[Koha-bugs] [Bug 35100] New: Items assigned to StockRotation do not advance if a reserve is triggered before the initial transfer

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=35100

            Bug ID: 35100
           Summary: Items assigned to StockRotation do not advance if a
                    reserve is triggered before the initial transfer
 Change sponsored?: ---
           Product: Koha
           Version: master
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P5 - low
         Component: Tools
          Assignee: koha-bugs at lists.koha-community.org
          Reporter: nick at bywatersolutions.com
        QA Contact: testopia at bugs.koha-community.org

I have not recreated personally, but we have found evidence of this multiple
times on a site using stock rotation 

Scenario:
1 - Item is added to stock rotation
2 - The cronjob creates a 'StockRotationAdvance' transfer
3 - The item is checked in, which initiates the transfer, however, a hold is
triggered
4 - The hold is confirmed, which cancels the StockRotationAdvance
5 - The item is checked out and returned
6 - The stock rotation cronjob eventually calls
Koha::StockRotationItem->needs_advancing which looks for all
StockRotationAdvance transfers, ordered by date arrived
7 - The only one has a NULL date arrived
8 - The date arrived is put into dt_from_string, which returns today when given
null
9 - The date object above then calls 'delta_days' from dt_from_string()
10 - The number of days from NOW to NOW is always 0
11 - The item does not advance until manually forced

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