/*
* Copyright 2002-2017 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.test;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Collections;
import java.util.Enumeration;
import java.util.EventListener;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Set;
import javax.servlet.Filter;
import javax.servlet.FilterRegistration;
import javax.servlet.RequestDispatcher;
import javax.servlet.Servlet;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration;
import javax.servlet.SessionCookieConfig;
import javax.servlet.SessionTrackingMode;
import javax.servlet.descriptor.JspConfigDescriptor;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.core.io.DefaultResourceLoader;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
import org.springframework.http.MediaType;
import org.springframework.http.MediaTypeFactory;
import org.springframework.util.Assert;
import org.springframework.util.ClassUtils;
import org.springframework.util.MimeType;
import org.springframework.util.ObjectUtils;
import org.springframework.util.StringUtils;
import org.springframework.web.util.WebUtils;
/**
* Mock implementation of the {@link javax.servlet.ServletContext} interface.
*
* <p>As of Spring 5.0, this set of mocks is designed on a Servlet 4.0 baseline.
*
* <p>Compatible with Servlet 3.1 but can be configured to expose a specific version
* through {@link #setMajorVersion}/{@link #setMinorVersion}; default is 3.1.
* Note that Servlet 3.1 support is limited: servlet, filter and listener
* registration methods are not supported; neither is JSP configuration.
* We generally do not recommend to unit test your ServletContainerInitializers and
* WebApplicationInitializers which is where those registration methods would be used.
*
* <p>For setting up a full {@code WebApplicationContext} in a test environment, you can
* use {@code AnnotationConfigWebApplicationContext}, {@code XmlWebApplicationContext},
* or {@code GenericWebApplicationContext}, passing in a corresponding
* {@code MockServletContext} instance. Consider configuring your
* {@code MockServletContext} with a {@code FileSystemResourceLoader} in order to
* interpret resource paths as relative filesystem locations.
*
* @author Rod Johnson
* @author Juergen Hoeller
* @author Sam Brannen
* @since 1.0.2
* @see #MockServletContext(org.springframework.core.io.ResourceLoader)
* @see org.springframework.web.context.support.AnnotationConfigWebApplicationContext
* @see org.springframework.web.context.support.XmlWebApplicationContext
* @see org.springframework.web.context.support.GenericWebApplicationContext
*/
public class MockServletContext implements ServletContext {
/** Default Servlet name used by Tomcat, Jetty, JBoss, and GlassFish: {@value} */
private static final String COMMON_DEFAULT_SERVLET_NAME = "default";
private static final String TEMP_DIR_SYSTEM_PROPERTY = "java.io.tmpdir";
private static final Set<SessionTrackingMode> DEFAULT_SESSION_TRACKING_MODES = new LinkedHashSet<>(4);
static {
DEFAULT_SESSION_TRACKING_MODES.add(SessionTrackingMode.COOKIE);
DEFAULT_SESSION_TRACKING_MODES.add(SessionTrackingMode.URL);
DEFAULT_SESSION_TRACKING_MODES.add(SessionTrackingMode.SSL);
}
private final Log logger = LogFactory.getLog(getClass());
private final ResourceLoader resourceLoader;
private final String resourceBasePath;
private String contextPath = "";
private final Map<String, ServletContext> contexts = new HashMap<>();
private int majorVersion = 3;
private int minorVersion = 1;
private int effectiveMajorVersion = 3;
private int effectiveMinorVersion = 1;
private final Map<String, RequestDispatcher> namedRequestDispatchers = new HashMap<>();
private String defaultServletName = COMMON_DEFAULT_SERVLET_NAME;
private final Map<String, String> initParameters = new LinkedHashMap<>();
private final Map<String, Object> attributes = new LinkedHashMap<>();
private String servletContextName = "MockServletContext";
private final Set<String> declaredRoles = new LinkedHashSet<>();
private Set<SessionTrackingMode> sessionTrackingModes;
private final SessionCookieConfig sessionCookieConfig = new MockSessionCookieConfig();
private int sessionTimeout;
private String requestCharacterEncoding;
private String responseCharacterEncoding;
private final Map<String, MediaType> mimeTypes = new LinkedHashMap<>();
/**
* Create a new {@code MockServletContext}, using no base path and a
* {@link DefaultResourceLoader} (i.e. the classpath root as WAR root).
