Katharina Heck authored Apr 28, 2021 and Timo Koch committed May 05, 2021

[richards][test] add robin flux derivative for analytic differentiation in lens and benchmark problem

Gabi Seitz authored Sep 30, 2020 and Timo Koch committed Apr 05, 2021

with contributions of Holger and Bernd

The following test results had to be adapted:
test_md_boundary_darcy2p2c_stokes1p2c_horizontal
test_md_boundary_darcy2p2cni_stokes1p2cni_horizontal
test_2p1cni_steaminjection_waterwet_box
test_2p1cni_steaminjection_waterwet_tpfa
test_2p2cni_waterair_box
test_2p2cni_waterair_buoyancy_box
test_dec2p2c
test_multiphysics2p2c
test_1pncmin_box
test_3p3cni_kuevette_box
test_3p3cni_kuevette_tpfa
test_3pwateroil_sagd_box

This implementation should be replaced as soon as the new assembly is
available. For now, this tests if NewtonSolver supports the new grid
variables-based assembly.

* fix sporadically failing test by using unique names for dgf files

Christoph Grüninger authored Mar 07, 2021 and Dennis Gläser committed Mar 09, 2021

Replace DUNE_UNUSED that is Dune specific.
Remove the attribute at one place where the variable
is used in the line after declaration.