text: #include "0206_reverse_linked_list.cpp"
  #include <doctest/doctest.h>
  
  TEST_CASE("reverseList")
  {
      // l = 1->2->3->4->5->null
      auto l = list::make_list({1, 2, 3, 4, 5});
  
      Solution s;
      auto* r = s.reverseList(l[0].get());
      REQUIRE(list::same_values(r, {5, 4, 3, 2, 1}));
  }
  