[RFC PATCH 08/13] test-reach: test reduce_heads()

[Derrick Stolee <dstolee@microsoft.com>]

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
---
 t/t6600-test-reach.sh | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/t/t6600-test-reach.sh b/t/t6600-test-reach.sh
index c9337b6b46..0f60db9c60 100755
--- a/t/t6600-test-reach.sh
+++ b/t/t6600-test-reach.sh
@@ -78,4 +78,30 @@ test_expect_success 'ref_newer:miss' '
 	test_reach_two_modes "ref_newer"
 '
 
+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
+	Y:commit-10-10
+	Y:commit-3-10
+	Y:commit-9-9
+	Y:commit-8-1
+	EOF
+	printf "reduce_heads(X):\n" >expect &&
+	git rev-parse commit-5-1 >>expect &&
+	git rev-parse commit-4-4 >>expect &&
+	git rev-parse commit-3-6 >>expect &&
+	git rev-parse commit-2-8 >>expect &&
+	git rev-parse commit-1-10 >>expect &&
+	printf "reduce_heads(Y):\n" >>expect &&
+	git rev-parse commit-10-10 >>expect &&
+	test_reach_two_modes "reduce_heads"
+'
+
 test_done
-- 
2.18.0.118.gd4f65b8d14