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: /lib/python3/dist-packages/twisted/pair/test/ [ drwxr-xr-x ]
name : test_ethernet.py # Copyright (c) Twisted Matrix Laboratories. # See LICENSE for details. from twisted.trial import unittest from twisted.python import components from twisted.pair import ethernet, raw from zope.interface import implementer @implementer(raw.IRawPacketProtocol) class MyProtocol: def __init__(self, expecting): self.expecting = list(expecting) def datagramReceived(self, data, **kw): assert self.expecting, 'Got a packet when not expecting anymore.' expect = self.expecting.pop(0) assert expect == (data, kw), \ "Expected %r, got %r" % ( expect, (data, kw), ) class EthernetTests(unittest.TestCase): def testPacketParsing(self): proto = ethernet.EthernetProtocol() p1 = MyProtocol([ (b'foobar', { 'partial': 0, 'dest': b"123456", 'source': b"987654", 'protocol': 0x0800, }), ]) proto.addProto(0x0800, p1) proto.datagramReceived(b"123456987654\x08\x00foobar", partial=0) assert not p1.expecting, \ 'Should not expect any more packets, but still want %r' % p1.expecting def testMultiplePackets(self): proto = ethernet.EthernetProtocol() p1 = MyProtocol([ (b'foobar', { 'partial': 0, 'dest': b"123456", 'source': b"987654", 'protocol': 0x0800, }), (b'quux', { 'partial': 1, 'dest': b"012345", 'source': b"abcdef", 'protocol': 0x0800, }), ]) proto.addProto(0x0800, p1) proto.datagramReceived(b"123456987654\x08\x00foobar", partial=0) proto.datagramReceived(b"012345abcdef\x08\x00quux", partial=1) assert not p1.expecting, \ 'Should not expect any more packets, but still want %r' % p1.expecting def testMultipleSameProtos(self): proto = ethernet.EthernetProtocol() p1 = MyProtocol([ (b'foobar', { 'partial': 0, 'dest': b"123456", 'source': b"987654", 'protocol': 0x0800, }), ]) p2 = MyProtocol([ (b'foobar', { 'partial': 0, 'dest': b"123456", 'source': b"987654", 'protocol': 0x0800, }), ]) proto.addProto(0x0800, p1) proto.addProto(0x0800, p2) proto.datagramReceived(b"123456987654\x08\x00foobar", partial=0) assert not p1.expecting, \ 'Should not expect any more packets, but still want %r' % p1.expecting assert not p2.expecting, \ 'Should not expect any more packets, but still want %r' % p2.expecting def testWrongProtoNotSeen(self): proto = ethernet.EthernetProtocol() p1 = MyProtocol([]) proto.addProto(0x0801, p1) proto.datagramReceived(b"123456987654\x08\x00foobar", partial=0) proto.datagramReceived(b"012345abcdef\x08\x00quux", partial=1) def testDemuxing(self): proto = ethernet.EthernetProtocol() p1 = MyProtocol([ (b'foobar', { 'partial': 0, 'dest': b"123456", 'source': b"987654", 'protocol': 0x0800, }), (b'quux', { 'partial': 1, 'dest': b"012345", 'source': b"abcdef", 'protocol': 0x0800, }), ]) proto.addProto(0x0800, p1) p2 = MyProtocol([ (b'quux', { 'partial': 1, 'dest': b"012345", 'source': b"abcdef", 'protocol': 0x0806, }), (b'foobar', { 'partial': 0, 'dest': b"123456", 'source': b"987654", 'protocol': 0x0806, }), ]) proto.addProto(0x0806, p2) proto.datagramReceived(b"123456987654\x08\x00foobar", partial=0) proto.datagramReceived(b"012345abcdef\x08\x06quux", partial=1) proto.datagramReceived(b"123456987654\x08\x06foobar", partial=0) proto.datagramReceived(b"012345abcdef\x08\x00quux", partial=1) assert not p1.expecting, \ 'Should not expect any more packets, but still want %r' % p1.expecting assert not p2.expecting, \ 'Should not expect any more packets, but still want %r' % p2.expecting def testAddingBadProtos_WrongLevel(self): """Adding a wrong level protocol raises an exception.""" e = ethernet.EthernetProtocol() try: e.addProto(42, "silliness") except components.CannotAdapt: pass else: raise AssertionError('addProto must raise an exception for bad protocols') def testAddingBadProtos_TooSmall(self): """Adding a protocol with a negative number raises an exception.""" e = ethernet.EthernetProtocol() try: e.addProto(-1, MyProtocol([])) except TypeError as e: if e.args == ('Added protocol must be positive or zero',): pass else: raise else: raise AssertionError('addProto must raise an exception for bad protocols') def testAddingBadProtos_TooBig(self): """Adding a protocol with a number >=2**16 raises an exception.""" e = ethernet.EthernetProtocol() try: e.addProto(2**16, MyProtocol([])) except TypeError as e: if e.args == ('Added protocol must fit in 16 bits',): pass else: raise else: raise AssertionError('addProto must raise an exception for bad protocols') def testAddingBadProtos_TooBig2(self): """Adding a protocol with a number >=2**16 raises an exception.""" e = ethernet.EthernetProtocol() try: e.addProto(2**16+1, MyProtocol([])) except TypeError as e: if e.args == ('Added protocol must fit in 16 bits',): pass else: raise else: raise AssertionError('addProto must raise an exception for bad protocols')