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    * Redistributions of source code must retain the above copyright
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contributors may be used to endorse or promote products derived from
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,           
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*/

package com.google.refine;

import java.io.File;
import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.google.refine.RefineServlet;
import com.google.refine.commands.Command;

/**
 * Exposes protected methods of com.google.refine.RefineServlet as public for unit testing
 *
 */
public class RefineServletStub extends RefineServlet {

    private static File tempDir = null;
    
    //requirement of extending HttpServlet, not required for testing
    private static final long serialVersionUID = 1L;

    public void wrapService(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{
        super.service(request, response);
    }

    public String wrapGetCommandName(HttpServletRequest request){
        return super.getCommandKey(request);
    }
    
    @Override
    public File getTempDir() {
        if (tempDir == null) {
            try {
                tempDir = File.createTempFile("refine-test-dir", "");
                tempDir.deleteOnExit();
            } catch (IOException e) {
                throw new RuntimeException("Failed to create temp directory",e);
            }
        }
        return tempDir; 
    }

    //-------------------helper methods--------------
    /**
     * Helper method for inserting a mock object
     * @param commandName
     * @param command
     */
    public void insertCommand(String commandName, Command command ){
        registerOneCommand("core/" + commandName, command);
    }

    /**
     * Helper method for clearing up after testing
     * @param commandName
     */
    public void removeCommand( String commandName ){
        unregisterCommand("core/" + commandName);
    }
}