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[perl5.git] / t / op / time.t
1 #!./perl
2
3 $does_gmtime = gmtime(time);
4
5 BEGIN {
6     chdir 't' if -d 't';
7     @INC = '../lib';
8     require './test.pl';
9 }
10
11 plan tests => 8;
12
13 ($beguser,$begsys) = times;
14
15 $beg = time;
16
17 while (($now = time) == $beg) { sleep 1 }
18
19 ok($now > $beg && $now - $beg < 10,             'very basic time test');
20
21 for ($i = 0; $i < 1_000_000; $i++) {
22     ($nowuser, $nowsys) = times;
23     $i = 2_000_000 if $nowuser > $beguser && ( $nowsys >= $begsys ||
24                                             (!$nowsys && !$begsys));
25     last if time - $beg > 20;
26 }
27
28 ok($i >= 2_000_000, 'very basic times test');
29
30 ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime($beg);
31 ($xsec,$foo) = localtime($now);
32 $localyday = $yday;
33
34 ok($sec != $xsec && $mday && $year,             'localtime() list context');
35
36 ok(localtime() =~ /^(Sun|Mon|Tue|Wed|Thu|Fri|Sat)[ ]
37                     (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[ ]
38                     ([ \d]\d)\ (\d\d):(\d\d):(\d\d)\ (\d{4})$
39                   /x,
40    'localtime(), scalar context'
41   );
42
43 SKIP: {
44     # This conditional of "No tzset()" is stolen from ext/POSIX/t/time.t
45     skip "No tzset()", 1
46         if $^O eq "MacOS" || $^O eq "VMS" || $^O eq "cygwin" ||
47            $^O eq "djgpp" || $^O eq "MSWin32" || $^O eq "dos" ||
48            $^O eq "interix";
49
50 # check that localtime respects changes to $ENV{TZ}
51 $ENV{TZ} = "GMT-5";
52 ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime($beg);
53 $ENV{TZ} = "GMT+5";
54 ($sec,$min,$hour2,$mday,$mon,$year,$wday,$yday,$isdst) = localtime($beg);
55 ok($hour != $hour2,                             'changes to $ENV{TZ} respected');
56 }
57
58 SKIP: {
59     skip "No gmtime()", 3 unless $does_gmtime;
60
61 ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = gmtime($beg);
62 ($xsec,$foo) = localtime($now);
63
64 ok($sec != $xsec && $mday && $year,             'gmtime() list context');
65
66 my $day_diff = $localyday - $yday;
67 ok( grep({ $day_diff == $_ } (0, 1, -1, 364, 365, -364, -365)),
68                      'gmtime() and localtime() agree what day of year');
69
70
71 # This could be stricter.
72 ok(gmtime() =~ /^(Sun|Mon|Tue|Wed|Thu|Fri|Sat)[ ]
73                  (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[ ]
74                  ([ \d]\d)\ (\d\d):(\d\d):(\d\d)\ (\d{4})$
75                /x,
76    'gmtime(), scalar context'
77   );
78 }