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|
use strict;
use warnings;
use lib 't/lib';
use T::RequireDateTime;
use DateTime::Duration;
use Test::More;
use Test::Fatal;
# The point of this group of tests is to try to check that DST changes
# are occuring at exactly the right time in various time zones. It's
# important to check both pre-generated spans, as well as spans that
# have to be generated on the fly.
# Rule AN 1996 max - Mar lastSun 2:00s 0 -
# Rule AN 2000 only - Aug lastSun 2:00s 1:00 -
# Rule AN 2001 max - Oct lastSun 2:00s 1:00 -
# Zone NAME GMTOFF RULES FORMAT [UNTIL]
# Zone Australia/Sydney 10:04:52 - LMT 1895 Feb
# 10:00 Aus EST 1971
# 10:00 AN EST
{
# one minute before change to standard time
my $dt = DateTime->new(
year => 1997, month => 3, day => 29,
hour => 15, minute => 59,
time_zone => 'UTC'
);
$dt->set_time_zone('Australia/Sydney');
is( $dt->hour, 2, 'A/S 1997: hour should be 2' );
$dt->set_time_zone('UTC')->add( minutes => 1 )
->set_time_zone('Australia/Sydney');
is( $dt->hour, 2, 'A/S 1997: hour should still be 2' );
}
# same tests without using UTC as intermediate
{
# Can't start at 1:59 or we get the _2nd_ 1:59 of that day (post-DST change)
my $dt = DateTime->new(
year => 1997, month => 3, day => 30,
hour => 1, minute => 59,
time_zone => 'Australia/Sydney'
);
$dt->add( hours => 1 );
is( $dt->hour, 2, 'A/S 1997: hour should be 2' );
$dt->add( minutes => 1 );
is( $dt->hour, 2, 'A/S 1997: hour should still be 2' );
}
{
# one minute before change to standard time
my $dt = DateTime->new(
year => 2002, month => 10, day => 26,
hour => 15, minute => 59,
time_zone => 'UTC'
);
$dt->set_time_zone('Australia/Sydney');
is( $dt->hour, 1, 'A/S 2002: hour should be 1' );
$dt->set_time_zone('UTC')->add( minutes => 1 )
->set_time_zone('Australia/Sydney');
is( $dt->hour, 3, 'A/S 2002: hour should be 3' );
}
# same tests without using UTC as intermediate
{
my $dt = DateTime->new(
year => 2002, month => 10, day => 27,
hour => 1, minute => 59,
time_zone => 'Australia/Sydney'
);
is( $dt->hour, 1, 'A/S 2002: hour should be 1' );
$dt->add( minutes => 1 );
is( $dt->hour, 3, 'A/S 2002: hour should be 3' );
}
# do same tests with future dates so more data is generated
{
# Can't start at 1:59 or we get the _2nd_ 1:59 of that day (post-DST change)
my $dt = DateTime->new(
year => 2040, month => 4, day => 1,
hour => 1, minute => 59,
time_zone => 'Australia/Sydney'
);
$dt->add( hours => 1 );
is( $dt->hour, 2, 'A/S 2040: hour should be 2' );
$dt->add( minutes => 1 );
is( $dt->hour, 2, 'A/S 2040: hour should still be 2' );
}
{
my $dt = DateTime->new(
year => 2040, month => 10, day => 7,
hour => 1, minute => 59,
time_zone => 'Australia/Sydney'
);
is( $dt->hour, 1, 'A/S 2040: hour should be 1' );
$dt->add( minutes => 1 );
is( $dt->hour, 3, 'A/S 2040: hour should be 3' );
}
# Rule EU 1981 max - Mar lastSun 1:00u 1:00 S
# Rule EU 1996 max - Oct lastSun 1:00u 0 -
{
# one minute before change to standard time
my $dt = DateTime->new(
year => 1982, month => 3, day => 28,
hour => 0, minute => 59,
time_zone => 'UTC'
);
$dt->set_time_zone('Europe/Vienna');
is( $dt->hour, 1, 'E/V 1982: hour should be 1' );
$dt->set_time_zone('UTC')->add( minutes => 1 )
->set_time_zone('Europe/Vienna');
