assertThat(set.contains(TestCase.class.getName()), is(not(true)));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testFromRootPackage_JarFile() throws Exception {
        final Traverser[] traversers = TraversalUtil.getTraversers("junit.textui");
        assertThat(traversers, is(notNullValue()));
        assertThat(traversers.length, is(1));