@Test public void aromaticBondTypesEnabled() throws Exception { IAtomContainer mol = builder.newInstance(IAtomContainer.class); mol.addAtom(builder.newInstance(IAtom.class, "C")); mol.addAtom(builder.newInstance(IAtom.class, "C")); IBond bond = builder.newInstance(IBond.class, mol.getAtom(0), mol.getAtom(1), Order.UNSET); bond.setIsAromatic(true); mol.addBond(bond); StringWriter sw = new StringWriter(); try (MDLV2000Writer mdlw = new MDLV2000Writer(sw)) { mdlw.setWriteAromaticBondTypes(true); mdlw.write(mol); } assertThat(sw.toString(), containsString(" 1 2 4 0 0 0 0 \n")); }