@Test
public void neighboursInBlockForMultipleBonds() {

    String acpString = "C0C1C2C3C4 0:1(1),0:2(2),0:3(1),1:4(1),2:4(1),3:4(2)";
    IAtomContainer ac = AtomContainerPrinter.fromString(acpString, builder);
    AtomRefinable refinable = new AtomRefinable(ac);
    
    Invariant invariant = refinable.neighboursInBlock(set(1, 2), 0);
    assertTrue(invariant instanceof IntegerListInvariant);
    assertEquals(new IntegerListInvariant(new int[] {1, 1}), invariant);
}