boost_unordered/test/unordered/bucket_tests.cpp

// Copyright 2006-2009 Daniel James.
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

// clang-format off
#include "../helpers/prefix.hpp"
#include <boost/unordered_set.hpp>
#include <boost/unordered_map.hpp>
#include "../helpers/postfix.hpp"
// clang-format on

#include "../helpers/test.hpp"
#include <algorithm>
#include "../objects/test.hpp"
#include "../helpers/random_values.hpp"
#include "../helpers/helpers.hpp"

#if BOOST_WORKAROUND(BOOST_MSVC, < 1400)
#pragma warning(disable : 4267) // conversion from 'size_t' to 'unsigned int',
                                // possible loss of data.
#endif

namespace bucket_tests {

test::seed_t initialize_seed(54635);

template <class X> void tests(X*, test::random_generator generator)
{
    test::check_instances check_;

    typedef BOOST_DEDUCED_TYPENAME X::size_type size_type;
    typedef BOOST_DEDUCED_TYPENAME X::const_local_iterator const_local_iterator;
    test::random_values<X> v(1000, generator);

    X x(v.begin(), v.end());

    BOOST_TEST(x.bucket_count() <= x.max_bucket_count());
    if (!(x.bucket_count() <= x.max_bucket_count())) {
        std::cerr << x.bucket_count() << "<=" << x.max_bucket_count() << "\n";
    }

    for (BOOST_DEDUCED_TYPENAME test::random_values<X>::const_iterator
             it = v.begin(),
             end = v.end();
         it != end; ++it) {
        size_type bucket = x.bucket(test::get_key<X>(*it));

        BOOST_TEST(bucket < x.bucket_count());
        if (bucket < x.bucket_count()) {
            // lit? lend?? I need a new naming scheme.
            const_local_iterator lit = x.begin(bucket), lend = x.end(bucket);
            while (lit != lend &&
                   test::get_key<X>(*it) != test::get_key<X>(*lit)) {
                ++lit;
            }
            BOOST_TEST(lit != lend);
        }
    }

    for (size_type i = 0; i < x.bucket_count(); ++i) {
        BOOST_TEST(x.bucket_size(i) ==
                   static_cast<size_type>(std::distance(x.begin(i), x.end(i))));
        BOOST_TEST(x.bucket_size(i) == static_cast<size_type>(std::distance(
                                           x.cbegin(i), x.cend(i))));
        X const& x_ref = x;
        BOOST_TEST(x.bucket_size(i) == static_cast<size_type>(std::distance(
                                           x_ref.begin(i), x_ref.end(i))));
        BOOST_TEST(x.bucket_size(i) == static_cast<size_type>(std::distance(
                                           x_ref.cbegin(i), x_ref.cend(i))));
    }
}

boost::unordered_multimap<test::object, test::object, test::hash,
    test::equal_to, std::allocator<test::object> >* test_multimap_std_alloc;

boost::unordered_set<test::object, test::hash, test::equal_to,
    test::allocator2<test::object> >* test_set;
boost::unordered_multiset<test::object, test::hash, test::equal_to,
    test::allocator1<test::object> >* test_multiset;
boost::unordered_map<test::object, test::object, test::hash, test::equal_to,
    test::allocator1<test::object> >* test_map;
boost::unordered_multimap<test::object, test::object, test::hash,
    test::equal_to, test::allocator2<test::object> >* test_multimap;

using test::default_generator;
using test::generate_collisions;
using test::limited_range;

UNORDERED_TEST(tests, ((test_multimap_std_alloc)(test_set)(test_multiset)(
                          test_map)(test_multimap))((default_generator)(
                          generate_collisions)(limited_range)))
}

RUN_TESTS()