The code used native date functions, this made tests not robust.
We switch to TYPO3 API to fetch the current date and time.
Test is adjusted to define the date and time to verify code works as
expected.
The existing code didn't work with the provided data.
We added a new test case to cover the situation.
We adjusted the existing code to check on the actual rel value instead
of the keys.
Entering the continue part would end in an endless loop.
We never add anything to $i and therefore would end up here.
Existing tests ensure we don't break something.
The new test ensures we do not hit endless loop anymore.
New versions often introduce new issues breaking existing pipeline and
taking off time from the actual task.
We therefore pin versions do not get unexpected updates.
The property will always be set in the future.
We no longer can use it as an indicator.
We switch to freq as new indicator.
We also ensure that start has to be given for a single date.
Relates: #9892
Both are supported during import from destination data.
But both were not part of functional tests yet.
They are added in order to ensure that future changes wont break import
of that data
It is now possible to create "Import" records in TYPO3 system.
Those records can then be imported via two new commands.
There is no need to configure everything within the command itself.
That allows:
* To allow editors to maintain import configuration.
* Have proper labels, description, csh and UI to create import.
It no longer is necessary to copy UIDs,
instead proper wizards from TCA are available to select pages.
Relates: #9649
