pythongh-94808: Cover PyObject_PyBytes case with custom __bytes__ method (pythonGH-96610)

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com> (cherry picked from commit e39ae6b) Co-authored-by: Nikita Sobolev <mail@sobolevn.me>

Author: sobolevn

Lib/test/test_long.py

@@ -1518,6 +1518,22 @@ def __init__(self, value):
  self.assertEqual(i, 1)
  self.assertEqual(getattr(i, 'foo', 'none'), 'bar')
 
+ class ValidBytes:
+ def __bytes__(self):
+ return b'\x01'
+ class InvalidBytes:
+ def __bytes__(self):
+ return 'abc'
+ class MissingBytes: ...
+ class RaisingBytes:
+ def __bytes__(self):
+ 1 / 0
+
+ self.assertEqual(int.from_bytes(ValidBytes()), 1)
+ self.assertRaises(TypeError, int.from_bytes, InvalidBytes())
+ self.assertRaises(TypeError, int.from_bytes, MissingBytes())
+ self.assertRaises(ZeroDivisionError, int.from_bytes, RaisingBytes())
+
  @support.cpython_only
  def test_from_bytes_small(self):
  # bpo-46361