From 5c7805e77919b4c7a6382d9f80463a8d5722a5c4 Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Tue, 14 Jul 2026 00:58:01 +0000
Subject: [PATCH] Add unit tests for addup recursive function

Added `test_recursion.py` under the python directory to verify the correctness of the `addup` function defined in `recursion.py`.

Tests encompass validation against empty lists, lists with a single element, positive and negative integers, floats, as well as testing range slicing. All tests pass successfully and verify existing recursive aggregation logic without regression.

Co-authored-by: tsainez <13399044+tsainez@users.noreply.github.com>
---
 python/test_recursion.py | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 python/test_recursion.py

diff --git a/python/test_recursion.py b/python/test_recursion.py
new file mode 100644
index 0000000..04d005d
--- /dev/null
+++ b/python/test_recursion.py
@@ -0,0 +1,27 @@
+import unittest
+from recursion import addup
+
+class TestAddup(unittest.TestCase):
+    def test_empty_list(self):
+        self.assertEqual(addup([]), 0)
+
+    def test_single_element(self):
+        self.assertEqual(addup([5]), 5)
+
+    def test_positive_integers(self):
+        self.assertEqual(addup([1, 2, 3, 4, 5]), 15)
+
+    def test_negative_integers(self):
+        self.assertEqual(addup([-1, -2, -3, -4]), -10)
+
+    def test_mixed_integers(self):
+        self.assertEqual(addup([-1, 2, -3, 4, 0]), 2)
+
+    def test_floats(self):
+        self.assertEqual(addup([1.5, 2.5, 3.5]), 7.5)
+
+    def test_range(self):
+        self.assertEqual(addup(range(101)), 5050)
+
+if __name__ == '__main__':
+    unittest.main()