Finishing test setup.

tests/regression_tests/dagmc/refl/inputs_true.dat

@@ -0,0 +1,23 @@
+<?xml version='1.0' encoding='utf-8'?>
+<settings>
+  <run_mode>eigenvalue</run_mode>
+  <particles>100</particles>
+  <batches>5</batches>
+  <inactive>0</inactive>
+  <source strength="1.0">
+    <space type="box">
+      <parameters>-4 -4 -4 4 4 4</parameters>
+    </space>
+  </source>
+  <dagmc>true</dagmc>
+</settings>
+<?xml version='1.0' encoding='utf-8'?>
+<tallies>
+  <filter id="1" type="cell">
+    <bins>1</bins>
+  </filter>
+  <tally id="1">
+    <filters>1</filters>
+    <scores>total</scores>
+  </tally>
+</tallies>

tests/regression_tests/dagmc/refl/results_true.dat

@@ -0,0 +1,5 @@
+k-combined:
+2.053871E+00 7.718195E-03
+tally 1:
+1.171003E+01
+2.864565E+01

tests/regression_tests/dagmc/refl/test.py

@@ -0,0 +1,41 @@
+import openmc
+import openmc.capi
+from openmc.stats import Box
+from openmc.material import Materials
+
+import pytest
+from tests.testing_harness import PyAPITestHarness
+
+pytestmark = pytest.mark.skipif(
+    not openmc.capi._dagmc_enabled(),
+    reason="DAGMC CAD geometry is not enabled.")
+
+class UWUWTest(PyAPITestHarness):
+
+    def _build_inputs(self):
+        model = openmc.model.Model()
+
+        # settings
+        model.settings.batches = 5
+        model.settings.inactive = 0
+        model.settings.particles = 100
+
+        source = openmc.Source(space=Box([-4, -4, -4],
+                                         [ 4,  4,  4]))
+        model.settings.source = source
+
+        model.settings.dagmc = True
+
+        model.settings.export_to_xml()
+
+        # tally
+        tally = openmc.Tally()
+        tally.scores = ['total']
+        tally.filters = [openmc.CellFilter(1)]
+        model.tallies = [tally]
+
+        model.tallies.export_to_xml()
+
+def test_uwuw():
+    harness = UWUWTest('statepoint.5.h5')
+    harness.main()