Trying out JsonProperty to customize enum serialized value

SerializeEnumTest.java

package testing;

import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.junit.jupiter.api.Test;

import static org.assertj.core.api.Assertions.assertThat;

class SerializeEnumTest {
    public enum Type {
        @JsonProperty("internal")
        INTERNAL,
        @JsonProperty("external")
        EXTERNAL
    }

    @Test
    void usesJsonProperty() throws JsonProcessingException {
        final String result = new ObjectMapper().writeValueAsString(Type.INTERNAL);

        assertThat(result).isEqualTo("\"internal\"");
    }
}