diff --git a/coding_test/leetcode/sum_of_all_subset_xor_totals/__init__.py b/coding_test/leetcode/sum_of_all_subset_xor_totals/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/coding_test/leetcode/sum_of_all_subset_xor_totals/test.py b/coding_test/leetcode/sum_of_all_subset_xor_totals/test.py
new file mode 100644
index 0000000..07051ef
--- /dev/null
+++ b/coding_test/leetcode/sum_of_all_subset_xor_totals/test.py
@@ -0,0 +1,16 @@
+import functools
+import operator
+from itertools import combinations
+from typing import List
+
+
+class Solution:
+    def subsetXORSum(self, nums: List[int]) -> int:
+        return sum(functools.reduce(operator.xor, c) for i in range(1, len(nums) + 1) for c in combinations(nums, i))
+
+
+def test_subsetXORSum():
+    s = Solution()
+    assert s.subsetXORSum([1, 3]) == 6
+    assert s.subsetXORSum([5, 1, 6]) == 28
+    assert s.subsetXORSum([3, 4, 5, 6, 7, 8]) == 480