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