is( $dt->hour, 3, 'E/V 1982: hour should be 3' );
}
# same tests without using UTC as intermediate
{
my $dt = DateTime->new(
year => 1982, month => 3, day => 28,
hour => 1, minute => 59,
time_zone => 'Europe/Vienna'
);
is( $dt->hour, 1, 'E/V 1982: hour should be 1' );
$dt->add( minutes => 1 );
is( $dt->hour, 3, 'E/V 1982: hour should be 3' );
}
{
# one minute before change to standard time
my $dt = DateTime->new(
year => 1997, month => 10, day => 26,
hour => 0, minute => 59,
time_zone => 'UTC'
);
$dt->set_time_zone('Europe/Vienna');
is( $dt->hour, 2, 'E/V 1997: hour should be 2' );
$dt->set_time_zone('UTC')->add( minutes => 1 )
->set_time_zone('Europe/Vienna');
is( $dt->hour, 2, 'E/V 1997: hour should still be 2' );
}
# same tests without using UTC as intermediate
{
# can't be created directly because of overlap between changes
my $dt = DateTime->new(
year => 1997, month => 10, day => 26,
hour => 1, minute => 59,
time_zone => 'Europe/Vienna'
);
$dt->add( hours => 1 );
is( $dt->hour, 2, 'E/V 1997: hour should be 2' );
$dt->add( minutes => 1 );
is( $dt->hour, 2, 'E/V 1997: hour should still be 2' );
}
# future
{
my $dt = DateTime->new(
year => 2040, month => 3, day => 25,
hour => 1, minute => 59,
time_zone => 'Europe/Vienna'
);
is( $dt->hour, 1, 'E/V 2040: hour should be 1' );
$dt->add( minutes => 1 );
is( $dt->hour, 3, 'E/V 2040: hour should be 3' );
}
{
my $dt = DateTime->new(
year => 2040, month => 10, day => 28,
hour => 1, minute => 59,
time_zone => 'Europe/Vienna'
);
$dt->add( hours => 1 );
is( $dt->hour, 2, 'E/V 2040: hour should be 2' );
$dt->add( minutes => 1 );
is( $dt->hour, 2, 'E/V 2040: hour should still be 2' );
}
# Africa/Algiers has an observance that ends at 1977-10-21T00:00:00
# local time and a rule that starts at exactly the same time
# Rule Algeria 1977 only - May 6 0:00 1:00 S
# Rule Algeria 1977 only - Oct 21 0:00 0 -
#
# 0:00 Algeria WE%sT 1977 Oct 21
# 1:00 Algeria CE%sT 1979 Oct 26
{
my $dt = DateTime->new(
year => 1977, month => 10, day => 20,
hour => 23, minute => 59,
time_zone => 'Africa/Algiers'
);
is( $dt->time_zone_short_name, 'WEST', 'short name is WEST' );
is( $dt->is_dst, 1, 'is dst' );
# observance ends, new rule starts, net effect is same offset,
# different short name, no longer is DST
$dt->add( minutes => 1 );
is( $dt->time_zone_short_name, 'CET', 'short name is CET' );
is( $dt->is_dst, 0, 'is not dst' );
}
{
my $dt = DateTime->new(
year => 2000, month => 10, day => 5,
hour => 15, time_zone => 'America/Chicago',
);
is( $dt->hour, 15, 'hour is 15' );
is( $dt->offset, -18000, 'offset is -18000' );
is( $dt->is_dst, 1, 'is dst' );
$dt->set_time_zone('America/New_York');
is( $dt->offset, -14400, 'offset is -14400' );
is( $dt->is_dst, 1, 'is dst' );
is(
$dt->hour, 16,
'America/New_York is exactly one hour later than America/Chicago - hour'
);
is(
$dt->minute, 0,
'America/New_York is exactly one hour later than America/Chicago - minute'
);
is(
$dt->second, 0,
'America/New_York is exactly one hour later than America/Chicago - second'
);
}
{
# this is the second of the two 01:59:59 times for that date
my $dt = DateTime->new(
year => 2003, month => 10, day => 26,
hour => 1, minute => 59, second => 59,
time_zone => 'America/Chicago',
);
is( $dt->offset, -21600, 'offset should be -21600' );
