[RFC PATCH 1/2] selftests: Start shell API

[pvorel@suse.cz (Petr Vorel)]

kselftest.sh is a beginning of shell API.
ATM it's a stub (target could be as rich as LTP API), containing only:
* exit codes
* filling TEST variable
* logging functions
* requiring root function
* add script directory into PATH

Inspired by kexec functions (with some cleanup)
and LTP.

Signed-off-by: Petr Vorel <pvorel at suse.cz>
---
 tools/testing/selftests/kselftest.sh | 53 ++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 tools/testing/selftests/kselftest.sh

diff --git a/tools/testing/selftests/kselftest.sh b/tools/testing/selftests/kselftest.sh
new file mode 100644
index 000000000000..519ec2707dd8
--- /dev/null
+++ b/tools/testing/selftests/kselftest.sh
@@ -0,0 +1,53 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2019 Petr Vorel <pvorel at suse.cz>
+
+PATH="$(dirname $0):$PATH"
+
+KSFT_PASS=0
+KSFT_FAIL=1
+KSFT_XFAIL=2
+KSFT_XPASS=3
+KSFT_SKIP=4
+
+TEST=$(basename $0)
+
+ksft_info()
+{
+	echo "[INFO] $TEST: $1"
+}
+
+ksft_pass()
+{
+	echo "[PASS] $TEST: $1"
+	exit $KSFT_PASS
+}
+
+ksft_fail()
+{
+	echo "[FAIL] $TEST: $1"
+	exit $KSFT_FAIL
+}
+
+ksft_xfail()
+{
+	echo "[FAIL] $TEST: $1"
+	exit $KSFT_XFAIL
+}
+
+ksft_xpass()
+{
+	echo "[PASS] $TEST: $1"
+	exit $KSFT_XPASS
+}
+
+ksft_skip()
+{
+	echo "[SKIP] $TEST: $1"
+	exit $KSFT_SKIP
+}
+
+ksft_require_root()
+{
+	[ $(id -ru) -eq 0 ] || ksft_skip "requires root privileges"
+}
-- 
2.20.1