forked from boostorg/unordered
118 lines
2.8 KiB
C++
118 lines
2.8 KiB
C++
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// Copyright 2006-2009 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 "../helpers/prefix.hpp"
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#include <boost/unordered_set.hpp>
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#include <boost/unordered_map.hpp>
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#include "../helpers/test.hpp"
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#include "../helpers/random_values.hpp"
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#include "../helpers/tracker.hpp"
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namespace rehash_tests
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{
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test::seed_t seed(2974);
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template <class X>
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bool postcondition(X const& x, BOOST_DEDUCED_TYPENAME X::size_type n)
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{
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return x.bucket_count() > x.size() / x.max_load_factor() && x.bucket_count() >= n;
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}
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template <class X>
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void rehash_empty_test1(X* = 0)
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{
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X x;
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x.rehash(10000);
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BOOST_TEST(postcondition(x, 10000));
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x.rehash(0);
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BOOST_TEST(postcondition(x, 0));
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}
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template <class X>
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void rehash_empty_test2(X* = 0, test::random_generator generator = test::default_generator)
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{
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test::random_values<X> v(1000, generator);
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test::ordered<X> tracker;
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X x;
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x.rehash(10000);
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BOOST_TEST(postcondition(x, 10000));
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tracker.insert_range(v.begin(), v.end());
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x.insert(v.begin(), v.end());
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tracker.compare(x);
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BOOST_TEST(postcondition(x, 10000));
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}
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template <class X>
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void rehash_empty_test3(X* = 0, test::random_generator generator = test::default_generator)
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{
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test::random_values<X> v(1000, generator);
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test::ordered<X> tracker;
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X x;
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x.rehash(0);
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BOOST_TEST(postcondition(x, 0));
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tracker.insert_range(v.begin(), v.end());
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x.insert(v.begin(), v.end());
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tracker.compare(x);
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BOOST_TEST(postcondition(x, 0));
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}
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template <class X>
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void rehash_test1(X* = 0, test::random_generator generator = test::default_generator)
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{
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test::random_values<X> v(1000, generator);
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test::ordered<X> tracker;
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tracker.insert_range(v.begin(), v.end());
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X x(v.begin(), v.end());
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x.rehash(0); BOOST_TEST(postcondition(x, 0));
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tracker.compare(x);
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x.max_load_factor(0.25);
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x.rehash(0); BOOST_TEST(postcondition(x, 0));
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tracker.compare(x);
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x.max_load_factor(50.0);
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x.rehash(0); BOOST_TEST(postcondition(x, 0));
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tracker.compare(x);
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x.rehash(1000); BOOST_TEST(postcondition(x, 1000));
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tracker.compare(x);
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}
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boost::unordered_set<int>* int_set_ptr;
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boost::unordered_multiset<int>* int_multiset_ptr;
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boost::unordered_map<int, int>* int_map_ptr;
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boost::unordered_multimap<int, int>* int_multimap_ptr;
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UNORDERED_TEST(rehash_empty_test1,
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((int_set_ptr)(int_multiset_ptr)(int_map_ptr)(int_multimap_ptr))
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)
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UNORDERED_TEST(rehash_empty_test2,
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((int_set_ptr)(int_multiset_ptr)(int_map_ptr)(int_multimap_ptr))
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)
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UNORDERED_TEST(rehash_empty_test3,
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((int_set_ptr)(int_multiset_ptr)(int_map_ptr)(int_multimap_ptr))
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)
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UNORDERED_TEST(rehash_test1,
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((int_set_ptr)(int_multiset_ptr)(int_map_ptr)(int_multimap_ptr))
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)
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}
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RUN_TESTS()
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