diff --git a/GildedRoseTest.test_foo.approved.txt b/GildedRoseTest.test_foo.approved.txt
index 30e78d41..86c49f66 100644
--- a/GildedRoseTest.test_foo.approved.txt
+++ b/GildedRoseTest.test_foo.approved.txt
@@ -1,3 +1,9 @@
+args: ('foo', -1) => 'foo, -1, -1'
 args: ('foo', 0) => 'foo, -1, 0'
+args: ('foo', 1) => 'foo, -1, 0'
+args: ('Aged Brie', -1) => 'Aged Brie, -1, 1'
 args: ('Aged Brie', 0) => 'Aged Brie, -1, 2'
+args: ('Aged Brie', 1) => 'Aged Brie, -1, 3'
+args: ('Backstage passes to a TAFKAL80ETC concert', -1) => 'Backstage passes to a TAFKAL80ETC concert, -1, 0'
 args: ('Backstage passes to a TAFKAL80ETC concert', 0) => 'Backstage passes to a TAFKAL80ETC concert, -1, 0'
+args: ('Backstage passes to a TAFKAL80ETC concert', 1) => 'Backstage passes to a TAFKAL80ETC concert, -1, 0'
diff --git a/test_gilded_rose.py b/test_gilded_rose.py
index b5914d1f..b4577e59 100644
--- a/test_gilded_rose.py
+++ b/test_gilded_rose.py
@@ -18,7 +18,7 @@ class GildedRoseTest(unittest.TestCase):
             "Backstage passes to a TAFKAL80ETC concert",
         ]
 
-        verify_all_combinations(self.do_stuff, [input_names, [0]])
+        verify_all_combinations(self.do_stuff, [input_names, [-1, 0, 1]])
 
 
 if __name__ == "__main__":