Benchmark and unit test for PDF creation

1 files changed, 53 insertions, 0 deletions

diff --git a/tests/test_pdf.py b/tests/test_pdf.py
new file mode 100644
index 0000000..9a08b53
--- /dev/null
+++ b/tests/test_pdf.py
@@ -0,0 +1,53 @@
+import unittest
+import numpy as np
+
+import chroma.detectors
+from chroma.generator.photon import G4ParallelGenerator
+from chroma.generator.vertex import constant_particle_gun
+from chroma.optics import water_wcsim
+from chroma.gpu import GPU
+from chroma.sim import Simulation
+
+class TestPDF(unittest.TestCase):
+    def setUp(self):
+        self.detector = chroma.detectors.find("microlbne")
+        self.detector.build()
+        self.vertex_gen = constant_particle_gun('e-', (0,0,0), (1,0,0), 10)
+
+    def testGPUPDF(self):
+        '''Create a hit count and (q,t) PDF for 10 MeV events in MicroLBNE'''
+
+        g4generator = G4ParallelGenerator(1, water_wcsim)
+        gpu = GPU(0)
+        gpu.load_geometry(self.detector)
+        gpu.setup_propagate()
+        gpu.setup_daq(max(self.detector.pmtids))
+        gpu.setup_pdf(max(self.detector.pmtids), 100, (-0.5, 999.5), 10, (-0.5, 9.5))
+        
+        gpu.clear_pdf()
+
+        for ev in g4generator.generate_events(10, self.vertex_gen):
+            gpu.load_photons(ev.photon_start)
+            gpu.propagate()
+            gpu.run_daq()
+            gpu.add_hits_to_pdf()
+
+        hitcount, pdf = gpu.get_pdfs()
+        self.assertTrue( (hitcount > 0).any() )
+        self.assertTrue( (pdf > 0).any() )
+
+        # Consistency checks
+        for i, nhits in enumerate(hitcount):
+            self.assertEqual(nhits, pdf[i].sum())
+
+    def testSimPDF(self):
+        sim = Simulation(self.detector, water_wcsim)
+        hitcount, pdf = sim.create_pdf(100, self.vertex_gen,
+                                        100, (-0.5, 999.5), 10, (-0.5, 9.5))
+
+        self.assertTrue( (hitcount > 0).any() )
+        self.assertTrue( (pdf > 0).any() )
+
+        # Consistency checks
+        for i, nhits in enumerate(hitcount):
+            self.assertEqual(nhits, pdf[i].sum())