Sprout/libs/algorithm/test/rotate_copy.cpp

/*=============================================================================
  Copyright (c) 2011-2019 Bolero MURAKAMI
  https://github.com/bolero-MURAKAMI/Sprout

  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)
=============================================================================*/
#ifndef SPROUT_LIBS_ALGORITHM_TEST_ROTATE_COPY_CPP
#define SPROUT_LIBS_ALGORITHM_TEST_ROTATE_COPY_CPP

#include <sprout/algorithm/rotate_copy.hpp>
#include <sprout/array.hpp>
#include <sprout/sub_array.hpp>
#include <sprout/container.hpp>
#include <testspr/tools.hpp>

namespace testspr {
	static void algorithm_rotate_copy_test() {
		using namespace sprout;
		{
			SPROUT_STATIC_CONSTEXPR auto arr1 = array<int, 10>{{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}};
			SPROUT_STATIC_CONSTEXPR auto arr2 = array<int, 10>{{}};
			SPROUT_STATIC_CONSTEXPR auto arr3 = array<int, 4>{{}};

			// rotate in range [2 .. 8)
			{
				SPROUT_STATIC_CONSTEXPR auto rotated = sprout::rotate_copy(
					sprout::begin(arr1) + 2,
					sprout::begin(arr1) + 4,
					sprout::begin(arr1) + 8,
					arr2
					);
				TESTSPR_BOTH_ASSERT(testspr::equal(
					rotated,
					array<int, 10>{{5, 6, 7, 8, 3, 4, 0, 0, 0, 0}}
					));
			}
			{
				SPROUT_STATIC_CONSTEXPR auto rotated = sprout::fit::rotate_copy(
					sprout::begin(arr1) + 2,
					sprout::begin(arr1) + 4,
					sprout::begin(arr1) + 8,
					arr2
					);
				TESTSPR_BOTH_ASSERT(testspr::equal(
					rotated,
					array<int, 6>{{5, 6, 7, 8, 3, 4}}
					));
			}
			// rotate in range [2 .. 8)
			// overrun from output range
			{
				SPROUT_STATIC_CONSTEXPR auto rotated = sprout::rotate_copy(
					sprout::begin(arr1) + 2,
					sprout::begin(arr1) + 4,
					sprout::begin(arr1) + 7,
					arr3
					);
				TESTSPR_BOTH_ASSERT(testspr::equal(
					rotated,
					array<int, 4>{{5, 6, 7, 3}}
					));
			}
			{
				SPROUT_STATIC_CONSTEXPR auto rotated = sprout::fit::rotate_copy(
					sprout::begin(arr1) + 2,
					sprout::begin(arr1) + 4,
					sprout::begin(arr1) + 7,
					arr3
					);
				TESTSPR_BOTH_ASSERT(testspr::equal(
					rotated,
					array<int, 4>{{5, 6, 7, 3}}
					));
			}
			// rotate in range [2 .. 8)
			// to sub range
			{
				SPROUT_STATIC_CONSTEXPR auto rotated = sprout::rotate_copy(
					sprout::begin(arr1) + 2,
					sprout::begin(arr1) + 4,
					sprout::begin(arr1) + 8,
					sprout::sub(arr2, 2, 8)
					);
				TESTSPR_BOTH_ASSERT(testspr::equal(
					rotated,
					array<int, 6>{{5, 6, 7, 8, 3, 4}}
					));
				TESTSPR_BOTH_ASSERT(testspr::equal(
					sprout::get_internal(rotated),
					array<int, 10>{{0, 0, 5, 6, 7, 8, 3, 4, 0, 0}}
					));
			}
			{
				SPROUT_STATIC_CONSTEXPR auto rotated = sprout::fit::rotate_copy(
					sprout::begin(arr1) + 2,
					sprout::begin(arr1) + 4,
					sprout::begin(arr1) + 8,
					sprout::sub(arr2, 2, 8)
					);
				TESTSPR_BOTH_ASSERT(testspr::equal(
					rotated,
					array<int, 6>{{5, 6, 7, 8, 3, 4}}
					));
				TESTSPR_BOTH_ASSERT(testspr::equal(
					sprout::get_internal(rotated),
					array<int, 10>{{0, 0, 5, 6, 7, 8, 3, 4, 0, 0}}
					));
			}

