libcruft-util/test/tuple.cpp

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#include "tuple/type.hpp"
#include "tuple/value.hpp"
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#include "tap.hpp"
#include <typeindex>
#include <vector>
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template <typename T>
struct int_mapper
{
typedef int type;
};
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int
main ()
{
util::TAP::logger tap;
static_assert (
util::tuple::type::index<
std::tuple<float,int,void>,
int
>::value == 1
);
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{
auto tuple = std::make_tuple (1,2,3,4);
std::vector<int> expected {{ 1, 2, 3, 4 }};
std::vector<int> actual;
util::tuple::value::each ([&actual] (auto i) { actual.push_back (i); }, tuple);
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tap.expect_eq (actual, expected, "value iteration");
}
{
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#if !defined(NO_RTTI)
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auto tuple = std::make_tuple (1u, 1, 1.f, 1.);
std::vector<std::type_index> expected {
std::type_index (typeid (1u)),
std::type_index (typeid (1)),
std::type_index (typeid (1.f)),
std::type_index (typeid (1.))
};
std::vector<std::type_index> actual;
util::tuple::type::each<decltype(tuple)> ([&actual] (auto i) {
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actual.push_back (typeid (typename decltype(i)::type));
});
tap.expect_eq (actual, expected, "type iteration");
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#else
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tap.skip ("type iteration because no-rtti");
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#endif
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}
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{
using src_t = std::tuple<std::string>;
using dst_t = typename util::tuple::type::map<src_t, int_mapper>::type;
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tap.expect (std::is_same<dst_t, std::tuple<int>>::value, "tuple type mapping");
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}
return tap.status ();
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}