From c73a4d2e158214477f1100751bcfef0da5ae6089 Mon Sep 17 00:00:00 2001
From: Paul Romano <paul.k.romano@gmail.com>
Date: Fri, 20 May 2022 13:01:09 -0500
Subject: [PATCH] Make sure track file unit test uses reproducible
 cell/material IDs

---
 tests/unit_tests/test_tracks.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/unit_tests/test_tracks.py b/tests/unit_tests/test_tracks.py
index b82ea8459..11febea26 100644
--- a/tests/unit_tests/test_tracks.py
+++ b/tests/unit_tests/test_tracks.py
@@ -9,6 +9,7 @@ from tests.testing_harness import config
 
 @pytest.fixture
 def sphere_model():
+    openmc.reset_auto_ids()
     mat = openmc.Material()
     mat.add_nuclide('Zr90', 1.0)
     mat.set_density('g/cm3', 1.0)