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// * distributed with this work for additional information regarding copyright ownership.  The ASF licenses this file        *
// * to you 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                                                                             *
// *                                                                                                                         *
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// ***************************************************************************************************************************
package org.apache.juneau.rest.mock2;

import static org.apache.juneau.internal.StringUtils.*;

import java.io.*;
import java.security.*;
import java.util.*;

import javax.servlet.*;
import javax.servlet.http.*;

import org.apache.juneau.internal.*;
import org.apache.juneau.rest.*;
import org.apache.juneau.rest.util.*;
import org.apache.juneau.rest.util.RestUtils;
import org.apache.juneau.urlencoding.*;
import org.apache.juneau.utils.*;

/**
 * An implementation of {@link HttpServletRequest} for mocking purposes.
 *
 * <ul class='seealso'>
 *    <li class='link'>{@doc juneau-rest-mock.MockRest}
 * </ul>
 */
public class MockServletRequest implements HttpServletRequest, MockHttpRequest {

   private String method = "GET";
   private Map<String,String[]> queryDataMap = new LinkedHashMap<>();
   private Map<String,String[]> formDataMap;
   private Map<String,String[]> headerMap = new TreeMap<>(String.CASE_INSENSITIVE_ORDER);
   private Map<String,Object> attributeMap = new LinkedHashMap<>();
   private String characterEncoding = "UTF-8";
   private byte[] body = new byte[0];
   private String protocol = "HTTP/1.1";
   private String scheme = "http";
   private String serverName = "localhost";
   private int serverPort = 8080;
   private String remoteAddr = "";
   private String remoteHost = "";
   private Locale locale = Locale.ENGLISH;
   private String realPath;
   private int remotePort;
   private String localName;
   private String localAddr;
   private int localPort;
   private RequestDispatcher requestDispatcher;
   private ServletContext servletContext;
   private DispatcherType dispatcherType;
   private String authType;
   private Cookie[] cookies;
   private String pathInfo;
   private String pathTranslated;
   private String contextPath = "";
   private String queryString;
   private String remoteUser;
   private Principal userPrincipal;
   private String requestedSessionId;
   private String requestURI;
   private String servletPath = "";
   private HttpSession httpSession = MockHttpSession.create();
   private RestContext restContext;
   private String uri = "";
   private boolean debug = false;
   private Set<String> roles = new LinkedHashSet<>();

   /**
    * Creates a new servlet request.
    *
    * Initialized with the following:
    * <ul>
    *    <li><c>"Accept: text/json+simple"</c>
    *    <li><c>"Content-Type: text/json"</c>
    * </ul>
    *
    * @return A new request.
    */
   public static MockServletRequest create() {
      MockServletRequest r = new MockServletRequest();
      return r;
   }

   /**
    * Creates a new servlet request with the specified method name and request path.
    *
    * Initialized with the following:
    * <ul>
    *    <li><c>"Accept: text/json+simple"</c>
    *    <li><c>"Content-Type: text/json"</c>
    * </ul>
    *
    * @param method The HTTP method  name.
    * @param path The request path.
    * @param pathArgs Optional path arguments.
    *
    * @return A new request.
    */
   public static MockServletRequest create(String method, String path, Object...pathArgs) {
      return create()
         .method(method)
         .uri(StringUtils.format(path, pathArgs));
   }

   /**
    * Specifies the <c>Accept</c> header value.
    *
    * @param value The <c>Accept</c> header value.
    * @return This object (for method chaining).
    */
   public MockServletRequest accept(String value) {
      return header("Accept", value);
   }

   /**
    * Specifies the <c>Content-Type</c> header value.
    *
    * @param value The <c>Content-Type</c> header value.
    * @return This object (for method chaining).
    */
   public MockServletRequest contentType(String value) {
      return header("Content-Type", value);
   }

   /**
    * Convenience method for setting <c>Accept</c> and <c>Content-Type</c> headers to <js>"application/json"</js>.
    *
    * @return This object (for method chaining).
    */
   public MockServletRequest json() {
      return accept("application/json").contentType("application/json");
   }

