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#!/usr/bin/perl -w
use strict;
use Test::More;
plan tests => 12;
use DateTime;
use DateTime::Duration;
use DateTime::Set;
use DateTime::SpanSet;
use constant INFINITY => 100 ** 100 ** 100 ;
use constant NEG_INFINITY => -1 * (100 ** 100 ** 100);
my $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 ] );
my $month_callback = sub {
$_[0]->truncate( to => 'month' )
->add( months => 1 );
};
# "START"
my $months = DateTime::Set->from_recurrence(
recurrence => $month_callback,
start => $t1,
);
$res = $months->min;
$res = $res->ymd if ref($res);
is( $res, '1810-09-01',
"min() - got $res" );
my $iterator = $months->iterator;
my @res;
for (1..3) {
my $tmp = $iterator->next;
push @res, $tmp->ymd if defined $tmp;
}
$res = join( ' ', @res );
is( $res, '1810-09-01 1810-10-01 1810-11-01',
"3 iterations give $res" );
# sub-second iterator
{
my $count = 0;
my $micro_callback = sub {
# truncate and add to 'microsecond'
$_[0]->set( nanosecond =>
1000 * int( $_[0]->nanosecond / 1000 ) )
->add( nanoseconds => 1000 );
# warn "nanosec = ".$_[0]->datetime.'.'.sprintf('%06d',$_[0]->microsecond);
# guard against an infinite loop error
return INFINITY if $count++ > 50;
return $_[0];
};
my $microsec = DateTime::Set->from_recurrence(
recurrence => $micro_callback,
start => $t1,
);
my $iterator = $microsec->iterator;
my @res;
for (1..3) {
my $tmp = $iterator->next;
if (defined $tmp) {
my $str = $tmp->datetime.'.'.sprintf('%06d',$tmp->microsecond);
# warn "iter: $str";
push @res, $str;
}
}
$res = join( ' ', @res );
is( $res, '1810-08-22T00:00:00.000000 1810-08-22T00:00:00.000001 1810-08-22T00:00:00.000002',
"3 iterations give $res" );
}
# test the iterator limits. Ben Bennett.
{
# Make a recurrence that returns all months
my $all_months = DateTime::Set->from_recurrence( recurrence => $month_callback );
my $t1 = new DateTime( year => '1810', month => '08', day => '22' );
my $t2 = new DateTime( year => '1810', month => '11', day => '24' );
my $span = DateTime::Span->from_datetimes( start => $t1, end => $t2 );
# make an iterator with an explicit span argument
my $iter = $all_months->iterator( span => $span );
# And make sure that we run on the correct months only
my $limit = 4; # Make sure we don't hit an infinite iterator
my @res = ();
while ( my $dt = $iter->next() and $limit--) {
push @res, $dt->ymd();
}
my $res = join( ' ', @res);
is( $res, '1810-09-01 1810-10-01 1810-11-01',
"limited iterator give $res" );
{
# Make another iterator over a short time range
my $iter = $all_months->iterator( start => $t1, end => $t2 );
# And make sure that we run on the correct months only
$limit = 4; # Make sure we don't hit an infinite iterator
@res = ();
while ( my $dt = $iter->next() and $limit--) {
push @res, $dt->ymd();
}
$res = join( ' ', @res);
is( $res, '1810-09-01 1810-10-01 1810-11-01',
"limited iterator give $res" );
}
# And try looping just using a start date and get 4 items
# to make sure that we didn't damage the original set
$iter = $all_months->iterator( start => $t1 );
$limit = 4;
@res = ();
while ( my $dt = $iter->next() and $limit--) {
push @res, $dt->ymd();
}
$res = join( ' ', @res);
is( $res, '1810-09-01 1810-10-01 1810-11-01 1810-12-01',
"limited iterator give $res" );
}
# test SpanSet iterator
{
# Make a recurrence that returns all months
my $all_months = DateTime::Set->from_recurrence( recurrence => $month_callback );
$all_months = DateTime::SpanSet->from_sets(
start_set => $all_months, end_set => $all_months );
my $t1 = new DateTime( year => '1810', month => '08', day => '22' );
my $t2 = new DateTime( year => '1810', month => '11', day => '24' );
my $span = DateTime::Span->from_datetimes( start => $t1, end => $t2 );
{
# make an iterator with an explicit span argument
my $iter = $all_months->iterator( span => $span );
# And make sure that we run on the correct months only
my $limit = 4; # Make sure we don't hit an infinite iterator
my @res = ();
while ( my $span = $iter->next() and $limit--) {
push @res, $span->min->ymd() . "," . $span->max->ymd();
}
my $res = join( ' ', @res);
is( $res, '1810-08-22,1810-09-01 1810-09-01,1810-10-01 '.
