test-function-prototype.c

#include <stdio.h>
#include <string.h>
#include "test-common.h"
#include "jerryscript.h"

static jerry_value_t
native_function (const jerry_value_t function_obj,
                 const jerry_value_t this_val,
                 const jerry_value_t args_p[],
                 const jerry_value_t args_count)
{
  (void) function_obj;
  (void) this_val;
  (void) args_p;
  (void) args_count;
  return jerry_create_undefined();
} /* native_function */

static void
eval_js(char *js_code, char *result)
{
  jerry_value_t parse_result = jerry_parse ((jerry_char_t *) js_code,
                                            strlen (js_code),
                                            true);
  TEST_ASSERT (!jerry_value_has_error_flag (parse_result));
  jerry_value_t eval_result = jerry_run (parse_result);
  TEST_ASSERT (!jerry_value_has_error_flag (eval_result));
  TEST_ASSERT (jerry_value_is_string (eval_result));

  jerry_size_t result_size = jerry_get_string_size (eval_result);
  jerry_char_t result_string[result_size + 1];
  jerry_string_to_char_buffer (eval_result, result_string, result_size);
  result_string[result_size] = 0;

  printf("%s -> %s\n", js_code, result_string);

  if (result != NULL)
  {
    TEST_ASSERT (!strcmp ((char *) result_string, result));
  }

  jerry_release_value (parse_result);
  jerry_release_value (eval_result);
} /* eval_js */

int
main (int argc, char **argv)
{
  (void) argc;
  (void) argv;

  jerry_init (JERRY_INIT_EMPTY);

  jerry_value_t js_native_function = jerry_create_external_function (native_function);
  jerry_value_t global = jerry_get_global_object ();
  jerry_value_t name = jerry_create_string ((jerry_char_t *) "native_function");
  jerry_value_t set_result = jerry_set_property (global, name, js_native_function);
  TEST_ASSERT (!jerry_value_has_error_flag (set_result));

  jerry_value_t prototype = jerry_create_object ();
  jerry_release_value (set_result);
  set_result = jerry_set_prototype (js_native_function, prototype);
  TEST_ASSERT(!jerry_value_has_error_flag (set_result));

  jerry_value_t proto_prop = jerry_create_string ((jerry_char_t *) "some_property");
  jerry_value_t proto_prop_value = jerry_create_string ((jerry_char_t *) "some_value");
  jerry_release_value (set_result);
  set_result = jerry_set_property (prototype, proto_prop, proto_prop_value);
  TEST_ASSERT (!jerry_value_has_error_flag (set_result));

  eval_js ("typeof native_function.prototype", NULL);
  eval_js ("typeof native_function.__proto__", NULL);
  eval_js ("typeof (new native_function()).some_property", NULL);

  jerry_release_value (proto_prop_value);
  jerry_release_value (proto_prop);
  jerry_release_value (prototype);
  jerry_release_value (set_result);
  jerry_release_value (name);
  jerry_release_value (global);
  jerry_release_value (js_native_function);
  jerry_cleanup();
}