git / moonbite-core / src/leveldb/util/crc32c_test.cc · raw

// 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/crc32c.h"#include "util/testharness.h"namespace leveldb {namespace crc32c {class CRC {};TEST(CRC, StandardResults) {  // From rfc3720 section B.4.  char buf[32];  memset(buf, 0, sizeof(buf));  ASSERT_EQ(0x8a9136aa, Value(buf, sizeof(buf)));  memset(buf, 0xff, sizeof(buf));  ASSERT_EQ(0x62a8ab43, Value(buf, sizeof(buf)));  for (int i = 0; i < 32; i++) {    buf[i] = i;  }  ASSERT_EQ(0x46dd794e, Value(buf, sizeof(buf)));  for (int i = 0; i < 32; i++) {    buf[i] = 31 - i;  }  ASSERT_EQ(0x113fdb5c, Value(buf, sizeof(buf)));  uint8_t data[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(0xd9963a56, Value(reinterpret_cast<char*>(data), sizeof(data)));}TEST(CRC, Values) { ASSERT_NE(Value("a", 1), Value("foo", 3)); }TEST(CRC, Extend) {  ASSERT_EQ(Value("hello world", 11), Extend(Value("hello ", 6), "world", 5));}TEST(CRC, Mask) {  uint32_t crc = Value("foo", 3);  ASSERT_NE(crc, Mask(crc));  ASSERT_NE(crc, Mask(Mask(crc)));  ASSERT_EQ(crc, Unmask(Mask(crc)));  ASSERT_EQ(crc, Unmask(Unmask(Mask(Mask(crc)))));}}  // namespace crc32c}  // namespace leveldbint main(int argc, char** argv) { return leveldb::test::RunAllTests(); }