   /**
    * Convenience method for setting <c>Accept</c> and <c>Content-Type</c> headers to <js>"application/json+simple"</js>.
    *
    * @return This object (for method chaining).
    */
   public MockServletRequest simpleJson() {
      return accept("application/json+simple").contentType("application/json+simple");
   }

   /**
    * Convenience method for setting <c>Accept</c> and <c>Content-Type</c> headers to <js>"text/xml"</js>.
    *
    * @return This object (for method chaining).
    */
   public MockServletRequest xml() {
      return accept("text/xml").contentType("text/xml");
   }

   /**
    * Convenience method for setting <c>Accept</c> and <c>Content-Type</c> headers to <js>"text/html"</js>.
    *
    * @return This object (for method chaining).
    */
   public MockServletRequest html() {
      return accept("text/html").contentType("text/html");
   }

   /**
    * Convenience method for setting <c>Accept</c> and <c>Content-Type</c> headers to <js>"text/plain"</js>.
    *
    * @return This object (for method chaining).
    */
   public MockServletRequest plainText() {
      return accept("text/plain").contentType("text/plain");
   }

   /**
    * Convenience method for setting <c>Accept</c> and <c>Content-Type</c> headers to <js>"octal/msgpack"</js>.
    *
    * @return This object (for method chaining).
    */
   public MockServletRequest msgpack() {
      return accept("octal/msgpack").contentType("octal/msgpack");
   }

   /**
    * Convenience method for setting <c>Accept</c> and <c>Content-Type</c> headers to <js>"text/uon"</js>.
    *
    * @return This object (for method chaining).
    */
   public MockServletRequest uon() {
      return accept("text/uon").contentType("text/uon");
   }

   /**
    * Convenience method for setting <c>Accept</c> and <c>Content-Type</c> headers to <js>"application/x-www-form-urlencoded"</js>.
    *
    * @return This object (for method chaining).
    */
   public MockServletRequest urlEnc() {
      return accept("application/x-www-form-urlencoded").contentType("application/x-www-form-urlencoded");
   }

   /**
    * Convenience method for setting <c>Accept</c> and <c>Content-Type</c> headers to <js>"text/yaml"</js>.
    *
    * @return This object (for method chaining).
    */
   public MockServletRequest yaml() {
      return accept("text/yaml").contentType("text/yaml");
   }

   /**
    * Fluent setter.
    *
    * @param uri The URI of the request.
    * @return This object (for method chaining).
    */
   @Override /* MockHttpRequest */
   public MockServletRequest uri(String uri) {
      uri = emptyIfNull(uri);
      this.uri = uri;

      if (uri.indexOf('?') != -1) {
         String qs = uri.substring(uri.indexOf('?') + 1);
         if (qs.indexOf('#') != -1)
            qs = qs.substring(0, qs.indexOf('#'));
         queryDataMap.putAll(RestUtils.parseQuery(qs));
      }

      return this;
   }

   /**
    * Fluent setter.
    *
    * @param restContext The rest context.
    * @return This object (for method chaining).
    */
   public MockServletRequest restContext(RestContext restContext) {
      this.restContext = restContext;
      return this;
   }

   /**
    * Adds the specified roles on this request.
    *
    * @param roles The roles to add to this request.
    * @return This object (for method chaining).
    */
   public MockServletRequest roles(String...roles) {
      this.roles.addAll(Arrays.asList(roles));
      return this;
   }

   /**
    * Executes this request and returns the response object.
    *
    * @return The response object.
    * @throws IOException Stream exception occurred.
    * @throws ServletException Servlet exception occurred.
    */
   @Override /* MockHttpRequest */
   public MockServletResponse execute() throws ServletException, IOException {
      MockServletResponse res = MockServletResponse.create();
      restContext.getCallHandler().service(this, res);

