@Test
public void testNegativeStartup() throws ServletException {

    try {
        PDPRestInitializer init = new PDPRestInitializer();
        ServletContext container = Mockito.mock(ServletContext.class);
        init.onStartup(container);
        fail("Expecting an exception.");
    } catch (Exception ex) {
        // Expecting an exception
        assertTrue(true);
    }
}