added md5_unittest

base/md5_unittest.cc

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <string>
+#include <string.h>

[Mark Mentovai, 2011/04/22 19:32:05]

C system headers should precede C++ system headers.

http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml?showone=Names_...

+
+#include "base/basictypes.h"
+#include "base/logging.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/md5.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using namespace std;

[Mark Mentovai, 2011/04/22 19:32:05]

I had asked you to fix this. “using namespace” is forbidden. Technically, you
can say “using std::string” in a .cc file, but it’s rare in Chromium code. It’s
most common to just write std::string everywhere you need it.

http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml?showone=Namesp...

+
+TEST(MD5, DigestToBase16) {
+  MD5Digest digest;
+
+  int data[] = {
+    0xd4, 0x1d, 0x8c, 0xd9,
+    0x8f, 0x00, 0xb2, 0x04,
+    0xe9, 0x80, 0x09, 0x98,
+    0xec, 0xf8, 0x42, 0x7e
+  };
+
+  for (int i = 0; i < 16; ++i) {
+    digest.a[i] = data[i] & 0xff;
+  }
+
+  string actual = MD5DigestToBase16(digest);
+  string expected = "d41d8cd98f00b204e9800998ecf8427e";
+
+  EXPECT_EQ(expected, actual);
+}
+
+TEST(MD5, MD5SumEmtpyData) {
+  MD5Digest digest;
+  const char* data = "";
+
+  MD5Sum(data, strlen(data), &digest);
+
+  int expected[] = {
+    0xd4, 0x1d, 0x8c, 0xd9,
+    0x8f, 0x00, 0xb2, 0x04,
+    0xe9, 0x80, 0x09, 0x98,
+    0xec, 0xf8, 0x42, 0x7e
+  };
+
+  for (int i = 0; i < 16; ++i) {
+    EXPECT_EQ(expected[i], digest.a[i] & 0xFF);
+  }
+}
+
+TEST(MD5, MD5SumOneByteData) {
+  MD5Digest digest;
+  const char* data = "a";
+
+  MD5Sum(data, strlen(data), &digest);
+
+  int expected[] = {
+    0x0c, 0xc1, 0x75, 0xb9,
+    0xc0, 0xf1, 0xb6, 0xa8,
+    0x31, 0xc3, 0x99, 0xe2,
+    0x69, 0x77, 0x26, 0x61
+  };
+
+  for (int i = 0; i < 16; ++i) {
+    EXPECT_EQ(expected[i], digest.a[i] & 0xFF);
+  }
+}
+
+TEST(MD5, MD5SumLongData) {
+  MD5Digest digest;
+
+  const int length = 10 * 1024 * 1024 + 1;
+  scoped_array<char> data(new char[length]);
+
+  for (int i = 0; i < length; ++i) {
+    data[i] = i & 0xFF;
+  }
+
+  MD5Sum(data.get(), length, &digest);
+
+  int expected[] = {
+    0x90, 0xbd, 0x6a, 0xd9,
+    0x0a, 0xce, 0xf5, 0xad,
+    0xaa, 0x92, 0x20, 0x3e,
+    0x21, 0xc7, 0xa1, 0x3e
+  };
+
+  for (int i = 0; i < 16; ++i) {
+    EXPECT_EQ(expected[i], digest.a[i] & 0xFF);
+  }
+}
+
+TEST(MD5, ContextWithEmptyData) {
+  MD5Context ctx;
+  MD5Init(&ctx);
+
+  MD5Digest digest;
+  MD5Final(&digest, &ctx);
+
+  int expected[] = {
+    0xd4, 0x1d, 0x8c, 0xd9,
+    0x8f, 0x00, 0xb2, 0x04,
+    0xe9, 0x80, 0x09, 0x98,
+    0xec, 0xf8, 0x42, 0x7e
+  };
+
+  for (int i = 0; i < 16; ++i) {
+    EXPECT_EQ(expected[i], digest.a[i] & 0xFF);
+  }
+}
+
+TEST(MD5, ContextWithLongData) {
+  MD5Context ctx;
+  MD5Init(&ctx);
+
+  const int length = 10 * 1024 * 1024 + 1;
+  scoped_array<char> data(new char[length]);
+
+  for (int i = 0; i < length; ++i) {
+    data[i] = i & 0xFF;
+  }
+
+  int total = 0;
+  while (total < length) {
+    int len = 4097;  // intentionally not 2^k.
+    if (len > length - total) {
+      len = length - total;
+    }
+
+    MD5Update(&ctx, data.get() + total, len);
+    total += len;
+  }
+
+  EXPECT_EQ(length, total);
+
+  MD5Digest digest;
+  MD5Final(&digest, &ctx);
+
+  int expected[] = {
+    0x90, 0xbd, 0x6a, 0xd9,
+    0x0a, 0xce, 0xf5, 0xad,
+    0xaa, 0x92, 0x20, 0x3e,
+    0x21, 0xc7, 0xa1, 0x3e
+  };
+
+  for (int i = 0; i < 16; ++i) {
+    EXPECT_EQ(expected[i], digest.a[i] & 0xFF);
+  }
+}
+
+// Example data from http://www.ietf.org/rfc/rfc1321.txt A.5 Test Suite
+TEST(MD5, MD5StringTestSuite1) {
+  string actual = MD5String("");
+  string expected = "d41d8cd98f00b204e9800998ecf8427e";
+  EXPECT_EQ(expected, actual);
+}
+
+TEST(MD5, MD5StringTestSuite2) {
+  string actual = MD5String("a");
+  string expected = "0cc175b9c0f1b6a831c399e269772661";
+  EXPECT_EQ(expected, actual);
+}
+
+TEST(MD5, MD5StringTestSuite3) {
+  string actual = MD5String("abc");
+  string expected = "900150983cd24fb0d6963f7d28e17f72";
+  EXPECT_EQ(expected, actual);
+}
+
+TEST(MD5, MD5StringTestSuite4) {
+  string actual = MD5String("message digest");
+  string expected = "f96b697d7cb7938d525a2f31aaf161d0";
+  EXPECT_EQ(expected, actual);
+}
+
+TEST(MD5, MD5StringTestSuite5) {
+  string actual = MD5String("abcdefghijklmnopqrstuvwxyz");
+  string expected = "c3fcd3d76192e4007dfb496cca67e13b";
+  EXPECT_EQ(expected, actual);
+}
+
+TEST(MD5, MD5StringTestSuite6) {
+  string actual = MD5String("ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+                            "abcdefghijklmnopqrstuvwxyz"
+                            "0123456789");
+  string expected = "d174ab98d277d9f5a5611c2c9f419d9f";
+  EXPECT_EQ(expected, actual);
+}
+
+TEST(MD5, MD5StringTestSuite7) {
+  string actual = MD5String("12345678901234567890"
+                            "12345678901234567890"
+                            "12345678901234567890"
+                            "12345678901234567890");
+  string expected = "57edf4a22be3c955ac49da2e2107b67a";
+  EXPECT_EQ(expected, actual);
+}