49 lines
1.5 KiB
C++
49 lines
1.5 KiB
C++
#include <gtest/gtest.h>
|
|
#include <m5_utility/stl/optional.hpp>
|
|
#include <tuple>
|
|
#include <vector>
|
|
|
|
namespace make_opt {
|
|
struct takes_init_and_variadic {
|
|
std::vector<int> v;
|
|
std::tuple<int, int> t;
|
|
template <class... Args>
|
|
takes_init_and_variadic(std::initializer_list<int> l, Args &&...args) : v(l), t(std::forward<Args>(args)...)
|
|
{
|
|
}
|
|
};
|
|
} // namespace make_opt
|
|
|
|
TEST(Optional, MakeOptional)
|
|
{
|
|
auto o1 = m5::stl::make_optional(42);
|
|
auto o2 = m5::stl::optional<int>(42);
|
|
|
|
constexpr bool is_same = std::is_same<decltype(o1), m5::stl::optional<int>>::value;
|
|
EXPECT_TRUE(is_same);
|
|
EXPECT_TRUE(o1 == o2);
|
|
|
|
auto o3 = m5::stl::make_optional<std::tuple<int, int, int, int>>(0, 1, 2, 3);
|
|
EXPECT_TRUE(std::get<0>(*o3) == 0);
|
|
EXPECT_TRUE(std::get<1>(*o3) == 1);
|
|
EXPECT_TRUE(std::get<2>(*o3) == 2);
|
|
EXPECT_TRUE(std::get<3>(*o3) == 3);
|
|
|
|
auto o4 = m5::stl::make_optional<std::vector<int>>({0, 1, 2, 3});
|
|
EXPECT_TRUE(o4.value()[0] == 0);
|
|
EXPECT_TRUE(o4.value()[1] == 1);
|
|
EXPECT_TRUE(o4.value()[2] == 2);
|
|
EXPECT_TRUE(o4.value()[3] == 3);
|
|
|
|
auto o5 = m5::stl::make_optional<make_opt::takes_init_and_variadic>({0, 1}, 2, 3);
|
|
EXPECT_TRUE(o5->v[0] == 0);
|
|
EXPECT_TRUE(o5->v[1] == 1);
|
|
EXPECT_TRUE(std::get<0>(o5->t) == 2);
|
|
EXPECT_TRUE(std::get<1>(o5->t) == 3);
|
|
|
|
auto i = 42;
|
|
auto o6 = m5::stl::make_optional<int &>(i);
|
|
EXPECT_TRUE((std::is_same<decltype(o6), m5::stl::optional<int &>>::value));
|
|
EXPECT_TRUE(o6);
|
|
EXPECT_TRUE(*o6 == 42);
|
|
}
|