/*
 * Copyright ${YEAR} the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.web.filter;

import java.io.IOException;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

import static org.junit.Assert.assertEquals;
import org.junit.Before;
import org.junit.Test;

import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.mock.web.MockHttpServletResponse;

/** @author Arjen Poutsma */
public class HiddenHttpMethodFilterTest {

	private HiddenHttpMethodFilter filter;

	@Before
	public void createFilter() {
		filter = new HiddenHttpMethodFilter();
	}

	@Test
	public void filterWithParameter() throws IOException, ServletException {
		MockHttpServletRequest request = new MockHttpServletRequest("POST", "/hotels");
		request.addParameter("_method", "delete");
		MockHttpServletResponse response = new MockHttpServletResponse();

		FilterChain filterChain = new FilterChain() {

			public void doFilter(ServletRequest filterRequest, ServletResponse filterResponse)
					throws IOException, ServletException {
				assertEquals("Invalid method", "DELETE", ((HttpServletRequest) filterRequest).getMethod());
			}
		};
		filter.doFilter(request, response, filterChain);
	}

	@Test
	public void filterWithNoParameter() throws IOException, ServletException {
		MockHttpServletRequest request = new MockHttpServletRequest("POST", "/hotels");
		MockHttpServletResponse response = new MockHttpServletResponse();

		FilterChain filterChain = new FilterChain() {

			public void doFilter(ServletRequest filterRequest, ServletResponse filterResponse)
					throws IOException, ServletException {
				assertEquals("Invalid method", "POST", ((HttpServletRequest) filterRequest).getMethod());
			}
		};
		filter.doFilter(request, response, filterChain);
	}
}