git.ozlabs.org Git - ccan/blob - ccan/time/test/run.c

   1 #include <ccan/time/time.h>
   2 #include <ccan/time/time.c>
   3 #include <ccan/tap/tap.h>
   4
   5 int main(void)
   6 {
   7         struct timeabs t1, t2;
   8         struct timerel t3, t4, zero = { { 0, 0 } };
   9
  10         plan_tests(66);
  11
  12         /* Test time_now */
  13         t1 = time_now();
  14         t2 = time_now();
  15
  16         /* Test time_between. */
  17         t3 = time_between(t2, t1);
  18         ok1(t3.ts.tv_sec > 0 || t3.ts.tv_nsec >= 0);
  19         t3 = time_between(t2, t2);
  20         ok1(t3.ts.tv_sec == 0 && t3.ts.tv_nsec == 0);
  21         t3 = time_between(t1, t1);
  22         ok1(t3.ts.tv_sec == 0 && t3.ts.tv_nsec == 0);
  23
  24         /* Test timeabs_eq / timerel_eq */
  25         ok1(timeabs_eq(t1, t1));
  26         ok1(timeabs_eq(t2, t2));
  27         t3.ts.tv_sec = 0;
  28         t3.ts.tv_nsec = 1;
  29         ok1(!timerel_eq(t3, zero));
  30         ok1(!timerel_eq(t3, zero));
  31
  32         /* Make sure t2 > t1. */
  33         t2 = timeabs_add(t2, t3);
  34
  35         /* Test time_after and time_before. */
  36         ok1(!timeabs_eq(t1, t2));
  37         ok1(!time_after(t1, t2));
  38         ok1(time_before(t1, t2));
  39         ok1(time_after(t2, t1));
  40         ok1(!time_before(t2, t1));
  41         t3.ts.tv_sec = 0;
  42         t3.ts.tv_nsec = 999999999;
  43         t2 = timeabs_add(t2, t3);
  44         ok1(!timeabs_eq(t1, t2));
  45         ok1(!time_after(t1, t2));
  46         ok1(time_before(t1, t2));
  47         ok1(time_after(t2, t1));
  48         ok1(!time_before(t2, t1));
  49
  50         /* Test time_less and time_greater. */
  51         ok1(time_less(zero, t3));
  52         ok1(!time_greater(zero, t3));
  53         ok1(!time_less(t3, zero));
  54         ok1(time_greater(t3, zero));
  55
  56         /* Test time_sub */
  57         t3 = time_sub(t3, t3);
  58         ok1(timerel_eq(t3, zero));
  59
  60         /* Test time_between */
  61         t3 = time_between(t2, t2);
  62         ok1(timerel_eq(t3, zero));
  63         t3.ts.tv_sec = 0;
  64         t3.ts.tv_nsec = 999999999;
  65         t1 = timeabs_add(t2, t3);
  66         t3 = time_between(t1, t2);
  67         ok1(t3.ts.tv_sec == 0 && t3.ts.tv_nsec == 999999999);
  68
  69         /* time_from_sec / time_to_sec */
  70         t3 = time_from_sec(500);
  71         ok1(t3.ts.tv_sec == 500);
  72         ok1(t3.ts.tv_nsec == 0);
  73         ok1(time_to_sec(t3) == 500);
  74
  75         /* time_from_msec / time_to_msec */
  76         t3 = time_from_msec(500);
  77         ok1(t3.ts.tv_sec == 0);
  78         ok1(t3.ts.tv_nsec == 500000000);
  79         ok1(time_to_msec(t3) == 500);
  80
  81         t3 = time_from_msec(1000);
  82         ok1(t3.ts.tv_sec == 1);
  83         ok1(t3.ts.tv_nsec == 0);
  84         ok1(time_to_msec(t3) == 1000);
  85
  86         t3 = time_from_msec(1500);
  87         ok1(t3.ts.tv_sec == 1);
  88         ok1(t3.ts.tv_nsec == 500000000);
  89         ok1(time_to_msec(t3) == 1500);
  90
  91         /* time_from_usec */
  92         t3 = time_from_usec(500000);
  93         ok1(t3.ts.tv_sec == 0);
  94         ok1(t3.ts.tv_nsec == 500000000);
  95         ok1(time_to_usec(t3) == 500000);
  96
  97         t3 = time_from_usec(1000000);
  98         ok1(t3.ts.tv_sec == 1);
  99         ok1(t3.ts.tv_nsec == 0);
 100         ok1(time_to_usec(t3) == 1000000);
 101
 102         t3 = time_from_usec(1500000);
 103         ok1(t3.ts.tv_sec == 1);
 104         ok1(t3.ts.tv_nsec == 500000000);
 105         ok1(time_to_usec(t3) == 1500000);
 106
 107         /* time_from_nsec */
 108         t3 = time_from_nsec(500000000);
 109         ok1(t3.ts.tv_sec == 0);
 110         ok1(t3.ts.tv_nsec == 500000000);
 111         ok1(time_to_nsec(t3) == 500000000);
 112
 113         t3 = time_from_nsec(1000000000);
 114         ok1(t3.ts.tv_sec == 1);
 115         ok1(t3.ts.tv_nsec == 0);
 116         ok1(time_to_nsec(t3) == 1000000000);
 117
 118         t3 = time_from_nsec(1500000000);
 119         ok1(t3.ts.tv_sec == 1);
 120         ok1(t3.ts.tv_nsec == 500000000);
 121         ok1(time_to_nsec(t3) == 1500000000);
 122
 123         /* Test wrapunder */
 124         t1 = timeabs_sub(timeabs_sub(t2, time_from_msec(500)), time_from_msec(500));
 125         ok1(t1.ts.tv_sec == t2.ts.tv_sec - 1);
 126         ok1(t1.ts.tv_nsec == t2.ts.tv_nsec);
 127
 128         /* time_divide and time_multiply */
 129         t4.ts.tv_nsec = 100;
 130         t4.ts.tv_sec = 100;
 131
 132         t3 = time_divide(t4, 2);
 133         ok1(t3.ts.tv_sec == 50);
 134         ok1(t3.ts.tv_nsec == 50);
 135
 136         t3 = time_divide(t4, 100);
 137         ok1(t3.ts.tv_sec == 1);
 138         ok1(t3.ts.tv_nsec == 1);
 139
 140         t3 = time_multiply(t3, 100);
 141         ok1(timerel_eq(t3, t4));
 142
 143         t3 = time_divide(t4, 200);
 144         ok1(t3.ts.tv_sec == 0);
 145         ok1(t3.ts.tv_nsec == 500000000);
 146
 147         /* Divide by huge number. */
 148         t4.ts.tv_sec = (1U << 31) - 1;
 149         t4.ts.tv_nsec = 999999999;
 150         t3 = time_divide(t4, 1 << 30);
 151         /* Allow us to round either way. */
 152         ok1((t3.ts.tv_sec == 2 && t3.ts.tv_nsec == 0)
 153             || (t3.ts.tv_sec == 1 && t3.ts.tv_nsec == 999999999));
 154
 155         /* Multiply by huge number. */
 156         t4.ts.tv_sec = 0;
 157         t4.ts.tv_nsec = 1;
 158         t3 = time_multiply(t4, 1UL << 31);
 159         ok1(t3.ts.tv_sec == 2);
 160         ok1(t3.ts.tv_nsec == 147483648);
 161
 162         return exit_status();
 163 }