@Test
public void testAntichain() {

    Context antichain = Context.antichain(ABC);
    
    assertEquals(antichain.getObjects(), ABC);
    assertEquals(antichain.getAttributes(), ABC);
    assertTrue(antichain.getRelation() instanceof Equal);
    
    ConceptLattice lattice = antichain.asConceptLattice(new TinkerGraph());
    
    assertEquals(lattice.size(), 5);
    assertEquals(lattice.top(), new Concept(bits(), bits(0, 1, 2)));
    assertEquals(lattice.bottom(), new Concept(bits(0, 1, 2), bits()));
}