On Wed, 11 Jun 2025 at 15:38, Thomas Weißschuh
<thomas.weissschuh@linutronix.de> wrote:
>
> Extend the example to show how to run a userspace executable.
>
> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
> ---
Reviewed-by: David Gow <davidgow@google.com>
Cheers,
-- David
> lib/kunit/Makefile | 9 ++++++++-
> lib/kunit/kunit-example-test.c | 15 +++++++++++++++
> lib/kunit/kunit-example-uapi.c | 22 ++++++++++++++++++++++
> 3 files changed, 45 insertions(+), 1 deletion(-)
>
> diff --git a/lib/kunit/Makefile b/lib/kunit/Makefile
> index dafa09bd4241c24d31c4c19edecb67bf724127d7..e406a31df1df834a87961663de0b7921b59481c2 100644
> --- a/lib/kunit/Makefile
> +++ b/lib/kunit/Makefile
> @@ -30,4 +30,11 @@ obj-$(CONFIG_KUNIT_TEST) += string-stream-test.o
> obj-$(CONFIG_KUNIT_TEST) += assert_test.o
> endif
>
> -obj-$(CONFIG_KUNIT_EXAMPLE_TEST) += kunit-example-test.o
> +userprogs += kunit-example-uapi
> +kunit-example-uapi-userccflags := -static
> +kunit-example-uapi-nolibc := $(CONFIG_ARCH_HAS_NOLIBC)
> +blobs += kunit-example-uapi.blob.o
> +
> +obj-$(CONFIG_KUNIT_EXAMPLE_TEST) += kunit-example-mod.o
> +kunit-example-mod-y += kunit-example-test.o
> +kunit-example-mod-$(CONFIG_KUNIT_UAPI) += kunit-example-uapi.blob.o
> diff --git a/lib/kunit/kunit-example-test.c b/lib/kunit/kunit-example-test.c
> index 3056d6bc705d0a8f196f0f4412e679dbb0e03114..b2681a6e047dfd6fea4a7cca60e81651d09c2eae 100644
> --- a/lib/kunit/kunit-example-test.c
> +++ b/lib/kunit/kunit-example-test.c
> @@ -6,8 +6,11 @@
> * Author: Brendan Higgins <brendanhiggins@google.com>
> */
>
> +#include <linux/blob.h>
> +
> #include <kunit/test.h>
> #include <kunit/static_stub.h>
> +#include <kunit/uapi.h>
>
> /*
> * This is the most fundamental element of KUnit, the test case. A test case
> @@ -277,6 +280,17 @@ static void example_slow_test(struct kunit *test)
> KUNIT_EXPECT_EQ(test, 1 + 1, 2);
> }
>
> +/*
> + * This test shows the usage of UAPI tests.
> + */
> +static void example_uapi_test(struct kunit *test)
> +{
> + if (IS_ENABLED(CONFIG_KUNIT_UAPI))
> + kunit_uapi_run_kselftest(test, BLOB(kunit_example_uapi));
> + else
> + kunit_skip(test, "CONFIG_KUNIT_UAPI is not enabled");
> +}
> +
> /*
> * Here we make a list of all the test cases we want to add to the test suite
> * below.
> @@ -297,6 +311,7 @@ static struct kunit_case example_test_cases[] = {
> KUNIT_CASE(example_priv_test),
> KUNIT_CASE_PARAM(example_params_test, example_gen_params),
> KUNIT_CASE_SLOW(example_slow_test),
> + KUNIT_CASE(example_uapi_test),
> {}
> };
>
> diff --git a/lib/kunit/kunit-example-uapi.c b/lib/kunit/kunit-example-uapi.c
> new file mode 100644
> index 0000000000000000000000000000000000000000..4ce657050dd4a576632a41ca0309c4cb5134ce14
> --- /dev/null
> +++ b/lib/kunit/kunit-example-uapi.c
> @@ -0,0 +1,22 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * KUnit Userspace example test.
> + *
> + * Copyright (C) 2025, Linutronix GmbH.
> + * Author: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
> + *
> + * This is *userspace* code.
> + */
> +
> +#include "../../tools/testing/selftests/kselftest.h"
> +
> +int main(void)
> +{
> + ksft_print_header();
> + ksft_set_plan(4);
> + ksft_test_result_pass("userspace test 1\n");
> + ksft_test_result_pass("userspace test 2\n");
> + ksft_test_result_skip("userspace test 3: some reason\n");
> + ksft_test_result_pass("userspace test 4\n");
> + ksft_finished();
> +}
>
> --
> 2.49.0
>