From 7c4c2b6914e949e504518a2944bb84741ebd9e5f Mon Sep 17 00:00:00 2001
From: Jonathan Gross <jgross@linkedin.com>
Date: Thu, 30 Nov 2023 13:31:56 -0800
Subject: [PATCH] BUGFIX: 3-arg subtraction was not implemented

---
 src/calc_test.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/calc_test.py b/src/calc_test.py
index 2911910..e6638c8 100644
--- a/src/calc_test.py
+++ b/src/calc_test.py
@@ -17,6 +17,8 @@ def test_sub_2arg(self):
         # Make sure 4 - 3 = 1
         self.assertEqual(sub(4, 3), 1, 'subtracting three from four')
 
+    def test_sub_3arg(self):
+        self.assertEqual(sub(4, 3, 1), 0, 'subtracting three and one from four')
 
 if __name__ == '__main__':
     unittest.main()