ds/reachable (was Re: What's cooking in git.git (Jul 2018, #03; Wed, 25))

[Derrick Stolee <stolee@gmail.com>]

On 7/25/2018 6:13 PM, Junio C Hamano wrote:
> * ds/reachable (2018-07-20) 18 commits
>   - commit-reach: use can_all_from_reach
>   - commit-reach: make can_all_from_reach... linear
>   - commit-reach: replace ref_newer logic
>   - test-reach: test commit_contains
>   - test-reach: test can_all_from_reach_with_flags
>   - test-reach: test reduce_heads
>   - test-reach: test get_merge_bases_many
>   - test-reach: test is_descendant_of
>   - test-reach: test in_merge_bases
>   - test-reach: create new test tool for ref_newer
>   - commit-reach: move can_all_from_reach_with_flags
>   - upload-pack: generalize commit date cutoff
>   - upload-pack: refactor ok_to_give_up()
>   - upload-pack: make reachable() more generic
>   - commit-reach: move commit_contains from ref-filter
>   - commit-reach: move ref_newer from remote.c
>   - commit.h: remove method declarations
>   - commit-reach: move walk methods from commit.c
>   (this branch uses ds/commit-graph-fsck, jt/commit-graph-per-object-store and sb/object-store-lookup; is tangled with ds/commit-graph-with-grafts.)
>
>   The code for computing history reachability has been shuffled,
>   obtained a bunch of new tests to cover them, and then being
>   improved.
>
>   Stuck in review?
>   cf. <20180723203500.231932-1-jonathantanmy@google.com>

This comments on the initial values of 'struct ref_filter' (that are not 
used). All we need is the diff below squashed into "test-reach: test 
commit_contains".

>   cf. <20180723204112.233274-1-jonathantanmy@google.com>
This comment asks why "parse_commit()" instead of 
"parse_commit_or_die()" but the _or_die() would create a change in 
behavior that is not the purpose of the series.
>   cf. <CAGZ79kb7tWV=cmboA+nsChAUaiC+fVVM-GBCuWfsypC+-wyaVg@mail.gmail.com>

I just responded to Stefan's comment about sorting. I don't believe any 
change is needed. Some tests output multiple results and the order is 
not defined by the method contract, so 'test-tool reach <verb>' will 
always sort the output (by OID).

(Sorry for the delay. I'm on vacation.)

Thanks,
-Stolee

---

diff --git a/t/helper/test-reach.c b/t/helper/test-reach.c
index eb21103998..ca30059117 100644
--- a/t/helper/test-reach.c
+++ b/t/helper/test-reach.c
@@ -117,6 +117,7 @@ int cmd__reach(int ac, const char **av)
     struct ref_filter filter;
     struct contains_cache cache;
     init_contains_cache(&cache);
+    memset(&filter, 0, sizeof(filter));

     if (ac > 2 && !strcmp(av[2], "--tag"))
         filter.with_commit_tag_algo = 1;