Add a slice test with high < low.

diff --git a/Lib/test/test_array.py b/Lib/test/test_array.py
index c24b41b931a825971a0435388e479458831795aa..078d727143ca2af138680e4e7a8018ddc189982e 100755 (executable)
--- a/Lib/test/test_array.py
+++ b/Lib/test/test_array.py
@@ -427,6 +427,11 @@ class BaseTest(unittest.TestCase):
             array.array(self.typecode)
         )
 
+        self.assertEqual(
+            a[2:1],
+            array.array(self.typecode)
+        )
+
         self.assertEqual(
             a[1000:],
             array.array(self.typecode)