55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
// Copyright (c) 2011-2019 Antony Polukhin
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include "boost/core/lightweight_test.hpp"
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#include "boost/config.hpp"
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#include "boost/variant.hpp"
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#include "boost/functional/hash/hash.hpp"
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#if !defined(BOOST_NO_CXX11_HDR_UNORDERED_SET) && !defined(BOOST_VARIANT_DO_NOT_SPECIALIZE_STD_HASH)
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#include <unordered_set>
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void test_std_hash() {
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std::unordered_set<boost::variant<int, bool> > us;
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us.insert(1);
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us.insert(true);
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BOOST_TEST(us.size() == 2);
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}
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#else
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void test_std_hash() {}
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#endif
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void run() {
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typedef boost::variant<bool, int, unsigned int, char> variant_type;
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boost::hash<variant_type> hasher;
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variant_type bool_variant1 = true;
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variant_type bool_variant2 = false;
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variant_type int_variant = 1;
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variant_type char_variant1 = '\1';
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variant_type char_variant2 = '\2';
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variant_type uint_variant = static_cast<unsigned int>(1);
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BOOST_TEST(hasher(bool_variant1) != hasher(bool_variant2));
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BOOST_TEST(hasher(bool_variant1) == hasher(bool_variant1));
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BOOST_TEST(hasher(int_variant) != hasher(uint_variant));
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BOOST_TEST(hasher(char_variant1) != hasher(uint_variant));
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BOOST_TEST(hasher(char_variant1) != hasher(char_variant2));
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BOOST_TEST(hasher(char_variant1) == hasher(char_variant1));
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BOOST_TEST(hasher(char_variant2) == hasher(char_variant2));
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}
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int main() {
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run();
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test_std_hash();
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return boost::report_errors();
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}
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