# 1) get current time

a = time();

if (!is_int(a) || a == 0) exit(1);


# 2) convert time to UTC time struct

a = gmtime(time());

if (!is_struct(a) || !is_field(a, "tm_sec")) exit(2);


# 3) convert time to local time struct

a = localtime(time());

if (!is_struct(a) || !is_field(a, "tm_sec")) exit(3);


# 4) get time back from time struct

a = time();
b = localtime(a);
c = mktime(b);

if (a != c) exit(4);


# 5) adjust time by one second

a = time();
b = localtime(a);
b.tm_sec += 1;
c = mktime(b);
d = c - a;

if (d != 1) exit(5);


# 6) adjust time by one minute

a = time();
b = localtime(a);
b.tm_min += 1;
c = mktime(b);
d = c - a;

if (d != 60) exit(6);


# 7) adjust time by one hour

a = time();
b = localtime(a);
b.tm_hour += 1;
c = mktime(b);
d = c - a;

if (d != 3600) exit(7);


# 8) adjust time by one day

a = time();
b = localtime(a);
b.tm_mday += 1;
c = mktime(b);
d = c - a;

if (d != 86400) exit(8);


# 9) format time

a = 0;
b = gmtime(a);
c = strftime("%Y-%m-%d %H:%M:%S", b);

if (c != "1970-01-01 00:00:00") exit(9);


print("9 subtests ");