FIX: Unit test

test/test_transaction.cpp

@@ -182,7 +182,7 @@ TEST(test_transaction, test_multi_deletion) {
   auto configuration = InsecureConnectionConfiguration(host, 8000);
   Connection connection(configuration);
   auto transaction = connection.CreateTransaction();
-  EXPECT_EQ(transaction.GetStatus().GetCode(), StatusCode::INITIAL);
+  EXPECT_EQ(transaction->GetStatus().GetCode(), StatusCode::INITIAL);
   for (int i = 0; i < 3; i++) {
     auto status = transaction->DeleteById("asdf");
     EXPECT_EQ(status, StatusCode::GO_ON);