assertEquals("\"aaa bbb\"", getAsQuery("111", Collections.singletonMap(k, new String[] { "aaa bbb" })));
    }

    @Test
    public void test_conditions_oq() {
        final String k = "oq";
        assertEquals("", getAsQuery(Collections.singletonMap(k, new String[] { "" })));
        assertEquals("aaa", getAsQuery(Collections.singletonMap(k, new String[] { "aaa" })));

    /** Query parameter name for constraint query. */
    public static final String OPTION_QUERY_CQ = "cq";

    /** Query parameter name for optional query. */
    public static final String OPTION_QUERY_OQ = "oq";

    /** Query parameter name for negative query. */
    public static final String OPTION_QUERY_NQ = "nq";

    // ============================================================
    // Job and Process Constants