Re: [PATCH] t2017: redo physical reflog existance check

Jonathan Nieder [off-list ref] writes:

The principle (though we do not always adhere to it) is that test
scripts should pass or fail based only on advertised behavior, not
implementation details.  That way, _later_ any person who wants to
improve the implementation will not be impeded by tests.

Well and 'nuff said ;-)  Thanks.