1#!perl -w 2 3use strict; 4 5use Config; 6use POSIX; 7use Test::More tests => 9; 8 9# go to UTC to avoid DST issues around the world when testing. SUS3 says that 10# null should get you UTC, but some environments want the explicit names. 11# Those with a working tzset() should be able to use the TZ below. 12$ENV{TZ} = "UTC0UTC"; 13 14SKIP: { 15 # It looks like POSIX.xs claims that only VMS and Mac OS traditional 16 # don't have tzset(). Win32 works to call the function, but it doesn't 17 # actually do anything. Cygwin works in some places, but not others. The 18 # other Win32's below are guesses. 19 skip "No tzset()", 2 20 if $^O eq "MacOS" || $^O eq "VMS" || $^O eq "cygwin" || $^O eq "djgpp" || 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 SKIP: { 26 skip "Mac OS X/Darwin doesn't handle this", 1 if $^O =~ /darwin/i; 27 like($tzname[1], qr/(GMT|UTC)/i, "The whole year?"); 28 } 29} 30 31# asctime and ctime...Let's stay below INT_MAX for 32-bits and 32# positive for some picky systems. 33 34is(asctime(localtime(0)), ctime(0), "asctime() and ctime() at zero"); 35is(asctime(localtime(12345678)), ctime(12345678), "asctime() and ctime() at 12345678"); 36 37# Careful! strftime() is locale sensative. Let's take care of that 38my $orig_loc = setlocale(LC_TIME, "C") || die "Cannot setlocale() to C: $!"; 39my $jan_16 = 15 * 86400; 40is(ctime($jan_16), strftime("%a %b %d %H:%M:%S %Y\n", localtime($jan_16)), 41 "get ctime() equal to strftime()"); 42setlocale(LC_TIME, $orig_loc) || die "Cannot setlocale() back to orig: $!"; 43 44# clock() seems to have different definitions of what it does between POSIX 45# and BSD. Cygwin, Win32, and Linux lean the BSD way. So, the tests just 46# check the basics. 47like(clock(), qr/\d*/, "clock() returns a numeric value"); 48ok(clock() >= 0, "...and it returns something >= 0"); 49 50SKIP: { 51 skip "No difftime()", 1 if $Config{d_difftime} ne 'define'; 52 is(difftime(2, 1), 1, "difftime()"); 53} 54 55SKIP: { 56 skip "No mktime()", 1 if $Config{d_mktime} ne 'define'; 57 my $time = time(); 58 is(mktime(localtime($time)), $time, "mktime()"); 59} 60