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/* vim:ts=8:sts=8:sw=4:noai:noexpandtab
*
* unit tests for rate regulation.
*
* Copyright (c) 2009 Miru Limited.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define __STDC_FORMAT_MACROS
#include <inttypes.h>
#include <signal.h>
#include <stdbool.h>
#include <stdlib.h>
#include <glib.h>
#include <check.h>
/* mock state */
#define pgm_time_now mock_pgm_time_now
#define pgm_time_update_now mock_pgm_time_update_now
#define RATE_CONTROL_DEBUG
#include "rate_control.c"
static pgm_time_t mock_pgm_time_now = 0x1;
static pgm_time_t _mock_pgm_time_update_now (void);
pgm_time_update_func mock_pgm_time_update_now = _mock_pgm_time_update_now;
/* mock functions for external references */
size_t
pgm_transport_pkt_offset2 (
const bool can_fragment,
const bool use_pgmcc
)
{
return 0;
}
static
pgm_time_t
_mock_pgm_time_update_now (void)
{
g_debug ("mock_pgm_time_now: %" PGM_TIME_FORMAT, mock_pgm_time_now);
return mock_pgm_time_now;
}
/* target:
* void
* pgm_rate_create (
* pgm_rate_t* bucket_,
* const ssize_t rate_per_sec,
* const size_t iphdr_len,
* const uint16_t max_tpdu
* )
*/
START_TEST (test_create_pass_001)
{
pgm_rate_t rate;
memset (&rate, 0, sizeof(rate));
pgm_rate_create (&rate, 100*1000, 10, 1500);
}
END_TEST
START_TEST (test_create_fail_001)
{
pgm_rate_create (NULL, 0, 0, 1500);
fail ("reached");
}
END_TEST
/* target:
* void
* pgm_rate_destroy (
* pgm_rate_t* bucket
* )
*/
START_TEST (test_destroy_pass_001)
{
pgm_rate_t rate;
memset (&rate, 0, sizeof(rate));
pgm_rate_create (&rate, 100*1000, 10, 1500);
pgm_rate_destroy (&rate);
}
END_TEST
START_TEST (test_destroy_fail_001)
{
pgm_rate_destroy (NULL);
fail ("reached");
}
END_TEST
/* target:
* bool
* pgm_rate_check (
* pgm_rate_t* bucket,
* const size_t data_size,
* const bool is_nonblocking
* )
*
* 001: should use seconds resolution to allow 2 packets through then fault.
*/
START_TEST (test_check_pass_001)
{
pgm_rate_t rate;
memset (&rate, 0, sizeof(rate));
pgm_rate_create (&rate, 2*1010, 10, 1500);
mock_pgm_time_now += pgm_secs(2);
fail_unless (TRUE == pgm_rate_check (&rate, 1000, TRUE), "rate_check failed");
fail_unless (TRUE == pgm_rate_check (&rate, 1000, TRUE), "rate_check failed");
fail_unless (FALSE == pgm_rate_check (&rate, 1000, TRUE), "rate_check failed");
pgm_rate_destroy (&rate);
}
END_TEST
START_TEST (test_check_fail_001)
{
pgm_rate_check (NULL, 1000, FALSE);
fail ("reached");
}
END_TEST
/* 002: assert that only one packet should pass through small bucket
*/
START_TEST (test_check_pass_002)
{
pgm_rate_t rate;
memset (&rate, 0, sizeof(rate));
pgm_rate_create (&rate, 2*900, 10, 1500);
mock_pgm_time_now += pgm_secs(2);
fail_unless (TRUE == pgm_rate_check (&rate, 1000, TRUE), "rate_check failed");
fail_unless (FALSE == pgm_rate_check (&rate, 1000, TRUE), "rate_check failed");
pgm_rate_destroy (&rate);
}
END_TEST
/* 003: millisecond resolution should initiate millisecond fills.
*/
START_TEST (test_check_pass_003)
{
pgm_rate_t rate;
memset (&rate, 0, sizeof(rate));
pgm_rate_create (&rate, 2*1010*1000, 10, 1500);
mock_pgm_time_now += pgm_secs(2);
fail_unless (TRUE == pgm_rate_check (&rate, 1000, TRUE), "rate_check failed");
fail_unless (TRUE == pgm_rate_check (&rate, 1000, TRUE), "rate_check failed");
fail_unless (FALSE == pgm_rate_check (&rate, 1000, TRUE), "rate_check failed");
/* duplicate check at same time point */
fail_unless (FALSE == pgm_rate_check (&rate, 1000, TRUE), "rate_check failed");
/* advance time causing a millisecond fill to occur */
mock_pgm_time_now += pgm_msecs(1);
fail_unless (TRUE == pgm_rate_check (&rate, 1000, TRUE), "rate_check failed");
fail_unless (TRUE == pgm_rate_check (&rate, 1000, TRUE), "rate_check failed");
fail_unless (FALSE == pgm_rate_check (&rate, 1000, TRUE), "rate_check failed");
/* advance time to fill bucket enough for only one packet */
mock_pgm_time_now += pgm_usecs(500);
fail_unless (TRUE == pgm_rate_check (&rate, 1000, TRUE), "rate_check failed");
fail_unless (FALSE == pgm_rate_check (&rate, 1000, TRUE), "rate_check failed");
/* advance time to fill the bucket a little but not enough for one packet */
mock_pgm_time_now += pgm_usecs(100);
fail_unless (FALSE == pgm_rate_check (&rate, 1000, TRUE), "rate_check failed");
/* advance time a lot, should be limited to millisecond fill rate */
mock_pgm_time_now += pgm_secs(10);
fail_unless (TRUE == pgm_rate_check (&rate, 1000, TRUE), "rate_check failed");
fail_unless (TRUE == pgm_rate_check (&rate, 1000, TRUE), "rate_check failed");
fail_unless (FALSE == pgm_rate_check (&rate, 1000, TRUE), "rate_check failed");
pgm_rate_destroy (&rate);
}
END_TEST
static
Suite*
make_test_suite (void)
{
Suite* s;
s = suite_create (__FILE__);
TCase* tc_create = tcase_create ("create");
suite_add_tcase (s, tc_create);
tcase_add_test (tc_create, test_create_pass_001);
tcase_add_test_raise_signal (tc_create, test_create_fail_001, SIGABRT);
TCase* tc_destroy = tcase_create ("destroy");
suite_add_tcase (s, tc_destroy);
tcase_add_test (tc_destroy, test_destroy_pass_001);
tcase_add_test_raise_signal (tc_destroy, test_destroy_fail_001, SIGABRT);
TCase* tc_check = tcase_create ("check");
suite_add_tcase (s, tc_check);
tcase_add_test (tc_check, test_check_pass_001);
tcase_add_test (tc_check, test_check_pass_002);
tcase_add_test (tc_check, test_check_pass_003);
tcase_add_test_raise_signal (tc_check, test_check_fail_001, SIGABRT);
return s;
}
static
Suite*
make_master_suite (void)
{
Suite* s = suite_create ("Master");
return s;
}
int
main (void)
{
SRunner* sr = srunner_create (make_master_suite ());
srunner_add_suite (sr, make_test_suite ());
srunner_run_all (sr, CK_ENV);
int number_failed = srunner_ntests_failed (sr);
srunner_free (sr);
return (number_failed == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
}
/* eof */
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