#include <iteratoriterator.hpp>

#include <vector>
#include <string>

#include "catch.hpp"

using iter::IterIterWrapper;

TEST_CASE("Iterator over a vector of vector iterators", "[iteratoriterator]") {
    using std::vector;
    vector<int> v = {2, 4, 6, 8};

    IterIterWrapper<vector<vector<int>::iterator>> itr;
    itr.get().push_back(std::begin(v) + 1);
    itr.get().push_back(std::end(v) - 1);
    itr.get().push_back(std::begin(v));

    auto it = std::begin(itr);
    REQUIRE( *it == 4 );
    REQUIRE( it != std::end(itr) );
    ++it;
    REQUIRE( *it == 8 );
    it++;
    REQUIRE( *it == 2 );
    ++it;
    REQUIRE( it == std::end(itr) );

    REQUIRE( itr[0] == 4 );
    REQUIRE( itr[1] == 8 );
    REQUIRE( itr[2] == 2 );

    auto rit = itr.rbegin();

    REQUIRE( *rit == 2 );
    REQUIRE( rit != itr.rend() );
    ++rit;
    REQUIRE( *rit == 8 );
    ++rit;
    REQUIRE( *rit == 4 );
    ++rit;
    REQUIRE( rit == itr.rend() );
}

TEST_CASE("IteratorIterator operator->", "[iteratoriterator]") {
    using std::vector;
    using std::string;
    vector<string> v = {"hello", "everyone"};
    IterIterWrapper<vector<vector<string>::iterator>> itritr;
    itritr.get().push_back(std::end(v) - 1);
    itritr.get().push_back(std::begin(v));
    auto it = std::begin(itritr);
    REQUIRE( it->size() == 8 );
}