BUGFIX: 3-arg subtraction was not implemented.

The following change allows use of sub like ```py sub(5, 4, 1) #0 ```
gh-training · Oct 7, 2022 · 6ebb999 · 6ebb999 · prdriscoll · Oct 7, 2022
1 parent 0e54bd7
commit 6ebb999
Showing 1 changed file with 2 additions and 0 deletions.
diff --git 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()