is( $dt->is_dst, 0, 'is not dst' );
$dt->subtract( hours => 1 );
is( $dt->offset, -18000, 'offset should be -18000' );
is( $dt->is_dst, 1, 'is not dst' );
is( $dt->hour, 1, 'crossing DST boundary does not change local hour' );
}
{
my $dt = DateTime->new(
year => 2003, month => 10, day => 26,
hour => 2, time_zone => 'America/Chicago',
);
is( $dt->offset, -21600, 'offset should be -21600' );
}
{
my $dt = DateTime->new(
year => 2003, month => 10, day => 26,
hour => 3, time_zone => 'America/Chicago',
);
is( $dt->offset, -21600, 'offset should be -21600' );
}
{
like(
exception {
DateTime->new(
year => 2003, month => 4, day => 6,
hour => 2, time_zone => 'America/Chicago',
);
},
qr/Invalid local time .+/,
'exception for invalid time'
);
like(
exception {
DateTime->new(
year => 2003, month => 4, day => 6,
hour => 2, minute => 59, second => 59,
time_zone => 'America/Chicago',
);
},
qr/Invalid local time .+/,
'exception for invalid time'
);
}
{
is(
exception {
DateTime->new(
year => 2003, month => 4, day => 6,
hour => 1, minute => 59, second => 59,
time_zone => 'America/Chicago',
);
},
undef,
'no exception for valid time'
);
SKIP:
{
skip
'DateTime 0.29 has a date math bug that causes this test to fail',
1
if ( DateTime->VERSION >= 0.29 && DateTime->VERSION < 0.30 );
my $dt = DateTime->new(
year => 2003, month => 4, day => 5,
hour => 2,
time_zone => 'America/Chicago',
);
like(
exception { $dt->add( days => 1 ) },
qr/Invalid local time .+/,
'exception for invalid time produced via add'
);
}
}
{
my $dt = DateTime->new(
year => 2003, month => 4, day => 5,
hour => 2,
time_zone => 'America/Chicago',
);
is(
exception { $dt->add( hours => 24 ) },
undef,
'add 24 hours should work even if add 1 day does not'
);
is( $dt->hour, 3, 'hour should no be 3' );
}
{
my $dt = DateTime->new(
year => 2003, month => 4, day => 6,
hour => 3, time_zone => 'America/Chicago',
);
is( $dt->hour, 3, 'hour should be 3' );
is( $dt->offset, -18000, 'offset should be -18000' );
$dt->subtract( seconds => 1 );
is( $dt->hour, 1, 'hour should be 1' );
is( $dt->offset, -21600, 'offset should be -21600' );
}
{
my $dt = DateTime->new(
year => 2003, month => 4, day => 6,
hour => 3, time_zone => 'floating',
);
$dt->set_time_zone('America/Chicago');
is( $dt->hour, 3, 'hour should be 3 after switching from floating TZ' );
is(
$dt->offset, -18000,
'tz offset should be -18000'
);
}
{
my $dt = DateTime->new(
year => 2003, month => 4, day => 6,
hour => 3, time_zone => 'America/Chicago',
);
$dt->set_time_zone('floating');
is( $dt->hour, 3, 'hour should be 3 after switching to floating TZ' );
is(
$dt->local_rd_as_seconds - $dt->utc_rd_as_seconds, 0,
'tz offset should be 0'
);
}
{
like(
exception {
DateTime->new(
year => 2040, month => 3, day => 11,
hour => 2, minute => 59, second => 59,
time_zone => 'America/Chicago',
);
},
qr/Invalid local time .+/,
'exception for invalid time'
);
}
{
my $dt = DateTime->new(
year => 2001, month => 10, day => 28,
hour => 0, minute => 59,
time_zone => 'UTC'
);
$dt->set_time_zone('Europe/Vienna');
is( $dt->hour, 2, 'hour should be 2 in vienna at 00:59:00 UTC' );
$dt->set_time_zone('UTC')->add( minutes => 1 )
->set_time_zone('Europe/Vienna');
is( $dt->hour, 2, 'hour should be 2 in vienna at 01:00:00 UTC' );
