How to use the pypsexec.paexec.PAExecFileInfo function in pypsexec

def test_parse_message(self):
        actual = PAExecFileInfo()
        data = b"\x04\x00\x00\x00" \
               b"\x66\x00\x69\x00\x6c\x00\x65\x00" \
               b"\x00\x80\x3e\xd5\xde\xb1\x9d\x01" \
               b"\x0a\x00\x00\x00" \
               b"\x0a\x00\x00\x00" \
               b"\x01"
        data = actual.unpack(data)
        assert len(actual) == 29
        assert data == b""
        assert actual['filename_len'].get_value() == 4
        assert actual['filename'].get_value() == "file".encode('utf-16-le-')
        assert actual['file_last_write'].get_value() == \
            datetime.utcfromtimestamp(0)
        assert actual['file_version_ls'].get_value() == 10
        assert actual['file_version_ms'].get_value() == 10
        assert actual['copy_file'].get_value()

message['arguments'] = "arg1".encode('utf-16-le')
        message['src_dir'] = "C:\\source".encode('utf-16-le')
        message['dest_dir'] = "C:\\target".encode('utf-16-le')

        src_file_info1 = PAExecFileInfo()
        src_file_info1['filename'] = "src1".encode('utf-16-le')
        src_file_info1['file_last_write'] = datetime.utcfromtimestamp(0)
        src_file_info2 = PAExecFileInfo()
        src_file_info2['filename'] = "src2".encode('utf-16-le')
        src_file_info2['file_last_write'] = datetime.utcfromtimestamp(0)
        message['src_files'] = [src_file_info1, src_file_info2]

        dest_file_info1 = PAExecFileInfo()
        dest_file_info1['filename'] = "dest1".encode('utf-16-le')
        dest_file_info1['file_last_write'] = datetime.utcfromtimestamp(0)
        dest_file_info2 = PAExecFileInfo()
        dest_file_info2['filename'] = "dest2".encode('utf-16-le')
        dest_file_info2['file_last_write'] = datetime.utcfromtimestamp(0)
        message['dest_files'] = [dest_file_info1, dest_file_info2]

        expected = b"\x01\x00\x00\x00" \
                   b"\x02\x00\x00\x00" \
                   b"\x01\x00\x00\x00\x02\x00\x00\x00" \
                   b"\x00" \
                   b"\x00" \
                   b"\x00" \
                   b"\x00" \
                   b"\x00" \
                   b"\x00\x00\x00\x00" \
                   b"\x01" \
                   b"\x00" \
                   b"\x00" \

message['password'] = "pass".encode('utf-16-le')
        message['username'] = "user".encode('utf-16-le')
        message['executable'] = "a.exe".encode('utf-16-le')
        message['arguments'] = "arg1".encode('utf-16-le')
        message['src_dir'] = "C:\\source".encode('utf-16-le')
        message['dest_dir'] = "C:\\target".encode('utf-16-le')

        src_file_info1 = PAExecFileInfo()
        src_file_info1['filename'] = "src1".encode('utf-16-le')
        src_file_info1['file_last_write'] = datetime.utcfromtimestamp(0)
        src_file_info2 = PAExecFileInfo()
        src_file_info2['filename'] = "src2".encode('utf-16-le')
        src_file_info2['file_last_write'] = datetime.utcfromtimestamp(0)
        message['src_files'] = [src_file_info1, src_file_info2]

        dest_file_info1 = PAExecFileInfo()
        dest_file_info1['filename'] = "dest1".encode('utf-16-le')
        dest_file_info1['file_last_write'] = datetime.utcfromtimestamp(0)
        dest_file_info2 = PAExecFileInfo()
        dest_file_info2['filename'] = "dest2".encode('utf-16-le')
        dest_file_info2['file_last_write'] = datetime.utcfromtimestamp(0)
        message['dest_files'] = [dest_file_info1, dest_file_info2]

        expected = b"\x01\x00\x00\x00" \
                   b"\x02\x00\x00\x00" \
                   b"\x01\x00\x00\x00\x02\x00\x00\x00" \
                   b"\x00" \
                   b"\x00" \
                   b"\x00" \
                   b"\x00" \
                   b"\x00" \
                   b"\x00\x00\x00\x00" \

def test_create_message(self):
        message = PAExecSettingsBuffer()
        message['processors'] = [1, 2]
        message['interactive'] = True
        message['password'] = "pass".encode('utf-16-le')
        message['username'] = "user".encode('utf-16-le')
        message['executable'] = "a.exe".encode('utf-16-le')
        message['arguments'] = "arg1".encode('utf-16-le')
        message['src_dir'] = "C:\\source".encode('utf-16-le')
        message['dest_dir'] = "C:\\target".encode('utf-16-le')

        src_file_info1 = PAExecFileInfo()
        src_file_info1['filename'] = "src1".encode('utf-16-le')
        src_file_info1['file_last_write'] = datetime.utcfromtimestamp(0)
        src_file_info2 = PAExecFileInfo()
        src_file_info2['filename'] = "src2".encode('utf-16-le')
        src_file_info2['file_last_write'] = datetime.utcfromtimestamp(0)
        message['src_files'] = [src_file_info1, src_file_info2]