* @see org.springframework.core.io.DefaultResourceLoader
*/
public MockServletContext() {
this("", null);
}
/**
* Create a new {@code MockServletContext}, using a {@link DefaultResourceLoader}.
* @param resourceBasePath the root directory of the WAR (should not end with a slash)
* @see org.springframework.core.io.DefaultResourceLoader
*/
public MockServletContext(String resourceBasePath) {
this(resourceBasePath, null);
}
/**
* Create a new {@code MockServletContext}, using the specified {@link ResourceLoader}
* and no base path.
* @param resourceLoader the ResourceLoader to use (or null for the default)
*/
public MockServletContext(ResourceLoader resourceLoader) {
this("", resourceLoader);
}
/**
* Create a new {@code MockServletContext} using the supplied resource base
* path and resource loader.
* <p>Registers a {@link MockRequestDispatcher} for the Servlet named
* {@literal 'default'}.
* @param resourceBasePath the root directory of the WAR (should not end with a slash)
* @param resourceLoader the ResourceLoader to use (or null for the default)
* @see #registerNamedDispatcher
*/
public MockServletContext(String resourceBasePath, ResourceLoader resourceLoader) {
this.resourceLoader = (resourceLoader != null ? resourceLoader : new DefaultResourceLoader());
this.resourceBasePath = (resourceBasePath != null ? resourceBasePath : "");
// Use JVM temp dir as ServletContext temp dir.
String tempDir = System.getProperty(TEMP_DIR_SYSTEM_PROPERTY);
if (tempDir != null) {
this.attributes.put(WebUtils.TEMP_DIR_CONTEXT_ATTRIBUTE, new File(tempDir));
}
registerNamedDispatcher(this.defaultServletName, new MockRequestDispatcher(this.defaultServletName));
}
/**
* Build a full resource location for the given path, prepending the resource
* base path of this {@code MockServletContext}.
* @param path the path as specified
* @return the full resource path
*/
protected String getResourceLocation(String path) {
if (!path.startsWith("/")) {
path = "/" + path;
}
return this.resourceBasePath + path;
}
public void setContextPath(String contextPath) {
this.contextPath = (contextPath != null ? contextPath : "");
}
@Override
public String getContextPath() {
return this.contextPath;
}
public void registerContext(String contextPath, ServletContext context) {
this.contexts.put(contextPath, context);
}
@Override
public ServletContext getContext(String contextPath) {
if (this.contextPath.equals(contextPath)) {
return this;
}
return this.contexts.get(contextPath);
}
public void setMajorVersion(int majorVersion) {
this.majorVersion = majorVersion;
}
@Override
public int getMajorVersion() {
return this.majorVersion;
}
public void setMinorVersion(int minorVersion) {
this.minorVersion = minorVersion;
}
@Override
public int getMinorVersion() {
return this.minorVersion;
}
public void setEffectiveMajorVersion(int effectiveMajorVersion) {
this.effectiveMajorVersion = effectiveMajorVersion;
}
@Override
public int getEffectiveMajorVersion() {
return this.effectiveMajorVersion;
}
public void setEffectiveMinorVersion(int effectiveMinorVersion) {
this.effectiveMinorVersion = effectiveMinorVersion;
}
@Override
public int getEffectiveMinorVersion() {
return this.effectiveMinorVersion;
}
@Override
public String getMimeType(String filePath) {
String extension = StringUtils.getFilenameExtension(filePath);
if (this.mimeTypes.containsKey(extension)) {
return this.mimeTypes.get(extension).toString();
}
else {
return MediaTypeFactory.getMediaType(filePath).
map(MimeType::toString)
.orElse(null);
}
}
/**
* Adds a mime type mapping for use by {@link #getMimeType(String)}.
