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/*
* librdkafka - The Apache Kafka C/C++ library
*
* Copyright (c) 2016 Magnus Edenhill
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "rdvarint.h"
#include "rdunittest.h"
static int do_test_rd_uvarint_enc_i64(const char *file,
int line,
int64_t num,
const char *exp,
size_t exp_size) {
char buf[16] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
size_t sz = rd_uvarint_enc_i64(buf, sizeof(buf), num);
size_t r;
int ir;
rd_buf_t b;
rd_slice_t slice, bad_slice;
int64_t ret_num;
if (sz != exp_size || memcmp(buf, exp, exp_size))
RD_UT_FAIL("i64 encode of %" PRId64
": "
"expected size %" PRIusz " (got %" PRIusz ")\n",
num, exp_size, sz);
/* Verify with standard decoder */
r = rd_varint_dec_i64(buf, sz, &ret_num);
RD_UT_ASSERT(!RD_UVARINT_DEC_FAILED(r),
"varint decode failed: %" PRIusz, r);
RD_UT_ASSERT(ret_num == num,
"varint decode returned wrong number: "
"%" PRId64 " != %" PRId64,
ret_num, num);
/* Verify with slice decoder */
rd_buf_init(&b, 1, 0);
rd_buf_push(&b, buf, sizeof(buf), NULL); /* including trailing 0xff
* garbage which should be
* ignored by decoder */
rd_slice_init_full(&slice, &b);
/* Should fail for incomplete reads */
ir = rd_slice_narrow_copy(&slice, &bad_slice, sz - 1);
RD_UT_ASSERT(ir, "narrow_copy failed");
ret_num = -1;
r = rd_slice_read_varint(&bad_slice, &ret_num);
RD_UT_ASSERT(RD_UVARINT_DEC_FAILED(r),
"varint decode failed should have failed, "
"returned %" PRIusz,
r);
r = rd_slice_offset(&bad_slice);
RD_UT_ASSERT(r == 0,
"expected slice position to not change, but got %" PRIusz,
r);
/* Verify proper slice */
ret_num = -1;
r = rd_slice_read_varint(&slice, &ret_num);
RD_UT_ASSERT(!RD_UVARINT_DEC_FAILED(r),
"varint decode failed: %" PRIusz, r);
RD_UT_ASSERT(ret_num == num,
"varint decode returned wrong number: "
"%" PRId64 " != %" PRId64,
ret_num, num);
RD_UT_ASSERT(r == sz,
"expected varint decoder to read %" PRIusz
" bytes, "
"not %" PRIusz,
sz, r);
r = rd_slice_offset(&slice);
RD_UT_ASSERT(r == sz,
"expected slice position to change to %" PRIusz
", but got %" PRIusz,
sz, r);
rd_buf_destroy(&b);
RD_UT_PASS();
}
int unittest_rdvarint(void) {
int fails = 0;
fails += do_test_rd_uvarint_enc_i64(__FILE__, __LINE__, 0,
(const char[]) {0}, 1);
fails += do_test_rd_uvarint_enc_i64(__FILE__, __LINE__, 1,
(const char[]) {0x2}, 1);
fails += do_test_rd_uvarint_enc_i64(__FILE__, __LINE__, -1,
(const char[]) {0x1}, 1);
fails += do_test_rd_uvarint_enc_i64(__FILE__, __LINE__, 23,
(const char[]) {0x2e}, 1);
fails += do_test_rd_uvarint_enc_i64(__FILE__, __LINE__, -23,
(const char[]) {0x2d}, 1);
fails += do_test_rd_uvarint_enc_i64(__FILE__, __LINE__, 253,
(const char[]) {0xfa, 3}, 2);
fails += do_test_rd_uvarint_enc_i64(
__FILE__, __LINE__, 1234567890101112,
(const char[]) {0xf0, 0x8d, 0xd3, 0xc8, 0xa7, 0xb5, 0xb1, 0x04}, 8);
fails += do_test_rd_uvarint_enc_i64(
__FILE__, __LINE__, -1234567890101112,
(const char[]) {0xef, 0x8d, 0xd3, 0xc8, 0xa7, 0xb5, 0xb1, 0x04}, 8);
return fails;
}
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