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/*-
* Public Domain 2014-2016 MongoDB, Inc.
* Public Domain 2008-2014 WiredTiger, Inc.
*
* This is free and unencumbered software released into the public domain.
*
* Anyone is free to copy, modify, publish, use, compile, sell, or
* distribute this software, either in source code form or as a compiled
* binary, for any purpose, commercial or non-commercial, and by any
* means.
*
* In jurisdictions that recognize copyright laws, the author or authors
* of this software dedicate any and all copyright interest in the
* software to the public domain. We make this dedication for the benefit
* of the public at large and to the detriment of our heirs and
* successors. We intend this dedication to be an overt act of
* relinquishment in perpetuity of all present and future rights to this
* software under copyright law.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include "wt_internal.h" /* For __wt_XXX */
#include <assert.h>
void test_value(int64_t);
void test_spread(int64_t, int64_t, int64_t);
void
test_value(int64_t val)
{
const uint8_t *cp;
uint8_t buf[10], *p;
int64_t sinput, soutput;
uint64_t uinput, uoutput;
size_t used_len;
sinput = val;
p = buf;
assert(__wt_vpack_int(&p, sizeof(buf), sinput) == 0);
used_len = (size_t)(p - buf);
cp = buf;
assert(__wt_vunpack_int(&cp, used_len, &soutput) == 0);
/* Ensure we got the correct value back */
if (sinput != soutput) {
fprintf(stderr, "mismatch %" PRIu64 ", %" PRIu64 "\n",
sinput, soutput);
abort();
}
/* Ensure that decoding used the correct amount of buffer */
if (cp != p) {
fprintf(stderr,
"Unpack consumed wrong size for %" PRId64
", expected %" WT_SIZET_FMT ", got %" WT_SIZET_FMT "\n",
sinput, used_len, cp > p ?
used_len + (size_t)(cp - p) : /* More than buf used */
used_len - (size_t)(p - cp)); /* Less than buf used */
abort();
}
/* Test unsigned, convert negative into bigger positive values */
uinput = (uint64_t)val;
p = buf;
assert(__wt_vpack_uint(&p, sizeof(buf), uinput) == 0);
cp = buf;
assert(__wt_vunpack_uint(
&cp, sizeof(buf), &uoutput) == 0);
/* Ensure we got the correct value back */
if (sinput != soutput) {
fprintf(stderr, "mismatch %" PRIu64 ", %" PRIu64 "\n",
sinput, soutput);
abort();
}
/* Ensure that decoding used the correct amount of buffer */
if (cp != p) {
fprintf(stderr,
"Unpack consumed wrong size for %" PRId64
", expected %" WT_SIZET_FMT ", got %" WT_SIZET_FMT "\n",
sinput, used_len, cp > p ?
used_len + (size_t)(cp - p) :
used_len - (size_t)(p - cp));
abort();
}
}
void
test_spread(int64_t start, int64_t before, int64_t after)
{
int64_t i;
printf(
"Testing range: %" PRId64 " to %" PRId64 ". Spread: % " PRId64 "\n",
start - before, start + after, before + after);
for (i = start - before; i < start + after; i++)
test_value(i);
}
int
main(void)
{
int64_t i;
/*
* Test all values in a range, to ensure pack/unpack of small numbers
* (which most actively use different numbers of bits) works.
*/
test_spread(0, 100000, 100000);
test_spread(INT16_MAX, 1025, 1025);
test_spread(INT32_MAX, 1025, 1025);
test_spread(INT64_MAX, 1025, 1025);
/* Test bigger numbers */
for (i = INT64_MAX; i > 0; i = i / 2)
test_spread(i, 1025, 1025);
printf("\n");
return (0);
}
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