// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.

#include "util/hash.h"

#include "gtest/gtest.h"

namespace leveldb {

TEST(HASH, SignedUnsignedIssue) {
  const uint8_t data1[1] = {0x62};
  const uint8_t data2[2] = {0xc3, 0x97};
  const uint8_t data3[3] = {0xe2, 0x99, 0xa5};
  const uint8_t data4[4] = {0xe1, 0x80, 0xb9, 0x32};
  const uint8_t data5[48] = {
      0x01, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
      0x00, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00,
      0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x18, 0x28, 0x00, 0x00, 0x00,
      0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  };

  ASSERT_EQ(Hash(0, 0, 0xbc9f1d34), 0xbc9f1d34);
  ASSERT_EQ(
      Hash(reinterpret_cast<const char*>(data1), sizeof(data1), 0xbc9f1d34),
      0xef1345c4);
  ASSERT_EQ(
      Hash(reinterpret_cast<const char*>(data2), sizeof(data2), 0xbc9f1d34),
      0x5b663814);
  ASSERT_EQ(
      Hash(reinterpret_cast<const char*>(data3), sizeof(data3), 0xbc9f1d34),
      0x323c078f);
  ASSERT_EQ(
      Hash(reinterpret_cast<const char*>(data4), sizeof(data4), 0xbc9f1d34),
      0xed21633a);
  ASSERT_EQ(
      Hash(reinterpret_cast<const char*>(data5), sizeof(data5), 0x12345678),
      0xf333dabb);
}

}  // namespace leveldb

int main(int argc, char** argv) {
  testing::InitGoogleTest(&argc, argv);
  return RUN_ALL_TESTS();
}