* @param fileExtension a file extension, such as {@code txt}, {@code gif}
* @param mimeType the mime type
*/
public void addMimeType(String fileExtension, MediaType mimeType) {
Assert.notNull(fileExtension, "'fileExtension' must not be null");
this.mimeTypes.put(fileExtension, mimeType);
}
@Override
public Set<String> getResourcePaths(String path) {
String actualPath = (path.endsWith("/") ? path : path + "/");
Resource resource = this.resourceLoader.getResource(getResourceLocation(actualPath));
try {
File file = resource.getFile();
String[] fileList = file.list();
if (ObjectUtils.isEmpty(fileList)) {
return null;
}
Set<String> resourcePaths = new LinkedHashSet<>(fileList.length);
for (String fileEntry : fileList) {
String resultPath = actualPath + fileEntry;
if (resource.createRelative(fileEntry).getFile().isDirectory()) {
resultPath += "/";
}
resourcePaths.add(resultPath);
}
return resourcePaths;
}
catch (IOException ex) {
logger.warn("Couldn't get resource paths for " + resource, ex);
return null;
}
}
@Override
public URL getResource(String path) throws MalformedURLException {
Resource resource = this.resourceLoader.getResource(getResourceLocation(path));
if (!resource.exists()) {
return null;
}
try {
return resource.getURL();
}
catch (MalformedURLException ex) {
throw ex;
}
catch (IOException ex) {
logger.warn("Couldn't get URL for " + resource, ex);
return null;
}
}
@Override
public InputStream getResourceAsStream(String path) {
Resource resource = this.resourceLoader.getResource(getResourceLocation(path));
if (!resource.exists()) {
return null;
}
try {
return resource.getInputStream();
}
catch (IOException ex) {
logger.warn("Couldn't open InputStream for " + resource, ex);
return null;
}
}
@Override
public RequestDispatcher getRequestDispatcher(String path) {
Assert.isTrue(path.startsWith("/"),
() -> "RequestDispatcher path [" + path + "] at ServletContext level must start with '/'");
return new MockRequestDispatcher(path);
}
@Override
public RequestDispatcher getNamedDispatcher(String path) {
return this.namedRequestDispatchers.get(path);
}
/**
* Register a {@link RequestDispatcher} (typically a {@link MockRequestDispatcher})
* that acts as a wrapper for the named Servlet.
* @param name the name of the wrapped Servlet
* @param requestDispatcher the dispatcher that wraps the named Servlet
* @see #getNamedDispatcher
* @see #unregisterNamedDispatcher
*/
public void registerNamedDispatcher(String name, RequestDispatcher requestDispatcher) {
Assert.notNull(name, "RequestDispatcher name must not be null");
Assert.notNull(requestDispatcher, "RequestDispatcher must not be null");
this.namedRequestDispatchers.put(name, requestDispatcher);
}
/**
* Unregister the {@link RequestDispatcher} with the given name.
* @param name the name of the dispatcher to unregister
* @see #getNamedDispatcher
* @see #registerNamedDispatcher
*/
public void unregisterNamedDispatcher(String name) {
Assert.notNull(name, "RequestDispatcher name must not be null");
this.namedRequestDispatchers.remove(name);
}
/**
* Get the name of the <em>default</em> {@code Servlet}.
* <p>Defaults to {@literal 'default'}.
* @see #setDefaultServletName
*/
public String getDefaultServletName() {
return this.defaultServletName;
}
/**
* Set the name of the <em>default</em> {@code Servlet}.
* <p>Also {@link #unregisterNamedDispatcher unregisters} the current default
* {@link RequestDispatcher} and {@link #registerNamedDispatcher replaces}
* it with a {@link MockRequestDispatcher} for the provided
* {@code defaultServletName}.
