Re: [PATCH 2/2] t6500: mark tests as SHA1 reliant

> On Sun, Jul 30, 2017 at 11:00:19PM +0000, brian m. carlson wrote:
>> Yes, basically, but a bit more generally.  There will always be cases in
>> which we need to specify an object ID or an arbitrary string and the
>> behavior will need to vary based on the hash.  That can be something
>> like, in this case, the two blob contents that would have the similar
>> prefix.
>>
>> So in this case, we pass the helper the string "263 410" and get back a
>> value for either the hacked SHA-1 hash or the SHA-256 or whatever we're
>> using.
>
> I realize this was worded poorly.  So for my example, in this case, we'd
> do:
>
> test-helper-hash-string "263 410"
>
> For SHA-1, we'd get "263 410".  For SHA-256, we'd get "313 481" (which,
> as SHA-256 blobs, both start with "17" in their hex representation).
> Presumably we'd read some environment variable to determine the proper
> value.