Add missing aead state tests.

Signed-off-by: Paul Elliott <paul.elliott@arm.com>
diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function
index 9fb8363..d23ef4d 100644
--- a/tests/suites/test_suite_psa_crypto.function
+++ b/tests/suites/test_suite_psa_crypto.function
@@ -4503,6 +4503,23 @@
 
     PSA_ASSERT( psa_aead_set_nonce( &operation, nonce->x, nonce->len ) );
 
+    PSA_ASSERT( psa_aead_update_ad( &operation, additional_data->x,
+                                    additional_data->len ) );
+
+    TEST_EQUAL( psa_aead_set_lengths( &operation, additional_data->len,
+                                      input_data->len ),
+                PSA_ERROR_BAD_STATE );
+
+    psa_aead_abort( &operation );
+
+    /* ------------------------------------------------------- */
+
+    operation = psa_aead_operation_init( );
+
+    PSA_ASSERT( psa_aead_encrypt_setup( &operation, key, alg ) );
+
+    PSA_ASSERT( psa_aead_set_nonce( &operation, nonce->x, nonce->len ) );
+
     PSA_ASSERT( psa_aead_update( &operation, input_data->x,
                                  input_data->len, output_data,
                                  output_size, &output_length ) );
@@ -4574,6 +4591,29 @@
 
     psa_aead_abort( &operation );
 
+    /* Test for not sending any data after setting a non-zero length for it.*/
+
+    operation = psa_aead_operation_init( );
+
+    PSA_ASSERT( psa_aead_encrypt_setup( &operation, key, alg ) );
+
+    PSA_ASSERT( psa_aead_set_nonce( &operation, nonce->x, nonce->len ) );
+
+    PSA_ASSERT( psa_aead_set_lengths( &operation, additional_data->len,
+                                      input_data->len ) );
+
+    PSA_ASSERT( psa_aead_update_ad( &operation, additional_data->x,
+                                    additional_data->len ) );
+
+    TEST_EQUAL( psa_aead_finish( &operation, final_data,
+                                 finish_output_size,
+                                 &output_part_length,
+                                 tag_buffer, tag_length,
+                                 &tag_size ),
+                PSA_ERROR_INVALID_ARGUMENT );
+
+    psa_aead_abort( &operation );
+
     /* Test for sending too much additional data after setting lengths. */
 
     operation = psa_aead_operation_init( );