How to use the pypsexec.rpc.SyntaxIdElement function in pypsexec

def test_create_message(self):
        message = ContextElement()
        message['context_id'] = 4
        syntax1 = SyntaxIdElement()
        syntax1['uuid'] = uuid.UUID(bytes=b"\xff" * 16)
        syntax2 = SyntaxIdElement()
        syntax2['uuid'] = uuid.UUID(bytes=b"\xee" * 16)
        syntax3 = SyntaxIdElement()
        syntax3['uuid'] = uuid.UUID(bytes=b"\xdd" * 16)
        message['abstract_syntax'] = syntax1
        message['transfer_syntaxes'] = [syntax2, syntax3]
        expected = b"\x04\x00" \
                   b"\x02" \
                   b"\x00" \
                   b"\xff\xff\xff\xff\xff\xff\xff\xff" \
                   b"\xff\xff\xff\xff\xff\xff\xff\xff" \
                   b"\x00\x00\x00\x00" \
                   b"\xee\xee\xee\xee\xee\xee\xee\xee" \
                   b"\xee\xee\xee\xee\xee\xee\xee\xee" \
                   b"\x00\x00\x00\x00" \
                   b"\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd" \
                   b"\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd" \

def test_create_message(self):
        message = SyntaxIdElement()
        message['uuid'] = uuid.UUID(bytes=b"\xff" * 16)
        message['version'] = 2
        expected = b"\xff\xff\xff\xff\xff\xff\xff\xff" \
                   b"\xff\xff\xff\xff\xff\xff\xff\xff" \
                   b"\x02\x00\x00\x00"
        actual = message.pack()
        assert len(message) == 20
        assert actual == expected

def test_create_message(self):
        message = ContextElement()
        message['context_id'] = 4
        syntax1 = SyntaxIdElement()
        syntax1['uuid'] = uuid.UUID(bytes=b"\xff" * 16)
        syntax2 = SyntaxIdElement()
        syntax2['uuid'] = uuid.UUID(bytes=b"\xee" * 16)
        syntax3 = SyntaxIdElement()
        syntax3['uuid'] = uuid.UUID(bytes=b"\xdd" * 16)
        message['abstract_syntax'] = syntax1
        message['transfer_syntaxes'] = [syntax2, syntax3]
        expected = b"\x04\x00" \
                   b"\x02" \
                   b"\x00" \
                   b"\xff\xff\xff\xff\xff\xff\xff\xff" \
                   b"\xff\xff\xff\xff\xff\xff\xff\xff" \
                   b"\x00\x00\x00\x00" \
                   b"\xee\xee\xee\xee\xee\xee\xee\xee" \
                   b"\xee\xee\xee\xee\xee\xee\xee\xee" \
                   b"\x00\x00\x00\x00" \
                   b"\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd" \
                   b"\xdd\xdd\xdd\xdd\xdd\xdd\xdd\xdd" \
                   b"\x00\x00\x00\x00"
        actual = message.pack()

def test_parse_message(self):
        actual = SyntaxIdElement()
        data = b"\xff\xff\xff\xff\xff\xff\xff\xff" \
               b"\xff\xff\xff\xff\xff\xff\xff\xff" \
               b"\x02\x00\x00\x00"
        data = actual.unpack(data)
        assert len(actual) == 20
        assert data == b""
        assert actual['uuid'].get_value() == uuid.UUID(bytes=b"\xff" * 16)
        assert actual['version'].get_value() == 2

def test_create_message(self):
        message = ContextElement()
        message['context_id'] = 4
        syntax1 = SyntaxIdElement()
        syntax1['uuid'] = uuid.UUID(bytes=b"\xff" * 16)
        syntax2 = SyntaxIdElement()
        syntax2['uuid'] = uuid.UUID(bytes=b"\xee" * 16)
        syntax3 = SyntaxIdElement()
        syntax3['uuid'] = uuid.UUID(bytes=b"\xdd" * 16)
        message['abstract_syntax'] = syntax1
        message['transfer_syntaxes'] = [syntax2, syntax3]
        expected = b"\x04\x00" \
                   b"\x02" \
                   b"\x00" \
                   b"\xff\xff\xff\xff\xff\xff\xff\xff" \
                   b"\xff\xff\xff\xff\xff\xff\xff\xff" \
                   b"\x00\x00\x00\x00" \
                   b"\xee\xee\xee\xee\xee\xee\xee\xee" \
                   b"\xee\xee\xee\xee\xee\xee\xee\xee" \
                   b"\x00\x00\x00\x00" \

def __init__(self):
        self.fields = OrderedDict([
            ('result', EnumField(
                size=2,
                enum_type=ContextResult
            )),
            ('reason', EnumField(
                size=2,
                enum_type=ResultReason
            )),
            ('transfer_syntax', StructureField(
                size=20,
                structure_type=SyntaxIdElement
            )),
        ])
        super(Result, self).__init__()

context_ndr['abstract_syntax'] = SyntaxIdElement()
        context_ndr['abstract_syntax']['uuid'] = \
            uuid.UUID("367ABB81-9844-35F1-AD32-98F038001003")
        context_ndr['abstract_syntax']['version'] = 2

