ACE/tests/Compiler_Features_05_Test.cpp

   1 /**
   2  * @file
   3  *
   4  * This program checks if the compiler / platform supports the
   5  * std::queue container.  The motivation for this test was a discussion
   6  * on the development mailing queue, and the documentation was captured
   7  * in:
   8  *
   9  *   http://bugzilla.dre.vanderbilt.edu/show_bug.cgi?id=3715
  10  */
  11
  12 #include "test_config.h"
  13
  14 // The first part of the test is to compile this line.  If the program
  15 // does not compile the platform is just too broken.
  16 #include <queue>
  17
  18 int
  19 run_main (int, ACE_TCHAR *[])
  20 {
  21   ACE_START_TEST (ACE_TEXT("Compiler_Features_05_Test"));
  22
  23   // As usual, the exit status from the test is 0 on success, 1 on
  24   // failure
  25   int status = 0;
  26
  27   // Create a simple queue ...
  28   using collection = std::queue<int>;
  29   // ... if the previous line compiles, the default template
  30   // parameters work.  The declaration of queue<> is something like:
  31   //   template<typename T, typename Sequence = deque<T> >
  32   // notice that this is not a template template parameter...
  33   collection c;
  34
  35   // ... insert some elements ...
  36   c.push(5);
  37   c.push(4);
  38   c.push(3);
  39   c.push(2);
  40   c.push(1);
  41
  42   // ... add all the numbers to validate that they are there ...
  43   int sum = 0;
  44   while (! c.empty())
  45     {
  46       sum += c.front();
  47       c.pop();
  48     }
  49
  50   // ... remember Euler ...
  51   int const expected = 5*(5+1)/2;
  52   if (sum != expected)
  53     {
  54       status = 1;
  55       ACE_ERROR ((LM_ERROR, ACE_TEXT("Expected %d got %d\n"),
  56                   expected, sum));
  57     }
  58
  59   ACE_END_TEST;
  60   return status;
  61 }
  62
  63