selftests/user_events: Test struct size match cases

The self tests for user_events currently does not ensure that the edge
case for struct types work properly with size differences.

Add cases for mis-matching struct names and sizes to ensure they work
properly.

Link: https://lkml.kernel.org/r/20230629235049.581-3-beaub@linux.microsoft.com
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: linux-kselftest@vger.kernel.org
Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

diff --git a/tools/testing/selftests/user_events/dyn_test.c b/tools/testing/selftests/user_events/dyn_test.c
index d6979a4..91a4444 100644 (file)
--- a/tools/testing/selftests/user_events/dyn_test.c
+++ b/tools/testing/selftests/user_events/dyn_test.c
@@ -217,6 +217,18 @@ TEST_F(user, matching) {
        /* Types don't match */
        TEST_NMATCH("__test_event u64 a; u64 b",
                    "__test_event u32 a; u32 b");
+
+       /* Struct name and size matches */
+       TEST_MATCH("__test_event struct my_struct a 20",
+                  "__test_event struct my_struct a 20");
+
+       /* Struct name don't match */
+       TEST_NMATCH("__test_event struct my_struct a 20",
+                   "__test_event struct my_struct b 20");
+
+       /* Struct size don't match */
+       TEST_NMATCH("__test_event struct my_struct a 20",
+                   "__test_event struct my_struct a 21");
 }
 
 int main(int argc, char **argv)