TAO/tests/Bug_3574_Regression/test.cpp

   1 #include "tao/StringSeqC.h"
   2
   3 int
   4 ACE_TMAIN (int, ACE_TCHAR *[])
   5 {
   6   char const *str = "Some string";
   7
   8   CORBA::StringSeq seq;
   9   seq.length (100);
  10   for (CORBA::ULong i = 0; i < seq.length (); ++i)
  11     {
  12       seq[i] = str;
  13     }
  14
  15   // Save a pointer to the whole buffer.
  16   char const * const *wholebuf = seq.get_buffer ();
  17
  18   // This call should reinitialize the the 100th element
  19   // (the fact that the shrunk elements are reinitialized is TAO
  20   // specific but we test for it).
  21   seq.length (99);
  22   // No reallocation should happen for the buffer.
  23   ACE_TEST_ASSERT (seq.get_buffer () == wholebuf);
  24   // And set the length to the same value
  25   seq.length (99);
  26   ACE_TEST_ASSERT (seq.get_buffer () == wholebuf);
  27   // We cannot be sure that the pointer to the reinitialized 100th
  28   // element is different from the old one since memory manager can
  29   // return the same pointer that we've just released but it must
  30   // not be 0 and it must be an empty string.
  31   ACE_TEST_ASSERT (wholebuf[99] != 0);
  32   ACE_TEST_ASSERT (ACE_OS::strcmp (wholebuf[99], "") == 0);
  33
  34   // Extend the sequence to the original size.
  35   seq.length (100);
  36   // No reallocation should happen for the buffer.
  37   ACE_TEST_ASSERT (seq.get_buffer () == wholebuf);
  38   // And now we can test absolutely legally that the 100th
  39   // element was reinitialized as CORBA spec requires.
  40   ACE_TEST_ASSERT (seq[99].in () != 0);
  41   ACE_TEST_ASSERT (ACE_OS::strcmp (seq[99].in (), "") == 0);
  42   seq.length (101);
  43   // Reallocation should happen for the buffer.
  44   ACE_TEST_ASSERT (seq.get_buffer () != wholebuf);
  45   ACE_TEST_ASSERT (seq[100].in () != 0);
  46   ACE_TEST_ASSERT (ACE_OS::strcmp (seq[100].in (), "") == 0);
  47
  48   return 0;
  49 }