src/lib/test-log-throttle.c

/* Copyright (c) 2016-2018 Dovecot authors, see the included COPYING file */

#include "test-lib.h"
#include "ioloop.h"
#include "log-throttle.h"

static unsigned int test_log_throttle_new_events_count;

static void test_log_throttle_callback(unsigned int new_events_count,
                       struct ioloop *ioloop)
{
    test_log_throttle_new_events_count = new_events_count;
    io_loop_stop(ioloop);
}

void test_log_throttle(void)
{
    const struct log_throttle_settings set = {
        .throttle_at_max_per_interval = 10,
        .unthrottle_at_max_per_interval = 5,
        .interval_msecs = 10,
    };
    struct log_throttle *throttle;
    struct ioloop *ioloop;
    unsigned int i;

    test_begin("log throttle");

    ioloop = io_loop_create();
    throttle = log_throttle_init(&set, test_log_throttle_callback, ioloop);

    /* throttle once and drop out just below */
    for (i = 0; i < 10; i++)
        test_assert_idx(log_throttle_accept(throttle), i);
    for (i = 0; i < 4; i++)
        test_assert_idx(!log_throttle_accept(throttle), i);

    io_loop_run(ioloop);
    test_assert(test_log_throttle_new_events_count == 4);

    /* throttle and continue just above */
    for (i = 0; i < 10; i++)
        test_assert_idx(log_throttle_accept(throttle), i);
    for (i = 0; i < 5; i++)
        test_assert_idx(!log_throttle_accept(throttle), i);

    io_loop_run(ioloop);
    test_assert(test_log_throttle_new_events_count == 5);

    /* we should be still throttled */
    test_assert(!log_throttle_accept(throttle));

    log_throttle_deinit(&throttle);
    io_loop_destroy(&ioloop);

    test_end();
}