// Copyright 2010-2012, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include "converter/sparse_connector.h"

#include <string>

#include "base/base.h"
#include "base/file_stream.h"
#include "base/logging.h"
#include "base/mmap.h"
#include "base/number_util.h"
#include "base/util.h"
#include "converter/connector_interface.h"
#include "testing/base/public/gunit.h"

DECLARE_string(test_srcdir);

namespace mozc {

namespace {
const char kTestConnectionDataImagePath[] =
    "converter/test_connection_data.data";
const char kTestConnectionFilePath[] = "data/test/dictionary/connection.txt";
}  // namespace

TEST(SarseConnectorTest, SparseConnectorTest) {
  string path = Util::JoinPath(
      FLAGS_test_srcdir, kTestConnectionDataImagePath);
  Mmap cmmap;
  CHECK(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());

  string connection_text_path =
      Util::JoinPath(FLAGS_test_srcdir, kTestConnectionFilePath);
  InputFileStream input(connection_text_path.c_str());
  string line;
  getline(input, line);  // Discard the first line.
  vector<string> fields;
  while (getline(input, line)) {
    fields.clear();
    Util::SplitStringUsing(line, "\t ", &fields);
    CHECK_GE(fields.size(), 3) << line;
    uint16 rid = static_cast<uint16>(NumberUtil::SimpleAtoi(fields[0]));
    uint16 lid = static_cast<uint16>(NumberUtil::SimpleAtoi(fields[1]));
    uint16 cost = static_cast<uint16>(NumberUtil::SimpleAtoi(fields[2]));

    EXPECT_EQ(cost, connector->GetTransitionCost(rid, lid));
  }
}

}  // namespace mozc