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Additional tests for B and POSIX. The POSIX ones concern me a bit,
[perl5.git] / ext / POSIX / t / time.t
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1#!perl -w
2
3use strict;
4
5use Config;
6use POSIX;
7use Test::More qw(no_plan);
8
9# go to UTC to avoid DST issues around the world when testing
10{
11 no warnings 'uninitialized';
12 $ENV{TZ} = undef;
13}
14
15SKIP: {
16 # It looks like POSIX.xs claims that only VMS and Mac OS traditional
17 # don't have tzset(). A config setting might be helpful. Win32 actually
18 # seems ambiguous
19 skip "No tzset()", 2
20 if $^O eq "MacOS" || $^O eq "VMS" || $^O eq "cygwin" ||
21 $^O eq "MSWin32" || $^O eq "dos" || $^O eq "interix";
22 tzset();
23 my @tzname = tzname();
24 like($tzname[0], qr/[GMT|UTC]/i, "tzset() to GMT/UTC");
25 like($tzname[1], qr/[GMT|UTC]/i, "The whole year?");
26}
27
28# asctime and ctime...Let's stay below INT_MAX for 32-bits and
29# positive for some picky systems.
30
31is(asctime(localtime(0)), ctime(0), "asctime() and ctime() at zero");
32is(asctime(localtime(12345678)), ctime(12345678), "asctime() and ctime() at 12345678");
33
34# Careful! strftime() is locale sensative. Let's take care of that
35SKIP: {
36 skip "Win32's is missing a %e" if $^O eq "MSWin32";
37 my $orig_loc = setlocale(LC_TIME, "C") || die "Cannot setlocale() to C: $!";
38 is(ctime(86400), strftime("%a %b %e %H:%M:%S %Y\n", localtime(86400)),
39 "get ctime() equal to strftime()");
40 setlocale(LC_TIME, $orig_loc) || die "Cannot setlocale() back to orig: $!";
41}
42
43# Hard to test other than to make sure it returns something numeric and < 0
44like(clock(), qr/\d*/, "clock() returns a numeric value");
45ok(clock() > 0, "...and its greater than zero");
46
47SKIP: {
48 skip "No difftime()", 1 if $Config{d_difftime} ne 'define';
49 is(difftime(2, 1), 1, "difftime()");
50}
51
52SKIP: {
53 skip "No mktime()", 1 if $Config{d_mktime} ne 'define';
54 my $time = time();
55 is(mktime(localtime($time)), $time, "mktime()");
56}