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author | Mike Hearn <hearn@google.com> | 2012-06-25 11:17:22 +0200 |
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committer | Pieter Wuille <pieter.wuille@gmail.com> | 2012-10-20 23:08:56 +0200 |
commit | 5e650d6d2dbfc284c300668e71188e663d8f0a45 (patch) | |
tree | bef5ac4e7bfa9845b23ea975be58fa3fe108ef4b /src/leveldb/util/crc32c_test.cc | |
parent | 38ac953b9df1f7a884c1ef0e94301e14c4e7477d (diff) | |
download | bitcoin-5e650d6d2dbfc284c300668e71188e663d8f0a45.tar.xz |
Import LevelDB 1.5, it will be used for the transaction database.
Diffstat (limited to 'src/leveldb/util/crc32c_test.cc')
-rw-r--r-- | src/leveldb/util/crc32c_test.cc | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/leveldb/util/crc32c_test.cc b/src/leveldb/util/crc32c_test.cc new file mode 100644 index 0000000000..4b957ee120 --- /dev/null +++ b/src/leveldb/util/crc32c_test.cc @@ -0,0 +1,72 @@ +// 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))); + + unsigned char 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 leveldb + +int main(int argc, char** argv) { + return leveldb::test::RunAllTests(); +} |