diff --git a/src/sum.py b/src/sum.py
index 5dda91d2..aaa982e4 100644
--- a/src/sum.py
+++ b/src/sum.py
@@ -1,2 +1,6 @@
 def sum(a: int, b: int) -> int:
     return a + b
+
+
+if __name__ == "__main__":  # pragma: no cover
+    print(sum(3, 5))