}
{
# Doing this triggered a recursion bug in earlier versions of
# DateTime::TimeZone.
local $ENV{TZ} = 'America/Chicago';
my $local_tz = DateTime::TimeZone->new( name => 'America/Chicago' );
my $utc_tz = DateTime::TimeZone->new( name => 'UTC' );
my $dt = DateTime->new( year => 2050, time_zone => $local_tz );
my $sixm = DateTime::Duration->new( months => 6 );
foreach (
[ 2050, 7, 1, 1, 'CDT' ],
[ 2051, 1, 1, 0, 'CST' ],
[ 2051, 7, 1, 1, 'CDT' ],
[ 2052, 1, 1, 0, 'CST' ],
[ 2052, 7, 1, 1, 'CDT' ],
[ 2053, 1, 1, 0, 'CST' ],
[ 2053, 7, 1, 1, 'CDT' ],
[ 2054, 1, 1, 0, 'CST' ],
[ 2054, 7, 1, 1, 'CDT' ],
[ 2055, 1, 1, 0, 'CST' ],
[ 2055, 7, 1, 1, 'CDT' ],
[ 2056, 1, 1, 0, 'CST' ],
[ 2056, 7, 1, 1, 'CDT' ],
[ 2057, 1, 1, 0, 'CST' ],
[ 2057, 7, 1, 1, 'CDT' ],
[ 2058, 1, 1, 0, 'CST' ],
[ 2058, 7, 1, 1, 'CDT' ],
[ 2059, 1, 1, 0, 'CST' ],
[ 2059, 7, 1, 1, 'CDT' ],
[ 2060, 1, 1, 0, 'CST' ],
[ 2060, 7, 1, 1, 'CDT' ],
) {
$dt->set_time_zone($utc_tz);
$dt->add_duration($sixm);
$dt->set_time_zone($local_tz);
$_->[1] = sprintf( '%02d', $_->[1] );
my $expect = join q{ }, @{$_};
is(
$dt->strftime('%Y %m%e%k %Z'), $expect,
"datetime is $expect"
);
}
}
{
my $local_tz = DateTime::TimeZone->new( name => 'America/New_York' );
my $utc_tz = DateTime::TimeZone->new( name => 'UTC' );
my $dt = DateTime->new( year => 2060, time_zone => $local_tz );
my $neg_sixm = DateTime::Duration->new( months => -6 );
foreach (
[ 2059, 7, 1, 1, 'EDT' ],
[ 2059, 1, 1, 0, 'EST' ],
[ 2058, 7, 1, 1, 'EDT' ],
[ 2058, 1, 1, 0, 'EST' ],
[ 2057, 7, 1, 1, 'EDT' ],
[ 2057, 1, 1, 0, 'EST' ],
[ 2056, 7, 1, 1, 'EDT' ],
[ 2056, 1, 1, 0, 'EST' ],
[ 2055, 7, 1, 1, 'EDT' ],
[ 2055, 1, 1, 0, 'EST' ],
[ 2054, 7, 1, 1, 'EDT' ],
[ 2054, 1, 1, 0, 'EST' ],
[ 2053, 7, 1, 1, 'EDT' ],
[ 2053, 1, 1, 0, 'EST' ],
[ 2052, 7, 1, 1, 'EDT' ],
[ 2052, 1, 1, 0, 'EST' ],
[ 2051, 7, 1, 1, 'EDT' ],
[ 2051, 1, 1, 0, 'EST' ],
[ 2050, 7, 1, 1, 'EDT' ],
[ 2050, 1, 1, 0, 'EST' ],
) {
$dt->set_time_zone($utc_tz);
$dt->add_duration($neg_sixm);
$dt->set_time_zone($local_tz);
$_->[1] = sprintf( '%02d', $_->[1] );
my $expect = join q{ }, @{$_};
is(
$dt->strftime('%Y %m%e%k %Z'), $expect,
"datetime is $expect"
);
}
}
done_testing();
|
