[PATCH v2 13/18] test-reach: test reduce_heads

[Derrick Stolee]

Signed-off-by: Derrick Stolee <dsto...@microsoft.com>
---
 t/helper/test-reach.c |  4 ++++
 t/t6600-test-reach.sh | 22 ++++++++++++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/t/helper/test-reach.c b/t/helper/test-reach.c
index 4df01187c9..e32e193b70 100644
--- a/t/helper/test-reach.c
+++ b/t/helper/test-reach.c
@@ -102,6 +102,10 @@ int cmd__reach(int ac, const char **av)
                struct commit_list *list = get_merge_bases_many(A, X_nr, 
X_array);
                printf("%s(A,X):\n", av[1]);
                print_sorted_commit_ids(list);
+       } else if (!strcmp(av[1], "reduce_heads")) {
+               struct commit_list *list = reduce_heads(X);
+               printf("%s(X):\n", av[1]);
+               print_sorted_commit_ids(list);
        }
 
        exit(0);
diff --git a/t/t6600-test-reach.sh b/t/t6600-test-reach.sh
index d43e1a61d5..17c6467988 100755
--- a/t/t6600-test-reach.sh
+++ b/t/t6600-test-reach.sh
@@ -138,4 +138,26 @@ test_expect_success 'get_merge_bases_many' '
        test_three_modes get_merge_bases_many
 '
 
+test_expect_success 'reduce_heads' '
+       cat >input <<-\EOF &&
+       X:commit-1-10
+       X:commit-2-8
+       X:commit-3-6
+       X:commit-4-4
+       X:commit-1-7
+       X:commit-2-5
+       X:commit-3-3
+       X:commit-5-1
+       EOF
+       {
+               echo "reduce_heads(X):" &&
+               git rev-parse commit-5-1 \
+                             commit-4-4 \
+                             commit-3-6 \
+                             commit-2-8 \
+                             commit-1-10 | sort
+       } >expect &&
+       test_three_modes reduce_heads
+'
+
 test_done
-- 
2.18.0.118.gd4f65b8d14