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#include <memory>

#include "absl/log/check.h"
#include "absl/strings/string_view.h"
#include "composer/composer.h"
#include "converter/converter_interface.h"
#include "converter/segments.h"
#include "engine/engine.h"
#include "engine/engine_factory.h"
#include "protocol/commands.pb.h"
#include "request/conversion_request.h"
#include "testing/gunit.h"
#include "testing/mozctest.h"

namespace mozc {
namespace {

ConversionRequest ConvReq(absl::string_view key) {
  composer::Composer composer;
  composer.SetPreeditTextForTestOnly(key);
  return ConversionRequestBuilder().SetComposer(composer).Build();
}

class ConverterRegressionTest : public testing::TestWithTempUserProfile {};

TEST_F(ConverterRegressionTest, QueryOfDeathTest) {
  std::unique_ptr<Engine> engine = EngineFactory::Create().value();
  std::shared_ptr<const ConverterInterface> converter = engine->GetConverter();

  CHECK(converter);
  {
    Segments segments;
    EXPECT_TRUE(
        converter->StartConversion(ConvReq("りゅきゅけmぽ"), &segments));
  }
  {
    Segments segments;
    EXPECT_TRUE(converter->StartConversion(ConvReq("5.1,||t:1"), &segments));
  }
  {
    Segments segments;
    // Converter returns false, but not crash.
    EXPECT_FALSE(converter->StartConversion(ConvReq(""), &segments));
  }
  {
    Segments segments;
    const ConversionRequest conv_request;
    // Converter returns false, but not crash.
    EXPECT_FALSE(converter->StartConversion(conv_request, &segments));
  }
}

TEST_F(ConverterRegressionTest, Regression3323108) {
  std::unique_ptr<Engine> engine = EngineFactory::Create().value();
  std::shared_ptr<const ConverterInterface> converter = engine->GetConverter();
  Segments segments;

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

}  // namespace
}  // namespace mozc
