JsonFormat.Shape.NUMBER_INT does not work when defined on enum type in 2.8

[panchenko]

Before 2.8 the following worked for years. Now this annotation is not applied and enum is serialized as string. It would work if annotating the field. I am not sure if this is an expected change or not, could you please check?

public class Test {
    @JsonFormat(shape = JsonFormat.Shape.NUMBER_INT)
    enum Color {
        RED,
        YELLOW,
        GREEN
    }

    static class Foo {
        public final Color color;

        Foo(Color color) {
            this.color = color;
        }
    }

    public static void main(String[] args) throws JsonProcessingException {
        final ObjectMapper mapper = new ObjectMapper();
        System.out.println(mapper.writeValueAsString(new Foo(Color.GREEN)));
    }
}

[cowtowncoder]

@panchenko Good question. If this did work until 2.7 (which I think is what you are saying), I think it should still work. Things do get bit complicated with 2.8 and later due to all the levels at which configuration works (esp. regarding new "config overrides", see `ObjectMapper.configOverrides()).
But I think annotation-based per-type overrides have their place so I hope this can be fixed.

[panchenko]

@cowtowncoder Yes, I mean it worked in versions [2.1.*, 2.7.*]

[cowtowncoder]

Yes, there was a subtle bug in there which lead to class annotation's effects be (accidentally) overwritten by default config overrides. Thank you for reporting this; fix will be in 2.8.8.