// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/test/test_mock_time_task_runner.h"
#include "base/thread_task_runner_handle.h"
#include "net/base/backoff_entry.h"
#include "net/url_request/test_url_fetcher_factory.h"
#include "net/url_request/url_request_test_util.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace gcm {

// The base class for testing various GCM requests that contains all the common
// logic to set up a task runner and complete a request with retries.
class GCMRequestTestBase : public testing::Test {
 public:
  GCMRequestTestBase();
  ~GCMRequestTestBase() override;

  const net::BackoffEntry::Policy& GetBackoffPolicy() const;
  net::TestURLFetcher* GetFetcher() const;

  // Set the response status and body that will be returned by the URL fetch.
  void SetResponse(net::HttpStatusCode status_code,
                   const std::string& response_body);

  // Completes the URL fetch.
  // It can be overridden by the test class to add additional logic.
  virtual void CompleteFetch();

  net::URLRequestContextGetter* url_request_context_getter() const {
    return url_request_context_getter_.get();
  }

 private:
  // Fast forward the timer used in the test to retry the request immediately.
  void FastForwardToTriggerNextRetry();

  scoped_refptr<base::TestMockTimeTaskRunner> task_runner_;
  base::ThreadTaskRunnerHandle task_runner_handle_;
  scoped_refptr<net::TestURLRequestContextGetter> url_request_context_getter_;

  net::TestURLFetcherFactory url_fetcher_factory_;

  // Tracks the number of retries so far.
  int retry_count_;

  DISALLOW_COPY_AND_ASSIGN(GCMRequestTestBase);
};

}  // namespace gcm
