Add tests for empty range equality (#103751)

diff --git a/Lib/test/test_range.py b/Lib/test/test_range.py
index 3870b153688b25fcd324a7779339e54f41a04ea4..4a6431e10f184206cb7fdea23eb689165667498b 100644 (file)
--- a/Lib/test/test_range.py
+++ b/Lib/test/test_range.py
@@ -677,6 +677,11 @@ class RangeTest(unittest.TestCase):
                          hash(range(2**200, 2**201, 2**100)))
         self.assertNotEqual(range(2**200, 2**201, 2**100),
                             range(2**200, 2**201 + 1, 2**100))
+        # Empty ranges
+        self.assertEqual(range(32, 16), range(0))
+        self.assertEqual(hash(range(32, 16)), hash(range(0)))
+        self.assertEqual(range(2, 1, 3), range(0))
+        self.assertEqual(hash(range(2, 1, 3)), hash(range(0)))
 
         # Order comparisons are not implemented for ranges.
         with self.assertRaises(TypeError):