MD5Update function uses StringPiece instead of raw buffer.

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.h>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/md5.h"
@@ skipping 102 matching lines @@
 
   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);
+    MD5Update(&ctx,
+              StringPiece(reinterpret_cast<char*>(data.get() + total), len));
     total += len;
   }
 
   EXPECT_EQ(length, total);
 
   MD5Digest digest;
   MD5Final(&digest, &ctx);
 
   int expected[] = {
     0x90, 0xbd, 0x6a, 0xd9,
@@ skipping 47 matching lines @@
 
 TEST(MD5, MD5StringTestSuite7) {
   std::string actual = MD5String("12345678901234567890"
                                  "12345678901234567890"
                                  "12345678901234567890"
                                  "12345678901234567890");
   std::string expected = "57edf4a22be3c955ac49da2e2107b67a";
   EXPECT_EQ(expected, actual);
 }
 
+TEST(MD5, ContextWithStringData) {
+  MD5Context ctx;
+  MD5Init(&ctx);
+
+  MD5Update(&ctx, "abc");
+
+  MD5Digest digest;
+  MD5Final(&digest, &ctx);
+
+  std::string actual = MD5DigestToBase16(digest);
+  std::string expected = "900150983cd24fb0d6963f7d28e17f72";
+
+  EXPECT_EQ(expected, actual);
+}
+
 }  // namespace base