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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "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,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef BASE_URL_REQUEST_URL_REQUEST_TEST_JOB_H__
+#define BASE_URL_REQUEST_URL_REQUEST_TEST_JOB_H__
+
+#include "net/url_request/url_request.h"
+#include "net/url_request/url_request_job.h"
+
+// This job type is designed to help with simple unit tests. To use, you
+// probably want to inherit from it to set up the state you want. Then install
+// it as the protocol handler for the "test" scheme.
+//
+// It will respond to three URLs, which you can retrieve using the test_url*
+// getters, which will in turn respond with the corresponding responses returned
+// by test_data*. Any other URLs that begin with "test:" will return an error,
+// which might also be useful, you can use test_url_error() to retreive a
+// standard one.
+//
+// You can override the known URLs or the response data by overriding Start().
+//
+// When a job is created, it gets put on a queue of pending test jobs. To
+// process jobs on this queue, use ProcessOnePendingMessage, which will process
+// one step of the next job. If the job is incomplete, it will be added to the
+// end of the queue.
+class URLRequestTestJob : public URLRequestJob {
+ public:
+  URLRequestTestJob(URLRequest* request);
+  virtual ~URLRequestTestJob() {}
+
+  // the three URLs this handler will respond to
+  // FIXME(brettw): we should probably also have a redirect one
+  static GURL test_url_1();
+  static GURL test_url_2();
+  static GURL test_url_3();
+  static GURL test_url_error();
+
+  // the data that corresponds to each of the URLs above
+  static std::string test_data_1();
+  static std::string test_data_2();
+  static std::string test_data_3();
+
+  // Processes one pending message from the stack, returning true if any
+  // message was processed, or false if there are no more pending request
+  // notifications to send.
+  static bool ProcessOnePendingMessage();
+
+  // Factory method for protocol factory registration if callers don't subclass
+  static URLRequest::ProtocolFactory Factory;
+
+  // Job functions
+  virtual void Start();
+  virtual bool ReadRawData(char* buf, int buf_size, int *bytes_read);
+  virtual void Kill();
+  virtual bool GetMimeType(std::string* mime_type);
+  virtual void GetResponseInfo(net::HttpResponseInfo* info);
+
+ protected:
+  // This is what operation we are going to do next when this job is handled.
+  // When the stage is DONE, this job will not be put on the queue.
+  enum Stage { WAITING, DATA_AVAILABLE, ALL_DATA, DONE };
+
+  // Call to process the next opeation, usually sending a notification, and
+  // advancing the stage if necessary. THIS MAY DELETE THE OBJECT, we will
+  // return false if the operations are complete, true if there are more.
+  bool ProcessNextOperation();
+
+  // Called via InvokeLater to cause callbacks to occur after Start() returns.
+  void StartAsync();
+
+  Stage stage_;
+
+  // The data to send, will be set in Start()
+  std::string data_;
+
+  // current offset within data_
+  int offset_;
+
+  // Holds the buffer for an asynchronous ReadRawData call
+  char* async_buf_;
+  int async_buf_size_;
+};
+
+#endif  // BASE_URL_REQUEST_URL_REQUEST_TEST_JOB_H__