@@ -37,6 +37,7 @@ TEST_PROGS = bridge_fdb_learning_limit.sh \
ipip_hier_gre_key.sh \
ipip_hier_gre_keys.sh \
ipip_hier_gre.sh \
+ lib_sh_test.sh \
local_termination.sh \
mirror_gre_bound.sh \
mirror_gre_bridge_1d.sh \
new file mode 100755
@@ -0,0 +1,208 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+# This tests the operation of lib.sh itself.
+
+ALL_TESTS="
+ test_ret
+ test_exit_status
+"
+NUM_NETIFS=0
+source lib.sh
+
+# Simulated checks.
+
+do_test()
+{
+ local msg=$1; shift
+
+ "$@"
+ check_err $? "$msg"
+}
+
+tpass()
+{
+ do_test "tpass" true
+}
+
+tfail()
+{
+ do_test "tfail" false
+}
+
+txfail()
+{
+ FAIL_TO_XFAIL=yes do_test "txfail" false
+}
+
+# Simulated tests.
+
+pass()
+{
+ RET=0
+ do_test "true" true
+ log_test "true"
+}
+
+fail()
+{
+ RET=0
+ do_test "false" false
+ log_test "false"
+}
+
+xfail()
+{
+ RET=0
+ FAIL_TO_XFAIL=yes do_test "xfalse" false
+ log_test "xfalse"
+}
+
+skip()
+{
+ RET=0
+ log_test_skip "skip"
+}
+
+slow_xfail()
+{
+ RET=0
+ xfail_on_slow do_test "slow_false" false
+ log_test "slow_false"
+}
+
+# lib.sh tests.
+
+ret_tests_run()
+{
+ local t
+
+ RET=0
+ retmsg=
+ for t in "$@"; do
+ $t
+ done
+ echo "$retmsg"
+ return $RET
+}
+
+ret_subtest()
+{
+ local expect_ret=$1; shift
+ local expect_retmsg=$1; shift
+ local -a tests=( "$@" )
+
+ local status_names=(pass fail xfail xpass skip)
+ local ret
+ local out
+
+ RET=0
+
+ # Run this in a subshell, so that our environment is intact.
+ out=$(ret_tests_run "${tests[@]}")
+ ret=$?
+
+ (( ret == expect_ret ))
+ check_err $? "RET=$ret expected $expect_ret"
+
+ [[ $out == $expect_retmsg ]]
+ check_err $? "retmsg=$out expected $expect_retmsg"
+
+ log_test "RET $(echo ${tests[@]}) -> ${status_names[$ret]}"
+}
+
+test_ret()
+{
+ ret_subtest $ksft_pass ""
+
+ ret_subtest $ksft_pass "" tpass
+ ret_subtest $ksft_fail "tfail" tfail
+ ret_subtest $ksft_xfail "txfail" txfail
+
+ ret_subtest $ksft_pass "" tpass tpass
+ ret_subtest $ksft_fail "tfail" tpass tfail
+ ret_subtest $ksft_xfail "txfail" tpass txfail
+
+ ret_subtest $ksft_fail "tfail" tfail tpass
+ ret_subtest $ksft_xfail "txfail" txfail tpass
+
+ ret_subtest $ksft_fail "tfail" tfail tfail
+ ret_subtest $ksft_fail "tfail" tfail txfail
+
+ ret_subtest $ksft_fail "tfail" txfail tfail
+
+ ret_subtest $ksft_xfail "txfail" txfail txfail
+}
+
+exit_status_tests_run()
+{
+ EXIT_STATUS=0
+ tests_run > /dev/null
+ return $EXIT_STATUS
+}
+
+exit_status_subtest()
+{
+ local expect_exit_status=$1; shift
+ local tests=$1; shift
+ local what=$1; shift
+
+ local status_names=(pass fail xfail xpass skip)
+ local exit_status
+ local out
+
+ RET=0
+
+ # Run this in a subshell, so that our environment is intact.
+ out=$(TESTS="$tests" exit_status_tests_run)
+ exit_status=$?
+
+ (( exit_status == expect_exit_status ))
+ check_err $? "EXIT_STATUS=$exit_status, expected $expect_exit_status"
+
+ log_test "EXIT_STATUS $tests$what -> ${status_names[$exit_status]}"
+}
+
+test_exit_status()
+{
+ exit_status_subtest $ksft_pass ":"
+
+ exit_status_subtest $ksft_pass "pass"
+ exit_status_subtest $ksft_fail "fail"
+ exit_status_subtest $ksft_pass "xfail"
+ exit_status_subtest $ksft_skip "skip"
+
+ exit_status_subtest $ksft_pass "pass pass"
+ exit_status_subtest $ksft_fail "pass fail"
+ exit_status_subtest $ksft_pass "pass xfail"
+ exit_status_subtest $ksft_skip "pass skip"
+
+ exit_status_subtest $ksft_fail "fail pass"
+ exit_status_subtest $ksft_pass "xfail pass"
+ exit_status_subtest $ksft_skip "skip pass"
+
+ exit_status_subtest $ksft_fail "fail fail"
+ exit_status_subtest $ksft_fail "fail xfail"
+ exit_status_subtest $ksft_fail "fail skip"
+
+ exit_status_subtest $ksft_fail "xfail fail"
+ exit_status_subtest $ksft_fail "skip fail"
+
+ exit_status_subtest $ksft_pass "xfail xfail"
+ exit_status_subtest $ksft_skip "xfail skip"
+ exit_status_subtest $ksft_skip "skip xfail"
+
+ exit_status_subtest $ksft_skip "skip skip"
+
+ KSFT_MACHINE_SLOW=yes \
+ exit_status_subtest $ksft_pass "slow_xfail" ": slow"
+
+ KSFT_MACHINE_SLOW=no \
+ exit_status_subtest $ksft_fail "slow_xfail" ": fast"
+}
+
+trap pre_cleanup EXIT
+
+tests_run
+
+exit $EXIT_STATUS
Rerunning various scenarios to make sure lib.sh changes do not impact the observable behavior is no fun. Add a selftest at least for the bare basics -- the mechanics of setting RET, retmsg, and EXIT_STATUS. Since the selftest itself uses lib.sh, it would be possible to break lib.sh in such a way that invalidates result of the selftest. Since the metatest only uses the bare basics (just pass/fail), hopefully such fundamental breakages would be noticed. Signed-off-by: Petr Machata <petrm@nvidia.com> --- .../testing/selftests/net/forwarding/Makefile | 1 + .../selftests/net/forwarding/lib_sh_test.sh | 208 ++++++++++++++++++ 2 files changed, 209 insertions(+) create mode 100755 tools/testing/selftests/net/forwarding/lib_sh_test.sh