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Co-authored-by: Shamil <[email protected]>

Author: cmaloney

Lib/test/test_io/test_general.py

@@ -604,10 +604,9 @@ def readinto(self, b):
         with self.assertRaises(ValueError) as cm:
             Misbehaved(2).read(1)
         self.assertEqual(str(cm.exception), "readinto returned '2' oustside buffer size '1'")
-        self.assertRaises(ValueError, Misbehaved(2147483647).read)
-        self.assertRaises(ValueError, Misbehaved(sys.maxsize).read)
-        self.assertRaises(ValueError, Misbehaved(-1).read)
-        self.assertRaises(ValueError, Misbehaved(-1000).read)
+        for bad_size in (2147483647, sys.maxsize, -1, -1000):
+          with self.assertRaises(ValueError):
+              Misbehaved(bad_size).read()
 
     def test_types_have_dict(self):
         test = (