On 4/11/25 2:00 PM, Thomas Weißschuh wrote:
Add a selftest for the kselftest harness itself so any changes can be validated.
Signed-off-by: Thomas Weißschuh thomas.weissschuh@linutronix.de
Reviewed-by: Muhammad Usama Anjum usama.anjum@collabora.com
MAINTAINERS | 1 + tools/testing/selftests/Makefile | 1 + .../testing/selftests/kselftest_harness/.gitignore | 2 + tools/testing/selftests/kselftest_harness/Makefile | 7 ++ .../selftests/kselftest_harness/harness-selftest.c | 129 +++++++++++++++++++++ .../kselftest_harness/harness-selftest.expected | 62 ++++++++++ .../kselftest_harness/harness-selftest.sh | 13 +++ 7 files changed, 215 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS index 96b82704950184bd71623ff41fc4df31e4c7fe87..9d5278df33c8b63b3b08155991b789b3a998f80e 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -21742,6 +21742,7 @@ F: include/linux/seccomp.h F: include/uapi/linux/seccomp.h F: kernel/seccomp.c F: tools/testing/selftests/kselftest_harness.h +F: tools/testing/selftests/kselftest_harness/ F: tools/testing/selftests/seccomp/* K: \bsecure_computing K: \bTIF_SECCOMP\b diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index c77c8c8e3d9bdd8047c9cb7722c3830447e504e5..27592909a5969da009d71be6c8330fe6779e7354 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -48,6 +48,7 @@ TARGETS += ipc TARGETS += ir TARGETS += kcmp TARGETS += kexec +TARGETS += kselftest_harness TARGETS += kvm TARGETS += landlock TARGETS += lib diff --git a/tools/testing/selftests/kselftest_harness/.gitignore b/tools/testing/selftests/kselftest_harness/.gitignore new file mode 100644 index 0000000000000000000000000000000000000000..e4e476a333c912602161448bc61787732a6fa2e2 --- /dev/null +++ b/tools/testing/selftests/kselftest_harness/.gitignore @@ -0,0 +1,2 @@ +/harness-selftest +/harness-selftest.seen diff --git a/tools/testing/selftests/kselftest_harness/Makefile b/tools/testing/selftests/kselftest_harness/Makefile new file mode 100644 index 0000000000000000000000000000000000000000..0617535a6ce424ff977e033b0a3a01c3117aefcf --- /dev/null +++ b/tools/testing/selftests/kselftest_harness/Makefile @@ -0,0 +1,7 @@ +# SPDX-License-Identifier: GPL-2.0
+TEST_GEN_PROGS_EXTENDED := harness-selftest +TEST_PROGS := harness-selftest.sh +EXTRA_CLEAN := harness-selftest.seen
+include ../lib.mk diff --git a/tools/testing/selftests/kselftest_harness/harness-selftest.c b/tools/testing/selftests/kselftest_harness/harness-selftest.c new file mode 100644 index 0000000000000000000000000000000000000000..8d39e7a0b99c41a5d33edfe2dbf875cac04c098d --- /dev/null +++ b/tools/testing/selftests/kselftest_harness/harness-selftest.c @@ -0,0 +1,129 @@ +// SPDX-License-Identifier: GPL-2.0
+#include <stdio.h>
+#ifndef NOLIBC +#include <sys/resource.h> +#include <sys/prctl.h> +#endif
+/* Avoid any inconsistencies */ +#define TH_LOG_STREAM stdout
+#include "../kselftest_harness.h"
+TEST(standalone_pass) {
- TH_LOG("before");
- ASSERT_EQ(0, 0);
- EXPECT_EQ(0, 0);
- TH_LOG("after");
+}
+TEST(standalone_fail) {
- TH_LOG("before");
- EXPECT_EQ(0, 0);
- EXPECT_EQ(0, 1);
- ASSERT_EQ(0, 1);
- TH_LOG("after");
+}
+TEST_SIGNAL(signal_pass, SIGUSR1) {
- TH_LOG("before");
- ASSERT_EQ(0, 0);
- TH_LOG("after");
- kill(getpid(), SIGUSR1);
+}
+TEST_SIGNAL(signal_fail, SIGUSR1) {
- TH_LOG("before");
- ASSERT_EQ(0, 1);
- TH_LOG("after");
- kill(getpid(), SIGUSR1);
+}
+FIXTURE(fixture) {
- pid_t testpid;
+};
+FIXTURE_SETUP(fixture) {
- TH_LOG("setup");
- self->testpid = getpid();
+}
+FIXTURE_TEARDOWN(fixture) {
- TH_LOG("teardown same-process=%d", self->testpid == getpid());
+}
+TEST_F(fixture, pass) {
- TH_LOG("before");
- ASSERT_EQ(0, 0);
- TH_LOG("after");
+}
+TEST_F(fixture, fail) {
- TH_LOG("before");
- ASSERT_EQ(0, 1);
- TH_LOG("after");
+}
+TEST_F_TIMEOUT(fixture, timeout, 1) {
- TH_LOG("before");
- sleep(2);
- TH_LOG("after");
+}
+FIXTURE(fixture_parent) {
- pid_t testpid;
+};
+FIXTURE_SETUP(fixture_parent) {
- TH_LOG("setup");
- self->testpid = getpid();
+}
+FIXTURE_TEARDOWN_PARENT(fixture_parent) {
- TH_LOG("teardown same-process=%d", self->testpid == getpid());
