mirror of
https://github.com/boostorg/hof.git
synced 2026-01-21 17:02:28 +00:00
88 lines
2.5 KiB
C++
88 lines
2.5 KiB
C++
#include <fit/reverse_compress.hpp>
|
|
#include "test.hpp"
|
|
|
|
struct max_f
|
|
{
|
|
template<class T, class U>
|
|
constexpr T operator()(T x, U y) const noexcept
|
|
{
|
|
return x > y ? x : y;
|
|
}
|
|
};
|
|
|
|
struct sum_f
|
|
{
|
|
template<class T, class U>
|
|
constexpr T operator()(T x, U y) const FIT_RETURNS_DEDUCE_NOEXCEPT(x+y)
|
|
{
|
|
return x + y;
|
|
}
|
|
};
|
|
|
|
#if FIT_HAS_NOEXCEPT_DEDUCTION
|
|
FIT_TEST_CASE()
|
|
{
|
|
static_assert(noexcept(fit::reverse_compress(max_f(), 0)(2, 3, 4, 5)), "noexcept reverse_compress");
|
|
static_assert(noexcept(fit::reverse_compress(sum_f(), 0)(2, 3, 4, 5)), "noexcept reverse_compress");
|
|
static_assert(!noexcept(fit::reverse_compress(sum_f(), std::string())("hello", "-", "world")), "noexcept reverse_compress");
|
|
}
|
|
#endif
|
|
|
|
FIT_TEST_CASE()
|
|
{
|
|
FIT_TEST_CHECK(fit::reverse_compress(max_f(), 0)(2, 3, 4, 5) == 5);
|
|
FIT_TEST_CHECK(fit::reverse_compress(max_f(), 0)(5, 4, 3, 2) == 5);
|
|
FIT_TEST_CHECK(fit::reverse_compress(max_f(), 0)(2, 3, 5, 4) == 5);
|
|
|
|
FIT_STATIC_TEST_CHECK(fit::reverse_compress(max_f(), 0)(2, 3, 4, 5) == 5);
|
|
FIT_STATIC_TEST_CHECK(fit::reverse_compress(max_f(), 0)(5, 4, 3, 2) == 5);
|
|
FIT_STATIC_TEST_CHECK(fit::reverse_compress(max_f(), 0)(2, 3, 5, 4) == 5);
|
|
}
|
|
|
|
FIT_TEST_CASE()
|
|
{
|
|
FIT_TEST_CHECK(fit::reverse_compress(max_f(), 0)() == 0);
|
|
FIT_TEST_CHECK(fit::reverse_compress(max_f(), 0)(5) == 5);
|
|
|
|
FIT_STATIC_TEST_CHECK(fit::reverse_compress(max_f(), 0)() == 0);
|
|
FIT_STATIC_TEST_CHECK(fit::reverse_compress(max_f(), 0)(5) == 5);
|
|
}
|
|
|
|
template<class... Ts>
|
|
constexpr auto find_positive_max(Ts... xs) FIT_RETURNS
|
|
(
|
|
fit::reverse_compress(max_f(), 0)(xs...)
|
|
);
|
|
|
|
FIT_TEST_CASE()
|
|
{
|
|
FIT_TEST_CHECK(find_positive_max() == 0);
|
|
FIT_TEST_CHECK(find_positive_max(5) == 5);
|
|
|
|
FIT_STATIC_TEST_CHECK(find_positive_max() == 0);
|
|
FIT_STATIC_TEST_CHECK(find_positive_max(5) == 5);
|
|
}
|
|
|
|
FIT_TEST_CASE()
|
|
{
|
|
FIT_TEST_CHECK(fit::reverse_compress(max_f())(5) == 5);
|
|
|
|
FIT_STATIC_TEST_CHECK(fit::reverse_compress(max_f())(5) == 5);
|
|
}
|
|
|
|
FIT_TEST_CASE()
|
|
{
|
|
FIT_TEST_CHECK(fit::reverse_compress(max_f())(2, 3, 4, 5) == 5);
|
|
FIT_TEST_CHECK(fit::reverse_compress(max_f())(5, 4, 3, 2) == 5);
|
|
FIT_TEST_CHECK(fit::reverse_compress(max_f())(2, 3, 5, 4) == 5);
|
|
|
|
FIT_STATIC_TEST_CHECK(fit::reverse_compress(max_f())(2, 3, 4, 5) == 5);
|
|
FIT_STATIC_TEST_CHECK(fit::reverse_compress(max_f())(5, 4, 3, 2) == 5);
|
|
FIT_STATIC_TEST_CHECK(fit::reverse_compress(max_f())(2, 3, 5, 4) == 5);
|
|
}
|
|
|
|
FIT_TEST_CASE()
|
|
{
|
|
FIT_TEST_CHECK(fit::reverse_compress(sum_f(), std::string())("hello", "-", "world") == "world-hello");
|
|
}
|