Add warnings to test code and data about storage format stability
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 e16c050..12878b5 100644
--- a/tests/suites/test_suite_psa_its.function
+++ b/tests/suites/test_suite_psa_its.function
@@ -3,6 +3,11 @@
/* 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.
+ *
+ * Note that if you need to make a change that affects how files are
+ * stored, this may indicate that the key store is changing in a
+ * backward-incompatible way! Think carefully about backward compatibility
+ * before changing how test data is constructed or validated.
*/
#include "../library/psa_crypto_its.h"