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https://github.com/deepseek-ai/3FS
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28 lines
789 B
C++
28 lines
789 B
C++
#include <folly/hash/Checksum.h>
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#include <folly/logging/xlog.h>
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#include "tests/GtestHelpers.h"
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namespace hf3fs::tests {
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namespace {
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TEST(Folly, CRC32C) {
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std::string a = "hello";
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auto crc1 = folly::crc32c(reinterpret_cast<const uint8_t *>(a.data()), a.size(), 0);
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std::string b = "world";
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auto crc2 = folly::crc32c(reinterpret_cast<const uint8_t *>(b.data()), b.size(), 0);
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auto x = folly::crc32c_combine(crc1, crc2, b.size());
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auto y = folly::crc32c(reinterpret_cast<const uint8_t *>(b.data()), b.size(), crc1);
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ASSERT_EQ(x, y);
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auto crc32c1 = ~0x14298C12; // 1MB zero.
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auto crc32c2 = ~0x527D5351; // one zero.
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auto out = folly::crc32c_combine(~crc32c1, crc32c2, 1);
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XLOGF(INFO, "{:08X} {:08X}", out, ~out);
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}
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} // namespace
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} // namespace hf3fs::tests
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