      // If the status isn't set, something's broken.
      if (res.getStatus() == 0)
         throw new RuntimeException("Response status was 0.");

      if (debug)
         log(this, res);

      return res;
   }

   private void log(MockServletRequest req, MockServletResponse res) {
      StringBuilder sb = new StringBuilder();
      sb.append("\n=== HTTP Call =================================================================");

      sb.append("\n=== REQUEST ===");
      sb.append("\n---request headers---");
      for (Map.Entry<String,String[]> h : req.getHeaders().entrySet())
         for (String h2 : h.getValue())
            sb.append("\n").append(h.getKey()).append(": ").append(h2);
      sb.append("\n---request entity---");
      sb.append(body == null ? "NONE" : new String(body));
      sb.append("\n=== RESPONSE ===");
      sb.append("\nStatus: ").append(res.getStatus());
      sb.append("\n---response headers---");
      for (Map.Entry<String,String[]> h : res.getHeaders().entrySet())
         for (String h2 : h.getValue())
            sb.append("\n").append(h.getKey()).append(": ").append(h2);
      sb.append("\n---response content---\n");
      sb.append(res.getBodyAsString());
      sb.append("\n=== END ========================================================================");

      System.err.println(sb);  // NOT DEBUG
   }

   /**
    * Fluent setter.
    *
    * @param value The method name for this request.
    * @return This object (for method chaining).
    */
   @Override /* MockHttpRequest */
   public MockServletRequest method(String value) {
      this.method = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The character encoding.
    * @return This object (for method chaining).
    */
   public MockServletRequest characterEncoding(String value) {
      this.characterEncoding = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The protocol.
    * @return This object (for method chaining).
    */
   public MockServletRequest protocol(String value) {
      this.protocol = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The scheme.
    * @return This object (for method chaining).
    */
   public MockServletRequest scheme(String value) {
      this.scheme = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The server name.
    * @return This object (for method chaining).
    */
   public MockServletRequest serverName(String value) {
      this.serverName = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The server port.
    * @return This object (for method chaining).
    */
   public MockServletRequest serverPort(int value) {
      this.serverPort = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The remote address.
    * @return This object (for method chaining).
    */
   public MockServletRequest remoteAddr(String value) {
      this.remoteAddr = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The remote port.
    * @return This object (for method chaining).
    */
   public MockServletRequest remoteHost(String value) {
      this.remoteHost = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The locale.
    * @return This object (for method chaining).
    */
   public MockServletRequest locale(Locale value) {
      this.locale = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The real path.
    * @return This object (for method chaining).
    */
   public MockServletRequest realPath(String value) {
      this.realPath = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The remote port.
    * @return This object (for method chaining).
    */
   public MockServletRequest remotePort(int value) {
      this.remotePort = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The local name.
    * @return This object (for method chaining).
    */
   public MockServletRequest localName(String value) {
      this.localName = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The local address.
    * @return This object (for method chaining).
    */
   public MockServletRequest localAddr(String value) {
      this.localAddr = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The local port.
    * @return This object (for method chaining).
    */
   public MockServletRequest localPort(int value) {
      this.localPort = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The request dispatcher.
    * @return This object (for method chaining).
    */
   public MockServletRequest requestDispatcher(RequestDispatcher value) {
      this.requestDispatcher = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The servlet context.
    * @return This object (for method chaining).
    */
   public MockServletRequest servletContext(ServletContext value) {
      this.servletContext = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The dispatcher type.
    * @return This object (for method chaining).
    */
   public MockServletRequest dispatcherType(DispatcherType value) {
      this.dispatcherType = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The auth type.
    * @return This object (for method chaining).
    */
   public MockServletRequest authType(String value) {
      this.authType = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The cookies.
    * @return This object (for method chaining).
    */
   public MockServletRequest cookies(Cookie[] value) {
      this.cookies = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The path info.
    * @return This object (for method chaining).
    */
   public MockServletRequest pathInfo(String value) {
      this.pathInfo = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The path translated.
    * @return This object (for method chaining).
    */
   public MockServletRequest pathTranslated(String value) {
      this.pathTranslated = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The context path.
    * @return This object (for method chaining).
    */
   public MockServletRequest contextPath(String value) {
      this.contextPath = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The query string.
    * @return This object (for method chaining).
    */
   public MockServletRequest queryString(String value) {
      this.queryString = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The remote user.
    * @return This object (for method chaining).
    */
   public MockServletRequest remoteUser(String value) {
      this.remoteUser = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The user principal.
    * @return This object (for method chaining).
    */
   public MockServletRequest userPrincipal(Principal value) {
      this.userPrincipal = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The requested session ID.
    * @return This object (for method chaining).
    */
   public MockServletRequest requestedSessionId(String value) {
      this.requestedSessionId = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The request URI.
    * @return This object (for method chaining).
    */
   public MockServletRequest requestURI(String value) {
      this.requestURI = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The servlet path.
    * @return This object (for method chaining).
    */
   public MockServletRequest servletPath(String value) {
      this.servletPath = value;
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value The HTTP session.
    * @return This object (for method chaining).
    */
   public MockServletRequest httpSession(HttpSession value) {
      this.httpSession = value;
      return this;
   }

