fixed tests

Author: RemDelaporteMathurin

test/system_tests/test_multi_mat_penalty.py

@@ -88,7 +88,7 @@ def c_exact_bot_np(x):
 
     mesh, mt, ct = generate_mesh(100)
 
-    my_model = F.HTransportProblemPenalty()
+    my_model = F.HydrogenTransportProblemDiscontinuous()
     my_model.mesh = F.Mesh(mesh)
     my_model.volume_meshtags = ct
     my_model.facet_meshtags = mt

test/system_tests/test_multi_material.py

@@ -88,6 +88,7 @@ def c_exact_bot_np(x):
     mesh, mt, ct = generate_mesh(100)
 
     my_model = F.HydrogenTransportProblemDiscontinuous()
+    my_model.method_interface = "nietsche"
     my_model.mesh = F.Mesh(mesh)
     my_model.volume_meshtags = ct
     my_model.facet_meshtags = mt
@@ -341,6 +342,8 @@ def test_2_mats_particle_flux_bc(tmpdir):
     mesh, mt, ct = generate_mesh()
 
     my_model = F.HydrogenTransportProblemDiscontinuous()
+    my_model.method_interface = "nietsche"
+
     my_model.mesh = F.Mesh(mesh)
     my_model.volume_meshtags = ct
     my_model.facet_meshtags = mt