mirror of https://gitee.com/bigwinds/arangodb
162 lines
6.5 KiB
C++
162 lines
6.5 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief test suite for mersenne.c
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2012 triagens GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is triAGENS GmbH, Cologne, Germany
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///
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/// @author Jan Steemann
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/// @author Copyright 2012, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#include <boost/test/unit_test.hpp>
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#include "BasicsC/mersenne.h"
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// -----------------------------------------------------------------------------
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// --SECTION-- setup / tear-down
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// -----------------------------------------------------------------------------
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struct CMersenneSetup {
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CMersenneSetup () {
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BOOST_TEST_MESSAGE("setup mersenne");
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TRI_InitialiseMersenneTwister();
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}
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~CMersenneSetup () {
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BOOST_TEST_MESSAGE("tear-down mersenne");
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}
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};
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// -----------------------------------------------------------------------------
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// --SECTION-- test suite
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief setup
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////////////////////////////////////////////////////////////////////////////////
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BOOST_FIXTURE_TEST_SUITE(CMersenneTest, CMersenneSetup)
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////////////////////////////////////////////////////////////////////////////////
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/// @brief test mersenne int32
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////////////////////////////////////////////////////////////////////////////////
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BOOST_AUTO_TEST_CASE (tst_mersenne_int32) {
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for (size_t i = 0; i < 100; ++i) {
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int64_t value = (int64_t) TRI_Int32MersenneTwister();
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BOOST_CHECK_EQUAL(true, value >= 0);
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BOOST_CHECK_EQUAL(true, value <= UINT32_MAX);
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief test mersenne int31
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////////////////////////////////////////////////////////////////////////////////
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BOOST_AUTO_TEST_CASE (tst_mersenne_int31) {
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for (size_t i = 0; i < 100; ++i) {
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int64_t value = (int64_t) TRI_Int31MersenneTwister();
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BOOST_CHECK_EQUAL(true, value >= 0);
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BOOST_CHECK_EQUAL(true, value <= INT32_MAX);
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief test after explicit seed
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////////////////////////////////////////////////////////////////////////////////
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BOOST_AUTO_TEST_CASE (tst_mersenne_seed) {
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TRI_SeedMersenneTwister((uint32_t) 0UL);
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BOOST_CHECK_EQUAL((uint32_t) 2357136044UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 2546248239UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 3071714933UL, TRI_Int32MersenneTwister());
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TRI_SeedMersenneTwister((uint32_t) 1UL);
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BOOST_CHECK_EQUAL((uint32_t) 1791095845UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 4282876139UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 3093770124UL, TRI_Int32MersenneTwister());
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TRI_SeedMersenneTwister((uint32_t) 2UL);
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BOOST_CHECK_EQUAL((uint32_t) 1872583848UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 794921487UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 111352301UL, TRI_Int32MersenneTwister());
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TRI_SeedMersenneTwister((uint32_t) 23UL);
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BOOST_CHECK_EQUAL((uint32_t) 2221777491UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 2873750246UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 4067173416UL, TRI_Int32MersenneTwister());
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TRI_SeedMersenneTwister((uint32_t) 42UL);
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BOOST_CHECK_EQUAL((uint32_t) 1608637542UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 3421126067UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 4083286876UL, TRI_Int32MersenneTwister());
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TRI_SeedMersenneTwister((uint32_t) 458735UL);
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BOOST_CHECK_EQUAL((uint32_t) 1537542272UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 4131475792UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 2280116031UL, TRI_Int32MersenneTwister());
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TRI_SeedMersenneTwister((uint32_t) 395568682893UL);
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BOOST_CHECK_EQUAL((uint32_t) 2297195664UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 2381406737UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 4184846092UL, TRI_Int32MersenneTwister());
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief test after explicit seed, repeated calls
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////////////////////////////////////////////////////////////////////////////////
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BOOST_AUTO_TEST_CASE (tst_mersenne_reseed) {
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TRI_SeedMersenneTwister((uint32_t) 23UL);
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BOOST_CHECK_EQUAL((uint32_t) 2221777491UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 2873750246UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 4067173416UL, TRI_Int32MersenneTwister());
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// re-seed with same value and compare
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TRI_SeedMersenneTwister((uint32_t) 23UL);
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BOOST_CHECK_EQUAL((uint32_t) 2221777491UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 2873750246UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 4067173416UL, TRI_Int32MersenneTwister());
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// seed with different value
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TRI_SeedMersenneTwister((uint32_t) 458735UL);
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BOOST_CHECK_EQUAL((uint32_t) 1537542272UL, TRI_Int32MersenneTwister());
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// re-seed with original value and compare
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TRI_SeedMersenneTwister((uint32_t) 23UL);
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BOOST_CHECK_EQUAL((uint32_t) 2221777491UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 2873750246UL, TRI_Int32MersenneTwister());
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BOOST_CHECK_EQUAL((uint32_t) 4067173416UL, TRI_Int32MersenneTwister());
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief generate tests
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////////////////////////////////////////////////////////////////////////////////
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BOOST_AUTO_TEST_SUITE_END ()
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "^\\(/// @brief\\|/// {@inheritDoc}\\|/// @addtogroup\\|// --SECTION--\\|/// @\\}\\)"
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// End:
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