/*
* Copyright 2002-2016 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.mock.web;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.Servlet;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import org.junit.Before;
import org.junit.Test;
import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;
import static org.mockito.BDDMockito.*;
/**
* Test fixture for {@link MockFilterChain}.
*
* @author Rob Winch
*/
public class MockFilterChainTests {
private ServletRequest request;
private ServletResponse response;
@Before
public void setup() {
this.request = new MockHttpServletRequest();
this.response = new MockHttpServletResponse();
}
@Test(expected = IllegalArgumentException.class)
public void constructorNullServlet() {
new MockFilterChain((Servlet) null);
}
@Test(expected = IllegalArgumentException.class)
public void constructorNullFilter() {
new MockFilterChain(mock(Servlet.class), (Filter) null);
}
@Test(expected = IllegalArgumentException.class)
public void doFilterNullRequest() throws Exception {
MockFilterChain chain = new MockFilterChain();
chain.doFilter(null, this.response);
}
@Test(expected = IllegalArgumentException.class)
public void doFilterNullResponse() throws Exception {
MockFilterChain chain = new MockFilterChain();
chain.doFilter(this.request, null);
}
@Test
public void doFilterEmptyChain() throws Exception {
MockFilterChain chain = new MockFilterChain();
chain.doFilter(this.request, this.response);
assertThat(chain.getRequest(), is(request));
assertThat(chain.getResponse(), is(response));
try {
chain.doFilter(this.request, this.response);
fail("Expected Exception");
}
catch (IllegalStateException ex) {
assertEquals("This FilterChain has already been called!", ex.getMessage());
}
}
@Test
public void doFilterWithServlet() throws Exception {
Servlet servlet = mock(Servlet.class);
MockFilterChain chain = new MockFilterChain(servlet);
chain.doFilter(this.request, this.response);
verify(servlet).service(this.request, this.response);
try {
chain.doFilter(this.request, this.response);
fail("Expected Exception");
}
catch (IllegalStateException ex) {
assertEquals("This FilterChain has already been called!", ex.getMessage());
}
}
@Test
public void doFilterWithServletAndFilters() throws Exception {
Servlet servlet = mock(Servlet.class);
MockFilter filter2 = new MockFilter(servlet);
MockFilter filter1 = new MockFilter(null);
MockFilterChain chain = new MockFilterChain(servlet, filter1, filter2);
chain.doFilter(this.request, this.response);
assertTrue(filter1.invoked);
assertTrue(filter2.invoked);
verify(servlet).service(this.request, this.response);
try {
chain.doFilter(this.request, this.response);
fail("Expected Exception");
}
catch (IllegalStateException ex) {
assertEquals("This FilterChain has already been called!", ex.getMessage());
}
}
private static class MockFilter implements Filter {
private final Servlet servlet;
private boolean invoked;
public MockFilter(Servlet servlet) {
this.servlet = servlet;
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
this.invoked = true;
if (this.servlet != null) {
this.servlet.service(request, response);
}
else {
chain.doFilter(request, response);
}
}
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void destroy() {
}
}
}