'1810-10-01,1810-11-01 1810-11-01,1810-11-24',
"limited iterator give $res" );
}
{
# make an iterator, again.
my $iter = $all_months->iterator( span => $span );
# And make sure that we run on the correct months only
my $limit = 4; # Make sure we don't hit an infinite iterator
my @res = ();
while ( my $span = $iter->previous() and $limit--) {
push @res, $span->min->ymd() . "," . $span->max->ymd();
}
my $res = join( ' ', @res);
is( $res, '1810-11-01,1810-11-24 1810-10-01,1810-11-01 '.
'1810-09-01,1810-10-01 1810-08-22,1810-09-01',
"limited iterator give $res" );
}
}
{
# test intersections with open/closed ended spans
# Make a recurrence that returns all months
my $all_months = DateTime::Set->from_recurrence( recurrence => $month_callback );
my $t1 = new DateTime( year => '1810', month => '9', day => '1' );
my $t2 = new DateTime( year => '1810', month => '11', day => '1' );
{
my $span = DateTime::Span->from_datetimes( start => $t1, end => $t2 );
# make an iterator with an explicit span argument
my $iter = $all_months->iterator( span => $span );
# And make sure that we run on the correct months only
my $limit = 4; # Make sure we don't hit an infinite iterator
my @res = ();
while ( my $dt = $iter->next() and $limit--) {
push @res, $dt->ymd();
}
my $res = join( ' ', @res);
is( $res, '1810-09-01 1810-10-01 1810-11-01',
"limited iterator give $res" );
}
{
my $span = DateTime::Span->from_datetimes( start => $t1, before => $t2 );
# make an iterator with an explicit span argument
my $iter = $all_months->iterator( span => $span );
# And make sure that we run on the correct months only
my $limit = 4; # Make sure we don't hit an infinite iterator
my @res = ();
while ( my $dt = $iter->next() and $limit--) {
push @res, $dt->ymd();
}
my $res = join( ' ', @res);
is( $res, '1810-09-01 1810-10-01',
"limited iterator give $res" );
}
{
my $span = DateTime::Span->from_datetimes( after => $t1, end => $t2 );
# make an iterator with an explicit span argument
my $iter = $all_months->iterator( span => $span );
# And make sure that we run on the correct months only
my $limit = 4; # Make sure we don't hit an infinite iterator
my @res = ();
while ( my $dt = $iter->next() and $limit--) {
push @res, $dt->ymd();
}
my $res = join( ' ', @res);
is( $res, '1810-10-01 1810-11-01',
"limited iterator give $res" );
}
{
my $span = DateTime::Span->from_datetimes( after => $t1, before => $t2 );
# make an iterator with an explicit span argument
my $iter = $all_months->iterator( span => $span );
# And make sure that we run on the correct months only
my $limit = 4; # Make sure we don't hit an infinite iterator
my @res = ();
while ( my $dt = $iter->next() and $limit--) {
push @res, $dt->ymd();
}
my $res = join( ' ', @res);
is( $res, '1810-10-01',
"limited iterator give $res" );
}
}
1;
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