/*
* Copyright 2013-2015 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.cloud.netflix.zuul.filters.post;
import java.io.ByteArrayInputStream;
import java.io.Closeable;
import java.io.IOException;
import java.lang.reflect.UndeclaredThrowableException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.mock.web.MockHttpServletResponse;
import org.springframework.web.util.WebUtils;
import com.netflix.config.ConfigurationManager;
import com.netflix.zuul.constants.ZuulConstants;
import com.netflix.zuul.context.Debug;
import com.netflix.zuul.context.RequestContext;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.Matchers.equalTo;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.mockito.Matchers.anyInt;
import static org.mockito.Matchers.isA;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import static org.springframework.cloud.netflix.zuul.filters.support.FilterConstants.X_ZUUL_DEBUG_HEADER;
/**
* @author Spencer Gibb
*/
public class SendResponseFilterTests {
@Before
public void setTestRequestcontext() {
RequestContext context = new RequestContext();
RequestContext.testSetCurrentContext(context);
}
@After
public void reset() {
RequestContext.getCurrentContext().clear();
}
@Test
public void runsNormally() throws Exception {
String characterEncoding = null;
String content = "hello";
runFilter(characterEncoding, content, false);
}
@Test
public void characterEncodingNotOverridden() throws Exception {
String characterEncoding = "UTF-16";
String content = "\u00a5";
runFilter(characterEncoding, content, true);
}
@Test
public void runWithDebugHeader() throws Exception {
ConfigurationManager.getConfigInstance().setProperty(ZuulConstants.ZUUL_INCLUDE_DEBUG_HEADER, true);
SendResponseFilter filter = createFilter("hello", null, new MockHttpServletResponse(), false);
Debug.addRoutingDebug("test");
filter.run();
String debugHeader = RequestContext.getCurrentContext().getResponse()
.getHeader(X_ZUUL_DEBUG_HEADER);
assertThat("wrong debug header", debugHeader, equalTo("[[[test]]]"));
}
@Test
public void runWithOriginContentLength() throws Exception {
ConfigurationManager.getConfigInstance().setProperty(ZuulConstants.ZUUL_SET_CONTENT_LENGTH, true);
SendResponseFilter filter = createFilter("hello", null, new MockHttpServletResponse(), false);
RequestContext.getCurrentContext().setOriginContentLength(6L); // for test
RequestContext.getCurrentContext().setResponseGZipped(false);
filter.run();
String contentLength = RequestContext.getCurrentContext().getResponse()
.getHeader("Content-Length");
assertThat("wrong origin content length", contentLength, equalTo("6"));
}
@Test
public void closeResponseOutpusStreamError() throws Exception {
HttpServletResponse response = mock(HttpServletResponse.class);
RequestContext context = new RequestContext();
context.setRequest(new MockHttpServletRequest());
context.setResponse(response);
context.setResponseDataStream(new ByteArrayInputStream("Hello\n".getBytes("UTF-8")));
Closeable zuulResponse = mock(Closeable.class);
context.set("zuulResponse", zuulResponse);
RequestContext.testSetCurrentContext(context);
SendResponseFilter filter = new SendResponseFilter();
ServletOutputStream zuuloutputstream = mock(ServletOutputStream.class);
doThrow(new IOException("Response to client closed")).when(zuuloutputstream).write(isA(byte[].class), anyInt(), anyInt());
when(response.getOutputStream()).thenReturn(zuuloutputstream);
try {
filter.run();
} catch (UndeclaredThrowableException ex) {
assertThat(ex.getUndeclaredThrowable().getMessage(), is("Response to client closed"));
}
verify(zuulResponse).close();
}
private void runFilter(String characterEncoding, String content, boolean streamContent) throws Exception {
MockHttpServletResponse response = new MockHttpServletResponse();
SendResponseFilter filter = createFilter(content, characterEncoding, response, streamContent);
assertTrue("shouldFilter returned false", filter.shouldFilter());
filter.run();
String encoding = RequestContext.getCurrentContext().getResponse().getCharacterEncoding();
String expectedEncoding = characterEncoding != null ? characterEncoding : WebUtils.DEFAULT_CHARACTER_ENCODING;
assertThat("wrong character encoding", encoding, equalTo(expectedEncoding));
assertThat("wrong content", response.getContentAsString(), equalTo(content));
}
private SendResponseFilter createFilter(String content, String characterEncoding, MockHttpServletResponse response, boolean streamContent) throws Exception {
HttpServletRequest request = new MockHttpServletRequest();
RequestContext context = new RequestContext();
context.setRequest(request);
context.setResponse(response);
if (characterEncoding != null) {
response.setCharacterEncoding(characterEncoding);
}
if (streamContent) {
context.setResponseDataStream(new ByteArrayInputStream(content.getBytes(characterEncoding)));
} else {
context.setResponseBody(content);
}
context.addZuulResponseHeader(HttpHeaders.CONTENT_LENGTH, String.valueOf(content.length()));
context.set("error.status_code", HttpStatus.NOT_FOUND.value());
RequestContext.testSetCurrentContext(context);
SendResponseFilter filter = new SendResponseFilter();
return filter;
}
}