        dest_file_info1 = PAExecFileInfo()
        dest_file_info1['filename'] = "dest1".encode('utf-16-le')
        dest_file_info1['file_last_write'] = datetime.utcfromtimestamp(0)
        dest_file_info2 = PAExecFileInfo()
        dest_file_info2['filename'] = "dest2".encode('utf-16-le')
        dest_file_info2['file_last_write'] = datetime.utcfromtimestamp(0)
        message['dest_files'] = [dest_file_info1, dest_file_info2]

        expected = b"\x01\x00\x00\x00" \

message['unique_id'] = 1

        buffer = PAExecSettingsBuffer()
        buffer['processors'] = [1, 2]
        buffer['interactive'] = True
        buffer['password'] = "pass".encode('utf-16-le')
        buffer['username'] = "user".encode('utf-16-le')
        buffer['executable'] = "a.exe".encode('utf-16-le')
        buffer['arguments'] = "arg1".encode('utf-16-le')
        buffer['src_dir'] = "C:\\source".encode('utf-16-le')
        buffer['dest_dir'] = "C:\\target".encode('utf-16-le')

        src_file_info1 = PAExecFileInfo()
        src_file_info1['filename'] = "src1".encode('utf-16-le')
        src_file_info1['file_last_write'] = datetime.utcfromtimestamp(0)
        src_file_info2 = PAExecFileInfo()
        src_file_info2['filename'] = "src2".encode('utf-16-le')
        src_file_info2['file_last_write'] = datetime.utcfromtimestamp(0)
        buffer['src_files'] = [src_file_info1, src_file_info2]

        dest_file_info1 = PAExecFileInfo()
        dest_file_info1['filename'] = "dest1".encode('utf-16-le')
        dest_file_info1['file_last_write'] = datetime.utcfromtimestamp(0)
        dest_file_info2 = PAExecFileInfo()
        dest_file_info2['filename'] = "dest2".encode('utf-16-le')
        dest_file_info2['file_last_write'] = datetime.utcfromtimestamp(0)
        buffer['dest_files'] = [dest_file_info1, dest_file_info2]
        message['buffer'] = buffer
        expected = b"\x01\x00" \
                   b"\x01\x02\x03\x04" \
                   b"\x00\x06\x06\x0f\x08\x15\x16\x13" \
                   b"\x1d\x19\x1a\x27\x22\x2d\x2e\x2b" \

def test_create_message(self):
        message = PAExecFileInfo()
        message['filename'] = "file".encode('utf-16-le')
        message['file_last_write'] = datetime.utcfromtimestamp(0)
        message['file_version_ls'] = 10
        message['file_version_ms'] = 10
        message['copy_file'] = True
        expected = b"\x04\x00\x00\x00" \
                   b"\x66\x00\x69\x00\x6c\x00\x65\x00" \
                   b"\x00\x80\x3e\xd5\xde\xb1\x9d\x01" \
                   b"\x0a\x00\x00\x00" \
                   b"\x0a\x00\x00\x00" \
                   b"\x01"
        actual = message.pack()
        assert len(message) == 29
        assert actual == expected

def __init__(self):
        self.fields = OrderedDict([
            ('filename_len', IntField(
                size=4,
                default=lambda s: int(len(s['filename']) / 2)
            )),
            ('filename', BytesField(
                size=lambda s: s['filename_len'].get_value() * 2
            )),
            ('file_last_write', DateTimeField(size=8)),
            ('file_version_ls', IntField(size=4)),
            ('file_version_ms', IntField(size=4)),
            ('copy_file', BoolField(size=1))
        ])
        super(PAExecFileInfo, self).__init__()

def _get_file(self, data):
        min_size = 21
        filename_size = struct.unpack("

size=lambda s: s['src_dir_len'].get_value() * 2
            )),
            ('dest_dir_len', IntField(
                size=4,
                default=lambda s: int(len(s['dest_dir']) / 2)
            )),
            ('dest_dir', BytesField(
                size=lambda s: s['dest_dir_len'].get_value() * 2
            )),
            ('num_src_files', IntField(
                size=4,
                default=lambda s: len(s['src_files'].get_value())
            )),
            ('src_files', ListField(
                list_count=lambda s: s['num_src_files'].get_value(),
                list_type=StructureField(structure_type=PAExecFileInfo),
                unpack_func=lambda s, d:
                self._unpack_file_list(s, d, 'num_src_files')
            )),
            ('num_dest_files', IntField(
                size=4,
                default=lambda s: len(s['dest_files'].get_value())
            )),
            ('dest_files', ListField(
                list_count=lambda s: s['num_dest_files'].get_value(),
                list_type=StructureField(structure_type=PAExecFileInfo),
                unpack_func=lambda s, d:
                self._unpack_file_list(s, d, 'num_dest_files')
            )),
            ('timeout_seconds', IntField(size=4))
        ])
        super(PAExecSettingsBuffer, self).__init__()