mirror of https://github.com/python/cpython
288 lines
9.5 KiB
Python
288 lines
9.5 KiB
Python
# test asynchat
|
|
|
|
from test import support
|
|
|
|
# If this fails, the test will be skipped.
|
|
thread = support.import_module('_thread')
|
|
|
|
import asyncore, asynchat, socket, time
|
|
import unittest
|
|
import sys
|
|
try:
|
|
import threading
|
|
except ImportError:
|
|
threading = None
|
|
|
|
HOST = support.HOST
|
|
SERVER_QUIT = b'QUIT\n'
|
|
TIMEOUT = 3.0
|
|
|
|
if threading:
|
|
class echo_server(threading.Thread):
|
|
# parameter to determine the number of bytes passed back to the
|
|
# client each send
|
|
chunk_size = 1
|
|
|
|
def __init__(self, event):
|
|
threading.Thread.__init__(self)
|
|
self.event = event
|
|
self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
|
|
self.port = support.bind_port(self.sock)
|
|
# This will be set if the client wants us to wait before echoing data
|
|
# back.
|
|
self.start_resend_event = None
|
|
|
|
def run(self):
|
|
self.sock.listen(1)
|
|
self.event.set()
|
|
conn, client = self.sock.accept()
|
|
self.buffer = b""
|
|
# collect data until quit message is seen
|
|
while SERVER_QUIT not in self.buffer:
|
|
data = conn.recv(1)
|
|
if not data:
|
|
break
|
|
self.buffer = self.buffer + data
|
|
|
|
# remove the SERVER_QUIT message
|
|
self.buffer = self.buffer.replace(SERVER_QUIT, b'')
|
|
|
|
if self.start_resend_event:
|
|
self.start_resend_event.wait()
|
|
|
|
# re-send entire set of collected data
|
|
try:
|
|
# this may fail on some tests, such as test_close_when_done, since
|
|
# the client closes the channel when it's done sending
|
|
while self.buffer:
|
|
n = conn.send(self.buffer[:self.chunk_size])
|
|
time.sleep(0.001)
|
|
self.buffer = self.buffer[n:]
|
|
except:
|
|
pass
|
|
|
|
conn.close()
|
|
self.sock.close()
|
|
|
|
class echo_client(asynchat.async_chat):
|
|
|
|
def __init__(self, terminator, server_port):
|
|
asynchat.async_chat.__init__(self)
|
|
self.contents = []
|
|
self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
|
|
self.connect((HOST, server_port))
|
|
self.set_terminator(terminator)
|
|
self.buffer = b""
|
|
|
|
def handle_connect(self):
|
|
pass
|
|
|
|
if sys.platform == 'darwin':
|
|
# select.poll returns a select.POLLHUP at the end of the tests
|
|
# on darwin, so just ignore it
|
|
def handle_expt(self):
|
|
pass
|
|
|
|
def collect_incoming_data(self, data):
|
|
self.buffer += data
|
|
|
|
def found_terminator(self):
|
|
self.contents.append(self.buffer)
|
|
self.buffer = b""
|
|
|
|
def start_echo_server():
|
|
event = threading.Event()
|
|
s = echo_server(event)
|
|
s.start()
|
|
event.wait()
|
|
event.clear()
|
|
time.sleep(0.01) # Give server time to start accepting.
|
|
return s, event
|
|
|
|
|
|
@unittest.skipUnless(threading, 'Threading required for this test.')
|
|
class TestAsynchat(unittest.TestCase):
|
|
usepoll = False
|
|
|
|
def setUp (self):
|
|
self._threads = support.threading_setup()
|
|
|
|
def tearDown (self):
|
|
support.threading_cleanup(*self._threads)
|
|
|
|
def line_terminator_check(self, term, server_chunk):
|
|
event = threading.Event()
|
|
s = echo_server(event)
|
|
s.chunk_size = server_chunk
|
|
s.start()
|
|
event.wait()
|
|
event.clear()
|
|
time.sleep(0.01) # Give server time to start accepting.
|
|
c = echo_client(term, s.port)
|
|
c.push(b"hello ")
|
|
c.push(b"world" + term)
|
|
c.push(b"I'm not dead yet!" + term)
|
|
c.push(SERVER_QUIT)
|
|
asyncore.loop(use_poll=self.usepoll, count=300, timeout=.01)
|
|
s.join(timeout=TIMEOUT)
|
|
if s.is_alive():
|
|
self.fail("join() timed out")
|
|
|
|
self.assertEqual(c.contents, [b"hello world", b"I'm not dead yet!"])
