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authorRoland McGrath <roland@gnu.org>2002-11-07 19:15:01 +0000
committerRoland McGrath <roland@gnu.org>2002-11-07 19:15:01 +0000
commit58ef9ef7bcbe3df172d9ff5fa840a63d89a19df4 (patch)
tree707f53302db4e5a0d10362716902c53222dfb939 /string/test-strncpy.c
parentcbf900b43010058d8489ce32ae43fb06a66410c1 (diff)
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* string/test-string.h: New file.
* string/test-strlen.c: New file. * string/test-string.h: New file. * string/test-strcmp.c: New file. * string/test-strchr.c: New file. * string/test-strrchr.c: New file. * string/test-strcpy.c: New file. * string/test-stpcpy.c: New file. * string/test-strncpy.c: New file. * string/test-stpncpy.c: New file. * string/test-strpbrk.c: New file. * string/test-strcspn.c: New file. * string/test-strspn.c: New file. * string/test-strcat.c: New file. * string/test-strncmp.c: New file. * string/test-memchr.c: New file. * string/test-memcmp.c: New file. * string/test-memset.c: New file. * string/test-memcpy.c: New file. * string/test-mempcpy.c: New file. * string/test-memmove.c: New file. * string/Makefile (strop-tests): New variable. (tests): Add strop-tests. (distribute): Add test-string.h.
Diffstat (limited to 'string/test-strncpy.c')
-rw-r--r--string/test-strncpy.c264
1 files changed, 264 insertions, 0 deletions
diff --git a/string/test-strncpy.c b/string/test-strncpy.c
new file mode 100644
index 0000000000..5aa51692bb
--- /dev/null
+++ b/string/test-strncpy.c
@@ -0,0 +1,264 @@
+/* Test and measure strncpy functions.
+ Copyright (C) 1999, 2002 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Written by Jakub Jelinek <jakub@redhat.com>, 1999.
+
+ 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 STRNCPY_RESULT
+# define STRNCPY_RESULT(dst, len, n) dst
+# define TEST_MAIN
+# include "test-string.h"
+
+char *simple_strncpy (char *, const char *, size_t);
+
+IMPL (simple_strncpy, 0)
+IMPL (strncpy, 1)
+
+char *
+simple_strncpy (char *dst, const char *src, size_t n)
+{
+ char *ret = dst;
+ while (n--)
+ if ((*dst++ = *src++) == '\0')
+ {
+ while (n--)
+ *dst++ = '\0';
+ return ret;
+ }
+ return ret;
+}
+#endif
+
+typedef char *(*proto_t) (char *, const char *, size_t);
+
+static void
+do_one_test (impl_t *impl, char *dst, const char *src, size_t len, size_t n)
+{
+ if (CALL (impl, dst, src, n) != STRNCPY_RESULT (dst, len, n))
+ {
+ error (0, 0, "Wrong result in function %s %p %p", impl->name,
+ CALL (impl, dst, src, n), dst);
+ ret = 1;
+ return;
+ }
+
+ if (memcmp (dst, src, len > n ? n : len) != 0)
+ {
+ error (0, 0, "Wrong result in function %s", impl->name);
+ ret = 1;
+ return;
+ }
+
+ if (n > len)
+ {
+ size_t i;
+
+ for (i = len; i < n; ++i)
+ if (dst [i] != '\0')
+ {
+ error (0, 0, "Wrong result in function %s", impl->name);
+ ret = 1;
+ return;
+ }
+ }
+
+ if (HP_TIMING_AVAIL)
+ {
+ hp_timing_t start, stop, best_time = ~ (hp_timing_t) 0;
+ size_t i;
+
+ for (i = 0; i < 32; ++i)
+ {
+ HP_TIMING_NOW (start);
+ CALL (impl, dst, src, n);
+ HP_TIMING_NOW (stop);
+ HP_TIMING_BEST (best_time, start, stop);
+ }
+
+ printf ("\t%zd", (size_t) best_time);
+ }
+}
+
+static void
+do_test (size_t align1, size_t align2, size_t len, size_t n, int max_char)
+{
+ size_t i;
+ char *s1, *s2;
+
+ align1 &= 7;
+ if (align1 + len >= page_size)
+ return;
+
+ align2 &= 7;
+ if (align2 + len >= page_size)
