#include "util/printing.hpp"

#include <catch2/catch_test_macros.hpp>

#include <iterator>

#include <memory>

#include <string>

#include <string_view>

#include <tuplet/tuple.hpp>

TEST_CASE("Test that for_each works", "[for_each]") {

using tuplet::tuple;

std::string str;

auto ins = std::back_inserter(str);

tuple tup {

"Hello world!",

std::string("This is a test..."),

10,

'x',

20,

3.141592};

tup.for_each([&](auto& value) { fmt::format_to(ins, "{}\n", value); });

REQUIRE(

str

== "Hello world!\n" //

"This is a test...\n" //

"10\n" //

"x\n" //

"20\n" //

"3.141592\n");

}

TEST_CASE(

"Test that for_each moves values when given moved-from tuple",

"[for_each]") {

using tuplet::tuple;

auto tup = tuple {

std::make_unique<int>(10),

std::make_unique<int>(20),

std::make_unique<int>(30)};

SECTION("Check that the tuple is valid") {

REQUIRE(tup.all([](auto& val) { return bool(val); }));

}

int sum = 0;

std::move(tup).for_each([&](auto value) { sum += *value; });

SECTION("check that the tuple was moved from and the sum is 60") {

REQUIRE(tup.all([](auto& val) { return bool(val) == false; }));

REQUIRE(sum == 60);

}

}