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#include <memory>
#include <string>

#include "base/file_util.h"
#include "base/system_util.h"
#include "composer/composer.h"
#include "composer/table.h"
#include "config/config_handler.h"
#include "converter/converter_interface.h"
#include "converter/segments.h"
#include "engine/engine_factory.h"
#include "engine/engine_interface.h"
#include "protocol/commands.pb.h"
#include "protocol/config.pb.h"
#include "request/conversion_request.h"
#include "testing/base/public/gunit.h"
#include "testing/base/public/mozctest.h"

namespace mozc {
namespace {

using commands::Request;
using composer::Composer;
using composer::Table;

class ConverterRegressionTest : public ::testing::Test {
 private:
  const testing::ScopedTmpUserProfileDirectory scoped_profile_dir_;
};

TEST_F(ConverterRegressionTest, QueryOfDeathTest) {
  std::unique_ptr<EngineInterface> engine(EngineFactory::Create());
  ConverterInterface *converter = engine->GetConverter();

  CHECK(converter);
  {
    Segments segments;
    EXPECT_TRUE(converter->StartConversion(&segments, "りゅきゅけmぽ"));
  }
  {
    Segments segments;
    EXPECT_TRUE(converter->StartConversion(&segments, "5.1,||t:1"));
  }
  {
    Segments segments;
    // Converter returns false, but not crash.
    EXPECT_FALSE(converter->StartConversion(&segments, ""));
  }
  {
    Segments segments;
    ConversionRequest conv_request;
    // Create an empty composer.
    const Table table;
    const commands::Request request;
    composer::Composer composer(&table, &request, nullptr);
    conv_request.set_composer(&composer);
    // Converter returns false, but not crash.
    EXPECT_FALSE(converter->StartConversionForRequest(conv_request, &segments));
  }
}

TEST_F(ConverterRegressionTest, Regression3323108) {
  std::unique_ptr<EngineInterface> engine(EngineFactory::Create());
  ConverterInterface *converter = engine->GetConverter();
  Segments segments;

  EXPECT_TRUE(converter->StartConversion(&segments, "ここではきものをぬぐ"));
  EXPECT_EQ(3, segments.conversion_segments_size());
  const ConversionRequest default_request;
  EXPECT_TRUE(converter->ResizeSegment(&segments, default_request, 1, 2));
  EXPECT_EQ(2, segments.conversion_segments_size());
  EXPECT_EQ("きものをぬぐ", segments.conversion_segment(1).key());
}

}  // namespace
}  // namespace mozc