String[] result = SearchRequestParams.simplifyArray(input);
        assertEquals(0, result.length);
    }

    // Test for getParamValueArray static method
    @Test
    public void test_getParamValueArray() {
        MockHttpServletRequest request = new MockHttpServletRequest();
        request.setParameterValues("test", new String[] { "value1", "value2", "value1" });