text: /* Copyright (c) 2015 Kerio Technologies s.r.o.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
   * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN THIS NOTICE BE
   * LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR
   * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
   * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
   * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   *
   * Except as contained in this notice, the name of a copyright holder shall not
   * be used in advertising or otherwise to promote the sale, use or other
   * dealings in this Software without prior written authorization of the
   * copyright holder.
   */
  
  // StringUtils.h - string utilities for tests.
  #pragma once
  
  class RandomChars {
  public:
  	RandomChars(unsigned seed);
  	char next();
  
  private:
  	unsigned seed_;
  };
  
  std::string randomString(size_t size, unsigned seed);
  std::string sequenceString(size_t size, char first);
  std::string keyOfSize(size_t n, unsigned seed = 43515);
  std::string valueOfSize(size_t n, unsigned seed = 30472);
  std::string keyFor(unsigned n);
  std::vector<std::string> nonCollidingKeys(unsigned number);
  