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stuce-bot 2025-06-30 20:47:33 +02:00
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libraries/M5Utility/test/optional/in_place.cpp Normal file
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#include <gtest/gtest.h>
#include <m5_utility/stl/optional.hpp>
#include <tuple>
#include <vector>
namespace in_place {
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 in_place
TEST(Optional, Inplace)
{
m5::stl::optional<int> o1{m5::stl::in_place};
m5::stl::optional<int> o2(m5::stl::in_place);
EXPECT_TRUE(o1);
EXPECT_TRUE(o1 == 0);
EXPECT_TRUE(o2);
EXPECT_TRUE(o2 == 0);
m5::stl::optional<int> o3(m5::stl::in_place, 42);
EXPECT_TRUE(o3 == 42);
m5::stl::optional<std::tuple<int, int>> o4(m5::stl::in_place, 0, 1);
EXPECT_TRUE(o4);
EXPECT_TRUE(std::get<0>(*o4) == 0);
EXPECT_TRUE(std::get<1>(*o4) == 1);
m5::stl::optional<std::vector<int>> o5(m5::stl::in_place, {0, 1});
EXPECT_TRUE(o5);
EXPECT_TRUE((*o5)[0] == 0);
EXPECT_TRUE((*o5)[1] == 1);
m5::stl::optional<in_place::takes_init_and_variadic> o6(m5::stl::in_place, {0, 1}, 2, 3);
EXPECT_TRUE(o6->v[0] == 0);
EXPECT_TRUE(o6->v[1] == 1);
EXPECT_TRUE(std::get<0>(o6->t) == 2);
EXPECT_TRUE(std::get<1>(o6->t) == 3);
}