[PATCH 29/30] p1401: create performance test for ref operations

["Derrick Stolee via GitGitGadget" <gitgitgadget@gmail.com>]

From: Derrick Stolee <derrickstolee@github.com>

TBD

Signed-off-by: Derrick Stolee <derrickstolee@github.com>
---
 t/perf/p1401-ref-operations.sh | 47 ++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100755 t/perf/p1401-ref-operations.sh

diff --git a/t/perf/p1401-ref-operations.sh b/t/perf/p1401-ref-operations.sh
new file mode 100755
index 00000000000..1c372ba0ee8
--- /dev/null
+++ b/t/perf/p1401-ref-operations.sh
@@ -0,0 +1,47 @@
+#!/bin/sh
+
+test_description="Tests performance of ref operations"
+
+. ./perf-lib.sh
+
+test_perf_large_repo
+
+test_perf 'git pack-refs (v1)' '
+	git commit --allow-empty -m "change one ref" &&
+	git pack-refs --all
+'
+
+test_perf 'git for-each-ref (v1)' '
+	git for-each-ref --format="%(refname)" >/dev/null
+'
+
+test_perf 'git for-each-ref prefix (v1)' '
+	git for-each-ref --format="%(refname)" refs/tags/ >/dev/null
+'
+
+test_expect_success 'configure packed-refs v2' '
+	git config core.repositoryFormatVersion 1 &&
+	git config --add extensions.refFormat files &&
+	git config --add extensions.refFormat packed &&
+	git config --add extensions.refFormat packed-v2 &&
+	git config refs.packedRefsVersion 2 &&
+	git commit --allow-empty -m "change one ref" &&
+	git pack-refs --all &&
+	test_copy_bytes 16 .git/packed-refs | xxd >actual &&
+	grep PREF actual
+'
+
+test_perf 'git pack-refs (v2)' '
+	git commit --allow-empty -m "change one ref" &&
+	git pack-refs --all
+'
+
+test_perf 'git for-each-ref (v2)' '
+	git for-each-ref --format="%(refname)" >/dev/null
+'
+
+test_perf 'git for-each-ref prefix (v2)' '
+	git for-each-ref --format="%(refname)" refs/tags/ >/dev/null
+'
+
+test_done
-- 
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