diff --git a/conftest.py b/conftest.py
index 6d2037c7617..1afd0260209 100644
--- a/conftest.py
+++ b/conftest.py
@@ -1,12 +1,13 @@
 import contextlib
 import doctest
 import io
+import itertools
 import numpy as np
-import psyneulink
 import pytest
 import re
 import sys
 
+import psyneulink
 from psyneulink import clear_registry, primary_registries, torch_available
 from psyneulink.core import llvm as pnlvm
 from psyneulink.core.globals.utilities import set_global_seed
@@ -246,6 +247,13 @@ def expand_np_ndarray(arr):
             results_list.extend(nested_elem)
     return results_list
 
+@pytest.helpers.register
+def power_set(s):
+    """Set of all potential subsets."""
+
+    vals = list(s)
+    return (c for l in range(len(vals) + 1) for c in itertools.combinations(vals, l))
+
 
 # flag when run from pytest
 # https://docs.pytest.org/en/stable/example/simple.html#detect-if-running-from-within-a-pytest-run
diff --git a/tests/llvm/test_debug_composition.py b/tests/llvm/test_debug_composition.py
index c272801f2ec..c6b14d420a2 100644
--- a/tests/llvm/test_debug_composition.py
+++ b/tests/llvm/test_debug_composition.py
@@ -1,7 +1,6 @@
 import numpy as np
 import os
 import pytest
-from itertools import combinations
 
 from psyneulink.core import llvm as pnlvm
 from psyneulink.core.components.functions.nonstateful.transferfunctions import Linear
@@ -10,7 +9,7 @@
 from psyneulink.core.compositions.composition import Composition
 
 debug_options=["const_input=[[[7]]]", "const_input", "const_params", "const_data", "const_state", "stat", "time_stat", "unaligned_copy"]
-options_combinations = (";".join(("", *c)) for i in range(len(debug_options) + 1) for c in combinations(debug_options, i))
+options_combinations = (";".join(c) for c in pytest.helpers.power_set(debug_options))
 
 @pytest.mark.composition
 @pytest.mark.parametrize("mode", [pytest.param(pnlvm.ExecutionMode.LLVMRun, marks=pytest.mark.llvm),