1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef NET_BASE_TEST_DATA_STREAM_H_ 6 #define NET_BASE_TEST_DATA_STREAM_H_ 7 8 #include <string.h> // for memcpy(). 9 #include <algorithm> 10 #include "net/base/net_export.h" 11 12 // This is a class for generating an infinite stream of data which can be 13 // verified independently to be the correct stream of data. 14 15 namespace net { 16 17 class NET_EXPORT TestDataStream { 18 public: 19 TestDataStream(); 20 21 // Fill |buffer| with |length| bytes of data from the stream. 22 void GetBytes(char* buffer, int length); 23 24 // Verify that |buffer| contains the expected next |length| bytes from the 25 // stream. Returns true if correct, false otherwise. 26 bool VerifyBytes(const char *buffer, int length); 27 28 // Resets all the data. 29 void Reset(); 30 31 private: 32 // If there is no data spilled over from the previous index, advance the 33 // index and fill the buffer. 34 void AdvanceIndex(); 35 36 // Consume data from the spill buffer. 37 void Consume(int bytes); 38 39 int index_; 40 int bytes_remaining_; 41 char buffer_[16]; 42 char* buffer_ptr_; 43 }; 44 45 } // namespace net 46 47 #endif // NET_BASE_TEST_DATA_STREAM_H_ 48