facetQueryView.addQuery("key1", null);
        assertNull(facetQueryView.getQueryMap().get("key1"));
    }

    @Test
    public void test_init_multipleCallsShouldNotDuplicate() {
        testFileTypeHelper.setTypes(new String[] { "pdf" });
        facetQueryView.addQuery("label1", "filetype:html");

        facetQueryView.init();