Include.NON_EMPTY default and afterburner serialization test

IncludeNonEmptySerializationTest

import static org.junit.Assert.assertEquals;

import org.junit.Test;

import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.module.afterburner.AfterburnerModule;

public class PrimitiveTest {
    @JsonInclude(JsonInclude.Include.NON_EMPTY)
    public static class NonEmptyIntWrapper {
        private int value;

        public NonEmptyIntWrapper(int v) {
            value = v;
        }

        public int getValue() {
            return value;
        }
    }

    // [Issue#39]
    @Test
    public void testEmptyExclusion() throws Exception {
        ObjectMapper mapper = mapperWithModule();
        String json;

        json = mapper.writeValueAsString(new NonEmptyIntWrapper(3));
        assertEquals("{\"value\":3}", json);
        json = mapper.writeValueAsString(new NonEmptyIntWrapper(0));
        assertEquals("{}", json);
        
        mapper = new ObjectMapper();
        json = mapper.writeValueAsString(new NonEmptyIntWrapper(3));
        assertEquals("{\"value\":3}", json);
        json = mapper.writeValueAsString(new NonEmptyIntWrapper(0));
        assertEquals("{}", json);
    }

    private ObjectMapper mapperWithModule() {
        return new ObjectMapper().registerModule(new AfterburnerModule());
    }

}

Returns org.junit.ComparisonFailure: expected:<{[]}> but was:<{["value":0]}> for the non-afterburner version.