@Test
public void updateCStarToCB() {

    int[] cycle = new int[]{2, 4, 3, 1, 0, 5, 2};
    String[] symbs = new String[10];
    Arrays.fill(symbs, "");
    symbs[cycle[1]] = "C=C";
    symbs[cycle[2]] = "C=N";
    MmffAromaticTypeMapping.updateAromaticTypesInSixMemberRing(cycle, symbs);
    assertThat(symbs[cycle[1]], is("CB"));
    assertThat(symbs[cycle[2]], is("CB"));
}