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# Copyright (C) 2012- Takafumi Arakaki
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import io
from sexpdata import Symbol
from ..client import EPCClient
from ..handler import encode_message, unpack_message, BlockingCallback, \
ReturnError, EPCError
from ..py3compat import Queue
from .utils import BaseTestCase
class FakeFile(object):
pass
class FakeSocket(object):
def __init__(self):
self._queue = Queue.Queue()
self._buffer = io.BytesIO()
self.sent_message = Queue.Queue()
self._alive = True
def makefile(self, mode, *_):
ff = FakeFile()
ff.closed = False
ff.close = lambda: None
ff.flush = lambda: None
if 'r' in mode:
ff.read = self.recv
return ff
elif 'w' in mode:
ff.write = self.sendall
return ff
def append(self, byte):
self._queue.put(byte)
def _pull(self):
byte = self._queue.get()
pos = self._buffer.tell()
self._buffer.write(byte)
self._buffer.seek(pos)
def recv(self, bufsize):
while True:
if not self._alive:
return ''
got = self._buffer.read(bufsize)
if got:
return got
# Do not go to the next loop until some byte is appended
# to the queue:
self._pull()
def sendall(self, string):
self.sent_message.put(string)
def close(self):
self._alive = False
self.append(''.encode('ascii'))
class TestClient(BaseTestCase):
def setUp(self):
self.fsock = FakeSocket()
self.next_reply = []
self.client = EPCClient(self.fsock)
@self.client.register_function
def echo(*a):
"""Return argument unchanged."""
return a
def tearDown(self):
self.client.socket.close() # connection is closed by server
def set_next_reply(self, *args):
self.next_reply.append(encode_message(*args))
def request(self, name, *args):
bc = BlockingCallback()
getattr(self.client, name)(*args, **bc.cbs)
self.fsock.append(self.next_reply.pop(0)) # reply comes after call!
return bc.result(timeout=self.timeout)
def sent_message(self):
raw = self.fsock.sent_message.get(timeout=self.timeout)
(name, uid, rest) = unpack_message(raw[6:])
if name == 'call':
rest[0] = rest[0].value()
return [name, uid] + rest
def check_sent_message(self, name, uid, args):
sent = self.sent_message()
self.assertEqual(sent, [name, uid] + list(args))
def check_return(self, desired_return, name, *args):
uid = 1
self.set_next_reply('return', uid, desired_return)
got = self.request(name, *args)
self.assertEqual(got, desired_return)
self.check_sent_message(name, uid, args)
def test_call_return(self):
self.check_return('some value', 'call', 'dummy', [1, 2, 3])
def test_methods_return(self):
self.check_return([[Symbol('dummy'), [], "document"]], 'methods')
def check_return_error(self, reply_name, name, *args):
uid = 1
reply = 'error value'
eclass = ReturnError if reply_name == 'return-error' else EPCError
error = eclass(reply)
self.set_next_reply(reply_name, uid, reply)
try:
self.request(name, *args)
assert False, 'self.client.{0}({1}) should raise an error' \
.format(name, args)
except Exception as got:
self.assertIsInstance(got, type(error))
self.assertEqual(got.args, error.args)
self.check_sent_message(name, uid, args)
def test_call_return_error(self):
self.check_return_error('return-error', 'call', 'dummy', [1, 2, 3])
def test_call_epc_error(self):
self.check_return_error('epc-error', 'call', 'dummy', [1, 2, 3])
def test_methods_return_error(self):
self.check_return_error('return-error', 'methods')
def test_methods_epc_error(self):
self.check_return_error('epc-error', 'methods')
def test_echo(self):
uid = 1
self.fsock.append(encode_message('call', uid, Symbol('echo'), [55]))
self.check_sent_message('return', uid, [[55]])
class TestClientClosedByClient(TestClient):
def tearDown(self):
self.client.close()
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