modes: []cbor.DecMode{modes.Decode},
			in:    hex("a1614101"), // {"A": 1}
			into: struct {
				A int `json:"a"`
			}{},
			assertOnError: assertIdenticalError(&cbor.UnknownFieldError{Index: 0}),
		},
		{
			name:  "case-insensitive match ignored in lax mode",
			modes: []cbor.DecMode{modes.DecodeLax},
			in:    hex("a1614101"), // {"A": 1}
			into: struct {
				A int `json:"a"`
			}{},