qa_gr_circular_file.cc

gnuradio软件无线电源程序.现在的手机多基于软件无线电

/* -*- c++ -*- */
/*
 * Copyright 2002 Free Software Foundation, Inc.
 * 
 * This file is part of GNU Radio
 * 
 * GNU Radio is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 * 
 * GNU Radio is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with GNU Radio; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#include <qa_gr_circular_file.h>
#include <gr_circular_file.h>
#include <cppunit/TestAssert.h>
#include <iostream>
#include <stdio.h>
#include <unistd.h>

static const char *test_file = "qa_gr_circular_file.data";
static const int BUFFER_SIZE = 8192;
static const int NWRITE = 8192 * 9 / 8;

void
qa_gr_circular_file::t1 ()
{
  gr_circular_file	*cf_writer;
  gr_circular_file	*cf_reader;
  
  // write the data...

  cf_writer = new gr_circular_file (test_file, true, BUFFER_SIZE * sizeof (short));

  short sd;
  for (int i = 0; i < NWRITE; i++){
    sd = i;
    cf_writer->write (&sd, sizeof (sd));
  }

  delete cf_writer;

  // now read it back...

  cf_reader = new gr_circular_file (test_file);
  for (int i = 0; i < BUFFER_SIZE; i++){
    int n = cf_reader->read (&sd, sizeof (sd));
    CPPUNIT_ASSERT_EQUAL ((int) sizeof (sd), n);
    CPPUNIT_ASSERT_EQUAL (NWRITE - BUFFER_SIZE + i, (int) sd);
  }

  int n = cf_reader->read (&sd, sizeof (sd));
  CPPUNIT_ASSERT_EQUAL (0, n);

  delete cf_reader;
  unlink (test_file);
}