cpp-useful-iterators/test/unkeyed_iterator_test.cxx

#include "iterator/unkeyed_iterator.hpp"

#include <map>
#include <vector>

#include <gmock/gmock.h>

TEST(UnkeyedIteratorTest, IteratorOnlyReturnsValues) {
  std::map<int, int> map{{1, 2}, {2, 3}};
  std::vector<int> const expected{2, 3};
  iterator::unkeyed_iterator<std::map<int, int>::iterator>{map.begin()};
  std::vector<int> const result{
      iterator::unkeyed_iterator<std::map<int, int>::iterator>{map.begin()},
      iterator::unkeyed_iterator<std::map<int, int>::iterator>{map.end()}};
  EXPECT_THAT(result, expected);
}

TEST(UnkeyedIteratorTest, CanModifyIteratedCollectionValues) {
  std::map<int, int> map{{1, 2}, {2, 3}};
  iterator::unkeyed_iterator<std::map<int, int>::iterator> uit{map.begin()};
  *uit = 4;
  EXPECT_THAT(map[1], 4);
}