iobuffer-test.cpp

   1 #include "iobuffer.hpp"
   2
   3 #include <glog/logging.h>
   4
   5 const auto N = 100'000;
   6
   7 int main()
   8 {
   9   iobuffer<char> v;
  10
  11   // fill v with values [0..N-1]
  12   v.resize(N);
  13   for (size_t i = 0; i < N; ++i)
  14     *(v.data() + i) = i & 0x7F;
  15
  16   // chop off the end of v, which now should be [0..N/2], but
  17   // the other N/2 values should remain in memory
  18   v.resize(N / 2);
  19
  20   // grow back to N
  21   v.resize(N);
  22
  23   // verify the values are unchanged
  24   CHECK_EQ(v.size(), N);
  25   for (size_t i = 0; i < N; ++i) {
  26     CHECK_EQ(*(v.data() + i), i & 0x7F);
  27   }
  28
  29   iobuffer<char> q(std::move(v));
  30
  31   CHECK_EQ(q.size(), N);
  32   for (size_t i = 0; i < N; ++i) {
  33     CHECK_EQ(*(q.data() + i), i & 0x7F);
  34   }
  35
  36   iobuffer<char> qq(std::move(q));
  37
  38   CHECK_EQ(qq.size(), N);
  39   for (size_t i = 0; i < N; ++i) {
  40     CHECK_EQ(*(qq.data() + i), i & 0x7F);
  41   }
  42
  43   iobuffer<char> qqq(std::move(qq));
  44
  45   CHECK_EQ(qqq.size(), N);
  46   for (size_t i = 0; i < N; ++i) {
  47     CHECK_EQ(*(qqq.data() + i), i & 0x7F);
  48   }
  49 }