code: native 'abc' json="abc"
code-invalid: native 'ABC' json="ABC"
price: native Decimal('9.5') json="9.5"
price-invalid: native Decimal('10.5') json="10.5"
counts: native {'a': 1, 'b': 2} json={"a":1,"b":2}
words: native {'ab': 1} json={"ab":1}
words-invalid: native {'AB': 1} json={"AB":1}
