sync: Move unique_client_tag hashing code

sync/syncable/syncable_util_unittest.cc

Index: sync/syncable/syncable_util_unittest.cc
diff --git a/sync/syncable/syncable_util_unittest.cc b/sync/syncable/syncable_util_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..8f818f0a134ad60050facf2bba019e1439a212b9
--- /dev/null
+++ b/sync/syncable/syncable_util_unittest.cc
@@ -0,0 +1,32 @@
+// Copyright 2012 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 "sync/internal_api/public/base/model_type.h"
+#include "sync/syncable/syncable_util.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace syncer {
+namespace syncable {
+namespace {
+
+// Tests that the hashing algorithm has not changed.
+TEST(SyncableUtilTest, GenerateSyncableHash) {
+  EXPECT_EQ("OyaXV5mEzrPS4wbogmtKvRfekAI=",
+            GenerateSyncableHash(BOOKMARKS, "tag1"));
+  EXPECT_EQ("iNFQtRFQb+IZcn1kKUJEZDDkLs4=",
+            GenerateSyncableHash(PREFERENCES, "tag1"));
+  EXPECT_EQ("gO1cPZQXaM73sHOvSA+tKCKFs58=",
+            GenerateSyncableHash(AUTOFILL, "tag1"));
+
+  EXPECT_EQ("A0eYIHXM1/jVwKDDp12Up20IkKY=",
+            GenerateSyncableHash(BOOKMARKS, "tag2"));
+  EXPECT_EQ("XYxkF7bhS4eItStFgiOIAU23swI=",
+            GenerateSyncableHash(PREFERENCES, "tag2"));
+  EXPECT_EQ("GFiWzo5NGhjLlN+OyCfhy28DJTQ=",
+            GenerateSyncableHash(AUTOFILL, "tag2"));
+}
+
+}  // namespace
+}  // namespace syncer
+}  // namespace syncable