linux-kernel - [PATCH] kunit: Report test parameter results as (K)TAP subtests

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Message-Id: <20211006071112.2206942-1-davidgow@google.com>
Date:   Wed,  6 Oct 2021 00:11:12 -0700
From:   David Gow <davidgow@...gle.com>
To:     Brendan Higgins <brendanhiggins@...gle.com>,
        Rae Moar <rmr167@...il.com>,
        Daniel Latypov <dlatypov@...gle.com>,
        Shuah Khan <skhan@...uxfoundation.org>
Cc:     kunit-dev@...glegroups.com, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org, David Gow <davidgow@...gle.com>
Subject: [PATCH] kunit: Report test parameter results as (K)TAP subtests

Currently, the results for individial parameters in a parameterised test
are simply output as (K)TAP diagnostic lines. However, the plan was
always[1] to make these (K)TAP subtests when kunit_tool supported them.

With [2], these are now supported. (v5 will print out an error about the
missing plan line, but this can safely be ignored, and will hopefully be
changed). As a result, individual test parameter results are parsed,
displayed in the formatted results, and counted for test statistics.

[1]: https://lore.kernel.org/linux-kselftest/CABVgOSnJAgWvTTABaF082LuYjAoAWzrBsyu9sT7x4GGMVsOD6Q@mail.gmail.com/
[2]: https://lore.kernel.org/linux-kselftest/20211006001447.20919-1-dlatypov@google.com/

Signed-off-by: David Gow <davidgow@...gle.com>
---
 lib/kunit/test.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/lib/kunit/test.c b/lib/kunit/test.c
index f246b847024e..02a9fdadcae2 100644
--- a/lib/kunit/test.c
+++ b/lib/kunit/test.c
@@ -508,6 +508,8 @@ int kunit_run_tests(struct kunit_suite *suite)
 			/* Get initial param. */
 			param_desc[0] = '\0';
 			test.param_value = test_case->generate_params(NULL, param_desc);
+			kunit_log(KERN_INFO, &test, KUNIT_SUBTEST_INDENT KUNIT_SUBTEST_INDENT
+				  "# Subtest: %s", test_case->name);
 		}
 
 		do {
@@ -520,9 +522,8 @@ int kunit_run_tests(struct kunit_suite *suite)
 				}
 
 				kunit_log(KERN_INFO, &test,
-					  KUNIT_SUBTEST_INDENT
-					  "# %s: %s %d - %s",
-					  test_case->name,
+					  KUNIT_SUBTEST_INDENT KUNIT_SUBTEST_INDENT
+					  "%s %d - %s",
 					  kunit_status_to_ok_not_ok(test.status),
 					  test.param_index + 1, param_desc);
 
-- 
2.33.0.800.g4c38ced690-goog