Add test for parsing SAN: rfc822Name

Signed-off-by: Przemek Stekiel <przemyslaw.stekiel@mobica.com>
diff --git a/tests/suites/test_suite_x509parse.function b/tests/suites/test_suite_x509parse.function
index 3454da3..f6e4a06 100644
--- a/tests/suites/test_suite_x509parse.function
+++ b/tests/suites/test_suite_x509parse.function
@@ -279,7 +279,18 @@
                 *p++ = san->san.unstructured_name.p[i];
             }
             break;/* MBEDTLS_X509_SAN_DNS_NAME */
-
+        case (MBEDTLS_X509_SAN_RFC822_NAME):
+            ret = mbedtls_snprintf(p, n, "\nrfc822Name : ");
+            MBEDTLS_X509_SAFE_SNPRINTF;
+            if (san->san.unstructured_name.len >= n) {
+                *p = '\0';
+                return MBEDTLS_ERR_X509_BUFFER_TOO_SMALL;
+            }
+            n -= san->san.unstructured_name.len;
+            for (i = 0; i < san->san.unstructured_name.len; i++) {
+                *p++ = san->san.unstructured_name.p[i];
+            }
+            break;/* MBEDTLS_X509_SAN_RFC822_NAME */
         default:
             /*
              * Should not happen.