libstdc++-v3/testsuite/23_containers/deque/modifiers/emplace/1.cc

   1 // { dg-do run { target c++11 } }
   2
   3 #include <deque>
   4 #include <testsuite_hooks.h>
   5
   6 void
   7 test01()
   8 {
   9   std::deque<int> c;
  10   std::deque<int>::iterator pos;
  11
  12   // libstdc++/52799
  13   pos = c.emplace(c.begin());
  14   VERIFY( c.size() == 1 );
  15   VERIFY( c[0] == 0 );
  16   VERIFY( pos == c.begin() );
  17   pos = c.emplace(c.begin(), 2);
  18   VERIFY( c.size() == 2 );
  19   VERIFY( c[0] == 2 );
  20   VERIFY( c[1] == 0 );
  21   VERIFY( pos == c.begin() );
  22   pos = c.emplace(c.end(), 3);
  23   VERIFY( c.size() == 3 );
  24   VERIFY( c[0] == 2 );
  25   VERIFY( c[1] == 0 );
  26   VERIFY( c[2] == 3 );
  27   VERIFY( pos == --c.end() );
  28
  29   // const_iterator
  30   pos = c.emplace(c.cbegin());
  31   VERIFY( c.size() == 4 );
  32   VERIFY( c[0] == 0 );
  33   VERIFY( c[1] == 2 );
  34   VERIFY( pos == c.cbegin() );
  35   pos = c.emplace(c.cbegin() + 2, 22);
  36   VERIFY( c.size() == 5 );
  37   VERIFY( c[0] == 0 );
  38   VERIFY( c[1] == 2 );
  39   VERIFY( c[2] == 22 );
  40   VERIFY( pos == c.cbegin() + 2 );
  41 }
  42
  43 struct V
  44 {
  45   explicit V(int a, int b = 0) : val(a+b) { }
  46   int val;
  47 };
  48
  49 void
  50 test02()
  51 {
  52   std::deque<V> c;
  53   std::deque<V>::iterator pos;
  54
  55   pos = c.emplace(c.end(), 1);
  56   VERIFY( c.size() == 1 );
  57   VERIFY( c[0].val == 1 );
  58   VERIFY( pos == --c.end() );
  59   pos = c.emplace(c.cend(), 2, 3);
  60   VERIFY( c.size() == 2 );
  61   VERIFY( c[0].val == 1 );
  62   VERIFY( c[1].val == 5 );
  63   VERIFY( pos == --c.cend() );
  64 }
  65
  66 int main()
  67 {
  68   test01();
  69   test02();
  70 }