@Test
public void testToString() {

    PharmacophoreQueryAtom qatom1 = new PharmacophoreQueryAtom("Amine", "[CX2]N");
    PharmacophoreQueryAtom qatom2 = new PharmacophoreQueryAtom("aromatic", "c1ccccc1");
    PharmacophoreQueryBond qbond1 = new PharmacophoreQueryBond(qatom1, qatom2, 1.0, 2.0);
    String repr = qbond1.toString();
    Assert.assertEquals(repr, "DC::Amine [[CX2]N]::aromatic [c1ccccc1]::[1.0 - 2.0] ");
}