/** Initialize an #sbp_state_t struct before use.
* This resets the entire state, including all callbacks.
* Remember to use this function to initialize the state before calling
* sbp_process() for the first time.
*
* \param s State structure
*/
void sbp_state_init(sbp_state_t *s)
{
s->state = WAITING;
/* Set the IO context pointer, passed to read and write functions, to NULL. */
s->io_context = 0;
/* Clear the callbacks, if any, currently in s */
sbp_clear_callbacks(s);
}
END_TEST
START_TEST(test_callbacks)
{
sbp_state_t s;
sbp_state_init(&s);
/* Start with no callbacks registered. */
sbp_clear_callbacks(&s);
fail_unless(sbp_find_callback(&s, 0x1234) == 0,
"sbp_find_callback should return NULL if no callbacks registered");
fail_unless(sbp_register_callback(&s, 0x2233, &test_callback, 0, 0) == SBP_NULL_ERROR,
"sbp_register_callback should return an error if node is NULL");
/* Add a first callback. */
static sbp_msg_callbacks_node_t n;
int NUMBER = 42;
fail_unless(sbp_register_callback(&s, 0x2233, 0, 0, &n) == SBP_NULL_ERROR,
"sbp_register_callback should return an error if cb is NULL");
fail_unless(sbp_register_callback(&s, 0x2233, &test_callback, &NUMBER, &n) == SBP_OK,
"sbp_register_callback should return success if everything is groovy");
fail_unless(sbp_register_callback(&s, 0x2233, &test_callback, 0, &n)
== SBP_CALLBACK_ERROR,
"sbp_register_callback should return SBP_CALLBACK_ERROR if a callback "
"of the same type is already registered");
fail_unless(sbp_find_callback(&s, 0x1234) == 0,
"sbp_find_callback should return NULL if callback not registered");
fail_unless(sbp_find_callback(&s, 0x2233) == &n,
"sbp_find_callback didn't return the correct callback node pointer");
fail_unless(sbp_find_callback(&s, 0x2233)->context == &NUMBER,
"sbp_find_callback didn't return the correct context pointer");
/* Add a second callback. */
static sbp_msg_callbacks_node_t m;
int NUMBER2 = 84;
fail_unless(sbp_register_callback(&s, 0x1234, &test_callback2, &NUMBER2, &m) == SBP_OK,
"sbp_register_callback should return success if everything is groovy (2)");
fail_unless(sbp_find_callback(&s, 0x2233) == &n,
"sbp_find_callback didn't return the correct callback function pointer (2)");
fail_unless(sbp_find_callback(&s, 0x2233)->context == &NUMBER,
"sbp_find_callback didn't return the correct context pointer");
fail_unless(sbp_find_callback(&s, 0x1234) == &m,
"sbp_find_callback didn't return the correct callback function pointer (3)");
fail_unless(sbp_find_callback(&s, 0x1234)->context == &NUMBER2,
"sbp_find_callback didn't return the correct context pointer");
fail_unless(sbp_register_callback(&s, 0x1234, &test_callback, 0, &n)
== SBP_CALLBACK_ERROR,
"sbp_register_callback should return SBP_CALLBACK_ERROR if a callback "
"of the same type is already registered (2)");
fail_unless(sbp_find_callback(&s, 0x7788) == 0,
"sbp_find_callback should return NULL if callback not registered (2)");
/* Clear all the registered callbacks and check they can no longer be found. */
sbp_clear_callbacks(&s);
fail_unless(sbp_find_callback(&s, 0x1234) == 0,
"sbp_find_callback should return NULL if no callbacks registered (2)");
fail_unless(sbp_find_callback(&s, 0x2233) == 0,
"sbp_find_callback should return NULL if no callbacks registered (3)");
}
