@Test
public void get3DCoordinateCoverage_EmptyAtomContainer() {

    IAtomContainer container = new AtomContainer();
    Assert.assertEquals(GeometryTools.CoordinateCoverage.NONE, GeometryTools.get3DCoordinateCoverage(container));
    Assert.assertEquals(GeometryTools.CoordinateCoverage.NONE,
            GeometryTools.get3DCoordinateCoverage((IAtomContainer) null));
}