Add a note to some invasive tests
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/suites/test_suite_psa_its.function b/tests/suites/test_suite_psa_its.function
index a1d39bf..04a735a 100644
--- a/tests/suites/test_suite_psa_its.function
+++ b/tests/suites/test_suite_psa_its.function
@@ -1,4 +1,10 @@
/* BEGIN_HEADER */
+
+/* This test file is specific to the ITS implementation in PSA Crypto
+ * on top of stdio. It expects to know what the stdio name of a file is
+ * based on its keystore name.
+ */
+
#include "../library/psa_crypto_its.h"
#include "psa_helpers.h"