Re: [PATCH 1/3] cache-tree: Create/update cache-tree on checkout

[Junio C Hamano <gitster@pobox.com>]

David Turner <dturner@twopensource.com> writes:

> On Tue, 2014-07-01 at 06:16 +0200, Torsten Bögershausen wrote:
>> diff --git a/t/t0090-cache-tree.sh b/t/t0090-cache-tree.sh
>> index 6c33e28..7c60675 100755
>> --- a/t/t0090-cache-tree.sh
>> +++ b/t/t0090-cache-tree.sh
>> @@ -85,9 +85,22 @@ test_expect_success 'reset --hard without index gives cache-tree' '
>>   	test_shallow_cache_tree
>>   '
>>   
>> -test_expect_failure 'checkout gives cache-tree' '
>> +test_expect_success 'checkout gives cache-tree' '
>> +	git tag current
>>   	git checkout HEAD^ &&
>>   	test_shallow_cache_tree
>> 
>> The && chainis broken here.
>> Does the test now pass, because "git tag" is added ?
>
> The tag does not cause the cache-tree to be created, so git tag does not
> cause the test to pass.

That does not explain why it is a good idea to declare success of
this test if this new "git tag current" fails here for whatever
reason (e.g. somebody updated "git tag" for a reason that is
completely unrelated to cache-tree and made it segfault without
creating the "current" tag).