/
MockFilterChainTests.java
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/
MockFilterChainTests.java
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/*
* Copyright 2002-2019 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
*
* https://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.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
import static org.assertj.core.api.Assertions.assertThatIllegalStateException;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
/**
* 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
public void constructorNullServlet() {
assertThatIllegalArgumentException().isThrownBy(() ->
new MockFilterChain((Servlet) null));
}
@Test
public void constructorNullFilter() {
assertThatIllegalArgumentException().isThrownBy(() ->
new MockFilterChain(mock(Servlet.class), (Filter) null));
}
@Test
public void doFilterNullRequest() throws Exception {
MockFilterChain chain = new MockFilterChain();
assertThatIllegalArgumentException().isThrownBy(() ->
chain.doFilter(null, this.response));
}
@Test
public void doFilterNullResponse() throws Exception {
MockFilterChain chain = new MockFilterChain();
assertThatIllegalArgumentException().isThrownBy(() ->
chain.doFilter(this.request, null));
}
@Test
public void doFilterEmptyChain() throws Exception {
MockFilterChain chain = new MockFilterChain();
chain.doFilter(this.request, this.response);
assertThat(chain.getRequest()).isEqualTo(request);
assertThat(chain.getResponse()).isEqualTo(response);
assertThatIllegalStateException().isThrownBy(() ->
chain.doFilter(this.request, this.response))
.withMessage("This FilterChain has already been called!");
}
@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);
assertThatIllegalStateException().isThrownBy(() ->
chain.doFilter(this.request, this.response))
.withMessage("This FilterChain has already been called!");
}
@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);
assertThat(filter1.invoked).isTrue();
assertThat(filter2.invoked).isTrue();
verify(servlet).service(this.request, this.response);
assertThatIllegalStateException().isThrownBy(() ->
chain.doFilter(this.request, this.response))
.withMessage("This FilterChain has already been called!");
}
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() {
}
}
}