   @Override /* HttpServletRequest */
   public Object getAttribute(String name) {
      return attributeMap.get(name);
   }

   @Override /* HttpServletRequest */
   public Enumeration<String> getAttributeNames() {
      return Collections.enumeration(attributeMap.keySet());
   }

   @Override /* HttpServletRequest */
   public String getCharacterEncoding() {
      return characterEncoding;
   }

   @Override /* HttpServletRequest */
   public void setCharacterEncoding(String characterEncoding) throws UnsupportedEncodingException {
      this.characterEncoding = characterEncoding;
   }

   @Override /* HttpServletRequest */
   public int getContentLength() {
      return body == null ? 0 : body.length;
   }

   @Override /* HttpServletRequest */
   public long getContentLengthLong() {
      return body == null ? 0 : body.length;
   }

   @Override /* HttpServletRequest */
   public String getContentType() {
      return getHeader("Content-Type");
   }

   @Override /* HttpServletRequest */
   public ServletInputStream getInputStream() throws IOException {
      if (formDataMap != null)
         body = UrlEncodingSerializer.DEFAULT.toString(formDataMap).getBytes();
      return new BoundedServletInputStream(new ByteArrayInputStream(body), Integer.MAX_VALUE);
   }

   @Override /* HttpServletRequest */
   public String getParameter(String name) {
      String[] s = getParameterMap().get(name);
      return s == null || s.length == 0 ? null : s[0];
   }

   @Override /* HttpServletRequest */
   public Enumeration<String> getParameterNames() {
      return Collections.enumeration(new ArrayList<>(getParameterMap().keySet()));
   }

   @Override /* HttpServletRequest */
   public String[] getParameterValues(String name) {
      return getParameterMap().get(name);
   }

   @Override /* HttpServletRequest */
   public Map<String,String[]> getParameterMap() {
      if ("POST".equalsIgnoreCase(method)) {
         if (formDataMap == null) {
            try {
               formDataMap = RestUtils.parseQuery(IOUtils.read(body));
            } catch (IOException e) {
               e.printStackTrace();
            }
         }
         return formDataMap;
      }
      return queryDataMap;
   }

   @Override /* HttpServletRequest */
   public String getProtocol() {
      return protocol;
   }

   @Override /* HttpServletRequest */
   public String getScheme() {
      return scheme;
   }

   @Override /* HttpServletRequest */
   public String getServerName() {
      return serverName;
   }

   @Override /* HttpServletRequest */
   public int getServerPort() {
      return serverPort;
   }

   @Override /* HttpServletRequest */
   public BufferedReader getReader() throws IOException {
      return new BufferedReader(new InputStreamReader(getInputStream(), characterEncoding));
   }

   @Override /* HttpServletRequest */
   public String getRemoteAddr() {
      return remoteAddr;
   }

   @Override /* HttpServletRequest */
   public String getRemoteHost() {
      return remoteHost;
   }

   @Override /* HttpServletRequest */
   public void setAttribute(String name, Object o) {
      this.attributeMap.put(name, o);
   }

   @Override /* HttpServletRequest */
   public void removeAttribute(String name) {
      this.attributeMap.remove(name);
   }

