Updates to the dagmc test and settings test from the Python API.

tests/unit_tests/dagmc/test.py

@@ -29,7 +29,9 @@ def dagmc_model(request):
     source = openmc.Source(space=source_box)
     model.settings.source = source
 
-    model.settings.dagmc = True
+    # geometry
+    dagmc_universe = openmc.DAGMCUniverse('dagmc.h5m')
+    model.geometry = openmc.Geometry(dagmc_universe)
 
     # tally
     tally = openmc.Tally()

tests/unit_tests/test_settings.py

@@ -54,7 +54,6 @@ def test_export_to_xml(run_in_tmpdir):
     s.log_grid_bins = 2000
     s.photon_transport = False
     s.electron_treatment = 'led'
-    s.dagmc = False
 
     # Make sure exporting XML works
     s.export_to_xml()
@@ -111,4 +110,3 @@ def test_export_to_xml(run_in_tmpdir):
     assert s.log_grid_bins == 2000
     assert not s.photon_transport
     assert s.electron_treatment == 'led'
-    assert not s.dagmc