#include <ankerl/unordered_dense.h>

#include <doctest.h>

#include <cstddef> // for size_t

#include <string> // for allocator, string, operator==

#include <utility> // for pair, move

#include <vector> // for vector

namespace {

struct foo {

uint64_t m_i;

};

} // namespace

template <>

struct std::hash<foo> {

auto operator()(foo const& foo) const noexcept {

return static_cast<size_t>(foo.m_i + 1);

}

};

TEST_CASE("std_hash") {

auto f = foo{12345};

REQUIRE(std::hash<foo>{}(f) == 12346U);

// unordered_dense::hash blows that up to 64bit!

// Just wraps std::hash

REQUIRE(ankerl::unordered_dense::hash<foo>{}(f) == UINT64_C(12346));

REQUIRE(ankerl::unordered_dense::hash<uint64_t>{}(12346U) == UINT64_C(0x3F645BE4CE24110C));

}