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#include "catch.hpp"
#include <tl/expected.hpp>
#include <vector>
#include <type_traits>
#include <string>
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("Constructors", "[constructors]") {
{
tl::expected<int,int> e;
REQUIRE(e);
REQUIRE(e == 0);
}
{
tl::expected<int,int> e = tl::make_unexpected(0);
REQUIRE(!e);
REQUIRE(e.error() == 0);
}
{
tl::expected<int,int> e (tl::unexpect, 0);
REQUIRE(!e);
REQUIRE(e.error() == 0);
}
{
tl::expected<int,int> e (tl::in_place, 42);
REQUIRE(e);
REQUIRE(e == 42);
}
{
tl::expected<std::vector<int>,int> e (tl::in_place, {0,1});
REQUIRE(e);
REQUIRE((*e)[0] == 0);
REQUIRE((*e)[1] == 1);
}
{
tl::expected<std::tuple<int,int>,int> e (tl::in_place, 0, 1);
REQUIRE(e);
REQUIRE(std::get<0>(*e) == 0);
REQUIRE(std::get<1>(*e) == 1);
}
{
tl::expected<takes_init_and_variadic,int> e (tl::in_place, {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);
}
{
tl::expected<int, int> e;
REQUIRE(std::is_default_constructible<decltype(e)>::value);
REQUIRE(std::is_copy_constructible<decltype(e)>::value);
REQUIRE(std::is_move_constructible<decltype(e)>::value);
REQUIRE(std::is_copy_assignable<decltype(e)>::value);
REQUIRE(std::is_move_assignable<decltype(e)>::value);
REQUIRE(TL_EXPECTED_IS_TRIVIALLY_COPY_CONSTRUCTIBLE(decltype(e))::value);
REQUIRE(TL_EXPECTED_IS_TRIVIALLY_COPY_ASSIGNABLE(decltype(e))::value);
# if !defined(TL_EXPECTED_GCC49)
REQUIRE(std::is_trivially_move_constructible<decltype(e)>::value);
REQUIRE(std::is_trivially_move_assignable<decltype(e)>::value);
# endif
}
{
tl::expected<int, std::string> e;
REQUIRE(std::is_default_constructible<decltype(e)>::value);
REQUIRE(std::is_copy_constructible<decltype(e)>::value);
REQUIRE(std::is_move_constructible<decltype(e)>::value);
REQUIRE(std::is_copy_assignable<decltype(e)>::value);
REQUIRE(std::is_move_assignable<decltype(e)>::value);
REQUIRE(!TL_EXPECTED_IS_TRIVIALLY_COPY_CONSTRUCTIBLE(decltype(e))::value);
REQUIRE(!TL_EXPECTED_IS_TRIVIALLY_COPY_ASSIGNABLE(decltype(e))::value);
# if !defined(TL_EXPECTED_GCC49)
REQUIRE(!std::is_trivially_move_constructible<decltype(e)>::value);
REQUIRE(!std::is_trivially_move_assignable<decltype(e)>::value);
# endif
}
{
tl::expected<std::string, int> e;
REQUIRE(std::is_default_constructible<decltype(e)>::value);
REQUIRE(std::is_copy_constructible<decltype(e)>::value);
REQUIRE(std::is_move_constructible<decltype(e)>::value);
REQUIRE(std::is_copy_assignable<decltype(e)>::value);
REQUIRE(std::is_move_assignable<decltype(e)>::value);
REQUIRE(!TL_EXPECTED_IS_TRIVIALLY_COPY_CONSTRUCTIBLE(decltype(e))::value);
REQUIRE(!TL_EXPECTED_IS_TRIVIALLY_COPY_ASSIGNABLE(decltype(e))::value);
# if !defined(TL_EXPECTED_GCC49)
REQUIRE(!std::is_trivially_move_constructible<decltype(e)>::value);
REQUIRE(!std::is_trivially_move_assignable<decltype(e)>::value);
# endif
}
{
tl::expected<std::string, std::string> e;
REQUIRE(std::is_default_constructible<decltype(e)>::value);
REQUIRE(std::is_copy_constructible<decltype(e)>::value);
REQUIRE(std::is_move_constructible<decltype(e)>::value);
REQUIRE(std::is_copy_assignable<decltype(e)>::value);
REQUIRE(std::is_move_assignable<decltype(e)>::value);
REQUIRE(!TL_EXPECTED_IS_TRIVIALLY_COPY_CONSTRUCTIBLE(decltype(e))::value);
REQUIRE(!TL_EXPECTED_IS_TRIVIALLY_COPY_ASSIGNABLE(decltype(e))::value);
# if !defined(TL_EXPECTED_GCC49)
REQUIRE(!std::is_trivially_move_constructible<decltype(e)>::value);
REQUIRE(!std::is_trivially_move_assignable<decltype(e)>::value);
# endif
}
{
tl::expected<void,int> e;
REQUIRE(e);
}
{
tl::expected<void,int> e (tl::unexpect, 42);
REQUIRE(!e);
REQUIRE(e.error() == 42);
}
}
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