Function test_make_from_tuple

dlib/test/invoke.cpp:313–343

    // ----------------------------------------------------------------------------------------

    void test_make_from_tuple()
    {
        struct multi_args_object
        {
            multi_args_object(int i_, int j_) : i(i_), j(j_) {}
            int i = 0;
            int j = 0;
        };

        {
            auto obj = dlib::make_from_tuple<multi_args_object>(std::make_tuple(1, 2));
            static_assert(std::is_same<decltype(obj), multi_args_object>::value, "bad type");
            DLIB_TEST(obj.i == 1);
            DLIB_TEST(obj.j == 2);
        }

        {
            std::array<int,2> a = {3, 4};
            auto obj = dlib::make_from_tuple<multi_args_object>(a);
            static_assert(std::is_same<decltype(obj), multi_args_object>::value, "bad type");
            DLIB_TEST(obj.i == 3);
            DLIB_TEST(obj.j == 4);
        }

        {
            auto obj = dlib::make_from_tuple<multi_args_object>(std::make_pair(5, 6));
            static_assert(std::is_same<decltype(obj), multi_args_object>::value, "bad type");
            DLIB_TEST(obj.i == 5);
            DLIB_TEST(obj.j == 6);
        }
    }

    // ----------------------------------------------------------------------------------------