1 files changed, 62 insertions, 0 deletions
diff --git a/t/t5544-pack-objects-hook.sh b/t/t5544-pack-objects-hook.sh
new file mode 100755
index 000000000000..4357af152566
--- /dev/null
+++ b/t/t5544-pack-objects-hook.sh
@@ -0,0 +1,62 @@
+#!/bin/sh
+
+test_description='test custom script in place of pack-objects'
+. ./test-lib.sh
+
+test_expect_success 'create some history to fetch' '
+	test_commit one &&
+	test_commit two
+'
+
+test_expect_success 'create debugging hook script' '
+	write_script .git/hook <<-\EOF
+		echo >&2 "hook running"
+		echo "$*" >hook.args
+		cat >hook.stdin
+		"$@" <hook.stdin >hook.stdout
+		cat hook.stdout
+	EOF
+'
+
+clear_hook_results () {
+	rm -rf .git/hook.* dst.git
+}
+
+test_expect_success 'hook runs via global config' '
+	clear_hook_results &&
+	test_config_global uploadpack.packObjectsHook ./hook &&
+	git clone --no-local . dst.git 2>stderr &&
+	grep "hook running" stderr
+'
+
+test_expect_success 'hook outputs are sane' '
+	# check that we recorded a usable pack
+	git index-pack --stdin <.git/hook.stdout &&
+
+	# check that we recorded args and stdin. We do not check
+	# the full argument list or the exact pack contents, as it would make
+	# the test brittle. So just sanity check that we could replay
+	# the packing procedure.
+	grep "^git" .git/hook.args &&
+	$(cat .git/hook.args) <.git/hook.stdin >replay
+'
+
+test_expect_success 'hook runs from -c config' '
+	clear_hook_results &&
+	git clone --no-local \
+	  -u "git -c uploadpack.packObjectsHook=./hook upload-pack" \
+	  . dst.git 2>stderr &&
+	grep "hook running" stderr
+'
+
+test_expect_success 'hook does not run from repo config' '
+	clear_hook_results &&
+	test_config uploadpack.packObjectsHook "./hook" &&
+	git clone --no-local . dst.git 2>stderr &&
+	! grep "hook running" stderr &&
+	test_path_is_missing .git/hook.args &&
+	test_path_is_missing .git/hook.stdin &&
+	test_path_is_missing .git/hook.stdout
+'
+
+test_done