public static final String AS_Q = "q";

    /** The parameter for filetype. */
    public static final String AS_FILETYPE = "filetype";

    /** The parameter for sitesearch. */
    public static final String AS_SITESEARCH = "sitesearch";

    /** The parameter for occurrence. */
    public static final String AS_OCCURRENCE = "occt";

    /** The parameter for timestamp. */

        assertEquals("filetype:\"pdf\" filetype:\"doc\"", getAsQuery(Collections.singletonMap(k, new String[] { "pdf", "doc" })));
    }

    public void test_conditions_sitesearch() {
        final String k = "sitesearch";
        assertEquals("", getAsQuery(Collections.singletonMap(k, new String[] { "" })));
        assertEquals("site:example.com", getAsQuery(Collections.singletonMap(k, new String[] { "example.com" })));