- Added test coverage for X509parse
 - Fixed segfault in rsa_check_privkey() and rsa_check_pubkey() and added test

diff --git a/tests/suites/test_suite_rsa.function b/tests/suites/test_suite_rsa.function
index ab459e1..5e56ed5 100644
--- a/tests/suites/test_suite_rsa.function
+++ b/tests/suites/test_suite_rsa.function
@@ -180,6 +180,16 @@
 END_CASE
 
 BEGIN_CASE
+rsa_check_privkey_null:
+{
+    rsa_context ctx;
+    memset( &ctx, 0x00, sizeof( rsa_context ) );
+
+    TEST_ASSERT( rsa_check_privkey( &ctx ) == POLARSSL_ERR_RSA_KEY_CHECK_FAILED );
+}
+END_CASE
+
+BEGIN_CASE
 rsa_selftest:
 {
     TEST_ASSERT( rsa_self_test( 0 ) == 0 );