from eventlet import tests
from eventlet import api, greenio, util
import socket

# TODO try and reuse unit tests from within Python itself

class TestGreenIo(tests.TestCase):
    def test_close_with_makefile(self):
        def accept_close_early(listener):
            # verify that the makefile and the socket are truly independent
            # by closing the socket prior to using the made file
            try:
                conn, addr = listener.accept()
                fd = conn.makefile()
                conn.close()
                fd.write('hello\n')
                fd.close()
                self.assertRaises(socket.error, fd.write, 'a')
                self.assertRaises(socket.error, conn.send, 'b')
            finally:
                listener.close()

        def accept_close_late(listener):
            # verify that the makefile and the socket are truly independent
            # by closing the made file and then sending a character
            try:
                conn, addr = listener.accept()
                fd = conn.makefile()
                fd.write('hello')
                fd.close()
                conn.send('\n')
                conn.close()
                self.assertRaises(socket.error, fd.write, 'a')
                self.assertRaises(socket.error, conn.send, 'b')
            finally:
                listener.close()
                
        def did_it_work(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()
            
        server = api.tcp_listener(('0.0.0.0', 0))
        killer = api.spawn(accept_close_early, server)
        did_it_work(server)
        api.kill(killer)
        
        server = api.tcp_listener(('0.0.0.0', 0))
        killer = api.spawn(accept_close_late, server)
        did_it_work(server)
        api.kill(killer)

        
    def test_del_closes_socket(self):
        timer = api.exc_after(0.5, api.TimeoutError)
        def accept_once(listener):
            # delete/overwrite the original conn
            # object, only keeping the file object around
            # closing the file object should close everything
            try:
                conn, addr = listener.accept()
                conn = conn.makefile()
                conn.write('hello\n')
                conn.close()
                self.assertRaises(socket.error, conn.write, 'a')
            finally:
                listener.close()
        server = api.tcp_listener(('0.0.0.0', 0))
        killer = api.spawn(accept_once, server)
        client = api.connect_tcp(('127.0.0.1', server.getsockname()[1]))
        fd = client.makefile()
        client.close()
        assert fd.read() == 'hello\n'    
        assert fd.read() == ''
        
        timer.cancel()
                
if __name__ == '__main__':
    tests.main()
