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/*
* nghttp2 - HTTP/2 C Library
*
* Copyright (c) 2023 nghttp2 contributors
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* 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 OR COPYRIGHT HOLDERS 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 "nghttp2_ratelim_test.h"
#include <stdio.h>
#include <CUnit/CUnit.h>
#include "nghttp2_ratelim.h"
void test_nghttp2_ratelim_update(void) {
nghttp2_ratelim rl;
nghttp2_ratelim_init(&rl, 1000, 21);
CU_ASSERT(1000 == rl.val);
CU_ASSERT(1000 == rl.burst);
CU_ASSERT(21 == rl.rate);
CU_ASSERT(0 == rl.tstamp);
nghttp2_ratelim_update(&rl, 999);
CU_ASSERT(1000 == rl.val);
CU_ASSERT(999 == rl.tstamp);
nghttp2_ratelim_drain(&rl, 100);
CU_ASSERT(900 == rl.val);
nghttp2_ratelim_update(&rl, 1000);
CU_ASSERT(921 == rl.val);
nghttp2_ratelim_update(&rl, 1002);
CU_ASSERT(963 == rl.val);
nghttp2_ratelim_update(&rl, 1004);
CU_ASSERT(1000 == rl.val);
CU_ASSERT(1004 == rl.tstamp);
/* timer skew */
nghttp2_ratelim_init(&rl, 1000, 21);
nghttp2_ratelim_update(&rl, 1);
CU_ASSERT(1000 == rl.val);
nghttp2_ratelim_update(&rl, 0);
CU_ASSERT(1000 == rl.val);
/* rate * duration overflow */
nghttp2_ratelim_init(&rl, 1000, 100);
nghttp2_ratelim_drain(&rl, 999);
CU_ASSERT(1 == rl.val);
nghttp2_ratelim_update(&rl, UINT64_MAX);
CU_ASSERT(1000 == rl.val);
/* val + rate * duration overflow */
nghttp2_ratelim_init(&rl, UINT64_MAX - 1, 2);
nghttp2_ratelim_update(&rl, 1);
CU_ASSERT(UINT64_MAX - 1 == rl.val);
}
void test_nghttp2_ratelim_drain(void) {
nghttp2_ratelim rl;
nghttp2_ratelim_init(&rl, 100, 7);
CU_ASSERT(-1 == nghttp2_ratelim_drain(&rl, 101));
CU_ASSERT(0 == nghttp2_ratelim_drain(&rl, 51));
CU_ASSERT(0 == nghttp2_ratelim_drain(&rl, 49));
CU_ASSERT(-1 == nghttp2_ratelim_drain(&rl, 1));
}
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