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kunit: add support for named resources

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The kunit resources API allows for custom initialization and
cleanup code (init/fini); here a new resource add function sets
the "struct kunit_resource" "name" field, and calls the standard
add function.  Having a simple way to name resources is
useful in cases such as multithreaded tests where a set of
resources are shared among threads; a pointer to the
"struct kunit *" test state then is all that is needed to
retrieve and use named resources.  Support is provided to add,
find and destroy named resources; the latter two are simply
wrappers that use a "match-by-name" callback.

If an attempt to add a resource with a name that already exists
is made kunit_add_named_resource() will return -EEXIST.

Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Alan Maguire
2020-05-29 22:46:21 +01:00
committed by Shuah Khan
parent d4cdd146d0
commit 725aca9585
3 changed files with 115 additions and 0 deletions
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37
lib/kunit/kunit-test.c
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@@ -325,6 +325,42 @@ static void kunit_resource_test_static(struct kunit *test)
KUNIT_EXPECT_TRUE(test, list_empty(&test->resources));
}
static void kunit_resource_test_named(struct kunit *test)
{
struct kunit_resource res1, res2, *found = NULL;
struct kunit_test_resource_context ctx;
KUNIT_EXPECT_EQ(test,
kunit_add_named_resource(test, NULL, NULL, &res1,
"resource_1", &ctx),
0);
KUNIT_EXPECT_PTR_EQ(test, res1.data, (void *)&ctx);
KUNIT_EXPECT_EQ(test,
kunit_add_named_resource(test, NULL, NULL, &res1,
"resource_1", &ctx),
-EEXIST);
KUNIT_EXPECT_EQ(test,
kunit_add_named_resource(test, NULL, NULL, &res2,
"resource_2", &ctx),
0);
found = kunit_find_named_resource(test, "resource_1");
KUNIT_EXPECT_PTR_EQ(test, found, &res1);
if (found)
kunit_put_resource(&res1);
KUNIT_EXPECT_EQ(test, kunit_destroy_named_resource(test, "resource_2"),
0);
kunit_cleanup(test);
KUNIT_EXPECT_TRUE(test, list_empty(&test->resources));
}
static int kunit_resource_test_init(struct kunit *test)
{
struct kunit_test_resource_context *ctx =
@@ -354,6 +390,7 @@ static struct kunit_case kunit_resource_test_cases[] = {
KUNIT_CASE(kunit_resource_test_cleanup_resources),
KUNIT_CASE(kunit_resource_test_proper_free_ordering),
KUNIT_CASE(kunit_resource_test_static),
KUNIT_CASE(kunit_resource_test_named),
{}
};