-#!./perl
+#!./perl -w
-# $RCSfile: time.t,v $$Revision: 4.1 $$Date: 92/08/07 18:28:32 $
+BEGIN {
+ chdir 't' if -d 't';
+ @INC = '../lib';
+ require './test.pl';
+}
+
+plan tests => 66;
-if ($does_gmtime = gmtime(time)) { print "1..6\n" }
-else { print "1..3\n" }
+# These tests make sure, among other things, that we don't end up
+# burning tons of CPU for dates far in the future.
+# watchdog() makes sure that the test script eventually exits if
+# the tests are triggering the failing behavior
+watchdog(15);
($beguser,$begsys) = times;
while (($now = time) == $beg) { sleep 1 }
-if ($now > $beg && $now - $beg < 10){print "ok 1\n";} else {print "not ok 1\n";}
+ok($now > $beg && $now - $beg < 10, 'very basic time test');
-for ($i = 0; $i < 100000; $i++) {
+for ($i = 0; $i < 1_000_000; $i++) {
+ for my $j (1..100) {}; # burn some user cycles
($nowuser, $nowsys) = times;
- $i = 200000 if $nowuser > $beguser && ( $nowsys > $begsys ||
+ $i = 2_000_000 if $nowuser > $beguser && ( $nowsys >= $begsys ||
(!$nowsys && !$begsys));
last if time - $beg > 20;
}
-if ($i >= 200000) {print "ok 2\n";} else {print "not ok 2\n";}
+ok($i >= 2_000_000, 'very basic times test');
($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime($beg);
($xsec,$foo) = localtime($now);
$localyday = $yday;
-if ($sec != $xsec && $mday && $year)
- {print "ok 3\n";}
-else
- {print "not ok 3\n";}
+isnt($sec, $xsec, 'localtime() list context');
+ok $mday, ' month day';
+ok $year, ' year';
+
+ok(localtime() =~ /^(Sun|Mon|Tue|Wed|Thu|Fri|Sat)[ ]
+ (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[ ]
+ ([ \d]\d)\ (\d\d):(\d\d):(\d\d)\ (\d{4})$
+ /x,
+ 'localtime(), scalar context'
+ );
+
+SKIP: {
+ # This conditional of "No tzset()" is stolen from ext/POSIX/t/time.t
+ skip "No tzset()", 1
+ if $^O eq "VMS" || $^O eq "cygwin" ||
+ $^O eq "djgpp" || $^O eq "MSWin32" || $^O eq "dos" ||
+ $^O eq "interix";
+
+# check that localtime respects changes to $ENV{TZ}
+$ENV{TZ} = "GMT-5";
+($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime($beg);
+$ENV{TZ} = "GMT+5";
+($sec,$min,$hour2,$mday,$mon,$year,$wday,$yday,$isdst) = localtime($beg);
+ok($hour != $hour2, 'changes to $ENV{TZ} respected');
+}
-exit 0 unless $does_gmtime;
($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = gmtime($beg);
($xsec,$foo) = localtime($now);
-if ($sec != $xsec && $mday && $year)
- {print "ok 4\n";}
-else
- {print "not ok 4\n";}
+isnt($sec, $xsec, 'gmtime() list conext');
+ok $mday, ' month day';
+ok $year, ' year';
+
+my $day_diff = $localyday - $yday;
+ok( grep({ $day_diff == $_ } (0, 1, -1, 364, 365, -364, -365)),
+ 'gmtime() and localtime() agree what day of year');
-if (index(" :0:1:-1:364:365:-364:-365:",':' . ($localyday - $yday) . ':') > 0)
- {print "ok 5\n";}
-else
- {print "not ok 5\n";}
# This could be stricter.
-if (gmtime() =~ /^(Sun|Mon|Tue|Wed|Thu|Fri|Sat) (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec) ([ \d]\d) (\d\d):(\d\d):(\d\d) (\d\d\d\d)$/)
- {print "ok 6\n";}
-else
- {print "not ok 6\n";}
+ok(gmtime() =~ /^(Sun|Mon|Tue|Wed|Thu|Fri|Sat)[ ]
+ (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)[ ]
+ ([ \d]\d)\ (\d\d):(\d\d):(\d\d)\ (\d{4})$
+ /x,
+ 'gmtime(), scalar context'
+ );
+
+
+
+# Test gmtime over a range of times.
+{
+ # The range should be limited only by the 53-bit mantissa of an IEEE double (or
+ # whatever kind of double you've got). Here we just prove that we're comfortably
+ # beyond the range possible with 32-bit time_t.
