@Test
public void testAddOffering() {

    Fongo fongo = new Fongo("Mongo DB");
    Discoverer d = new Discoverer(fongo.getMongo());
    String ofId = "EC2";
    d.addOffering(new Offering(ofId));
    Offering of = d.fetchOffer(ofId);
    Assert.assertNotNull(of);
    Assert.assertEquals(of.getName(), ofId);
}