code: @Test public void should_init_default_object_factory_mapper() throws Exception {
    ObjectMapperFactory actual=extractor.initObjectMapperFactory(configMap);
    assertThat(actual).isNotNull();
    ObjectMapper mapper=actual.getMapper(Integer.class);
    assertThat(mapper).isNotNull();
    assertThat(mapper.getSerializationConfig().getSerializationInclusion()).isEqualTo(JsonInclude.Include.NON_NULL);
    assertThat(mapper.getDeserializationConfig().isEnabled(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)).isFalse();
    Collection<AnnotationIntrospector> ais=mapper.getSerializationConfig().getAnnotationIntrospector().allIntrospectors();
    assertThat(ais).hasSize(2);
    Iterator<AnnotationIntrospector> iterator=ais.iterator();
    assertThat(iterator.next()).isInstanceOfAny(JacksonAnnotationIntrospector.class,JaxbAnnotationIntrospector.class);
    assertThat(iterator.next()).isInstanceOfAny(JacksonAnnotationIntrospector.class,JaxbAnnotationIntrospector.class);
  }
  