@Test
public void testReadUnexistedFile() {

    long reqId = 3;
    BinaryRawWriterEx message = createMessage(reqId, ModelStorateThinClientProcessor.PROCESSOR_ID, ModelStorateThinClientProcessor.Method.READ_FILE);
    message.writeString("/a/b/unexisted_file");
    ClientCustomQueryRequest req = new ClientCustomQueryRequest(toReader(message));
    ClientResponse resp = req.process(connCtx);
    assertEquals(ClientStatus.FAILED, resp.status()); // error
    assertFalse(resp.error().isEmpty());
}