@Test
public void shouldReturnErrorWhenSettingsIsNull() {

    CassandraConfiguration cassandraConfiguration = new CassandraConfiguration();
    assertThrows(NullPointerException.class, () -> {
        cassandraConfiguration.get(null);
    });
    assertThrows(NullPointerException.class, () -> {
        cassandraConfiguration.get(null);
    });
}