default_init_allocator-test.cpp

   1 #include "default_init_allocator.hpp"
   2
   3 #include <iostream>
   4 #include <vector>
   5
   6 #include <glog/logging.h>
   7
   8 int main()
   9 {
  10   std::vector<int, default_init_allocator<int>> v;
  11
  12   // fill v with values [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
  13   v.resize(10);
  14   for (size_t i = 0; i < 10; ++i)
  15     v[i] = i;
  16
  17   // chop off the end of v, which now should be [1, 2, 3, 4, 5], but
  18   // the other 5 values should remain in memory
  19   v.resize(5);
  20
  21   // grow back to 10
  22   v.resize(10);
  23
  24   for (size_t i = 0; i < v.size(); ++i) {
  25     CHECK_EQ(v[i], i);
  26   }
  27 }