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|
use strict;
use warnings;
use Test::More;
use DateTime;
use DateTime::Locale;
my $pos = DateTime::Infinite::Future->new;
my $neg = DateTime::Infinite::Past->new;
my $posinf = DateTime::INFINITY;
my $neginf = DateTime::NEG_INFINITY;
my $nan_string = DateTime::NAN;
# infinite date math
{
ok( $pos->is_infinite, 'positive infinity should be infinite' );
ok( $neg->is_infinite, 'negative infinity should be infinite' );
ok( !$pos->is_finite, 'positive infinity should not be finite' );
ok( !$neg->is_finite, 'negative infinity should not be finite' );
# These methods produce numbers or strings - we want to make sure they all
# return Inf or -Inf as expected.
my @ification_methods = qw(
ymd mdy dmy hms time iso8601 datetime
year ce_year month day day_of_week
quarter
hour hour_1 hour_12 hour_12_0 minute second
fractional_second
week week_year week_number
mjd jd
nanosecond millisecond microsecond
epoch
);
for my $meth (@ification_methods) {
is( $pos->$meth, $posinf, "+Infinity $meth returns $posinf" );
is( $neg->$meth, $neginf, "-Infinity $meth returns $neginf" );
}
# that's a long time ago!
my $long_ago = DateTime->new( year => -100_000 );
ok(
$neg < $long_ago,
'negative infinity is really negative'
);
my $far_future = DateTime->new( year => 100_000 );
ok(
$pos > $far_future,
'positive infinity is really positive'
);
ok(
$pos > $neg,
'positive infinity is bigger than negative infinity'
);
my $pos_dur = $pos - $far_future;
ok(
$pos_dur->is_positive,
'infinity - normal = infinity'
);
my $pos2 = $long_ago + $pos_dur;
ok(
$pos2 == $pos,
'normal + infinite duration = infinity'
);
my $neg_dur = $far_future - $pos;
ok(
$neg_dur->is_negative,
'normal - infinity = neg infinity'
);
my $neg2 = $long_ago + $neg_dur;
ok(
$neg2 == $neg,
'normal + neg infinite duration = neg infinity'
);
my $dur = $pos - $pos;
my %deltas = $dur->deltas;
my @compare = qw( days seconds nanoseconds );
foreach (@compare) {
# NaN != NaN (but should stringify the same)
is(
$deltas{$_} . q{}, $nan_string,
"infinity - infinity = nan ($_)"
);
}
my $new_pos = $pos->clone->add( days => 10 );
ok(
$new_pos == $pos,
'infinity + normal duration = infinity'
);
my $new_pos2 = $pos->clone->subtract( days => 10 );
ok(
$new_pos2 == $pos,
'infinity - normal duration = infinity'
);
ok(
$pos == $posinf,
'infinity (datetime) == infinity (number)'
);
ok(
$neg == $neginf,
'neg infinity (datetime) == neg infinity (number)'
);
}
# This could vary across platforms
my $pos_as_string = $posinf . q{};
my $neg_as_string = $neginf . q{};
# formatting
{
foreach my $m (
qw( year month day hour minute second
microsecond millisecond nanosecond )
) {
is(
$pos->$m() . q{}, $pos_as_string,
"pos $m is $pos_as_string"
);
is(
$neg->$m() . q{}, $neg_as_string,
"neg $m is $pos_as_string"
);
}
}
{
my $now = DateTime->now;
is(
DateTime->compare( $pos, $now ), 1,
'positive infinite is greater than now'
);
is(
DateTime->compare( $neg, $now ), -1,
'negative infinite is less than now'
);
}
{
my $now = DateTime->now;
my $pos2 = $pos + DateTime::Duration->new( months => 1 );
ok(
$pos == $pos2,
'infinity (datetime) == infinity (datetime)'
);
}
{
my $now = DateTime->now;
my $neg2 = $neg + DateTime::Duration->new( months => 1 );
ok(
$neg == $neg2,
'-infinity (datetime) == -infinity (datetime)'
);
}
{
cmp_ok(
"$pos", 'eq', $posinf,
'stringified infinity (datetime) eq infinity (number)'
);
cmp_ok(
"$neg", 'eq', $neginf,
'stringified neg infinity (datetime) eq neg infinity (number)'
);
}
{
is(
$pos->day_name(),
undef,
'day_name returns undef',
);
is(
$pos->am_or_pm(),
undef,
'am_or_pm returns undef'
);
is(
$pos->locale()->name(),
'Fake locale for Infinite DateTime objects',
'locale name for fake locale'
);
is(
$pos->locale()->datetime_format_long(),
DateTime::Locale->load('en_US')->datetime_format_long(),
'fake locale returns same format as en_US'
);
}
done_testing();
|
