[PATCH v2 1/2] test-lib.sh: add limited processes to test-lib

From: Han Xin <hanxin.hx@bytedance.com>
Date: Jun 24, 2022, 05:27 UTC
Message-ID: <442a4c351dea603e226bae89eddc2b3496d93262.1656044659.git.hanxin.hx@bytedance.com>
In-Reply-To: <cover.1656044659.git.hanxin.hx@bytedance.com>

We will use the lazy prerequisite ULIMIT_PROCESSES in a follow-up commit.

With run_with_limited_processses() we can limit forking subprocesses and fail reliably in some test cases.

Signed-off-by: Han Xin <hanxin.hx@bytedance.com>
---
 t/test-lib.sh | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/t/test-lib.sh b/t/test-lib.sh
index 8ba5ca1534..f920e3b0ae 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -1816,6 +1816,15 @@ test_lazy_prereq ULIMIT_FILE_DESCRIPTORS '
 	run_with_limited_open_files true
 '
 
+run_with_limited_processses () {
+	(ulimit -u 512 && "$@")
+}
+
+test_lazy_prereq ULIMIT_PROCESSES '
+	test_have_prereq !HPPA,!MINGW,!CYGWIN &&
+	run_with_limited_processses true
+'
+
 build_option () {
 	git version --build-options |
 	sed -ne "s/^$1: //p"

-- 
2.36.1