diff --git a/test/units/inventory/test_inventory.py b/test/units/inventory/test_inventory.py
index 3869e15b587..e397143390b 100644
--- a/test/units/inventory/test_inventory.py
+++ b/test/units/inventory/test_inventory.py
@@ -44,6 +44,14 @@ class TestInventory(unittest.TestCase):
         ' a : b ': ['a', 'b'],
         'foo:bar:baz[1:2]': ['foo', 'bar', 'baz[1:2]'],
     }
+    pattern_lists = [
+        [['a'], ['a']],
+        [['a', 'b'], ['a', 'b']],
+        [['a, b'], ['a', 'b']],
+        [['9a01:7f8:191:7701::9', '9a01:7f8:191:7701::9,foo'],
+         ['9a01:7f8:191:7701::9', '9a01:7f8:191:7701::9','foo']]
+    ]
+
 
     def setUp(self):
         v = VariableManager()
@@ -56,3 +64,6 @@ class TestInventory(unittest.TestCase):
         for p in self.patterns:
             r = self.patterns[p]
             self.assertEqual(r, self.i._split_pattern(p))
+
+        for p, r in self.pattern_lists:
+            self.assertEqual(r, self.i._split_pattern(p))