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# IVLE - Informatics Virtual Learning Environment
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# Copyright (C) 2007-2010 The University of Melbourne
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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import simplejson as json
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from nose.tools import assert_equal, raises
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SIMPLESTRING = "Hello world!"
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SIMPLENETSTRING = "12:Hello world!,"
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class TestChat(object):
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"""Creates a socket pair for testing"""
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self.s1, self.s2 = socket.socketpair()
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self.s1.settimeout(TIMEOUT)
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self.s2.settimeout(TIMEOUT)
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"""Closes the socket pair"""
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def test_send_null_netstring(self):
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"""Check that we construct a empty Netstring correctly"""
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ivle.chat.send_netstring(self.s1, "")
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assert_equal(self.s2.recv(1024), NULLNETSTRING)
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def test_send_simple_netstring(self):
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"""Check that we construct a simple Netstring correctly"""
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ivle.chat.send_netstring(self.s1, SIMPLESTRING)
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assert_equal(self.s2.recv(1024), SIMPLENETSTRING)
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def test_recv_null_netstring(self):
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"""Check that we can decode a null Netstring"""
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self.s1.sendall(NULLNETSTRING)
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assert_equal(ivle.chat.recv_netstring(self.s2), "")
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def test_recv_null_netstring(self):
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"""Check that we can decode a simple Netstring"""
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self.s1.sendall(SIMPLENETSTRING)
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assert_equal(ivle.chat.recv_netstring(self.s2), SIMPLESTRING)
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@raises(socket.timeout)
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def test_invalid_short_netstring(self):
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self.s1.sendall("1234:not that long!,")
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assert ivle.chat.recv_netstring(self.s2) is None
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@raises(ivle.chat.ProtocolError)
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def test_invalid_long_netstring(self):
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self.s1.sendall("5:not that short!,")
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assert ivle.chat.recv_netstring(self.s2) is None
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def test_long_netstring(self):
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# XXX: send() may block if this is too big
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msg = os.urandom(50000)
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ivle.chat.send_netstring(self.s1, msg)
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assert ivle.chat.recv_netstring(self.s2) == msg
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def test_multiple_netstrings(self):
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message = os.urandom(random.randint(0,20))
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messages.append(message)
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ivle.chat.send_netstring(self.s1, message)
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assert_equal(ivle.chat.recv_netstring(self.s2), messages[i])
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def test_encode(self):
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"""Check that we correctly encode a basic object
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content = json.dumps(MESSAGE)
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# Digest can be formed with `echo -n "${content}${MAGIC}" | md5sum`
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DIGEST = '2b59b68e1ac0852b87fb7e64946f2658'
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expected = {'digest': DIGEST,
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encoded = ivle.chat.encode(MESSAGE, MAGIC)
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assert_equal(json.loads(encoded), expected)
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def test_encode_decode(self):
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"""Check that a round trip encoding and decoding works
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MESSAGE = {'message': 'Hello, world'}
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MAGIC = "MagicString"
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encoded = ivle.chat.encode(MESSAGE, MAGIC)
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decoded = ivle.chat.decode(encoded, MAGIC)
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assert_equal(decoded, MESSAGE)
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@raises(ivle.chat.ProtocolError)
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def test_decode_bad_magic(self):
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"""Check that a bad digest causes a ProtocolError to be raised
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CHATMESSAGE = ('{"content": "{\\"a\\": \\"b\\"}", "digest": ' +
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'"eb860a5fe8fdbef19ffb79e3a5c47113"}')
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CORRECTMAGIC = "AEIOU"
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INCORRECTMAGIC = "ABCDE"
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# Check our "correct" string decodes without a ProtocolError
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ivle.chat.decode(CHATMESSAGE, CORRECTMAGIC)
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except ivle.chat.ProtocolError:
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raise AssertionError("ProtocolError with 'correct' magic")
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# This should raise the ProtocolError
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ivle.chat.decode(CHATMESSAGE, INCORRECTMAGIC)
added
removed
ivle/tests/test_chat.py
