linux-kernel - [PATCH 2/2] selftests/harness: Pass variant to teardown

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Date:   Thu, 24 Mar 2022 16:19:07 -0700
From:   Kees Cook <keescook@...omium.org>
To:     shuah@...nel.org
Cc:     Kees Cook <keescook@...omium.org>,
        Willem de Bruijn <willemb@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Andy Lutomirski <luto@...capital.net>,
        Will Drewry <wad@...omium.org>, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: [PATCH 2/2] selftests/harness: Pass variant to teardown

From: Willem de Bruijn <willemb@...gle.com>

FIXTURE_VARIANT data is passed to FIXTURE_SETUP and TEST_F as "variant".

In some cases, the variant will change the setup, such that expectations
also change on teardown. Also pass variant to FIXTURE_TEARDOWN.

The new FIXTURE_TEARDOWN logic is identical to that in FIXTURE_SETUP,
right above.

Signed-off-by: Willem de Bruijn <willemb@...gle.com>
Reviewed-by: Jakub Kicinski <kuba@...nel.org>
Acked-by: Kees Cook <keescook@...omium.org>
Signed-off-by: Kees Cook <keescook@...omium.org>
Link: https://lore.kernel.org/r/20201210231010.420298-1-willemdebruijn.kernel@gmail.com
---
 tools/testing/selftests/kselftest_harness.h | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/tools/testing/selftests/kselftest_harness.h b/tools/testing/selftests/kselftest_harness.h
index bef08f824eb5..f5cb5fd1d974 100644
--- a/tools/testing/selftests/kselftest_harness.h
+++ b/tools/testing/selftests/kselftest_harness.h
@@ -291,7 +291,9 @@
 #define FIXTURE_TEARDOWN(fixture_name) \
 	void fixture_name##_teardown( \
 		struct __test_metadata __attribute__((unused)) *_metadata, \
-		FIXTURE_DATA(fixture_name) __attribute__((unused)) *self)
+		FIXTURE_DATA(fixture_name) __attribute__((unused)) *self, \
+		const FIXTURE_VARIANT(fixture_name) \
+			__attribute__((unused)) *variant)
 
 /**
  * FIXTURE_VARIANT() - Optionally called once per fixture
@@ -306,9 +308,9 @@
  *       ...
  *     };
  *
- * Defines type of constant parameters provided to FIXTURE_SETUP() and TEST_F()
- * as *variant*. Variants allow the same tests to be run with different
- * arguments.
+ * Defines type of constant parameters provided to FIXTURE_SETUP(), TEST_F() and
+ * FIXTURE_TEARDOWN as *variant*. Variants allow the same tests to be run with
+ * different arguments.
  */
 #define FIXTURE_VARIANT(fixture_name) struct _fixture_variant_##fixture_name
 
@@ -391,7 +393,7 @@
 			fixture_name##_##test_name(_metadata, &self, variant->data); \
 		} \
 		if (_metadata->setup_completed) \
-			fixture_name##_teardown(_metadata, &self); \
+			fixture_name##_teardown(_metadata, &self, variant->data); \
 		__test_check_assert(_metadata); \
 	} \
 	static struct __test_metadata \
-- 
2.32.0