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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 {

using mozc::commands::Request;
using mozc::composer::Composer;
using mozc::composer::Table;
using mozc::config::Config;
using mozc::config::ConfigHandler;

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;
    // "りゅきゅけmぽ"
    EXPECT_TRUE(converter->StartConversion(
        &segments,
        "\xE3\x82\x8A\xE3\x82\x85"
        "\xE3\x81\x8D\xE3\x82\x85"
        "\xE3\x81\x91"
        "m"
        "\xE3\x81\xBD"));
  }
  {
    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;

  // "ここではきものをぬぐ"
  EXPECT_TRUE(converter->StartConversion(
      &segments,
      "\xE3\x81\x93\xE3\x81\x93\xE3\x81\xA7"
      "\xE3\x81\xAF\xE3\x81\x8D\xE3\x82\x82"
      "\xE3\x81\xAE\xE3\x82\x92\xE3\x81\xAC"
      "\xE3\x81\x90"));
  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());

  // "きものをぬぐ"
  EXPECT_EQ("\xE3\x81\x8D\xE3\x82\x82"
            "\xE3\x81\xAE\xE3\x82\x92"
            "\xE3\x81\xAC\xE3\x81\x90",
            segments.conversion_segment(1).key());
}

}  // namespace mozc