   @Override /* HttpServletRequest */
   public Locale getLocale() {
      return locale;
   }

   @Override /* HttpServletRequest */
   public Enumeration<Locale> getLocales() {
      return Collections.enumeration(Arrays.asList(locale));
   }

   @Override /* HttpServletRequest */
   public boolean isSecure() {
      return false;
   }

   @Override /* HttpServletRequest */
   public RequestDispatcher getRequestDispatcher(String path) {
      return requestDispatcher;
   }

   @Override /* HttpServletRequest */
   public String getRealPath(String path) {
      return realPath;
   }

   @Override /* HttpServletRequest */
   public int getRemotePort() {
      return remotePort;
   }

   @Override /* HttpServletRequest */
   public String getLocalName() {
      return localName;
   }

   @Override /* HttpServletRequest */
   public String getLocalAddr() {
      return localAddr;
   }

   @Override /* HttpServletRequest */
   public int getLocalPort() {
      return localPort;
   }

   @Override /* HttpServletRequest */
   public ServletContext getServletContext() {
      return servletContext;
   }

   @Override /* HttpServletRequest */
   public AsyncContext startAsync() throws IllegalStateException {
      return null;
   }

   @Override /* HttpServletRequest */
   public AsyncContext startAsync(ServletRequest servletRequest, ServletResponse servletResponse) throws IllegalStateException {
      return null;
   }

   @Override /* HttpServletRequest */
   public boolean isAsyncStarted() {
      return false;
   }

   @Override /* HttpServletRequest */
   public boolean isAsyncSupported() {
      return false;
   }

   @Override /* HttpServletRequest */
   public AsyncContext getAsyncContext() {
      return null;
   }

   @Override /* HttpServletRequest */
   public DispatcherType getDispatcherType() {
      return dispatcherType;
   }

   @Override /* HttpServletRequest */
   public String getAuthType() {
      return authType;
   }

   @Override /* HttpServletRequest */
   public Cookie[] getCookies() {
      return cookies;
   }

   @Override /* HttpServletRequest */
   public long getDateHeader(String name) {
      String s = getHeader(name);
      return s == null ? 0 : org.apache.juneau.http.Date.forString(s).asDate().getTime();
   }

   @Override /* HttpServletRequest */
   public String getHeader(String name) {
      String[] s = headerMap.get(name);
      return s == null || s.length == 0 ? null : s[0];
   }

   @Override /* HttpServletRequest */
   public Enumeration<String> getHeaders(String name) {
      String[] s = headerMap.get(name);
      return Collections.enumeration(Arrays.asList(s == null ? new String[0] : s));
   }

   /**
    * Returns the headers defined on this request.
    *
    * @return The headers defined on this request.  Never <jk>null</jk>.
    */
   public Map<String,String[]> getHeaders() {
      return headerMap;
   }

   @Override /* HttpServletRequest */
   public Enumeration<String> getHeaderNames() {
      return Collections.enumeration(headerMap.keySet());
   }

   @Override /* HttpServletRequest */
   public int getIntHeader(String name) {
      String s = getHeader(name);
      return s == null || s.isEmpty() ? 0 : Integer.parseInt(s);
   }

   @Override /* HttpServletRequest */
   public String getMethod() {
      return method;
   }

   @Override /* HttpServletRequest */
   public String getPathInfo() {
      if (pathInfo == null) {
         pathInfo = getRequestURI();
         if (isNotEmpty(contextPath))
            pathInfo = pathInfo.substring(contextPath.length());
         if (isNotEmpty(servletPath))
            pathInfo = pathInfo.substring(servletPath.length());
      }
      return nullIfEmpty(urlDecode(pathInfo));
   }

   @Override /* HttpServletRequest */
   public String getPathTranslated() {
      if (pathTranslated == null)
         pathTranslated = "/mock-path" + getPathInfo();
      return pathTranslated;
   }

   @Override /* HttpServletRequest */
   public String getContextPath() {
      return contextPath;
   }

