/*
 * Copyright 2010 Google Inc.
 * 
 * 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 com.google.jstestdriver.server.handlers;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Collection;
import java.util.HashSet;

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

import org.easymock.EasyMock;

import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;
import com.google.jstestdriver.FileInfo;
import com.google.jstestdriver.FileSetCacheStrategy;

/**
 * Tests for the file cahcing handler.
 * 
 * @author rdionne@google.com (Robert Dionne)
 */
public class FileCacheHandlerTest extends junit.framework.TestCase {

  private final Gson gson = new Gson();

  public void testFileCache() throws Exception {
    HttpServletRequest request = EasyMock.createMock(HttpServletRequest.class);
    HttpServletResponse response = EasyMock.createMock(HttpServletResponse.class);
    FileCacheHandler handler = new FileCacheHandler(
        request, response, gson, new HashSet<FileInfo>(), new FileSetCacheStrategy());
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    PrintWriter writer = new PrintWriter(out);

    FileInfo info = new FileInfo("asdf", 1, -1, false, true, "data", "asdf");

    EasyMock.expect(request.getParameter("fileSet"))
        .andReturn(gson.toJson(new FileInfo[] {info}));
    EasyMock.expect(response.getWriter()).andReturn(writer);

    EasyMock.replay(request, response);

    handler.handleIt();
    writer.flush();
    Collection<FileInfo> infos = gson.fromJson(out.toString(),
        new TypeToken<Collection<FileInfo>>() {}.getType());
    assertEquals(info, infos.iterator().next());

    EasyMock.verify(request, response);
  }
}