25개 이상의 토픽을 선택하실 수 없습니다.
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55 lines
1.6 KiB
55 lines
1.6 KiB
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#include "port/port.h"
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#include "util/testharness.h"
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namespace leveldb {
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namespace port {
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class SHA1 { };
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static std::string TestSHA1(const char* data, size_t len) {
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char hash_val[20];
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SHA1_Hash(data, len, hash_val);
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char buf[41];
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for (int i = 0; i < 20; i++) {
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snprintf(buf + i * 2, 41 - i * 2,
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"%02x",
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static_cast<unsigned int>(static_cast<unsigned char>(
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hash_val[i])));
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}
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return std::string(buf, 40);
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}
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TEST(SHA1, Simple) {
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ASSERT_EQ("da39a3ee5e6b4b0d3255bfef95601890afd80709", TestSHA1("", 0));
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ASSERT_EQ("aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d", TestSHA1("hello", 5));
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std::string x(10000, 'x');
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ASSERT_EQ("f8c5cde791c5056cf515881e701c8a9ecb439a75",
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TestSHA1(x.data(), x.size()));
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}
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TEST(SHA1, Benchmark) {
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std::string data(1048576 * 100, 'x');
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double start = Env::Default()->NowMicros() * 1e-6;
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static const int kIters = 10;
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uint32_t sha1 = 0;
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for (int i = 0; i < kIters; i++) {
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char hash_val[20];
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SHA1_Hash(data.data(), data.size(), hash_val);
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sha1 |= hash_val[0];
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}
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double finish = Env::Default()->NowMicros() * 1e-6;
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double mb = (static_cast<long long int>(data.size()) * kIters) / 1048576.0;
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fprintf(stderr, "SHA1 %0.0f MB: %.3f secs; %.1f MB/s, dummy=0x%02x\n",
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mb, (finish - start), mb / (finish - start), sha1);
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}
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}
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}
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int main(int argc, char** argv) {
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return leveldb::test::RunAllTests();
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}
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