Added empty cmeshes

test/t8_cmesh_generator/t8_cmesh_example_sets.hxx

@@ -32,6 +32,7 @@ along with t8code; if not, write to the Free Software Foundation, Inc.,
 #include "test/t8_cmesh_generator/t8_cmesh_parametrized_examples/t8_cmesh_new_comm.hxx"
 #include "test/t8_cmesh_generator/t8_cmesh_parametrized_examples/t8_cmesh_new_hypercube_pad.hxx"
 #include "test/t8_cmesh_generator/t8_cmesh_parametrized_examples/t8_cmesh_new_hypercube_param.hxx"
+#include "test/t8_cmesh_generator/t8_cmesh_parametrized_examples/t8_cmesh_new_empty.hxx"
 #include "test/t8_cmesh_generator/t8_gtest_cmesh_cartestian_product.hxx"
 #include "test/t8_cmesh_generator/t8_gtest_cmesh_sum_of_sets.hxx"
 
@@ -50,9 +51,9 @@ auto pretty_print_base_example = [] (const testing::TestParamInfo<cmesh_example_
 namespace cmesh_list
 {
 std::vector<example_set *> cart_prod_vec
-  = { new_from_class::cmesh_example,           new_prism_cake::cmesh_example,     new_bigmesh::cmesh_example,
-      new_cmesh_comm::cmesh_example,           new_hypercube_pad::cmesh_example,  new_hypercube_cmesh::cmesh_example,
-      new_hypercube_cmesh::cmesh_example_pyra, new_disjoint_bricks::cmesh_example };
+  = { new_from_class::cmesh_example,           new_prism_cake::cmesh_example,      new_bigmesh::cmesh_example,
+      new_cmesh_comm::cmesh_example,           new_hypercube_pad::cmesh_example,   new_hypercube_cmesh::cmesh_example,
+      new_hypercube_cmesh::cmesh_example_pyra, new_disjoint_bricks::cmesh_example, new_empty::cmesh_example };
 
 cmesh_sum_of_sets cmesh_sums (cart_prod_vec);
 

test/t8_cmesh_generator/t8_cmesh_parametrized_examples/t8_cmesh_new_empty.hxx

@@ -0,0 +1,58 @@
+/*
+This file is part of t8code.
+t8code is a C library to manage a collection (a forest) of multiple
+connected adaptive space-trees of general element classes in parallel.
+
+Copyright (C) 2024 the developers
+
+t8code is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+t8code is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with t8code; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+*/
+
+#ifndef T8_CMESH_NEW_EMPTY_HXX
+#define T8_CMESH_NEW_EMPTY_HXX
+
+#include "test/t8_cmesh_generator/t8_gtest_cmesh_cartestian_product.hxx"
+#include "test/t8_cmesh_generator/t8_cmesh_parametrized_examples/t8_cmesh_params.hxx"
+#include <t8_cmesh/t8_cmesh_examples.h>
+#include <t8_eclass.h>
+
+namespace new_empty
+{
+
+std::string
+make_param_string (const sc_MPI_Comm &comm, const int do_partition, const int dim)
+{
+  std::string delimiter = std::string ("_");
+  std::string partition = do_partition ? std::string ("partition") : std::string ("noPartition");
+  std::string params
+    = delimiter + cmesh_params::comm_to_string (comm) + delimiter + partition + delimiter + std::to_string (dim);
+  return params;
+}
+
+std::function<std::string (const sc_MPI_Comm &, const int, const int)> print_function = make_param_string;
+
+std::function<t8_cmesh_t (sc_MPI_Comm, const int, const int)> new_from_class_wrapper = t8_cmesh_new_empty;
+
+example_set *cmesh_example
+  = (example_set *) new cmesh_cartesian_product_params<decltype (cmesh_params::my_comms.begin ()),
+                                                       decltype (cmesh_params::partition.begin ()),
+                                                       decltype (cmesh_params::do_bcast.begin ())> (
+    std::make_pair (cmesh_params::my_comms.begin (), cmesh_params::my_comms.end ()),
+    std::make_pair (cmesh_params::partition.begin (), cmesh_params::partition.end ()),
+    std::make_pair (cmesh_params::do_bcast.begin (), cmesh_params::do_bcast.end ()), new_from_class_wrapper,
+    print_function, "t8_cmesh_new_empty_");
+} /* namespace new_empty */
+
+#endif /* T8_CMESH_NEW_EMPTY_HXX */