forked from boostorg/container_hash
101 lines
2.1 KiB
C++
101 lines
2.1 KiB
C++
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// Copyright 2005-2009 Daniel James.
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#include "./config.hpp"
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#include <boost/config.hpp>
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#include <cstddef>
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namespace test
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{
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struct custom
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{
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int value_;
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std::size_t hash() const
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{
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return value_ * 10;
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}
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#if !defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
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friend std::size_t hash_value(custom const& x )
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{
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return x.hash();
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}
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#endif
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custom(int x) : value_(x) {}
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};
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}
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#if defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
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namespace boost
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{
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std::size_t hash_value(test::custom x)
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{
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return x.hash();
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}
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}
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#endif
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#include "./config.hpp"
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#ifdef TEST_EXTENSIONS
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# ifdef TEST_STD_INCLUDES
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# include <functional>
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# else
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# include <boost/functional/hash.hpp>
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# endif
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#endif
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#include <boost/detail/lightweight_test.hpp>
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#ifdef TEST_EXTENSIONS
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#include <vector>
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#include <string>
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#include <cctype>
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void custom_tests()
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{
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HASH_NAMESPACE::hash<test::custom> custom_hasher;
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BOOST_TEST(custom_hasher(10) == 100u);
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test::custom x(55);
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BOOST_TEST(custom_hasher(x) == 550u);
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{
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using namespace HASH_NAMESPACE;
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BOOST_TEST(custom_hasher(x) == hash_value(x));
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}
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std::vector<test::custom> custom_vector;
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custom_vector.push_back(5);
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custom_vector.push_back(25);
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custom_vector.push_back(35);
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std::size_t seed = 0;
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HASH_NAMESPACE::hash_combine(seed, test::custom(5));
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HASH_NAMESPACE::hash_combine(seed, test::custom(25));
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HASH_NAMESPACE::hash_combine(seed, test::custom(35));
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std::size_t seed2 = 0;
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HASH_NAMESPACE::hash_combine(seed2, 50u);
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HASH_NAMESPACE::hash_combine(seed2, 250u);
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HASH_NAMESPACE::hash_combine(seed2, 350u);
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BOOST_TEST(seed == HASH_NAMESPACE::hash_range(
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custom_vector.begin(), custom_vector.end()));
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BOOST_TEST(seed == seed2);
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}
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#endif // TEST_EXTENSIONS
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int main()
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{
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#ifdef TEST_EXTENSIONS
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custom_tests();
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#endif
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return boost::report_errors();
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}
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