variator_random.c
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/* 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;
}