hof/test/match.cpp

#include <fit/match.h>
#include <fit/static.h>
#include "test.h"

#include <memory>

FIT_STATIC_TEST_CASE()
{
    struct int_class
    {
        int operator()(int) const
        {
            return 1;
        }
    };

    struct foo
    {};

    struct foo_class
    {
        foo operator()(foo) const
        {
            return foo();
        }
    };

    fit::static_<fit::match_adaptor<int_class, foo_class> > fun = {};

    static_assert(std::is_same<int, decltype(fun(1))>::value, "Failed match");
    static_assert(std::is_same<foo, decltype(fun(foo()))>::value, "Failed match");
};

struct int_class
{
    constexpr int operator()(int) const
    {
        return 1;
    }
};

struct foo
{};

struct foo_class
{
    constexpr int operator()(foo) const
    {
        return 2;
    }
};

constexpr const fit::match_adaptor<int_class, foo_class> fun = {};

FIT_TEST_CASE()
{
    
    FIT_TEST_CHECK(fun(1) == 1);
    FIT_TEST_CHECK(fun(foo()) == 2);

    static_assert(fun(1) == 1, "Failed match");
    static_assert(fun(foo()) == 2, "Failed match");
};


struct int_move_class
{
    std::unique_ptr<int> i;
    int_move_class() : i(new int(1))
    {}
    int operator()(int) const
    {
        return *i;
    }
};

struct foo_move_class
{
    std::unique_ptr<int> i;
    foo_move_class() : i(new int(2))
    {}
    int operator()(foo) const
    {
        return *i;
    }
};

FIT_TEST_CASE()
{
    auto fun_move = fit::match(int_move_class(), foo_move_class());
    FIT_TEST_CHECK(fun_move(1) == 1);
    FIT_TEST_CHECK(fun_move(foo()) == 2);

};