shell_loader_cmd.sh: New test case check needs_cmds

Link: https://lore.kernel.org/ltp/20260109061716.20258-5-wegao@suse.com/
Suggested-by: Petr Vorel <pvorel@suse.cz>
Reviewed-by: Petr Vorel <pvorel@suse.cz>
Reviewed-by: Cyril Hrubis <chrubis@suse.cz>
Signed-off-by: Wei Gao <wegao@suse.com>

Author: coolgw

testcases/lib/run_tests.sh

@@ -6,6 +6,7 @@ shell_loader.sh
 shell_loader_all_filesystems.sh
 shell_loader_c_child.sh
 shell_loader_filesystems.sh
+shell_loader_cmd.sh
 shell_loader_kconfigs.sh
 shell_loader_supported_archs.sh
 shell_loader_tcnt.sh

testcases/lib/tests/shell_loader_cmd.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (c) 2025 Wei Gao <wegao@suse.cz>
+#
+# ---
+# env
+# {
+#  "needs_cmds": [
+#   {
+#    "cmd": "ls",
+#    "optional": 1
+#   },
+#   {
+#    "cmd": "mkfs.ext4 >= 1.0.0",
+#    "optional": 1
+#   }
+#  ]
+# }
+# ---
+
+. tst_loader.sh
+
+tst_test()
+{
+	tst_res TPASS "We are running with needs_cmds"
+}
+
+. tst_run.sh