Update the test, although broken

convergence test does not work

dune/pdelab-systemtesting/poisson/CMakeLists.txt

-add_dune_system_test(BASENAME poisson INIFILE poisson.mini SOURCE poisson_uniform.cc TARGETS output)
+#add_dune_system_test(BASENAME poisson INIFILE poisson.mini SOURCE poisson_uniform.cc TARGETS output)
+
+add_dune_convergence_test(BASENAME poisson_convergence SOURCE poisson_uniform.cc INIFILE poisson_conv.mini OUTPUT_TARGETS output)
 foreach(target ${output})
   add_dune_ug_flags(${target})
   add_dune_umfpack_flags(${target})
   add_dune_mpi_flags(${target})
   target_link_libraries(${target} ${DUNE_LIBS})
 endforeach()
+
+#add_dune_convergence_test(BASENAME poisson_convergence TARGET ${output} INIFILE poisson_conv.mini)
\ No newline at end of file

dune/pdelab-systemtesting/poisson/poisson_conv.mini

+# define some convenience variables
+dim =dim= 2#, 3
+grid =grid= yasp, ug
+degree =deg= 1, 2
+naming = {grid}_{dim}d_Q{degree}
+level ==  1,2,3,4,5
+
+# The suffix for the executable
+__exec_suffix = {naming}
+
+outputFile = output_{naming}_lev{level}
+computeError = true
+
+[vtk]
+output = False
+name = poisson_{naming}
+
+[yaspgrid]
+cells =dim= 1 1#, 1 1 1
+extension =dim= 1. 1.#, 1. 1. 1.
+refinement = {level}
+
+[ug]
+cells =dim= 1 1#, 1 1 1
+lowerleft =dim= 0. 0.#, 0. 0. 0.
+upperright =dim= 1. 1.#, 1. 1. 1.
+refinement = {level}
+
+[__STATIC.COMPILE_DEFINITIONS]
+GRIDTYPE =grid= Dune::YaspGrid<{dim}>, Dune::UGGrid<{dim}>
+DEGREE = {degree}
+
+[__CONVERGENCE_TEST]
+TestKey = level
+ExpectedRate =deg= 2, 3
+AbsoluteDiff = 0.1
\ No newline at end of file

dune/pdelab-systemtesting/poisson/poisson_uniform.cc

@@ -240,11 +240,14 @@ int main(int argc, char** argv)
     SLP slp(go,ls,x0,1e-12);
     slp.apply();
 
-    // make discrete function object
-    Dune::SubsamplingVTKWriter<GV> vtkwriter( gv, 1 );
-    //Dune::VTKWriter<GV> vtkwriter(gv,Dune::VTK::conforming);
-    Dune::PDELab::addSolutionToVTKWriter(vtkwriter,gfs,x0);
-    vtkwriter.write(params.get<std::string>("vtk.name"),Dune::VTK::ascii);
+    if (params.get<bool>("vtk.output", false))
+    {
+      // make discrete function object
+      Dune::SubsamplingVTKWriter<GV> vtkwriter( gv, 1 );
+      //Dune::VTKWriter<GV> vtkwriter(gv,Dune::VTK::conforming);
+      Dune::PDELab::addSolutionToVTKWriter(vtkwriter,gfs,x0);
+      vtkwriter.write(params.get<std::string>("vtk.name"),Dune::VTK::ascii);
+    }
 
     if (params.get<bool>("computeError", false))
     {
@@ -258,7 +261,8 @@ int main(int argc, char** argv)
 
       Dune::PDELab::integrateGridFunction(l2,currentL2Error,intorder);
       Dune::OutputTree output(params.get<std::string>("outputFile"));
-      output.set("l2error", std::sqrt(currentL2Error));
+      output.set("HMax", std::pow(grid->size(0), -1. / dim));
+      output.set("Norm", std::sqrt(currentL2Error));
     }
     return 0;
   }