net/instaweb/http/public/mock_callback.h

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * 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
 * 
 * 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.
 */


// Callbacks used for testing.

#ifndef NET_INSTAWEB_HTTP_PUBLIC_MOCK_CALLBACK_H_
#define NET_INSTAWEB_HTTP_PUBLIC_MOCK_CALLBACK_H_

#include "net/instaweb/http/public/async_fetch.h"
#include "net/instaweb/http/public/request_context.h"
#include "pagespeed/kernel/base/basictypes.h"
#include "pagespeed/kernel/base/gtest.h"

namespace net_instaweb {

// Callback that can be used for testing resource fetches which makes sure
// that Done() is called exactly once and with the expected success value.
// Can be used multiple times by calling Reset in between.
class ExpectStringAsyncFetch : public StringAsyncFetch {
 public:
  ExpectStringAsyncFetch(bool expect_success,
                         const RequestContextPtr& request_context)
      : StringAsyncFetch(request_context), expect_success_(expect_success) {}
  virtual ~ExpectStringAsyncFetch() {
    EXPECT_TRUE(done());
  }

  virtual void HandleDone(bool success) {
    EXPECT_FALSE(done()) << "Already Done; perhaps you reused without Reset()";
    StringAsyncFetch::HandleDone(success);
    EXPECT_EQ(expect_success_, success);
  }

  void set_expect_success(bool x) { expect_success_ = x; }

 private:
  bool expect_success_;

  DISALLOW_COPY_AND_ASSIGN(ExpectStringAsyncFetch);
};

}  // namespace net_instaweb

#endif  // NET_INSTAWEB_HTTP_PUBLIC_MOCK_CALLBACK_H_