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#include "converter/sparse_connector.h"

#include <string>

#include "base/file_util.h"
#include "base/logging.h"
#include "base/mmap.h"
#include "base/scoped_ptr.h"
#include "data_manager/connection_file_reader.h"
#include "testing/base/public/gunit.h"

DECLARE_string(test_srcdir);

namespace mozc {

namespace {
const char kTestConnectionDataImagePath[] =
    "data_manager/testing/connection_data.data";
const char kTestConnectionFilePath[] =
    "data_manager/testing/connection_single_column.txt";
}  // namespace

TEST(SarseConnectorTest, SparseConnectorTest) {
  const string path = FileUtil::JoinPath(
      FLAGS_test_srcdir, kTestConnectionDataImagePath);
  Mmap cmmap;
  ASSERT_TRUE(cmmap.Open(path.c_str())) << "Failed to open image: " << path;
  scoped_ptr<SparseConnector> connector(
      new SparseConnector(cmmap.begin(), cmmap.size()));
  ASSERT_EQ(1, connector->GetResolution());

  const string connection_text_path =
      FileUtil::JoinPath(FLAGS_test_srcdir, kTestConnectionFilePath);
  for (ConnectionFileReader reader(connection_text_path);
       !reader.done(); reader.Next()) {
    const uint16 rid = reader.rid_of_left_node();
    const uint16 lid = reader.lid_of_right_node();
    const int cost = reader.cost();
    EXPECT_EQ(cost, connector->GetTransitionCost(rid, lid));
  }
}

}  // namespace mozc