[test.linear-transport...] add DG p0 case

dune/gdt/test/linear-transport/linear_transport__1d__explicit__dg_p0.cc

+// This file is part of the dune-gdt project:
+//   https://github.com/dune-community/dune-gdt
+// Copyright 2010-2017 dune-gdt developers and contributors. All rights reserved.
+// License: Dual licensed as BSD 2-Clause License (http://opensource.org/licenses/BSD-2-Clause)
+//      or  GPL-2.0+ (http://opensource.org/licenses/gpl-license)
+//          with "runtime exception" (http://www.dune-project.org/license.html)
+// Authors:
+//   Felix Schindler (2018)
+
+#define DUNE_XT_COMMON_TEST_MAIN_ENABLE_TIMED_LOGGING 1
+#define DUNE_XT_COMMON_TEST_MAIN_ENABLE_INFO_LOGGING 1
+
+#include <dune/xt/common/test/main.hxx> // <- this one has to come first (includes the config.h)!
+
+#include <dune/xt/grid/grids.hh>
+
+#include <dune/gdt/test/instationary-eocstudies/hyperbolic-nonconforming.hh>
+
+#include "base.hh"
+
+using namespace Dune;
+using namespace Dune::GDT::Test;
+
+
+using LinearTransport1dExplicitDgP0Test = LinearTransportExplicitTest<YASP_1D_EQUIDISTANT_OFFSET>;
+TEST_F(LinearTransport1dExplicitDgP0Test, periodic_boundaries__numerical_upwind_flux)
+{
+  //  this->visualization_steps_ = 100; // <- something like this to visualize
+  this->space_type_ = "dg_p0";
+  this->numerical_flux_type_ = "upwind";
+  this->run();
+}
+TEST_F(LinearTransport1dExplicitDgP0Test, periodic_boundaries__numerical_lax_riedrichs_flux)
+{
+  this->space_type_ = "fv";
+  this->numerical_flux_type_ = "lax_friedrichs";
+  this->run();
+}
+TEST_F(LinearTransport1dExplicitDgP0Test, periodic_boundaries__numerical_engquist_osher_flux)
+{
+  this->space_type_ = "fv";
+  this->numerical_flux_type_ = "engquist_osher";
+  this->run();
+}
+TEST_F(LinearTransport1dExplicitDgP0Test, periodic_boundaries__numerical_vijayasundaram_flux)
+{
+  this->space_type_ = "fv";
+  this->numerical_flux_type_ = "vijayasundaram";
+  this->run();
+}