kc3-lang/SDL/visualtest/src/variator_random.c

Branch : - branch - v2.28 - tag -

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  Commit

• Author : Ryan C. Gordon
  Date : 2015-04-20 12:22:44
  Hash : b72938c8
  Message : Windows: Always set the system timer resolution to 1ms by default. An existing hint lets apps that don't need the timer resolution changed avoid this, to save battery, etc, but this fixes several problems in timing, audio callbacks not firing fast enough, etc. Fixes Bugzilla #2944.

• visualtest/src/variator_random.c

• /* See COPYING.txt for the full license governing this code. */
  /**
   * \file variator_random.c
   *
   * Source file for the variator that tests the SUT with random variations to the
   * input parameters.
   */
  
  #include <time.h>
  #include <SDL_test.h>
  #include "SDL_visualtest_random_variator.h"
  
  int
  SDLVisualTest_InitRandomVariator(SDLVisualTest_RandomVariator* variator,
                                   SDLVisualTest_SUTConfig* config, Uint64 seed)
  {
      if(!variator)
      {
          SDLTest_LogError("variator argument cannot be NULL");
          return 0;
      }
      if(!config)
      {
          SDLTest_LogError("config argument cannot be NULL");
          return 0;
      }
  
      if(seed)
          SDLTest_FuzzerInit(seed);
      else
          SDLTest_FuzzerInit(time(NULL));
  
      variator->config = *config;
  
      if(!SDLVisualTest_InitVariation(&variator->variation, &variator->config))
      {
          SDLTest_LogError("SDLVisualTest_InitVariation() failed");
          return 0;
      }
  
      return 1;
  }
  
  char*
  SDLVisualTest_GetNextRandomVariation(SDLVisualTest_RandomVariator* variator)
  {
      SDLVisualTest_SUTOptionValue* vars;
      SDLVisualTest_SUTOption* options;
      int i;
      if(!variator)
      {
          SDLTest_LogError("variator argument cannot be NULL");
          return NULL;
      }
   
      /* to save typing */
      vars = variator->variation.vars;
      options = variator->config.options;
  
      /* generate a random variation */
      for(i = 0; i < variator->variation.num_vars; i++)
      {
          switch(options[i].type)
          {
              case SDL_SUT_OPTIONTYPE_BOOL:
                  vars[i].bool_value = SDLTest_RandomIntegerInRange(0, 1) ? SDL_FALSE :
                                                                            SDL_TRUE;
              break;
  
              case SDL_SUT_OPTIONTYPE_ENUM:
              {
                  int emx = 0;
                  while(options[i].data.enum_values[emx])
                      emx++;
                  vars[i].enumerated.index = SDLTest_RandomIntegerInRange(0, emx - 1);
              }
              break;
              
              case SDL_SUT_OPTIONTYPE_INT:
                  vars[i].integer.value = SDLTest_RandomIntegerInRange(
                                          options[i].data.range.min,
                                          options[i].data.range.max);
              break;
  
              case SDL_SUT_OPTIONTYPE_STRING:
                  // String values are left unchanged
              break;
          }
      }
  
      /* convert variation to an arguments string */
      if(!SDLVisualTest_MakeStrFromVariation(&variator->variation, &variator->config,
                                             variator->buffer, MAX_SUT_ARGS_LEN))
      {
          SDLTest_LogError("SDLVisualTest_MakeStrFromVariation() failed");
          return NULL;
      }
  
      return variator->buffer;
  }
  
  void SDLVisualTest_FreeRandomVariator(SDLVisualTest_RandomVariator* variator)
  {
      if(!variator)
      {
          SDLTest_LogError("variator argument cannot be NULL");
          return;
      }
      SDL_free(variator->variation.vars);
      variator->variation.vars = NULL;
  }