public void AromaticBondTypesEnabled() { IAtomContainer mol = builder.NewAtomContainer(); mol.Atoms.Add(builder.NewAtom("C")); mol.Atoms.Add(builder.NewAtom("C")); IBond bond = builder.NewBond(mol.Atoms[0], mol.Atoms[1], BondOrder.Unset); bond.IsAromatic = true; mol.Bonds.Add(bond); StringWriter sw = new StringWriter(); using (MDLV2000Writer mdlw = new MDLV2000Writer(sw)) { mdlw.SetWriteAromaticBondTypes(true); mdlw.Write(mol); } Assert.IsTrue(sw.ToString().Contains(" 1 2 4 0 0 0 0 \n")); }