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#include <catch2/catch_test_macros.hpp>
#include <tl/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)...) {}
};
}
TEST_CASE("Emplace", "[emplace]") {
{
tl::expected<std::unique_ptr<int>,int> e;
e.emplace(new int{42});
REQUIRE(e);
REQUIRE(**e == 42);
}
{
tl::expected<std::vector<int>,int> e;
e.emplace({0,1});
REQUIRE(e);
REQUIRE((*e)[0] == 0);
REQUIRE((*e)[1] == 1);
}
{
tl::expected<std::tuple<int,int>,int> e;
e.emplace(2,3);
REQUIRE(e);
REQUIRE(std::get<0>(*e) == 2);
REQUIRE(std::get<1>(*e) == 3);
}
{
tl::expected<takes_init_and_variadic,int> e = tl::make_unexpected(0);
e.emplace({0,1}, 2, 3);
REQUIRE(e);
REQUIRE(e->v[0] == 0);
REQUIRE(e->v[1] == 1);
REQUIRE(std::get<0>(e->t) == 2);
REQUIRE(std::get<1>(e->t) == 3);
}
}
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