test_timing.c

   1 #include "config.h"
   2 #include "libserialport.h"
   3 #include "libserialport_internal.h"
   4 #include <assert.h>
   5 #include <unistd.h>
   6
   7 int main(int argc, char *argv[])
   8 {
   9         (void) argc;
  10         (void) argv;
  11         struct time a, b, c;
  12         struct timeval tv;
  13         struct timeout to;
  14
  15         printf("Testing arithmetic\n");
  16         time_set_ms(&a, 10050);
  17         time_set_ms(&b, 100);
  18         assert(time_greater(&a, &b));
  19         assert(!time_greater(&b, &a));
  20         time_add(&a, &b, &c);
  21         assert(time_as_ms(&c) == 10150);
  22         time_sub(&a, &b, &c);
  23         assert(time_as_ms(&c) == 9950);
  24         time_as_timeval(&a, &tv);
  25         assert(tv.tv_sec == 10);
  26         assert(tv.tv_usec == 50000);
  27         time_get(&a);
  28         printf("Sleeping for 1s\n");
  29         sleep(1);
  30         time_get(&b);
  31         time_sub(&b, &a, &c);
  32         printf("Measured: %ums\n", time_as_ms(&c));
  33         assert(time_as_ms(&c) >= 950);
  34         assert(time_as_ms(&c) <= 1050);
  35         printf("Starting 3s timeout\n");
  36         timeout_start(&to, 3000);
  37         printf("Time to wait: %dms\n", timeout_remaining_ms(&to));
  38         printf("Sleeping for 1s\n");
  39         sleep(1);
  40         timeout_update(&to);
  41         assert(!timeout_check(&to));
  42         printf("Sleeping for 1s\n");
  43         sleep(1);
  44         timeout_update(&to);
  45         assert(!timeout_check(&to));
  46         printf("Remaining: %ums\n", timeout_remaining_ms(&to));
  47         printf("Sleeping for 1s\n");
  48         sleep(1);
  49         timeout_update(&to);
  50         assert(timeout_check(&to));
  51         printf("Timeout expired\n");
  52         printf("Starting 2s timeout\n");
  53         timeout_start(&to, 2000);
  54         printf("Limiting steps to 1s\n");
  55         timeout_limit(&to, 1000);
  56         printf("Time to wait: %ums\n", timeout_remaining_ms(&to));
  57         printf("Sleeping for 1s\n");
  58         sleep(1);
  59         timeout_update(&to);
  60         assert(!timeout_check(&to));
  61         printf("Remaining: %ums\n", timeout_remaining_ms(&to));
  62         printf("Sleeping for 1s\n");
  63         sleep(1);
  64         timeout_update(&to);
  65         assert(timeout_check(&to));
  66         printf("Timeout expired\n");
  67
  68         return 0;
  69 }