linux-kernel - [PATCH 2/3] list: test: Add a test for list_is

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Message-Id: <20220205061539.273330-2-davidgow@google.com>
Date:   Sat,  5 Feb 2022 14:15:37 +0800
From:   David Gow <davidgow@...gle.com>
To:     Shuah Khan <skhan@...uxfoundation.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Brendan Higgins <brendanhiggins@...gle.com>
Cc:     David Gow <davidgow@...gle.com>,
        Daniel Latypov <dlatypov@...gle.com>,
        linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        kunit-dev@...glegroups.com
Subject: [PATCH 2/3] list: test: Add a test for list_is_head()

list_is_head() was added recently[1], and didn't have a KUnit test. The
implementation is trivial, so it's not a particularly exciting test, but
it'd be nice to get back to full coverage of the list functions.

[1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/include/linux/list.h?id=0425473037db40d9e322631f2d4dc6ef51f97e88

Signed-off-by: David Gow <davidgow@...gle.com>
---
 lib/list-test.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/lib/list-test.c b/lib/list-test.c
index 976e9ae1f3c5..7ce7eaebe060 100644
--- a/lib/list-test.c
+++ b/lib/list-test.c
@@ -252,6 +252,15 @@ static void list_test_list_bulk_move_tail(struct kunit *test)
 	KUNIT_EXPECT_EQ(test, i, 2);
 }
 
+static void list_test_list_is_head(struct kunit *test)
+{
+	struct list_head a, b;
+
+	KUNIT_EXPECT_TRUE(test, list_is_head(&a, &a));
+	KUNIT_EXPECT_FALSE(test, list_is_head(&a, &b));
+}
+
+
 static void list_test_list_is_first(struct kunit *test)
 {
 	struct list_head a, b;
@@ -729,6 +738,7 @@ static struct kunit_case list_test_cases[] = {
 	KUNIT_CASE(list_test_list_move),
 	KUNIT_CASE(list_test_list_move_tail),
 	KUNIT_CASE(list_test_list_bulk_move_tail),
+	KUNIT_CASE(list_test_list_is_head),
 	KUNIT_CASE(list_test_list_is_first),
 	KUNIT_CASE(list_test_list_is_last),
 	KUNIT_CASE(list_test_list_empty),
-- 
2.35.0.263.gb82422642f-goog