1 files changed, 122 insertions, 0 deletions
diff --git a/t/t1419-exclude-refs.sh b/t/t1419-exclude-refs.sh
new file mode 100755
index 0000000000..5d8c86b657
--- /dev/null
+++ b/t/t1419-exclude-refs.sh
@@ -0,0 +1,122 @@
+#!/bin/sh
+
+test_description='test exclude_patterns functionality in main ref store'
+
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
+TEST_PASSES_SANITIZE_LEAK=true
+. ./test-lib.sh
+
+for_each_ref__exclude () {
+	GIT_TRACE2_PERF=1 test-tool ref-store main \
+		for-each-ref--exclude "$@" >actual.raw
+	cut -d ' ' -f 2 actual.raw
+}
+
+for_each_ref () {
+	git for-each-ref --format='%(refname)' "$@"
+}
+
+assert_jumps () {
+	local nr="$1"
+	local trace="$2"
+
+	grep -q "name:jumps_made value:$nr$" $trace
+}
+
+assert_no_jumps () {
+	! assert_jumps ".*" "$1"
+}
+
+test_expect_success 'setup' '
+	test_commit --no-tag base &&
+	base="$(git rev-parse HEAD)" &&
+
+	for name in foo bar baz quux
+	do
+		for i in 1 2 3
+		do
+			echo "create refs/heads/$name/$i $base" || return 1
+		done || return 1
+	done >in &&
+	echo "delete refs/heads/main" >>in &&
+
+	git update-ref --stdin <in &&
+	git pack-refs --all
+'
+
+test_expect_success 'excluded region in middle' '
+	for_each_ref__exclude refs/heads refs/heads/foo >actual 2>perf &&
+	for_each_ref refs/heads/bar refs/heads/baz refs/heads/quux >expect &&
+
+	test_cmp expect actual &&
+	assert_jumps 1 perf
+'
+
+test_expect_success 'excluded region at beginning' '
+	for_each_ref__exclude refs/heads refs/heads/bar >actual 2>perf &&
+	for_each_ref refs/heads/baz refs/heads/foo refs/heads/quux >expect &&
+
+	test_cmp expect actual &&
+	assert_jumps 1 perf
+'
+
+test_expect_success 'excluded region at end' '
+	for_each_ref__exclude refs/heads refs/heads/quux >actual 2>perf &&
+	for_each_ref refs/heads/foo refs/heads/bar refs/heads/baz >expect &&
+
+	test_cmp expect actual &&
+	assert_jumps 1 perf
+'
+
+test_expect_success 'disjoint excluded regions' '
+	for_each_ref__exclude refs/heads refs/heads/bar refs/heads/quux >actual 2>perf &&
+	for_each_ref refs/heads/baz refs/heads/foo >expect &&
+
+	test_cmp expect actual &&
+	assert_jumps 2 perf
+'
+
+test_expect_success 'adjacent, non-overlapping excluded regions' '
+	for_each_ref__exclude refs/heads refs/heads/bar refs/heads/baz >actual 2>perf &&
+	for_each_ref refs/heads/foo refs/heads/quux >expect &&
+
+	test_cmp expect actual &&
+	assert_jumps 1 perf
+'
+
+test_expect_success 'overlapping excluded regions' '
+	for_each_ref__exclude refs/heads refs/heads/ba refs/heads/baz >actual 2>perf &&
+	for_each_ref refs/heads/foo refs/heads/quux >expect &&
+
+	test_cmp expect actual &&
+	assert_jumps 1 perf
+'
+
+test_expect_success 'several overlapping excluded regions' '
+	for_each_ref__exclude refs/heads \
+		refs/heads/bar refs/heads/baz refs/heads/foo >actual 2>perf &&
+	for_each_ref refs/heads/quux >expect &&
+
+	test_cmp expect actual &&
+	assert_jumps 1 perf
+'
+
+test_expect_success 'non-matching excluded section' '
+	for_each_ref__exclude refs/heads refs/heads/does/not/exist >actual 2>perf &&
+	for_each_ref >expect &&
+
+	test_cmp expect actual &&
+	assert_no_jumps perf
+'
+
+test_expect_success 'meta-characters are discarded' '
+	for_each_ref__exclude refs/heads "refs/heads/ba*" >actual 2>perf &&
+	for_each_ref >expect &&
+
+	test_cmp expect actual &&
+	assert_no_jumps perf
+'
+
+test_done