   @Override /* HttpServletRequest */
   public String getQueryString() {
      if (queryString == null) {
         if (queryDataMap.isEmpty())
            queryString = "";
         else {
            StringBuilder sb = new StringBuilder();
            for (Map.Entry<String,String[]> e : queryDataMap.entrySet())
               if (e.getValue() == null)
                  sb.append(sb.length() == 0 ? "" : "&").append(urlEncode(e.getKey()));
               else for (String v : e.getValue())
                  sb.append(sb.length() == 0 ? "" : "&").append(urlEncode(e.getKey())).append('=').append(urlEncode(v));
            queryString = sb.toString();
         }
      }
      return isEmpty(queryString) ? null : queryString;
   }

   @Override /* HttpServletRequest */
   public String getRemoteUser() {
      return remoteUser;
   }

   @Override /* HttpServletRequest */
   public boolean isUserInRole(String role) {
      return roles.contains(role);
   }

   @Override /* HttpServletRequest */
   public Principal getUserPrincipal() {
      return userPrincipal;
   }

   @Override /* HttpServletRequest */
   public String getRequestedSessionId() {
      return requestedSessionId;
   }

   @Override /* HttpServletRequest */
   public String getRequestURI() {
      if (requestURI == null) {
         requestURI = uri;
         requestURI = requestURI.replaceAll("^\\w+\\:\\/\\/[^\\/]+", "").replaceAll("\\?.*$", "");
      }
      return requestURI;
   }

   @Override /* HttpServletRequest */
   public StringBuffer getRequestURL() {
      return new StringBuffer(uri.replaceAll("\\?.*$", ""));
   }

   @Override /* HttpServletRequest */
   public String getServletPath() {
      return servletPath;
   }

   @Override /* HttpServletRequest */
   public HttpSession getSession(boolean create) {
      return httpSession;
   }

   @Override /* HttpServletRequest */
   public HttpSession getSession() {
      return httpSession;
   }

   @Override /* HttpServletRequest */
   public String changeSessionId() {
      return null;
   }

   @Override /* HttpServletRequest */
   public boolean isRequestedSessionIdValid() {
      return false;
   }

   @Override /* HttpServletRequest */
   public boolean isRequestedSessionIdFromCookie() {
      return false;
   }

   @Override /* HttpServletRequest */
   public boolean isRequestedSessionIdFromURL() {
      return false;
   }

   @Override /* HttpServletRequest */
   public boolean isRequestedSessionIdFromUrl() {
      return false;
   }

   @Override /* HttpServletRequest */
   public boolean authenticate(HttpServletResponse response) throws IOException, ServletException {
      return false;
   }

   @Override /* HttpServletRequest */
   public void login(String username, String password) throws ServletException {
   }

   @Override /* HttpServletRequest */
   public void logout() throws ServletException {
   }

   @Override /* HttpServletRequest */
   public Collection<Part> getParts() throws IOException, ServletException {
      return null;
   }

   @Override /* HttpServletRequest */
   public Part getPart(String name) throws IOException, ServletException {
      return null;
   }

   @Override /* HttpServletRequest */
   public <T extends HttpUpgradeHandler> T upgrade(Class<T> handlerClass) throws IOException, ServletException {
      return null;
   }

   //=================================================================================================================
   // Convenience methods
   //=================================================================================================================

   /**
    * Fluent setter.
    *
    * @param headers Headers to add to this request.
    * @return This object (for method chaining).
    */
   public MockServletRequest headers(Map<String,Object> headers) {
      if (headers != null)
         for (Map.Entry<String,Object> e : headers.entrySet())
            header(e.getKey(), e.getValue());
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param name Header name.
    * @param value
    *    Header value.
    *    <br>The value is converted to a simple string using {@link Object#toString()}.
    * @return This object (for method chaining).
    */
   @Override /* MockHttpRequest */
   public MockServletRequest header(String name, Object value) {
      if (value == null)
         headerMap.remove(name);
      else
         headerMap.put(name, new String[] {stringify(value)});
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param name Request attribute name.
    * @param value Request attribute value.
    * @return This object (for method chaining).
    */
   public MockServletRequest attribute(String name, Object value) {
      this.attributeMap.put(name, value);
      return this;
   }

