On Mon, Feb 7, 2022 at 8:02 PM David Gow <davidgow@xxxxxxxxxx> wrote: > > The list_entry_is_head() macro was added[1] after the list KUnit tests, > so wasn't tested. Add a new KUnit test to complete the set. > > [1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e130816164e244b692921de49771eeb28205152d > > Signed-off-by: David Gow <davidgow@xxxxxxxxxx> Acked-by: Daniel Latypov <dlatypov@xxxxxxxxxx> Similar to the previous patch, we can maybe consider using the _MSG variants here > --- > > Changes since v1: > https://lore.kernel.org/linux-kselftest/20220205061539.273330-3-davidgow@xxxxxxxxxx/ > - Rework the test entirely to better match the improved list_is_head() > test. > > --- > lib/list-test.c | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) > > diff --git a/lib/list-test.c b/lib/list-test.c > index 1960615d1a9f..80dd14c4ca1f 100644 > --- a/lib/list-test.c > +++ b/lib/list-test.c > @@ -546,6 +546,22 @@ static void list_test_list_entry(struct kunit *test) > struct list_test_struct, list)); > } > > +static void list_test_list_entry_is_head(struct kunit *test) > +{ > + struct list_test_struct test_struct1, test_struct2, test_struct3; > + > + INIT_LIST_HEAD(&test_struct1.list); > + INIT_LIST_HEAD(&test_struct3.list); > + > + list_add_tail(&test_struct2.list, &test_struct1.list); > + > + KUNIT_EXPECT_TRUE(test, list_entry_is_head((&test_struct1), &test_struct1.list, list)); > + /* Non-head element of same list */ > + KUNIT_EXPECT_FALSE(test, list_entry_is_head((&test_struct2), &test_struct1.list, list)); > + /* Head element of different list */ > + KUNIT_EXPECT_FALSE(test, list_entry_is_head((&test_struct3), &test_struct1.list, list)); Unlike the list_is_head() * this macro is marginally more complicated (barely). * these lines already go over 80 chars. * macros in EXPECT's get printed out in expanded form (less legible on their own than a func call is) So perhaps KUNIT_EXPECT_FALSE_MSG(test, ..., "Head element of different list") ? > +} > + > static void list_test_list_first_entry(struct kunit *test) > { > struct list_test_struct test_struct1, test_struct2; > @@ -761,6 +777,7 @@ static struct kunit_case list_test_cases[] = { > KUNIT_CASE(list_test_list_splice_init), > KUNIT_CASE(list_test_list_splice_tail_init), > KUNIT_CASE(list_test_list_entry), > + KUNIT_CASE(list_test_list_entry_is_head), > KUNIT_CASE(list_test_list_first_entry), > KUNIT_CASE(list_test_list_last_entry), > KUNIT_CASE(list_test_list_first_entry_or_null), > -- > 2.35.0.263.gb82422642f-goog >
