Commit df82ffc5 authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Thomas Weißschuh
Browse files

selftests: harness: Add kselftest harness selftest 



Add a selftest for the kselftest harness itself so any changes can be
validated.

Signed-off-by: default avatarThomas Weißschuh <thomas.weissschuh@linutronix.de>
Reviewed-by: default avatarMuhammad Usama Anjum <usama.anjum@collabora.com>
Acked-by: default avatarShuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20250505-nolibc-kselftest-harness-v4-1-ee4dd5257135@linutronix.de


Signed-off-by: default avatarThomas Weißschuh <linux@weissschuh.net>
parent 2011097c

MAINTAINERS

+1 −0
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@@ -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

tools/testing/selftests/Makefile

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@@ -48,6 +48,7 @@ TARGETS += ipc 
TARGETS += ir

TARGETS += kcmp

TARGETS += kexec

TARGETS += kselftest_harness

TARGETS += kvm

TARGETS += landlock

TARGETS += lib

tools/testing/selftests/kselftest_harness/.gitignore

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/harness-selftest

/harness-selftest.seen

tools/testing/selftests/kselftest_harness/Makefile

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# 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

tools/testing/selftests/kselftest_harness/harness-selftest.c

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// SPDX-License-Identifier: GPL-2.0



#include <stdio.h>



#include <sys/resource.h>

#include <sys/prctl.h>



/* Avoid any inconsistencies */

#define TH_LOG_STREAM stdout



#include "../kselftest_harness.h"



static void test_helper(struct __test_metadata *_metadata)

{

	ASSERT_EQ(0, 0);

}



TEST(standalone_pass) {

	TH_LOG("before");

	ASSERT_EQ(0, 0);

	EXPECT_EQ(0, 0);

	test_helper(_metadata);

	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);

	test_helper(_metadata);

	standalone_pass(_metadata);

	TH_LOG("after");

}



TEST_F(fixture, fail) {

	TH_LOG("before");

	ASSERT_EQ(0, 1);

	fixture_pass(_metadata, self, variant);

	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);

}