   /**
    * Fluent setter.
    *
    * @param value
    *    The body of the request.
    *    <br>Can be any of the following data types:
    *    <ul>
    *       <li><code><jk>byte</jk>[]</code>
    *       <li>{@link Reader}
    *       <li>{@link InputStream}
    *       <li>{@link CharSequence}
    *    </ul>
    *    Any other types are converted to a string using the <c>toString()</c> method.
    * @return This object (for method chaining).
    */
   @Override /* MockHttpRequest */
   public MockServletRequest body(Object value) {
      try {
         if (value instanceof byte[])
            this.body = (byte[])value;
         else if (value instanceof Reader)
            this.body = IOUtils.read((Reader)value).getBytes();
         else if (value instanceof InputStream)
            this.body = IOUtils.readBytes((InputStream)value, 1024);
         else if (value instanceof CharSequence)
            this.body = ((CharSequence)value).toString().getBytes();
         else if (value != null)
            this.body = value.toString().getBytes();
      } catch (IOException e) {
         throw new RuntimeException(e);
      }
      return this;
   }

   /**
    * Adds a form data entry to this request.
    *
    * @param key The form data key.
    * @param value The form data value.
    *    <br>The value is converted to a simple string using {@link Object#toString()}.
    * @return This object (for method chaining).
    */
   public MockServletRequest formData(String key, Object value) {
      if (formDataMap == null)
         formDataMap = new LinkedHashMap<>();
      String s = stringify(value);
      String[] existing = formDataMap.get(key);
      if (existing == null)
         existing = new String[]{s};
      else
         existing = new AList<>().appendAll(Arrays.asList(existing)).append(s).toArray(new String[0]);
      formDataMap.put(key, existing);
      return this;
   }

   /**
    * Adds a query data entry to this request.
    *
    * @param key The query key.
    * @param value The query value.
    *    <br>The value is converted to a simple string using {@link Object#toString()}.
    * @return This object (for method chaining).
    */
   public MockServletRequest query(String key, Object value) {
      String s = stringify(value);
      String[] existing = queryDataMap.get(key);
      if (existing == null)
         existing = new String[]{s};
      else
         existing = new AList<>().appendAll(Arrays.asList(existing)).append(s).toArray(new String[0]);
      queryDataMap.put(key, existing);
      queryString = null;
      return this;
   }

   //=================================================================================================================
   // Convenience methods - headers
   //=================================================================================================================

   /**
    * Specifies the <c>Accept</c> header value on the request.
    *
    * @param value The new value.
    * @return This object (for method chaining).
    */
   public MockServletRequest accept(Object value) {
      return header("Accept", value);
   }

   /**
    * Specifies the <c>Accept-Charset</c> header value on the request.
    *
    * @param value The new value.
    * @return This object (for method chaining).
    */
   public MockServletRequest acceptCharset(Object value) {
      return header("Accept-Charset", value);
   }

   /**
    * Specifies the <c>Accept-Encoding</c> header value on the request.
    *
    * @param value The new value.
    * @return This object (for method chaining).
    */
   public MockServletRequest acceptEncoding(Object value) {
      return header("Accept-Encoding", value);
   }

   /**
    * Specifies the <c>Accept-Language</c> header value on the request.
    *
    * @param value The new value.
    * @return This object (for method chaining).
    */
   public MockServletRequest acceptLanguage(Object value) {
      return header("Accept-Language", value);
   }

   /**
    * Specifies the <c>Authorization</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest authorization(Object value) {
      return header("Authorization", value);
   }

   /**
    * Specifies the <c>Cache-Control</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest cacheControl(Object value) {
      return header("Cache-Control", value);
   }

   /**
    * Specifies the <c>X-Client-Version</c> header value on the request.
    *
    * @param value The new value.
    * @return This object (for method chaining).
    */
   public MockServletRequest clientVersion(Object value) {
      return header("X-Client-Version", value);
   }

   /**
    * Specifies the <c>Connection</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest connection(Object value) {
      return header("Connection", value);
   }

