2014-12-23 16:05:45 +01:00
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/*
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* nghttp2 - HTTP/2 C Library
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*
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* Copyright (c) 2014 Tatsuhiro Tsujikawa
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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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
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "ringbuf_test.h"
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#include <cstring>
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#include <iostream>
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2015-01-05 08:20:35 +01:00
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#include <tuple>
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2014-12-23 16:05:45 +01:00
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#include <CUnit/CUnit.h>
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#include <nghttp2/nghttp2.h>
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#include "ringbuf.h"
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namespace nghttp2 {
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void test_ringbuf_write(void) {
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RingBuf<16> b;
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CU_ASSERT(0 == b.rleft());
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CU_ASSERT(16 == b.wleft());
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b.write("012", 3);
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CU_ASSERT(3 == b.rleft());
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CU_ASSERT(13 == b.wleft());
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CU_ASSERT(0 == b.pos);
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CU_ASSERT(3 == b.len);
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b.drain(3);
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CU_ASSERT(0 == b.rleft());
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CU_ASSERT(16 == b.wleft());
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CU_ASSERT(3 == b.pos);
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CU_ASSERT(0 == b.len);
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b.write("0123456789ABCDEF", 16);
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CU_ASSERT(16 == b.rleft());
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CU_ASSERT(0 == b.wleft());
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CU_ASSERT(3 == b.pos);
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CU_ASSERT(16 == b.len);
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CU_ASSERT(0 == memcmp(b.begin, "DEF0123456789ABC", 16));
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const void *p;
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size_t len;
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std::tie(p, len) = b.get();
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CU_ASSERT(13 == len);
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CU_ASSERT(0 == memcmp(p, "0123456789ABC", len));
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b.drain(14);
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CU_ASSERT(2 == b.rleft());
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CU_ASSERT(14 == b.wleft());
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CU_ASSERT(1 == b.pos);
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CU_ASSERT(2 == b.len);
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std::tie(p, len) = b.get();
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CU_ASSERT(2 == len);
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CU_ASSERT(0 == memcmp(p, "EF", len));
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}
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void test_ringbuf_iovec(void) {
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RingBuf<16> b;
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struct iovec iov[2];
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auto rv = b.riovec(iov);
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CU_ASSERT(0 == rv);
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rv = b.wiovec(iov);
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CU_ASSERT(1 == rv);
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CU_ASSERT(b.begin == iov[0].iov_base);
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CU_ASSERT(16 == iov[0].iov_len);
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// set pos to somewhere middle of the buffer, this will require 2
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// iovec for writing.
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b.pos = 6;
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rv = b.riovec(iov);
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CU_ASSERT(0 == rv);
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rv = b.wiovec(iov);
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CU_ASSERT(2 == rv);
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CU_ASSERT(b.begin + b.pos == iov[0].iov_base);
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CU_ASSERT(10 == iov[0].iov_len);
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CU_ASSERT(b.begin == iov[1].iov_base);
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CU_ASSERT(6 == iov[1].iov_len);
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// occupy first region of buffer
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b.pos = 0;
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b.len = 10;
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rv = b.riovec(iov);
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CU_ASSERT(1 == rv);
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CU_ASSERT(b.begin == iov[0].iov_base);
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CU_ASSERT(10 == iov[0].iov_len);
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rv = b.wiovec(iov);
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CU_ASSERT(1 == rv);
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CU_ASSERT(b.begin + b.len == iov[0].iov_base);
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CU_ASSERT(6 == iov[0].iov_len);
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// occupy last region of buffer
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b.pos = 6;
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b.len = 10;
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rv = b.riovec(iov);
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CU_ASSERT(1 == rv);
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CU_ASSERT(b.begin + b.pos == iov[0].iov_base);
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CU_ASSERT(10 == iov[0].iov_len);
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rv = b.wiovec(iov);
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CU_ASSERT(1 == rv);
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CU_ASSERT(b.begin == iov[0].iov_base);
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CU_ASSERT(6 == iov[0].iov_len);
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// occupy middle of buffer
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b.pos = 3;
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b.len = 10;
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rv = b.riovec(iov);
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CU_ASSERT(1 == rv);
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CU_ASSERT(b.begin + b.pos == iov[0].iov_base);
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CU_ASSERT(10 == iov[0].iov_len);
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rv = b.wiovec(iov);
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CU_ASSERT(2 == rv);
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CU_ASSERT(b.begin + b.pos + b.len == iov[0].iov_base);
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CU_ASSERT(3 == iov[0].iov_len);
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CU_ASSERT(b.begin == iov[1].iov_base);
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CU_ASSERT(3 == iov[1].iov_len);
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// crossover
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b.pos = 13;
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b.len = 10;
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rv = b.riovec(iov);
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CU_ASSERT(2 == rv);
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CU_ASSERT(b.begin + b.pos == iov[0].iov_base);
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CU_ASSERT(3 == iov[0].iov_len);
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CU_ASSERT(b.begin == iov[1].iov_base);
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CU_ASSERT(7 == iov[1].iov_len);
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rv = b.wiovec(iov);
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CU_ASSERT(1 == rv);
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CU_ASSERT(b.begin + 7 == iov[0].iov_base);
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CU_ASSERT(6 == iov[0].iov_len);
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}
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} // namespace nghttp2
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