/* Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.

   This program 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; version 2 of the License.

   This program 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 this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */

// First include (the generated) my_config.h, to get correct platform defines.
#include "my_config.h"
#include <gtest/gtest.h>

#include <my_global.h>
#include <my_sys.h>
#include <base64.h>
#include <string.h>

namespace mysys_base64_unittest {

const int BASE64_LOOP_COUNT= 500;

TEST(Mysys, Base64)
{
  int i, cmp;
  size_t j, k, l, dst_len, needed_length;
  MY_INIT("base64-t");

  for (i= 0; i < BASE64_LOOP_COUNT; i++)
  {
    /* Create source data */
    const size_t src_len= rand() % 1000 + 1;

    char * src= (char *) malloc(src_len);
    char * s= src;
    char * str;
    char * dst;

    for (j= 0; j<src_len; j++)
    {
      char c= rand();
      *s++= c;
    }

    /* Encode */
    needed_length= base64_needed_encoded_length(src_len);
    str= (char *) malloc(needed_length);
    for (k= 0; k < needed_length; k++)
      str[k]= 0xff; /* Fill memory to check correct NUL termination */
    EXPECT_EQ(0, base64_encode(src, src_len, str))
      << "base64_encode: size " << i;
    EXPECT_EQ(needed_length, strlen(str) + 1)
      << "base64_needed_encoded_length: " << i;

    /* Decode */
    dst= (char *) malloc(base64_needed_decoded_length(strlen(str)));
    dst_len= base64_decode(str, strlen(str), dst, NULL, 0);
    EXPECT_EQ(dst_len, src_len) << "Comparing lengths";

    cmp= memcmp(src, dst, src_len);
    EXPECT_EQ(0, cmp) << "Comparing encode-decode result";
    if (cmp != 0)
    {
      char buf[80];
      ADD_FAILURE() <<
        "       --------- src ---------   --------- dst ---------";
      for (k= 0; k<src_len; k+=8)
      {
        sprintf(buf, "%.4x   ", (uint) k);
        for (l=0; l<8 && k+l<src_len; l++)
        {
          unsigned char c= src[k+l];
          sprintf(buf, "%.2x ", (unsigned)c);
        }

        sprintf(buf, "  ");

        for (l=0; l<8 && k+l<dst_len; l++)
        {
          unsigned char c= dst[k+l];
          sprintf(buf, "%.2x ", (unsigned)c);
        }
        ADD_FAILURE() << buf;
      }
      ADD_FAILURE() << "src length: " << src_len
                    << "dst length: " << dst_len;
    }
    free(str);
    free(src);
    free(dst);
  }
}

}