        # https://msdn.microsoft.com/en-us/library/cc243843.aspx
        ndr_syntax = SyntaxIdElement()
        ndr_syntax['uuid'] = uuid.UUID("8a885d04-1ceb-11c9-9fe8-08002b104860")
        ndr_syntax['version'] = 2
        context_ndr['transfer_syntaxes'] = [
            ndr_syntax
        ]

        context_bind = ContextElement()
        context_bind['context_id'] = 1
        context_bind['abstract_syntax'] = SyntaxIdElement()
        context_bind['abstract_syntax']['uuid'] = \
            uuid.UUID("367ABB81-9844-35F1-AD32-98F038001003")
        context_bind['abstract_syntax']['version'] = 2

        # https://msdn.microsoft.com/en-us/library/cc243715.aspx
        # uuid prefix = 6CB71C2C-9812-4540
        # uuid prefix bytes = b'\x2c\x1c\xb7\x6c\x12\x98\x40\x45'
        # BindTimeFeatureNegotiateBitmask
        # https://msdn.microsoft.com/en-us/library/cc243884.aspx
        # SecurityContextMultiplexingSupported = 0x01
        # KeepConnectionOnOrphanSupported = 0x02
        # version number is 1
        bind_syntax = SyntaxIdElement()
        bind_syntax['uuid'] = b'\x2c\x1c\xb7\x6c\x12\x98\x40\x45' \
                              b'\x03\x00\x00\x00\x00\x00\x00\x00'
        bind_syntax['version'] = 1

context_bind = ContextElement()
        context_bind['context_id'] = 1
        context_bind['abstract_syntax'] = SyntaxIdElement()
        context_bind['abstract_syntax']['uuid'] = \
            uuid.UUID("367ABB81-9844-35F1-AD32-98F038001003")
        context_bind['abstract_syntax']['version'] = 2

        # https://msdn.microsoft.com/en-us/library/cc243715.aspx
        # uuid prefix = 6CB71C2C-9812-4540
        # uuid prefix bytes = b'\x2c\x1c\xb7\x6c\x12\x98\x40\x45'
        # BindTimeFeatureNegotiateBitmask
        # https://msdn.microsoft.com/en-us/library/cc243884.aspx
        # SecurityContextMultiplexingSupported = 0x01
        # KeepConnectionOnOrphanSupported = 0x02
        # version number is 1
        bind_syntax = SyntaxIdElement()
        bind_syntax['uuid'] = b'\x2c\x1c\xb7\x6c\x12\x98\x40\x45' \
                              b'\x03\x00\x00\x00\x00\x00\x00\x00'
        bind_syntax['version'] = 1
        context_bind['transfer_syntaxes'] = [
            bind_syntax
        ]

        bind['context_elems'] = [
            context_ndr,
            context_bind
        ]
        bind_data = bind.pack()

        log.info("Sending bind request to svcctl")
        log.debug(str(bind))
        self.handle.write(bind_data)

bind = BindPDU()
        bind['pfx_flags'].set_flag(PFlags.PFC_FIRST_FRAG)
        bind['pfx_flags'].set_flag(PFlags.PFC_LAST_FRAG)
        bind['packed_drep'] = DataRepresentationFormat()
        bind['call_id'] = self.call_id
        self.call_id += 1

        context_ndr = ContextElement()
        context_ndr['context_id'] = 0
        context_ndr['abstract_syntax'] = SyntaxIdElement()
        context_ndr['abstract_syntax']['uuid'] = \
            uuid.UUID("367ABB81-9844-35F1-AD32-98F038001003")
        context_ndr['abstract_syntax']['version'] = 2

        # https://msdn.microsoft.com/en-us/library/cc243843.aspx
        ndr_syntax = SyntaxIdElement()
        ndr_syntax['uuid'] = uuid.UUID("8a885d04-1ceb-11c9-9fe8-08002b104860")
        ndr_syntax['version'] = 2
        context_ndr['transfer_syntaxes'] = [
            ndr_syntax
        ]

        context_bind = ContextElement()
        context_bind['context_id'] = 1
        context_bind['abstract_syntax'] = SyntaxIdElement()
        context_bind['abstract_syntax']['uuid'] = \
            uuid.UUID("367ABB81-9844-35F1-AD32-98F038001003")
        context_bind['abstract_syntax']['version'] = 2

        # https://msdn.microsoft.com/en-us/library/cc243715.aspx
        # uuid prefix = 6CB71C2C-9812-4540
        # uuid prefix bytes = b'\x2c\x1c\xb7\x6c\x12\x98\x40\x45'

def __init__(self):
        self.fields = OrderedDict([
            ('uuid', UuidField(little_endian=False)),
            ('version', IntField(size=4))
        ])
        super(SyntaxIdElement, self).__init__()