+ return;
+
+ s1 = buf1 + align1;
+ s2 = buf2 + align2;
+
+ for (i = 0; i < len; ++i)
+ s1[i] = 32 + 23 * i % (max_char - 32);
+ s1[len] = 0;
+ for (i = len + 1; i + align1 < page_size && i < len + 64; ++i)
+ s1[i] = 32 + 32 * i % (max_char - 32);
+
+ if (HP_TIMING_AVAIL)
+ printf ("Length %4zd, n %4zd, alignment %2zd/%2zd:", len, n, align1, align2);
+
+ FOR_EACH_IMPL (impl, 0)
+ do_one_test (impl, s2, s1, len, n);
+
+ if (HP_TIMING_AVAIL)
+ putchar ('\n');
+}
+
+static void
+do_random_tests (void)
+{
+ size_t i, j, n, align1, align2, len, size;
+ unsigned char *p1 = buf1 + page_size - 512;
+ unsigned char *p2 = buf2 + page_size - 512;
+ unsigned char *res;
+
+ for (n = 0; n < ITERATIONS; n++)
+ {
+ align1 = random () & 31;
+ if (random () & 1)
+ align2 = random () & 31;
+ else
+ align2 = align1 + (random () & 24);
+ len = random () & 511;
+ j = align1;
+ if (align2 > j)
+ j = align2;
+ if (random () & 1)
+ {
+ size = random () & 511;
+ if (size + align2 > 512)
+ size = 512 - align2 - (random() & 31);
+ }
+ else
+ size = 512 - align2;
+ if (len + j >= 511)
+ len = 510 - j - (random () & 7);
+ j = len + align1 + 64;
+ if (j > 512)
+ j = 512;
+ for (i = 0; i < j; i++)
+ {
+ if (i == len + align1)
+ p1[i] = 0;
+ else
+ {
+ p1[i] = random () & 255;
+ if (i >= align1 && i < len + align1 && !p1[i])
+ p1[i] = (random () & 127) + 3;
+ }
+ }
+
+ FOR_EACH_IMPL (impl, 1)
+ {
+ memset (p2 - 64, '\1', 512 + 64);
+ res = CALL (impl, p2 + align2, p1 + align1, size);
+ if (res != STRNCPY_RESULT (p2 + align2, len, size))
+ {
+ error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p",
+ n, impl->name, align1, align2, len, res,
+ STRNCPY_RESULT (p2 + align2, len, size));
+ ret = 1;
+ }
+ for (j = 0; j < align2 + 64; ++j)
+ {
+ if (p2[j - 64] != '\1')
+ {
+ error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd)",
+ n, impl->name, align1, align2, len);
+ ret = 1;
+ break;
+ }
+ }
+ j = align2 + len + 1;
+ if (size + align2 > j)
+ j = size + align2;
+ for (; j < 512; ++j)
+ {
+ if (p2[j] != '\1')
+ {
+ error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd)",
+ n, impl->name, align1, align2, len);
+ ret = 1;
+ break;
+ }
+ }
+ for (j = align2 + len + 1; j < align2 + size; ++j)
+ if (p2[j])
+ {
+ error (0, 0, "Iteration %zd - garbage after size, %s (%zd, %zd, %zd)",
+ n, impl->name, align1, align2, len);
+ ret = 1;
+ break;
+ }
+ j = len + 1;
+ if (size < j)
+ j = size;
+ if (memcmp (p1 + align1, p2 + align2, j))
+ {
+ error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd)",
+ n, impl->name, align1, align2, len);
+ ret = 1;
+ }
+ }
+ }
+}
+
+int
+test_main (void)
+{
+ size_t i;
+
+ test_init ();
+
+ printf ("%28s", "");
+ FOR_EACH_IMPL (impl, 0)
+ printf ("\t%s", impl->name);
+ putchar ('\n');
+
+ for (i = 1; i < 8; ++i)
+ {
+ do_test (i, i, 16, 16, 127);
+ do_test (i, i, 16, 16, 255);
+ do_test (i, 2 * i, 16, 16, 127);
+ do_test (2 * i, i, 16, 16, 255);
+ do_test (8 - i, 2 * i, 1 << i, 2 << i, 127);
+ do_test (2 * i, 8 - i, 2 << i, 1 << i, 127);
+ do_test (8 - i, 2 * i, 1 << i, 2 << i, 255);
+ do_test (2 * i, 8 - i, 2 << i, 1 << i, 255);
+ }
+
+ for (i = 1; i < 8; ++i)
+ {
+ do_test (0, 0, 4 << i, 8 << i, 127);
+ do_test (0, 0, 16 << i, 8 << i, 127);
+ do_test (8 - i, 2 * i, 4 << i, 8 << i, 127);
+ do_test (8 - i, 2 * i, 16 << i, 8 << i, 127);
+ }
+
+ do_random_tests ();
+ return ret;
+}
+
+#include "../test-skeleton.c"