   /**
    * Specifies the <c>Content-Encoding</c> header value on the request.
    *
    * @param value The new value.
    * @return This object (for method chaining).
    */
   public MockServletRequest contentEncoding(Object value) {
      return header("Content-Encoding", value);
   }

   /**
    * Specifies the <c>Content-Length</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest contentLength(Object value) {
      return header("Content-Length", value);
   }

   /**
    * Specifies the <c>Content-Type</c> header value on the request.
    *
    * @param value The new value.
    * @return This object (for method chaining).
    */
   public MockServletRequest contentType(Object value) {
      return header("Content-Type", value);
   }

   /**
    * Specifies the <c>Date</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest date(Object value) {
      return header("Date", value);
   }

   /**
    * Specifies the <c>Expect</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest expect(Object value) {
      return header("Expect", value);
   }

   /**
    * Specifies the <c>From</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest from(Object value) {
      return header("From", value);
   }

   /**
    * Specifies the <c>Host</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest host(Object value) {
      return header("Host", value);
   }

   /**
    * Specifies the <c>If-Match</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest ifMatch(Object value) {
      return header("If-Match", value);
   }

   /**
    * Specifies the <c>If-Modified-Since</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest ifModifiedSince(Object value) {
      return header("If-Modified-Since", value);
   }

   /**
    * Specifies the <c>If-None-Match</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest ifNoneMatch(Object value) {
      return header("If-None-Match", value);
   }

   /**
    * Specifies the <c>If-Range</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest ifRange(Object value) {
      return header("If-Range", value);
   }

   /**
    * Specifies the <c>If-Unmodified-Since</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest ifUnmodifiedSince(Object value) {
      return header("If-Unmodified-Since", value);
   }

   /**
    * Specifies the <c>Max-Forwards</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest maxForwards(Object value) {
      return header("Max-Forwards", value);
   }

   /**
    * Specifies the <c>Pragma</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest pragma(Object value) {
      return header("Pragma", value);
   }

   /**
    * Specifies the <c>Proxy-Authorization</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest proxyAuthorization(Object value) {
      return header("Proxy-Authorization", value);
   }

   /**
    * Specifies the <c>Range</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest range(Object value) {
      return header("Range", value);
   }

   /**
    * Specifies the <c>Referer</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest referer(Object value) {
      return header("Referer", value);
   }

   /**
    * Specifies the <c>TE</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest te(Object value) {
      return header("TE", value);
   }

   /**
    * Specifies the <c>Upgrade</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest upgrade(Object value) {
      return header("Upgrade", value);
   }

   /**
    * Specifies the <c>User-Agent</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest userAgent(Object value) {
      return header("User-Agent", value);
   }

   /**
    * Specifies the <c>Warning</c> header value on the request.
    *
    * @param value The new value for the header.
    * @return This object (for method chaining).
    */
   public MockServletRequest warning(Object value) {
      return header("Warning", value);
   }

   /**
    * Enabled debug mode on this request.
    *
    * <p>
    * Causes information about the request execution to be sent to STDERR.
    *
    * @return This object (for method chaining).
    */
   public MockServletRequest debug() {
      return debug(true);
   }

   /**
    * Enabled debug mode on this request.
    *
    * <p>
    * Causes information about the request execution to be sent to STDERR.
    *
    * @param value The enable flag value.
    * @return This object (for method chaining).
    */
   public MockServletRequest debug(boolean value) {
      this.debug = value;
      header("X-Debug", value ? true : null);
      return this;
   }

   /**
    * Enabled no-trace on this request.
    *
    * <p>
    * Prevents errors from being logged on the server side if no-trace per-request is enabled.
    *
    * @return This object (for method chaining).
    */
   public MockServletRequest noTrace() {
      return noTrace(true);
   }

   /**
    * Enabled debug mode on this request.
    *
    * <p>
    * Prevents errors from being logged on the server side if no-trace per-request is enabled.
    *
    * @param value The enable flag value.
    * @return This object (for method chaining).
    */
   public MockServletRequest noTrace(boolean value) {
      header("X-NoTrace", true);
      return this;
   }
}