@Test
public void check_an_update_override_everything() throws Exception {

    Map<String, String> patch = new HashMap<String, String>() {{
        put("d", "4");
    }};

    PatchUtil.setMap(testObject.getMap(), patch, false);

    assertThat(testObject.getMap()).hasSize(1);
    assertThat(testObject.getMap()).containsEntry("d", "4");
}