+ my %tests = (
+ # time_t gmtime list scalar
+ -2**35 => [52, 13, 20, 7, 2, -1019, 5, 65, 0, "Fri Mar 7 20:13:52 881"],
+ -2**32 => [44, 31, 17, 24, 10, -67, 0, 327, 0, "Sun Nov 24 17:31:44 1833"],
+ -2**31 => [52, 45, 20, 13, 11, 1, 5, 346, 0, "Fri Dec 13 20:45:52 1901"],
+ -1 => [59, 59, 23, 31, 11, 69, 3, 364, 0, "Wed Dec 31 23:59:59 1969"],
+ 0 => [0, 0, 0, 1, 0, 70, 4, 0, 0, "Thu Jan 1 00:00:00 1970"],
+ 1 => [1, 0, 0, 1, 0, 70, 4, 0, 0, "Thu Jan 1 00:00:01 1970"],
+ 2**30 => [4, 37, 13, 10, 0, 104, 6, 9, 0, "Sat Jan 10 13:37:04 2004"],
+ 2**31 => [8, 14, 3, 19, 0, 138, 2, 18, 0, "Tue Jan 19 03:14:08 2038"],
+ 2**32 => [16, 28, 6, 7, 1, 206, 0, 37, 0, "Sun Feb 7 06:28:16 2106"],
+ 2**39 => [8, 18, 12, 25, 0, 17491, 2, 24, 0, "Tue Jan 25 12:18:08 19391"],
+ );
+
+ for my $time (keys %tests) {
+ my @expected = @{$tests{$time}};
+ my $scalar = pop @expected;
+
+ ok eq_array([gmtime($time)], \@expected), "gmtime($time) list context";
+ is scalar gmtime($time), $scalar, " scalar";
+ }
+}
+
+
+# Test localtime
+{
+ # We pick times which fall in the middle of a month, so the month and year should be
+ # the same regardless of the time zone.
+ my %tests = (
+ # time_t month, year, scalar
+ -8589934592 => [9, -203, qr/Oct \d+ .* 1697$/],
+ -1296000 => [11, 69, qr/Dec \d+ .* 1969$/],
+ 1296000 => [0, 70, qr/Jan \d+ .* 1970$/],
+ 5000000000 => [5, 228, qr/Jun \d+ .* 2128$/],
+ 1163500000 => [10, 106, qr/Nov \d+ .* 2006$/],
+ );
+
+ for my $time (keys %tests) {
+ my @expected = @{$tests{$time}};
+ my $scalar = pop @expected;
+
+ my @time = (localtime($time))[4,5];
+ ok( eq_array(\@time, \@expected), "localtime($time) list context" )
+ or diag("@time");
+ like scalar localtime($time), $scalar, " scalar";
+ }
+}
+
+# Test floating point args
+{
+ warning_is(sub {is( (localtime(1296000.23))[5] + 1900, 1970 )},
+ undef, 'Ignore fractional time');
+ warning_is(sub {is( (gmtime(1.23))[5] + 1900, 1970 )},
+ undef, 'Ignore fractional time');
+}
+
+
+# Some sanity tests for the far, far future and far, far past
+{
+ my %time2year = (
+ -2**52 => -142711421,
+ -2**48 => -8917617,
+ -2**46 => -2227927,
+ 2**46 => 2231866,
+ 2**48 => 8921556,
+ 2**52 => 142715360,
+ );
+
+ for my $time (sort keys %time2year) {
+ my $want = $time2year{$time};
+
+ my $have = (gmtime($time))[5] + 1900;
+ is $have, $want, "year check, gmtime($time)";
+
+ $have = (localtime($time))[5] + 1900;
+ is $have, $want, "year check, localtime($time)";
+ }
+}
+
+
+# Test that Perl warns properly when it can't handle a time.
+{
+ my $warning;
+ local $SIG{__WARN__} = sub { $warning .= join "\n", @_; };
+
+ my $big_time = 2**60;
+ my $small_time = -2**60;
+
+ $warning = '';
+ my $date = gmtime($big_time);
+ like $warning, qr/^gmtime(.*) too large/;
+
+ $warning = '';
+ $date = localtime($big_time);
+ like $warning, qr/^localtime(.*) too large/;
+
+ $warning = '';
+ $date = gmtime($small_time);
+ like $warning, qr/^gmtime(.*) too small/;
+
+ $warning = '';
+ $date = localtime($small_time);
+ like $warning, qr/^localtime(.*) too small/;
+}
+
+SKIP: { #rt #73040
+ # these are from the definitions of TIME_LOWER_BOUND AND TIME_UPPER_BOUND
+ my $smallest = -67768100567755200.0;
+ my $biggest = 67767976233316800.0;
+
+ # offset to a value that will fail
+ my $small_time = $smallest - 200;
+ my $big_time = $biggest + 200;
+
+ # check they're representable - typically means NV is
+ # long double
+ if ($small_time + 200 != $smallest
+ || $small_time == $smallest
+ || $big_time - 200 != $biggest
+ || $big_time == $biggest) {
+ skip "Can't represent test values", 4;
+ }
+ my $small_time_f = sprintf("%.0f", $small_time);
+ my $big_time_f = sprintf("%.0f", $big_time);
+
+ # check the numbers in the warning are correct
+ my $warning;
+ local $SIG{__WARN__} = sub { $warning .= join "\n", @_; };
+ $warning = '';
+ my $date = gmtime($big_time);
+ like $warning, qr/^gmtime\($big_time_f\) too large/;
+
+ $warning = '';
+ $date = localtime($big_time);
+ like $warning, qr/^localtime\($big_time_f\) too large/;
+
+ $warning = '';
+ $date = gmtime($small_time);
+ like $warning, qr/^gmtime\($small_time_f\) too small/;
+
+ $warning = '';
+ $date = localtime($small_time);
+ like $warning, qr/^localtime\($small_time_f\) too small/;
+
+}
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