Unskip test_truncated_input

Author: fanninpm

Lib/test/test_json/test_fail.py

@@ -105,7 +105,6 @@ def test_not_serializable(self):
                 'Object of type module is not JSON serializable'):
             self.dumps(sys)
 
-    @unittest.skip("TODO: RUSTPYTHON")
     def test_truncated_input(self):
         test_cases = [
             ('', 'Expecting value', 0),