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#!/usr/bin/perl -w
use strict;
use Test::More;
plan tests => 7;
use DateTime;
use DateTime::Set;
#======================================================================
# backtracking
#======================================================================
use constant INFINITY => 100 ** 100 ** 100 ;
use constant NEG_INFINITY => -1 * (100 ** 100 ** 100);
sub test {
my $iterator = $_[0]->iterator;
my @res;
for (1..3) {
my $tmp = $iterator->next;
push @res, $tmp->ymd if defined $tmp;
}
return join( ' ', @res );
}
my $t1 = new DateTime( year => '1810', month => '08', day => '22' );
my $t2 = new DateTime( year => '1810', month => '11', day => '24' );
my $s1 = DateTime::Set->from_datetimes( dates => [ $t1, $t2 ] );
# ------------- test a simple recurrence
my $month_callback = sub {
$_[0]->truncate( to => 'month' );
$_[0]->add( months => 1 );
return $_[0];
};
my $recurr_months = DateTime::Set->from_recurrence(
recurrence => $month_callback,
start => $t1,
);
is( test($recurr_months), '1810-09-01 1810-10-01 1810-11-01',
"months" );
# --------- test a more complex recurrence
my $day_15_callback = sub {
my $after = $_[0]->day >= 15;
$_[0]->set( day => 15 );
$_[0]->truncate( to => 'day' );
$_[0]->add( months => 1 ) if $after;
return $_[0];
};
my $recurr_day_15 = DateTime::Set->from_recurrence(
recurrence => $day_15_callback,
start => $t1,
);
is( test($recurr_day_15), '1810-09-15 1810-10-15 1810-11-15',
"recurr day 15" );
# ---------- test operations with recurrences
my $recurr_day_1_15 = $recurr_day_15 ->union( $recurr_months );
is( test($recurr_day_1_15), '1810-09-01 1810-09-15 1810-10-01',
"union of recurrences: recurr day 1,15" );
# ---------- test add() to a recurrence
my $days_15 = $recurr_months->clone->add( days => 14 );
is( test($days_15), '1810-09-15 1810-10-15 1810-11-15',
"days_15" );
# check that $recurr_months is still there
is( test($recurr_months), '1810-09-01 1810-10-01 1810-11-01',
"months is still there" );
my $days_20 = $recurr_months->clone->add( days => 19 );
is( test($days_20), '1810-09-20 1810-10-20 1810-11-20',
"days_20" );
# ---------- test operations with recurrences + add
my $days_15_and_20 = $days_15 ->union( $days_20 );
is( test($days_15_and_20), '1810-09-15 1810-09-20 1810-10-15',
"days_15_and_20" );
1;
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