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- //////////////////////////////////////////////////////////////////////////////
- //
- // (C) Copyright Ion Gaztanaga 2004-2013. 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)
- //
- // See http://www.boost.org/libs/container for documentation.
- //
- //////////////////////////////////////////////////////////////////////////////
- #include <boost/container/small_vector.hpp>
- #include <boost/core/lightweight_test.hpp>
- #include <boost/assert.hpp>
- using namespace boost::container;
- const std::size_t Capacity = 10u;
- void test_alignment()
- {
- { //extended alignment
- const std::size_t extended_alignment = sizeof(int)*4u;
- BOOST_STATIC_ASSERT(extended_alignment > dtl::alignment_of<int>::value);
- #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
- using options_t = small_vector_options_t< inplace_alignment<extended_alignment> >;
- #else
- typedef small_vector_options
- < inplace_alignment<extended_alignment> >::type options_t;
- #endif
- small_vector<int, Capacity, void, options_t> v;
- v.resize(v.capacity());
- BOOST_ASSERT((reinterpret_cast<std::size_t>(&v[0]) % extended_alignment) == 0);
- }
- { //default alignment
- #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
- using options_t = small_vector_options_t< inplace_alignment<0> >;
- #else
- typedef small_vector_options< inplace_alignment<0> >::type options_t;
- #endif
- small_vector<int, Capacity, void, options_t> v;
- v.resize(v.capacity());
- BOOST_ASSERT((reinterpret_cast<std::size_t>(&v[0]) % dtl::alignment_of<int>::value) == 0);
- }
- }
- void test_growth_factor_50()
- {
- #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
- using options_t = small_vector_options_t< growth_factor<growth_factor_50> >;
- #else
- typedef small_vector_options
- < growth_factor<growth_factor_50> >::type options_t;
- #endif
- small_vector<int, Capacity, new_allocator<int>, options_t> v;
- v.resize(5);
- v.resize(v.capacity());
- std::size_t old_capacity = v.capacity();
- v.push_back(0);
- std::size_t new_capacity = v.capacity();
- BOOST_TEST(new_capacity == old_capacity + old_capacity/2);
- }
- void test_growth_factor_60()
- {
- #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
- using options_t = small_vector_options_t< growth_factor<growth_factor_60> >;
- #else
- typedef small_vector_options
- < growth_factor<growth_factor_60> >::type options_t;
- #endif
- small_vector<int, Capacity, new_allocator<int>, options_t> v;
- v.resize(5);
- v.resize(v.capacity());
- std::size_t old_capacity = v.capacity();
- v.push_back(0);
- std::size_t new_capacity = v.capacity();
- BOOST_TEST(new_capacity == old_capacity + 3*old_capacity/5);
- }
- void test_growth_factor_100()
- {
- #if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
- using options_t = small_vector_options_t< growth_factor<growth_factor_100> >;
- #else
- typedef small_vector_options
- < growth_factor<growth_factor_100> >::type options_t;
- #endif
- small_vector<int, Capacity, new_allocator<int>, options_t> v;
- v.resize(5);
- v.resize(v.capacity());
- std::size_t old_capacity = v.capacity();
- v.push_back(0);
- std::size_t new_capacity = v.capacity();
- BOOST_TEST(new_capacity == 2*old_capacity);
- }
- int main()
- {
- test_alignment();
- test_growth_factor_50();
- test_growth_factor_60();
- test_growth_factor_100();
- return ::boost::report_errors();
- }
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