Commit 37dc573c authored by David Gow's avatar David Gow Committed by Shuah Khan
Browse files

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: default avatarDavid Gow <davidgow@google.com>
Acked-by: default avatarDaniel Latypov <dlatypov@google.com>
Acked-by: default avatarBrendan Higgins <brendanhiggins@google.com>
Reviewed-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarShuah Khan <skhan@linuxfoundation.org>
parent d7fd696c

lib/list-test.c

+19 −0
Original line number Diff line number Diff line
@@ -254,6 +254,24 @@ 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, c;



	/* Two lists: [a] -> b, [c] */

	INIT_LIST_HEAD(&a);

	INIT_LIST_HEAD(&c);

	list_add_tail(&b, &a);



	KUNIT_EXPECT_TRUE_MSG(test, list_is_head(&a, &a),

		"Head element of same list");

	KUNIT_EXPECT_FALSE_MSG(test, list_is_head(&a, &b),

		"Non-head element of same list");

	KUNIT_EXPECT_FALSE_MSG(test, list_is_head(&a, &c),

		"Head element of different list");

}





static void list_test_list_is_first(struct kunit *test)

{

	struct list_head a, b;
@@ -731,6 +749,7 @@ 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),