@Test
public void shouldGenerateUniqueId() throws JSONException {
Child child = new Child(null, "rapidftr", null);
child = spy(child);
doReturn("xyz").when(child).createUniqueId();
child.generateUniqueId();
assertThat(child.getUniqueId(), equalTo("xyz"));
}
@Test
public void shouldNotOverwriteIdIfAlreadyPresent() throws JSONException {
Child child = new Child("id1", "owner1", null);
child.generateUniqueId();
assertThat(child.getUniqueId(), equalTo("id1"));
}