Initial checkin.

git-svn-id: https://leveldb.googlecode.com/svn/trunk@2 62dab493-f737-651d-591e-8d6aee1b9529

port/sha1_test.cc

@@ -0,0 +1,55 @@
+// 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 "port/port.h"
+#include "util/testharness.h"
+
+namespace leveldb {
+namespace port {
+
+class SHA1 { };
+
+static std::string TestSHA1(const char* data, size_t len) {
+  char hash_val[20];
+  SHA1_Hash(data, len, hash_val);
+  char buf[41];
+  for (int i = 0; i < 20; i++) {
+    snprintf(buf + i * 2, 41 - i * 2,
+             "%02x",
+             static_cast<unsigned int>(static_cast<unsigned char>(
+                 hash_val[i])));
+  }
+  return std::string(buf, 40);
+}
+
+TEST(SHA1, Simple) {
+  ASSERT_EQ("da39a3ee5e6b4b0d3255bfef95601890afd80709", TestSHA1("", 0));
+  ASSERT_EQ("aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d", TestSHA1("hello", 5));
+  std::string x(10000, 'x');
+  ASSERT_EQ("f8c5cde791c5056cf515881e701c8a9ecb439a75",
+            TestSHA1(x.data(), x.size()));
+}
+
+TEST(SHA1, Benchmark) {
+  std::string data(1048576 * 100, 'x');
+  double start = Env::Default()->NowMicros() * 1e-6;
+  static const int kIters = 10;
+  uint32_t sha1 = 0;
+  for (int i = 0; i < kIters; i++) {
+    char hash_val[20];
+    SHA1_Hash(data.data(), data.size(), hash_val);
+    sha1 |= hash_val[0];
+  }
+  double finish = Env::Default()->NowMicros() * 1e-6;
+  double mb = (static_cast<long long int>(data.size()) * kIters) / 1048576.0;
+  fprintf(stderr, "SHA1 %0.0f MB: %.3f secs; %.1f MB/s, dummy=0x%02x\n",
+          mb, (finish - start), mb / (finish - start), sha1);
+}
+
+}
+}
+
+int main(int argc, char** argv) {
+  return leveldb::test::RunAllTests();
+}