+}
+TEST_F(fixture_parent, pass) {
- TH_LOG("before");
- ASSERT_EQ(0, 0);
- TH_LOG("after");
+}
+FIXTURE(fixture_setup_failure) {
- pid_t testpid;
+};
+FIXTURE_SETUP(fixture_setup_failure) {
- TH_LOG("setup");
- self->testpid = getpid();
- ASSERT_EQ(0, 1);
+}
+FIXTURE_TEARDOWN(fixture_setup_failure) {
- TH_LOG("teardown same-process=%d", self->testpid == getpid());
+}
+TEST_F(fixture_setup_failure, pass) {
- TH_LOG("before");
- ASSERT_EQ(0, 0);
- TH_LOG("after");
+}
+int main(int argc, char **argv) +{
- /*
* The harness uses abort() to signal assertion failures, which triggers coredumps.* This may be useful to debug real failures but not for this selftest, disable them.*/- struct rlimit rlimit = {
.rlim_cur = 0,.rlim_max = 0,- };
- prctl(PR_SET_DUMPABLE, 0, 0, 0, 0);
- setrlimit(RLIMIT_CORE, &rlimit);
- return test_harness_run(argc, argv);
+} diff --git a/tools/testing/selftests/kselftest_harness/harness-selftest.expected b/tools/testing/selftests/kselftest_harness/harness-selftest.expected new file mode 100644 index 0000000000000000000000000000000000000000..1aa6461db90d4e7cc0679f19b69aadf4032875ec --- /dev/null +++ b/tools/testing/selftests/kselftest_harness/harness-selftest.expected @@ -0,0 +1,62 @@ +TAP version 13 +1..9 +# Starting 9 tests from 4 test cases. +# RUN global.standalone_pass ... +# harness-selftest.c:16:standalone_pass:before +# harness-selftest.c:19:standalone_pass:after +# OK global.standalone_pass +ok 1 global.standalone_pass +# RUN global.standalone_fail ... +# harness-selftest.c:23:standalone_fail:before +# harness-selftest.c:25:standalone_fail:Expected 0 (0) == 1 (1) +# harness-selftest.c:26:standalone_fail:Expected 0 (0) == 1 (1) +# standalone_fail: Test terminated by assertion +# FAIL global.standalone_fail +not ok 2 global.standalone_fail +# RUN global.signal_pass ... +# harness-selftest.c:31:signal_pass:before +# harness-selftest.c:33:signal_pass:after +# OK global.signal_pass +ok 3 global.signal_pass +# RUN global.signal_fail ... +# harness-selftest.c:38:signal_fail:before +# harness-selftest.c:39:signal_fail:Expected 0 (0) == 1 (1) +# signal_fail: Test terminated by assertion +# FAIL global.signal_fail +not ok 4 global.signal_fail +# RUN fixture.pass ... +# harness-selftest.c:49:pass:setup +# harness-selftest.c:58:pass:before +# harness-selftest.c:60:pass:after +# harness-selftest.c:54:pass:teardown same-process=1 +# OK fixture.pass +ok 5 fixture.pass +# RUN fixture.fail ... +# harness-selftest.c:49:fail:setup +# harness-selftest.c:64:fail:before +# harness-selftest.c:65:fail:Expected 0 (0) == 1 (1) +# harness-selftest.c:54:fail:teardown same-process=1 +# fail: Test terminated by assertion +# FAIL fixture.fail +not ok 6 fixture.fail +# RUN fixture.timeout ... +# harness-selftest.c:49:timeout:setup +# harness-selftest.c:70:timeout:before +# timeout: Test terminated by timeout +# FAIL fixture.timeout +not ok 7 fixture.timeout +# RUN fixture_parent.pass ... +# harness-selftest.c:80:pass:setup +# harness-selftest.c:89:pass:before +# harness-selftest.c:91:pass:after +# harness-selftest.c:85:pass:teardown same-process=0 +# OK fixture_parent.pass +ok 8 fixture_parent.pass +# RUN fixture_setup_failure.pass ... +# harness-selftest.c:99:pass:setup +# harness-selftest.c:101:pass:Expected 0 (0) == 1 (1) +# pass: Test terminated by assertion +# FAIL fixture_setup_failure.pass +not ok 9 fixture_setup_failure.pass +# FAILED: 4 / 9 tests passed. +# Totals: pass:4 fail:5 xfail:0 xpass:0 skip:0 error:0 diff --git a/tools/testing/selftests/kselftest_harness/harness-selftest.sh b/tools/testing/selftests/kselftest_harness/harness-selftest.sh new file mode 100755 index 0000000000000000000000000000000000000000..fe72d16370fe5bc16706289ff4e1ff44db180017 --- /dev/null +++ b/tools/testing/selftests/kselftest_harness/harness-selftest.sh @@ -0,0 +1,13 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# +# Selftest for kselftest_harness.h +#
+set -e
+DIR="$(dirname $(readlink -f "$0"))"
+"$DIR"/harness-selftest > harness-selftest.seen || true
+diff -u "$DIR"/harness-selftest.expected harness-selftest.seen