Adds a modified copy of talk/base to webrtc/base. It is the first step in migrating talk/base to webrtc/base.

BUG=N/A
R=andrew@webrtc.org, wu@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/12199004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6107 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/base/crc32_unittest.cc

@@ -0,0 +1,35 @@
+/*
+ *  Copyright 2012 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "webrtc/base/crc32.h"
+#include "webrtc/base/gunit.h"
+
+#include <string>
+
+namespace rtc {
+
+TEST(Crc32Test, TestBasic) {
+  EXPECT_EQ(0U, ComputeCrc32(""));
+  EXPECT_EQ(0x352441C2U, ComputeCrc32("abc"));
+  EXPECT_EQ(0x171A3F5FU,
+      ComputeCrc32("abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"));
+}
+
+TEST(Crc32Test, TestMultipleUpdates) {
+  std::string input =
+      "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq";
+  uint32 c = 0;
+  for (size_t i = 0; i < input.size(); ++i) {
+    c = UpdateCrc32(c, &input[i], 1);
+  }
+  EXPECT_EQ(0x171A3F5FU, c);
+}
+
+}  // namespace rtc