WIP: retrieve simple entity

test/test_transaction.cpp

@@ -31,14 +31,11 @@
 #include "test_connection.h"
 
 namespace caosdb::transaction {
-using caosdb::authentication::PlainPasswordAuthenticator;
-using caosdb::connection::CaosDBConnection;
-using caosdb::connection::SslCaosDBConnectionConfig;
 
 TEST(test_transaction, first_test) {
-  auto connection = caosdb::connection::get_test_connection();
+  const auto& connection = caosdb::connection::get_test_connection();
 
-  auto description = "This is an entity";
+  const auto *description = "This is an entity";
   auto transaction(connection->CreateTransaction());
   transaction->Retrieve(caosdb::entity::EntityID("someid"));
   transaction->Execute();