text: #include "../oof.h"
  #include "include_doctest.h"
  using namespace oof;
  
  
  TEST_CASE("cell_pos")
  {
     SUBCASE("is_end") {
        detail::cell_pos p0{ 10, 5 };
        CHECK_FALSE(p0.is_end());
        p0.m_index = 49;
        CHECK_FALSE(p0.is_end());
        ++p0;
        CHECK(p0.is_end());
     }
  }
  