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Add pair & tuple stream output operators for tests

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This commit is contained in:
Nikita Lisitsa 2022-06-11 13:59:16 +03:00
parent 9edf94be0c
commit f93383f06d
1 changed files with 20 additions and 0 deletions
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20
tools/test/include/psemek/test/test.hpp
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@ -5,6 +5,8 @@
#include <vector>
#include <optional>
#include <iostream>
#include <utility>
#include <tuple>
// Have to put it before including to_string.hpp due to how unqualified lookup works,
// see e.g. https://alexanderlobov.net/posts/2019-07-08-function-lookup-in-templates
@ -18,6 +20,24 @@ std::ostream & operator << (std::ostream & s, std::optional<T> const & o)
return s;
}
template <typename T1, typename T2>
std::ostream & operator << (std::ostream & s, std::pair<T1, T2> const & p)
{
s << '(' << p.first << ", " << p.second << ')';
return s;
}
template <typename ... Ts>
std::ostream & operator << (std::ostream & s, std::tuple<Ts...> const & t)
{
s << '(';
[&]<std::size_t ... Is>(std::index_sequence<Is...>){
((s << (Is == 0 ? "" : ", ") << std::get<Is>(t)), ...);
}(std::make_index_sequence<sizeof...(Ts)>{});
s << ')';
return s;
}
#include <psemek/util/to_string.hpp>
namespace psemek::test