114 lines
3.4 KiB
C++
114 lines
3.4 KiB
C++
//
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// Copyright 2005-2007 Adobe Systems Incorporated
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// Copyright 2018 Mateusz Loskot <mateusz at loskot dot net>
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//
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// Distributed under the Boost Software License, Version 1.0
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// See 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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//
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#include <boost/gil/channel_algorithm.hpp>
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#include <type_traits>
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#include <utility>
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#define BOOST_TEST_MODULE test_algorithm_channel_arithmetic
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#include "unit_test.hpp"
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#include "test_fixture.hpp"
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namespace gil = boost::gil;
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namespace fixture = boost::gil::test::fixture;
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template <typename ChannelFixtureBase>
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void test_channel_arithmetic_mutable(boost::mpl::false_) {}
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template <typename ChannelFixtureBase>
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void test_channel_arithmetic_mutable(boost::mpl::true_)
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{
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using fixture_t = fixture::channel<ChannelFixtureBase>;
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using channel_value_t = typename fixture_t::channel_value_t;
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fixture_t f;
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channel_value_t const v = f.min_v_;
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channel_value_t const one = 1;
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++f.min_v_;
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f.min_v_++;
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--f.min_v_;
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f.min_v_--;
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BOOST_TEST(v == f.min_v_);
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f.min_v_ += one;
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f.min_v_ -= one;
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BOOST_TEST(v == f.min_v_);
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f.min_v_ *= one;
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f.min_v_ /= one;
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BOOST_TEST(v == f.min_v_);
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f.min_v_ = one; // assignable to scalar
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BOOST_TEST(f.min_v_ == one);
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f.min_v_ = v; // and to value type
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BOOST_TEST(f.min_v_ == v);
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// test swap
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channel_value_t v1 = f.min_v_;
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channel_value_t v2 = f.max_v_;
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std::swap(f.min_v_, f.max_v_);
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BOOST_TEST(f.min_v_ > f.max_v_);
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channel_value_t v3 = f.min_v_;
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channel_value_t v4 = f.max_v_;
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BOOST_TEST(v1 == v4);
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BOOST_TEST(v2 == v3);
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}
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template <typename ChannelFixtureBase>
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void test_channel_arithmetic()
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{
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using fixture_t = fixture::channel<ChannelFixtureBase>;
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fixture_t f;
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BOOST_TEST(f.min_v_ * 1 == f.min_v_);
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BOOST_TEST(f.min_v_ / 1 == f.min_v_);
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BOOST_TEST((f.min_v_ + 1) + 1 == f.min_v_ + 2);
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BOOST_TEST((f.max_v_ - 1) - 1 == f.max_v_ - 2);
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using is_mutable_t = boost::mpl::bool_
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<
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gil::channel_traits<typename fixture_t::channel_t>::is_mutable
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>;
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test_channel_arithmetic_mutable<ChannelFixtureBase>(is_mutable_t());
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}
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BOOST_AUTO_TEST_CASE_TEMPLATE(channel_value, Channel, fixture::channel_byte_types)
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{
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using fixture_t = fixture::channel_value<Channel>;
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test_channel_arithmetic<fixture_t>();
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}
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BOOST_AUTO_TEST_CASE_TEMPLATE(channel_reference, Channel, fixture::channel_byte_types)
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{
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using fixture_t = fixture::channel_reference<Channel&>;
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test_channel_arithmetic<fixture_t>();
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}
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BOOST_AUTO_TEST_CASE_TEMPLATE(
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channel_reference_const, Channel, fixture::channel_byte_types)
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{
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using fixture_t = fixture::channel_reference<Channel const&>;
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test_channel_arithmetic<fixture_t>();
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}
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BOOST_AUTO_TEST_CASE_TEMPLATE(
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packed_channel_reference, BitField, fixture::channel_bitfield_types)
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{
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using channels565_t = fixture::packed_channels565<BitField>;
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test_channel_arithmetic<typename channels565_t::fixture_0_5_t>();
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test_channel_arithmetic<typename channels565_t::fixture_5_6_t >();
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test_channel_arithmetic<typename channels565_t::fixture_11_5_t>();
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}
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BOOST_AUTO_TEST_CASE_TEMPLATE(
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packed_dynamic_channel_reference, BitField, fixture::channel_bitfield_types)
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{
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using channels565_t = fixture::packed_dynamic_channels565<BitField>;
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test_channel_arithmetic<typename channels565_t::fixture_5_t>();
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test_channel_arithmetic<typename channels565_t::fixture_6_t>();
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}
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