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// CalculatorMock is a mock implementation of CalculatorInterface. It converts
// key to value with key-value pairs which are set beforehand.

#ifndef MOZC_REWRITER_CALCULATOR_CALCULATOR_MOCK_H_
#define MOZC_REWRITER_CALCULATOR_CALCULATOR_MOCK_H_

#include <map>
#include <string>
#include <utility>

#include "rewriter/calculator/calculator_interface.h"

namespace mozc {

class CalculatorMock : public CalculatorInterface {
 public:
  CalculatorMock();
  virtual ~CalculatorMock();

  // Injects the behavior that CalculateString converts |key| to |value| and
  // returns |return_value|.
  void SetCalculatePair(const string &key,
                        const string &value,
                        bool return_value);

  // The number that CalculateString() has been called.
  int calculation_counter() const;

  // If |key| has been set by SetCalculatePair, then sets |*result| to the
  // corresponding value and returns |return_value|, otherwise clear |*result|
  // and returns false.
  virtual bool CalculateString(const string &key, string *result) const;

 private:
  typedef map<string, pair<string, bool> > CalculationMap;

  CalculationMap calculation_map_;
  mutable int calculation_counter_;
};

}  // namespace mozc

#endif  // MOZC_REWRITER_CALCULATOR_CALCULATOR_MOCK_H_