kc3-lang/SDL/visualtest/include/SDL_visualtest_variator_common.h

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• Hash : f848adff
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  Date : 2013-11-29T10:06:08
  

  Improve Android pause/resume behavior.

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• visualtest/include/SDL_visualtest_variator_common.h

• /* See COPYING.txt for the full license governing this code. */
  /**
   * \file SDL_visualtest_variator_common.h
   *
   * Header for common functionality used by variators.
   */
  
  #include <SDL_types.h>
  #include "SDL_visualtest_sut_configparser.h"
  
  #ifndef _SDL_visualtest_variator_common_h
  #define _SDL_visualtest_variator_common_h
  
  /** The number of variations one integer option would generate */
  #define SDL_SUT_INTEGER_OPTION_TEST_STEPS 3
  
  /* Set up for C function definitions, even when using C++ */
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  /** enum for indicating the type of variator being used */
  typedef enum SDLVisualTest_VariatorType
  {
      SDL_VARIATOR_NONE = 0,
      SDL_VARIATOR_EXHAUSTIVE,
      SDL_VARIATOR_RANDOM
  } SDLVisualTest_VariatorType;
  
  /**
   * One possible value for a command line option to the SUT.
   */
  typedef union SDLVisualTest_SUTOptionValue
  {
      /*! Value if the option is of type boolean */
      SDL_bool bool_value;
      /*! Value if the option is of type integer. If on is true then the option
          will be passed to the SUT, otherwise it will be ignored. */
      struct {
          int value;
          SDL_bool on;
      } integer;
      /*! Index of the string in the enum_values field of the corresponding
          SDLVisualTest_SUTOption object. If on is true the option will passed
          to the SUT, otherwise it will be ignored. */
      struct {
          int index;
          SDL_bool on;
      } enumerated;
      /*! Value if the option is of type string. If on is true the option will 
          be passed to the SUT, otherwise it will be ignored. */
      struct {
          char* value;
          SDL_bool on;
      } string;
  } SDLVisualTest_SUTOptionValue;
  
  /**
   * Represents a valid combination of parameters that can be passed to the SUT.
   * The ordering of the values here is the same as the ordering of the options in
   * the SDLVisualTest_SUTConfig object for this variation.
   */
  typedef struct SDLVisualTest_Variation
  {
      /*! Pointer to array of option values */
      SDLVisualTest_SUTOptionValue* vars;
      /*! Number of option values in \c vars */
      int num_vars;
  } SDLVisualTest_Variation;
  
  /**
   * "Increments" the value of the option by one and returns the carry. We wrap
   * around to the initial value on overflow which makes the carry one.
   * For example: "incrementing" an SDL_FALSE option makes it SDL_TRUE with no
   * carry, and "incrementing" an SDL_TRUE option makes it SDL_FALSE with carry
   * one. For integers, a random value in the valid range for the option is used.
   *
   * \param var Value of the option
   * \param opt Object with metadata about the option
   *
   * \return 1 if there is a carry for enum and bool type options, 0 otherwise.
   *         1 is always returned for integer and string type options. -1 is
   *         returned on error.
   */
  int SDLVisualTest_NextValue(SDLVisualTest_SUTOptionValue* var,
                              SDLVisualTest_SUTOption* opt);
  
  /**
   * Converts a variation object into a string of command line arguments.
   *
   * \param variation Variation object to be converted.
   * \param config Config object for the SUT.
   * \param buffer Pointer to the buffer the arguments string will be copied into.
   * \param size Size of the buffer.
   *
   * \return 1 on success, 0 on failure
   */
  int SDLVisualTest_MakeStrFromVariation(SDLVisualTest_Variation* variation,
                                         SDLVisualTest_SUTConfig* config,
                                         char* buffer, int size);
  
  /**
   * Initializes the variation using the following rules:
   * - Boolean options are initialized to SDL_FALSE.
   * - Integer options are initialized to the minimum valid value they can hold.
   * - Enum options are initialized to the first element in the list of values they
   *   can take.
   * - String options are initialized to the name of the option.
   *
   * \return 1 on success, 0 on failure.
   */
  int SDLVisualTest_InitVariation(SDLVisualTest_Variation* variation,
                                  SDLVisualTest_SUTConfig* config);
  
  /* Ends C function definitions when using C++ */
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* _SDL_visualtest_variator_common_h */

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