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

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• Hash : abe2c0f1
  Author :
  Date : 2021-02-18T11:06:44
  

  license: Fixed references to COPYING.txt that are now LICENSE.txt. Fixes #4108

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• visualtest/src/variator_random.c

• /* See LICENSE.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;
  }

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