@Test
public void searchField() throws Exception {

	MockHttpServletRequest request = new MockHttpServletRequest();
	request.setParameter("search_field", "title, contents");
	
	RequestBuilder<SearchRequest> builder = new RequestBuilder<SearchRequest>();
	SearchRequest searchRequest = builder.mappingRequestParam(request, SearchRequest.class);
	
	Assert.assertEquals("title, contents", searchRequest.getSearchField());
}