|
|
|
|
# the line terminator tests below check receiving variously-sized
|
|
# chunks back from the server in order to exercise all branches of
|
|
# async_chat.handle_read
|
|
|
|
def test_line_terminator1(self):
|
|
# test one-character terminator
|
|
for l in (1,2,3):
|
|
self.line_terminator_check(b'\n', l)
|
|
|
|
def test_line_terminator2(self):
|
|
# test two-character terminator
|
|
for l in (1,2,3):
|
|
self.line_terminator_check(b'\r\n', l)
|
|
|
|
def test_line_terminator3(self):
|
|
# test three-character terminator
|
|
for l in (1,2,3):
|
|
self.line_terminator_check(b'qqq', l)
|
|
|
|
def numeric_terminator_check(self, termlen):
|
|
# Try reading a fixed number of bytes
|
|
s, event = start_echo_server()
|
|
c = echo_client(termlen, s.port)
|
|
data = b"hello world, I'm not dead yet!\n"
|
|
c.push(data)
|
|
c.push(SERVER_QUIT)
|
|
asyncore.loop(use_poll=self.usepoll, count=300, timeout=.01)
|
|
s.join(timeout=TIMEOUT)
|
|
if s.is_alive():
|
|
self.fail("join() timed out")
|
|
|
|
self.assertEqual(c.contents, [data[:termlen]])
|
|
|
|
def test_numeric_terminator1(self):
|
|
# check that ints & longs both work (since type is
|
|
# explicitly checked in async_chat.handle_read)
|
|
self.numeric_terminator_check(1)
|
|
|
|
def test_numeric_terminator2(self):
|
|
self.numeric_terminator_check(6)
|
|
|
|
def test_none_terminator(self):
|
|
# Try reading a fixed number of bytes
|
|
s, event = start_echo_server()
|
|
c = echo_client(None, s.port)
|
|
data = b"hello world, I'm not dead yet!\n"
|
|
c.push(data)
|
|
c.push(SERVER_QUIT)
|
|
asyncore.loop(use_poll=self.usepoll, count=300, timeout=.01)
|
|
s.join(timeout=TIMEOUT)
|
|
if s.is_alive():
|
|
self.fail("join() timed out")
|
|
|
|
self.assertEqual(c.contents, [])
|
|
self.assertEqual(c.buffer, data)
|
|
|
|
def test_simple_producer(self):
|
|
s, event = start_echo_server()
|
|
c = echo_client(b'\n', s.port)
|
|
data = b"hello world\nI'm not dead yet!\n"
|
|
p = asynchat.simple_producer(data+SERVER_QUIT, buffer_size=8)
|
|
c.push_with_producer(p)
|
|
asyncore.loop(use_poll=self.usepoll, count=300, timeout=.01)
|
|
s.join(timeout=TIMEOUT)
|
|
if s.is_alive():
|
|
self.fail("join() timed out")
|
|
|
|
self.assertEqual(c.contents, [b"hello world", b"I'm not dead yet!"])
|
|
|
|
def test_string_producer(self):
|
|
s, event = start_echo_server()
|
|
c = echo_client(b'\n', s.port)
|
|
data = b"hello world\nI'm not dead yet!\n"
|
|
c.push_with_producer(data+SERVER_QUIT)
|
|
asyncore.loop(use_poll=self.usepoll, count=300, timeout=.01)
|
|
s.join(timeout=TIMEOUT)
|
|
if s.is_alive():
|
|
self.fail("join() timed out")
|
|
|
|
self.assertEqual(c.contents, [b"hello world", b"I'm not dead yet!"])
|
|
|
|
def test_empty_line(self):
|
|
# checks that empty lines are handled correctly
|
|
s, event = start_echo_server()
|
|
c = echo_client(b'\n', s.port)
|
|
c.push(b"hello world\n\nI'm not dead yet!\n")
|
|
c.push(SERVER_QUIT)
|
|
asyncore.loop(use_poll=self.usepoll, count=300, timeout=.01)
|
|
s.join(timeout=TIMEOUT)
|
|
if s.is_alive():
|
|
self.fail("join() timed out")
|
|
|
|
self.assertEqual(c.contents,
|
|
[b"hello world", b"", b"I'm not dead yet!"])
|
|
|
|
def test_close_when_done(self):
|
|
s, event = start_echo_server()
|
|
s.start_resend_event = threading.Event()
|
|
c = echo_client(b'\n', s.port)
|
|
c.push(b"hello world\nI'm not dead yet!\n")
|
|
c.push(SERVER_QUIT)
|
|
c.close_when_done()
|
|
asyncore.loop(use_poll=self.usepoll, count=300, timeout=.01)
|
|
|
|
# Only allow the server to start echoing data back to the client after
|
|
# the client has closed its connection. This prevents a race condition
|
|
# where the server echoes all of its data before we can check that it
|
|
# got any down below.
|
|
s.start_resend_event.set()
|
|
s.join(timeout=TIMEOUT)
|
|
if s.is_alive():
|
|
self.fail("join() timed out")
|
|
|
|
self.assertEqual(c.contents, [])
|
|
# the server might have been able to send a byte or two back, but this
|
|
# at least checks that it received something and didn't just fail
|
|
# (which could still result in the client not having received anything)
|
|
self.assertGreater(len(s.buffer), 0)
|
|
|
|
|
|
class TestAsynchat_WithPoll(TestAsynchat):
|
|
usepoll = True
|
|
|
|
class TestHelperFunctions(unittest.TestCase):
|
|
def test_find_prefix_at_end(self):
|
|
self.assertEqual(asynchat.find_prefix_at_end("qwerty\r", "\r\n"), 1)
|
|
self.assertEqual(asynchat.find_prefix_at_end("qwertydkjf", "\r\n"), 0)
|
|
|
|
class TestFifo(unittest.TestCase):
|
|
def test_basic(self):
|
|
f = asynchat.fifo()
|
|
f.push(7)
|
|
f.push(b'a')
|
|
self.assertEqual(len(f), 2)
|
|
self.assertEqual(f.first(), 7)
|
|
self.assertEqual(f.pop(), (1, 7))
|
|
self.assertEqual(len(f), 1)
|
|
self.assertEqual(f.first(), b'a')
|
|
self.assertEqual(f.is_empty(), False)
|
|
self.assertEqual(f.pop(), (1, b'a'))
|
|
self.assertEqual(len(f), 0)
|
|
self.assertEqual(f.is_empty(), True)
|
|
self.assertEqual(f.pop(), (0, None))
|
|
|
|
def test_given_list(self):
|
|
f = asynchat.fifo([b'x', 17, 3])
|
|
self.assertEqual(len(f), 3)
|
|
self.assertEqual(f.pop(), (1, b'x'))
|
|
self.assertEqual(f.pop(), (1, 17))
|
|
self.assertEqual(f.pop(), (1, 3))
|
|
self.assertEqual(f.pop(), (0, None))
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|