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stuce-bot 2025-06-30 20:47:33 +02:00
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51
libraries/M5Utility/test/expected/emplace.cpp Normal file
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#include <gtest/gtest.h>
#include <m5_utility/stl/expected.hpp>
#include <memory>
#include <vector>
#include <tuple>
namespace {
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
TEST(Expected, Emplace)
{
{
m5::stl::expected<std::unique_ptr<int>, int> e;
e.emplace(new int{42});
EXPECT_TRUE(e);
EXPECT_TRUE(**e == 42);
}
{
m5::stl::expected<std::vector<int>, int> e;
e.emplace({0, 1});
EXPECT_TRUE(e);
EXPECT_TRUE((*e)[0] == 0);
EXPECT_TRUE((*e)[1] == 1);
}
{
m5::stl::expected<std::tuple<int, int>, int> e;
e.emplace(2, 3);
EXPECT_TRUE(e);
EXPECT_TRUE(std::get<0>(*e) == 2);
EXPECT_TRUE(std::get<1>(*e) == 3);
}
{
m5::stl::expected<::takes_init_and_variadic, int> e = m5::stl::make_unexpected(0);
e.emplace({0, 1}, 2, 3);
EXPECT_TRUE(e);
EXPECT_TRUE(e->v[0] == 0);
EXPECT_TRUE(e->v[1] == 1);
EXPECT_TRUE(std::get<0>(e->t) == 2);
EXPECT_TRUE(std::get<1>(e->t) == 3);
}
}