Re: [PATCH 2/3] rebase: Add tests for console output

> Johannes Schindelin <Johannes.Schindelin@gmx.de> writes:
>
>> Also, about the commit IDs. As long as the tests are consistent (i.e. they
>> use test_commit rather than plain `git commit`, or at least call
>> `test_tick` beforehand), the commit IDs should actually be identical
>> between runs and not depend on the time of day or the date.
>>
>> The only exception to that rule is when some previous test cases call
>> `test_commit` but are guarded behind some prereq and may not be executed
>> at all. In that case, the precise commit IDs depend on the particular set
>> of active prereqs.
>
> Good observation.  The tests written such a way may make later
> introduction of new hash function troublesome, though (we already
> have tons of them, and it is already a hassle just imagining that we
> will have to migrate them X-<).
>
> And what you gave below is an excellent suggestion to even solve
> that future headaches.
>