102 lines
3.5 KiB
C++
102 lines
3.5 KiB
C++
/**
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* MIT License
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*
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* Copyright (c) 2017 Thibaut Goetghebuer-Planchon <tessil@gmx.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* 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, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#define BOOST_TEST_DYN_LINK
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#include <boost/test/unit_test.hpp>
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#include <boost/mpl/list.hpp>
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#include <cstddef>
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#include <limits>
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#include <ratio>
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#include <stdexcept>
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#include <tsl/robin_growth_policy.h>
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#include "utils.h"
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BOOST_AUTO_TEST_SUITE(test_policy)
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using test_types = boost::mpl::list<tsl::rh::power_of_two_growth_policy<2>,
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tsl::rh::power_of_two_growth_policy<4>,
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tsl::rh::prime_growth_policy,
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tsl::rh::mod_growth_policy<>,
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tsl::rh::mod_growth_policy<std::ratio<7,2>>>;
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BOOST_AUTO_TEST_CASE_TEMPLATE(test_policy, Policy, test_types) {
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// Call next_bucket_count() on the policy until we reach its max_bucket_count()
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std::size_t bucket_count = 0;
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Policy policy(bucket_count);
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BOOST_CHECK_EQUAL(policy.bucket_for_hash(0), 0);
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BOOST_CHECK_EQUAL(bucket_count, 0);
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#ifndef TSL_RH_NO_EXCEPTIONS
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bool exception_thrown = false;
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try {
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while(true) {
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const std::size_t previous_bucket_count = bucket_count;
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bucket_count = policy.next_bucket_count();
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policy = Policy(bucket_count);
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BOOST_CHECK_EQUAL(policy.bucket_for_hash(0), 0);
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BOOST_CHECK(bucket_count > previous_bucket_count);
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}
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}
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catch(const std::length_error& ) {
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exception_thrown = true;
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}
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BOOST_CHECK(exception_thrown);
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#endif
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}
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BOOST_AUTO_TEST_CASE_TEMPLATE(test_policy_min_bucket_count, Policy, test_types) {
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// Check policy when a bucket_count of 0 is asked.
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std::size_t bucket_count = 0;
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Policy policy(bucket_count);
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BOOST_CHECK_EQUAL(policy.bucket_for_hash(0), 0);
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}
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BOOST_AUTO_TEST_CASE_TEMPLATE(test_policy_max_bucket_count, Policy, test_types) {
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// Test a bucket_count equals to the max_bucket_count limit and above
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std::size_t bucket_count = 0;
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Policy policy(bucket_count);
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bucket_count = policy.max_bucket_count();
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Policy policy2(bucket_count);
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bucket_count = std::numeric_limits<std::size_t>::max();
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TSL_RH_CHECK_THROW((Policy(bucket_count)), std::length_error);
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bucket_count = policy.max_bucket_count() + 1;
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TSL_RH_CHECK_THROW((Policy(bucket_count)), std::length_error);
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}
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BOOST_AUTO_TEST_SUITE_END()
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