			// rotate in range [2 .. 8)
			{
				SPROUT_STATIC_CONSTEXPR auto rotated = sprout::rotate_copy(
					testspr::reduce_forward(sprout::begin(arr1) + 2),
					testspr::reduce_forward(sprout::begin(arr1) + 4),
					testspr::reduce_forward(sprout::begin(arr1) + 8),
					arr2
					);
				TESTSPR_BOTH_ASSERT(testspr::equal(
					rotated,
					array<int, 10>{{5, 6, 7, 8, 3, 4, 0, 0, 0, 0}}
					));
			}
			{
				SPROUT_STATIC_CONSTEXPR auto rotated = sprout::fit::rotate_copy(
					testspr::reduce_forward(sprout::begin(arr1) + 2),
					testspr::reduce_forward(sprout::begin(arr1) + 4),
					testspr::reduce_forward(sprout::begin(arr1) + 8),
					arr2
					);
				TESTSPR_BOTH_ASSERT(testspr::equal(
					rotated,
					array<int, 6>{{5, 6, 7, 8, 3, 4}}
					));
			}
			// rotate in range [2 .. 8)
			// overrun from output range
			{
				SPROUT_STATIC_CONSTEXPR auto rotated = sprout::rotate_copy(
					testspr::reduce_forward(sprout::begin(arr1) + 2),
					testspr::reduce_forward(sprout::begin(arr1) + 4),
					testspr::reduce_forward(sprout::begin(arr1) + 7),
					arr3
					);
				TESTSPR_BOTH_ASSERT(testspr::equal(
					rotated,
					array<int, 4>{{5, 6, 7, 3}}
					));
			}
			{
				SPROUT_STATIC_CONSTEXPR auto rotated = sprout::fit::rotate_copy(
					testspr::reduce_forward(sprout::begin(arr1) + 2),
					testspr::reduce_forward(sprout::begin(arr1) + 4),
					testspr::reduce_forward(sprout::begin(arr1) + 7),
					arr3
					);
				TESTSPR_BOTH_ASSERT(testspr::equal(
					rotated,
					array<int, 4>{{5, 6, 7, 3}}
					));
			}
			// rotate in range [2 .. 8)
			// to sub range
			{
				SPROUT_STATIC_CONSTEXPR auto rotated = sprout::rotate_copy(
					testspr::reduce_forward(sprout::begin(arr1) + 2),
					testspr::reduce_forward(sprout::begin(arr1) + 4),
					testspr::reduce_forward(sprout::begin(arr1) + 8),
					sprout::sub(arr2, 2, 8)
					);
				TESTSPR_BOTH_ASSERT(testspr::equal(
					rotated,
					array<int, 6>{{5, 6, 7, 8, 3, 4}}
					));
				TESTSPR_BOTH_ASSERT(testspr::equal(
					sprout::get_internal(rotated),
					array<int, 10>{{0, 0, 5, 6, 7, 8, 3, 4, 0, 0}}
					));
			}
			{
				SPROUT_STATIC_CONSTEXPR auto rotated = sprout::fit::rotate_copy(
					testspr::reduce_forward(sprout::begin(arr1) + 2),
					testspr::reduce_forward(sprout::begin(arr1) + 4),
					testspr::reduce_forward(sprout::begin(arr1) + 8),
					sprout::sub(arr2, 2, 8)
					);
				TESTSPR_BOTH_ASSERT(testspr::equal(
					rotated,
					array<int, 6>{{5, 6, 7, 8, 3, 4}}
					));
				TESTSPR_BOTH_ASSERT(testspr::equal(
					sprout::get_internal(rotated),
					array<int, 10>{{0, 0, 5, 6, 7, 8, 3, 4, 0, 0}}
					));
			}
		}
	}
}	// namespace testspr

#ifndef TESTSPR_CPP_INCLUDE
#	define TESTSPR_TEST_FUNCTION testspr::algorithm_rotate_copy_test
#	include <testspr/include_main.hpp>
#endif

#endif	// #ifndef SPROUT_LIBS_ALGORITHM_TEST_ROTATE_COPY_CPP