path: root/test/string/tester.c

/* Tester for string functions.
   Copyright (C) 1995-2001, 2003, 2005 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif

/* Make sure we don't test the optimized inline functions if we want to
   test the real implementation.  */
#if !defined DO_STRING_INLINES
#undef __USE_STRING_INLINES
#endif

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <fcntl.h>

#ifdef __UCLIBC__
# define __TEST_BSD_FUNCS__
#else
# undef __TEST_BSD_FUNCS__
#endif

#if defined(__UCLIBC_SUSV3_LEGACY__) || defined(__UCLIBC_SUSV3_LEGACY_MACROS__)
# define __TEST_SUSV3_LEGACY__
#else
# undef __TEST_SUSV3_LEGACY__
#endif

#define	STREQ(a, b)	(strcmp((a), (b)) == 0)

const char *it = "<UNSET>";	/* Routine name for message routines. */
size_t errors = 0;

/* Complain if condition is not true.  */
static void
check (int thing, int number)
{
  if (!thing)
    {
      printf("%s flunked test %d\n", it, number);
      ++errors;
    }
}

/* Complain if first two args don't strcmp as equal.  */
static void
equal (const char *a, const char *b, int number)
{
  check(a != NULL && b != NULL && STREQ (a, b), number);
}

char one[50];
char two[50];
char *cp;

static void
test_strcmp (void)
{
  it = "strcmp";
  check (strcmp ("", "") == 0, 1);		/* Trivial case. */
  check (strcmp ("a", "a") == 0, 2);		/* Identity. */
  check (strcmp ("abc", "abc") == 0, 3);	/* Multicharacter. */
  check (strcmp ("abc", "abcd") < 0, 4);	/* Length mismatches. */
  check (strcmp ("abcd", "abc") > 0, 5);
  check (strcmp ("abcd", "abce") < 0, 6);	/* Honest miscompares. */
  check (strcmp ("abce", "abcd") > 0, 7);
  check (strcmp ("a\203", "a") > 0, 8);		/* Tricky if char signed. */
  check (strcmp ("a\203", "a\003") > 0, 9);

  {
    char buf1[0x40], buf2[0x40];
    int i, j;
    for (i=0; i < 0x10; i++)
      for (j = 0; j < 0x10; j++)
	{
	  int k;
	  for (k = 0; k < 0x3f; k++)
	    {
	      buf1[k] = '0' ^ (k & 4);
	      buf2[k] = '4' ^ (k & 4);
	    }
	  buf1[i] = buf1[0x3f] = 0;
	  buf2[j] = buf2[0x3f] = 0;
	  for (k = 0; k < 0xf; k++)
	    {
	      int cnum = 0x10+0x10*k+0x100*j+0x1000*i;
	      check (strcmp (buf1+i,buf2+j) == 0, cnum);
	      buf1[i+k] = 'A' + i + k;
	      buf1[i+k+1] = 0;
	      check (strcmp (buf1+i,buf2+j) > 0, cnum+1);
	      check (strcmp (buf2+j,buf1+i) < 0, cnum+2);
	      buf2[j+k] = 'B' + i + k;
	      buf2[j+k+1] = 0;
	      check (strcmp (buf1+i,buf2+j) < 0, cnum+3);
	      check (strcmp (buf2+j,buf1+i) > 0, cnum+4);
	      buf2[j+k] = 'A' + i + k;
	      buf1[i] = 'A' + i + 0x80;
	      check (strcmp (buf1+i,buf2+j) > 0, cnum+5);
	      check (strcmp (buf2+j,buf1+i) < 0, cnum+6);
	      buf1[i] = 'A' + i;
	    }
	}
  }
}

#define SIMPLE_COPY(fn, n, str, ntest) \
  do {									      \
    int __n;								      \
    char *cp;								      \
    for (__n = 0; __n < (int) sizeof (one); ++__n)			      \
      one[__n] = 'Z';							      \
    fn (one, str);							      \
    for (cp = one, __n = 0; __n < n; ++__n, ++cp)			      \
      check (*cp == '0' + (n % 10), ntest);				      \
    check (*cp == '\0', ntest);						      \
  } while (0)

static void
test_strcpy (void)
{
  int i;
  it = "strcpy";
  check (strcpy (one, "abcd") == one, 1); /* Returned value. */
  equal (one, "abcd", 2);		/* Basic test. */

  (void) strcpy (one, "x");
  equal (one, "x", 3);			/* Writeover. */
  equal (one+2, "cd", 4);		/* Wrote too much? */

  (void) strcpy (two, "hi there");
  (void) strcpy (one, two);
  equal (one, "hi there", 5);		/* Basic test encore. */
  equal (two, "hi there", 6);		/* Stomped on source? */

  (void) strcpy (one, "");
  equal (one, "", 7);			/* Boundary condition. */