* @param defaultServletName the name of the <em>default</em> {@code Servlet};
* never {@code null} or empty
* @see #getDefaultServletName
*/
public void setDefaultServletName(String defaultServletName) {
Assert.hasText(defaultServletName, "defaultServletName must not be null or empty");
unregisterNamedDispatcher(this.defaultServletName);
this.defaultServletName = defaultServletName;
registerNamedDispatcher(this.defaultServletName, new MockRequestDispatcher(this.defaultServletName));
}
@Override
@Deprecated
public Servlet getServlet(String name) {
return null;
}
@Override
@Deprecated
public Enumeration<Servlet> getServlets() {
return Collections.enumeration(Collections.emptySet());
}
@Override
@Deprecated
public Enumeration<String> getServletNames() {
return Collections.enumeration(Collections.emptySet());
}
@Override
public void log(String message) {
logger.info(message);
}
@Override
@Deprecated
public void log(Exception ex, String message) {
logger.info(message, ex);
}
@Override
public void log(String message, Throwable ex) {
logger.info(message, ex);
}
@Override
public String getRealPath(String path) {
Resource resource = this.resourceLoader.getResource(getResourceLocation(path));
try {
return resource.getFile().getAbsolutePath();
}
catch (IOException ex) {
logger.warn("Couldn't determine real path of resource " + resource, ex);
return null;
}
}
@Override
public String getServerInfo() {
return "MockServletContext";
}
@Override
public String getInitParameter(String name) {
Assert.notNull(name, "Parameter name must not be null");
return this.initParameters.get(name);
}
@Override
public Enumeration<String> getInitParameterNames() {
return Collections.enumeration(this.initParameters.keySet());
}
@Override
public boolean setInitParameter(String name, String value) {
Assert.notNull(name, "Parameter name must not be null");
if (this.initParameters.containsKey(name)) {
return false;
}
this.initParameters.put(name, value);
return true;
}
public void addInitParameter(String name, String value) {
Assert.notNull(name, "Parameter name must not be null");
this.initParameters.put(name, value);
}
@Override
public Object getAttribute(String name) {
Assert.notNull(name, "Attribute name must not be null");
return this.attributes.get(name);
}
@Override
public Enumeration<String> getAttributeNames() {
return Collections.enumeration(new LinkedHashSet<>(this.attributes.keySet()));
}
@Override
public void setAttribute(String name, Object value) {
Assert.notNull(name, "Attribute name must not be null");
if (value != null) {
this.attributes.put(name, value);
}
else {
this.attributes.remove(name);
}
}
@Override
public void removeAttribute(String name) {
Assert.notNull(name, "Attribute name must not be null");
this.attributes.remove(name);
}
public void setServletContextName(String servletContextName) {
this.servletContextName = servletContextName;
}
@Override
public String getServletContextName() {
return this.servletContextName;
}
@Override
public ClassLoader getClassLoader() {
return ClassUtils.getDefaultClassLoader();
}
@Override
public void declareRoles(String... roleNames) {
Assert.notNull(roleNames, "Role names array must not be null");
for (String roleName : roleNames) {
Assert.hasLength(roleName, "Role name must not be empty");
this.declaredRoles.add(roleName);
}
}
public Set<String> getDeclaredRoles() {
return Collections.unmodifiableSet(this.declaredRoles);
}
@Override
public void setSessionTrackingModes(Set<SessionTrackingMode> sessionTrackingModes)
throws IllegalStateException, IllegalArgumentException {
this.sessionTrackingModes = sessionTrackingModes;
}
@Override
public Set<SessionTrackingMode> getDefaultSessionTrackingModes() {
return DEFAULT_SESSION_TRACKING_MODES;
}
@Override
public Set<SessionTrackingMode> getEffectiveSessionTrackingModes() {
return (this.sessionTrackingModes != null ?
