WIP: Add test for COUNT query

conanfile.txt

 [requires]
-caosdb/0.0.9
+caosdb/0.0.10
 gtest/1.11.0
 
 [generators]

test/test_transaction.cpp

@@ -529,6 +529,15 @@ TEST(test_transaction, test_query) {
   EXPECT_EQ(query_transaction->GetResultSet().Size(), 1);
   EXPECT_EQ(query_transaction->GetResultSet().At(0).GetId(),
             new_entity.GetId());
+  // No count query, so no count result should be present
+  EXPECT_TRUE((query_transaction->GetCountResult() < 0));
+
+  auto count_query_trans(connection->CreateTransaction());
+  count_query_trans->Query("COUNT ENTITY WITH id = " + new_entity.GetId());
+  count_query_trans->Execute();
+  // No result set in a count query
+  EXPECT_EQ(count_query_trans->GetResultSet().Size(), 0);
+  EXPECT_EQ(count_query_trans->GetCountResult(), 1);
 }
 
 // TODO(fspreck) Add tests for unique queries, count queries, and mixed