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#ifndef MOZC_DICTIONARY_DICTIONARY_TEST_UTIL_H_
#define MOZC_DICTIONARY_DICTIONARY_TEST_UTIL_H_

#include <string>
#include <vector>

#include "dictionary/dictionary_interface.h"
#include "dictionary/dictionary_token.h"
#include "testing/base/public/gunit.h"

namespace mozc {
namespace dictionary {

// Used to collect all the tokens looked up.
class CollectTokenCallback : public DictionaryInterface::Callback {
 public:
  const vector<Token> &tokens() const { return tokens_; }
  void Clear() { tokens_.clear(); }

  virtual ResultType OnToken(StringPiece key, StringPiece actual_key,
                             const Token &token);

 private:
  vector<Token> tokens_;
};

// Used to test if a given token is looked up.
class CheckTokenExistenceCallback : public DictionaryInterface::Callback {
 public:
  explicit CheckTokenExistenceCallback(const Token *target_token);
  bool found() const { return found_; }

  virtual ResultType OnToken(StringPiece key, StringPiece actual_key,
                             const Token &token);

 private:
  const Token *target_token_;
  bool found_;
};

// Generates a human redable string of token(s).
string PrintToken(const Token &token);
string PrintTokens(const vector<Token> &tokens);
string PrintTokens(const vector<Token *> &token_ptrs);

// Tests if two tokens are equal to each other.
#define EXPECT_TOKEN_EQ(expected, actual)                         \
  EXPECT_PRED_FORMAT2(::mozc::dictionary::internal::IsTokenEqaul, \
                      expected, actual)

// Tests if two token vectors are equal to each other as unordered set.
#define EXPECT_TOKENS_EQ_UNORDERED(expected, actual)                         \
  EXPECT_PRED_FORMAT2(::mozc::dictionary::internal::AreTokensEqaulUnordered, \
                      expected, actual)

namespace internal {

::testing::AssertionResult IsTokenEqaul(
     const char *expected_expr, const char *actual_expr,
     const Token &expected, const Token &actual);

::testing::AssertionResult AreTokensEqaulUnordered(
     const char *expected_expr, const char *actual_expr,
     const vector<Token *> &expected, const vector<Token> &actual);

}  // namespace internal
}  // namespace dictionary
}  // namespace mozc


#endif  // MOZC_DICTIONARY_DICTIONARY_TEST_UTIL_H_