    @Test
    public void shouldRegisterHandler() {

        final Long testCommandId = 815L;

        final NewCommandSourceHandler registeredHandler = this.commandHandlerProvider.getHandler("HUMAN", "UPDATE");

        final CommandProcessingResult result = registeredHandler
                .processCommand(JsonCommand.fromExistingCommand(testCommandId, null, null, null, null, null, null, null, null, null, null));
        assertEquals(testCommandId, result.commandId());
    }