[Koha-bugs] [Bug 25850] CalcDateDue freezes with 'useDaysMode' set to 'Dayweek' and the due date lands on a sunday.

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=25850

--- Comment #2 from Andreas Jonsson <andreas.jonsson at kreablo.se> ---
Test plan

1. Go to tools -> calendar and make sure Sundays are holidays by adding a
holiday on a Sunday and selecting "Holiday repeated every same day of the week"
and "Copy to all libraries" and save.
2. Go to administration -> system preferences and select "Use the calendar to
push the due date to the next open matching weekday for weekly loan periods, or
the next open day otherwise" for the system preference "useDaysMode" and save
the system preferences.
3. Put the below code in a file name test.pl and execute it using the command
"sudo koha-shell -c 'perl test.pl' kohadev"

use Koha::Calendar;

my $calendar = Koha::Calendar->new( branchcode => 'CPL' );

$dt = DateTime->new(
    year       => 2020,
    month      => 06,
    day        => 21
    );

print "This is a sunday: " . $dt->day_of_week . "\n"; 

my $ndt = $calendar->next_open_days($dt, 0);

print "This is a monday: " . $ndt->day_of_week . "\n";

4. Without the patch applied, this script will freeze after printing "This is a
sunday ...".  Abort using ctrl-c.
5. Apply patch and run the script again.  The test script will now complete.

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