Collections.unmodifiableSet(this.sessionTrackingModes) : DEFAULT_SESSION_TRACKING_MODES);
}
@Override
public SessionCookieConfig getSessionCookieConfig() {
return this.sessionCookieConfig;
}
// @Override - but only against Servlet 4.0
public void setSessionTimeout(int sessionTimeout) {
this.sessionTimeout = sessionTimeout;
}
// @Override - but only against Servlet 4.0
public int getSessionTimeout() {
return this.sessionTimeout;
}
// @Override - but only against Servlet 4.0
public void setRequestCharacterEncoding(String requestCharacterEncoding) {
this.requestCharacterEncoding = requestCharacterEncoding;
}
// @Override - but only against Servlet 4.0
public String getRequestCharacterEncoding() {
return this.requestCharacterEncoding;
}
// @Override - but only against Servlet 4.0
public void setResponseCharacterEncoding(String responseCharacterEncoding) {
this.responseCharacterEncoding = responseCharacterEncoding;
}
// @Override - but only against Servlet 4.0
public String getResponseCharacterEncoding() {
return this.responseCharacterEncoding;
}
//---------------------------------------------------------------------
// Unsupported Servlet 3.0 registration methods
//---------------------------------------------------------------------
@Override
public JspConfigDescriptor getJspConfigDescriptor() {
throw new UnsupportedOperationException();
}
// @Override - but only against Servlet 4.0
public ServletRegistration.Dynamic addJspFile(String servletName, String jspFile) {
throw new UnsupportedOperationException();
}
@Override
public ServletRegistration.Dynamic addServlet(String servletName, String className) {
throw new UnsupportedOperationException();
}
@Override
public ServletRegistration.Dynamic addServlet(String servletName, Servlet servlet) {
throw new UnsupportedOperationException();
}
@Override
public ServletRegistration.Dynamic addServlet(String servletName, Class<? extends Servlet> servletClass) {
throw new UnsupportedOperationException();
}
@Override
public <T extends Servlet> T createServlet(Class<T> c) throws ServletException {
throw new UnsupportedOperationException();
}
/**
* This method always returns {@code null}.
* @see javax.servlet.ServletContext#getServletRegistration(java.lang.String)
*/
@Override
public ServletRegistration getServletRegistration(String servletName) {
return null;
}
/**
* This method always returns an {@linkplain Collections#emptyMap empty map}.
* @see javax.servlet.ServletContext#getServletRegistrations()
*/
@Override
public Map<String, ? extends ServletRegistration> getServletRegistrations() {
return Collections.emptyMap();
}
@Override
public FilterRegistration.Dynamic addFilter(String filterName, String className) {
throw new UnsupportedOperationException();
}
@Override
public FilterRegistration.Dynamic addFilter(String filterName, Filter filter) {
throw new UnsupportedOperationException();
}
@Override
public FilterRegistration.Dynamic addFilter(String filterName, Class<? extends Filter> filterClass) {
throw new UnsupportedOperationException();
}
@Override
public <T extends Filter> T createFilter(Class<T> c) throws ServletException {
throw new UnsupportedOperationException();
}
/**
* This method always returns {@code null}.
* @see javax.servlet.ServletContext#getFilterRegistration(java.lang.String)
*/
@Override
public FilterRegistration getFilterRegistration(String filterName) {
return null;
}
/**
* This method always returns an {@linkplain Collections#emptyMap empty map}.
* @see javax.servlet.ServletContext#getFilterRegistrations()
*/
@Override
public Map<String, ? extends FilterRegistration> getFilterRegistrations() {
return Collections.emptyMap();
}
@Override
public void addListener(Class<? extends EventListener> listenerClass) {
throw new UnsupportedOperationException();
}
@Override
public void addListener(String className) {
throw new UnsupportedOperationException();
}
@Override
public <T extends EventListener> void addListener(T t) {
throw new UnsupportedOperationException();
}
@Override
public <T extends EventListener> T createListener(Class<T> c) throws ServletException {
throw new UnsupportedOperationException();
}
@Override
public String getVirtualServerName() {
throw new UnsupportedOperationException();
}
}