@Test
public void unsuppressed() throws Exception {

    AtomSuppression suppression = AtomSuppression.unsuppressed();
    IAtomContainer container = mock(IAtomContainer.class);
    Suppressed suppressed = suppression.suppress(container);
    assertFalse(suppressed.contains(0));
    assertFalse(suppressed.contains(1));
    assertFalse(suppressed.contains(2));
    assertFalse(suppressed.contains(3));
    assertFalse(suppressed.contains(4));
}