xref: /openbsd-src/gnu/usr.bin/perl/t/op/time.t (revision 2b0358df1d88d06ef4139321dd05bd5e05d91eaf)
1#!./perl
2
3$does_gmtime = gmtime(time);
4
5BEGIN {
6    chdir 't' if -d 't';
7    @INC = '../lib';
8    require './test.pl';
9}
10
11plan tests => 8;
12
13($beguser,$begsys) = times;
14
15$beg = time;
16
17while (($now = time) == $beg) { sleep 1 }
18
19ok($now > $beg && $now - $beg < 10,             'very basic time test');
20
21for ($i = 0; $i < 1_000_000; $i++) {
22    for my $j (1..100) {}; # burn some user cycles
23    ($nowuser, $nowsys) = times;
24    $i = 2_000_000 if $nowuser > $beguser && ( $nowsys >= $begsys ||
25                                            (!$nowsys && !$begsys));
26    last if time - $beg > 20;
27}
28
29ok($i >= 2_000_000, 'very basic times test');
30
31($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime($beg);
32($xsec,$foo) = localtime($now);
33$localyday = $yday;
34
35ok($sec != $xsec && $mday && $year,             'localtime() list context');
36
37ok(localtime() =~ /^(Sun|Mon|Tue|Wed|Thu|Fri|Sat)[ ]
38                    (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[ ]
39                    ([ \d]\d)\ (\d\d):(\d\d):(\d\d)\ (\d{4})$
40                  /x,
41   'localtime(), scalar context'
42  );
43
44SKIP: {
45    # This conditional of "No tzset()" is stolen from ext/POSIX/t/time.t
46    skip "No tzset()", 1
47        if $^O eq "MacOS" || $^O eq "VMS" || $^O eq "cygwin" ||
48           $^O eq "djgpp" || $^O eq "MSWin32" || $^O eq "dos" ||
49           $^O eq "interix";
50
51# check that localtime respects changes to $ENV{TZ}
52$ENV{TZ} = "GMT-5";
53($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime($beg);
54$ENV{TZ} = "GMT+5";
55($sec,$min,$hour2,$mday,$mon,$year,$wday,$yday,$isdst) = localtime($beg);
56ok($hour != $hour2,                             'changes to $ENV{TZ} respected');
57}
58
59SKIP: {
60    skip "No gmtime()", 3 unless $does_gmtime;
61
62($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = gmtime($beg);
63($xsec,$foo) = localtime($now);
64
65ok($sec != $xsec && $mday && $year,             'gmtime() list context');
66
67my $day_diff = $localyday - $yday;
68ok( grep({ $day_diff == $_ } (0, 1, -1, 364, 365, -364, -365)),
69                     'gmtime() and localtime() agree what day of year');
70
71
72# This could be stricter.
73ok(gmtime() =~ /^(Sun|Mon|Tue|Wed|Thu|Fri|Sat)[ ]
74                 (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[ ]
75                 ([ \d]\d)\ (\d\d):(\d\d):(\d\d)\ (\d{4})$
76               /x,
77   'gmtime(), scalar context'
78  );
79}
80