ACE/tests/Bug_2434_Regression_Test.cpp

   1
   2 //=============================================================================
   3 /**
   4  *  @file    Bug_2434_Regression_Test.cpp
   5  *
   6  *    This is a simple test of ACE_Time_Value.  No command line arguments
   7  *    are needed to run the test.
   8  *
   9  *  @author Prashant Jain <pjain@cs.wustl.edu> and David Levine <levine@cs.wustl.edu>
  10  */
  11 //=============================================================================
  12
  13 // Note, for this test the config.h file *must* come first!
  14 #include "ace/config-all.h"
  15
  16 #include "test_config.h"
  17 #include "ace/ACE.h"
  18 #include "ace/Time_Value.h"
  19 #include "ace/Numeric_Limits.h"
  20
  21 int
  22 run_main (int, ACE_TCHAR *[])
  23 {
  24   int ret = 0;
  25
  26   ACE_START_TEST (ACE_TEXT ("Bug_2434_Regression_Test"));
  27
  28   ACE_Time_Value tv1;
  29   ACE_Time_Value tv2;
  30
  31   const time_t max_time_t = ACE_Numeric_Limits<time_t>::max ();
  32   const time_t min_time_t = ACE_Numeric_Limits<time_t>::min ();
  33
  34   // test protection against overflows
  35   // ACE_TEST_ASSERT( ACE_Time_Value(max_time_t,ACE_ONE_SECOND_IN_USECS) != ACE_Time_Value(ACE_Numeric_Limits<time_t>::min()) );
  36
  37   // test saturated result
  38   tv1.set (max_time_t - 1, 499999);
  39   tv2.set (max_time_t, 999999);  // ACE_Time_Value::max_time
  40   tv1 *= 10.0;
  41   ACE_TEST_ASSERT (tv1 == tv2);
  42   tv1.set (max_time_t - 1, 499999);
  43   tv2.set (min_time_t, -999999);
  44   tv1 *= -10.0;
  45   ACE_TEST_ASSERT (tv1 == tv2);
  46
  47   // test results near limits
  48   tv1.set ((max_time_t >> 1), 499999);
  49   tv2.set ((-(max_time_t >> 1) << 1), -999998);
  50   tv1 *= -2.0;
  51   ACE_TEST_ASSERT (tv1 == tv2);
  52   tv1.set (max_time_t >> 1, 499999);
  53   tv2.set (((max_time_t >> 1) << 1), 999998);
  54   tv1 *= 2.0;
  55   ACE_TEST_ASSERT (tv1 == tv2);
  56
  57   ACE_END_TEST;
  58
  59   return ret;
  60 }