Re-committing http://codereview.chromium.org/6803005/ after fixing multi-dll build:

third_party/libphonenumber/cpp/src/re2_cache_test.cc

+// Copyright (C) 2011 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Author: Fredrik Roubert <roubert@google.com>
+
+#include <cstddef>
+#include <string>
+
+#include <gtest/gtest.h>
+#include <re2/re2.h>
+
+#include "re2_cache.h"
+
+namespace i18n {
+namespace phonenumbers {
+
+using std::string;
+
+class RE2CacheTest : public testing::Test {
+ protected:
+  static const size_t min_items_ = 2;
+
+  RE2CacheTest() : cache_(min_items_) {}
+  virtual ~RE2CacheTest() {}
+
+  RE2Cache cache_;
+};
+
+TEST_F(RE2CacheTest, CacheConstructor) {
+  ASSERT_TRUE(cache_.cache_impl_ != NULL);
+  EXPECT_TRUE(cache_.cache_impl_->empty());
+}
+
+TEST_F(RE2CacheTest, AccessConstructor) {
+  static const string foo("foo");
+  RE2Cache::ScopedAccess access(&cache_, foo);
+
+  EXPECT_TRUE(access.regexp_ != NULL);
+  ASSERT_TRUE(cache_.cache_impl_ != NULL);
+  EXPECT_EQ(1, cache_.cache_impl_->size());
+}
+
+TEST_F(RE2CacheTest, OperatorRE2) {
+  static const string foo("foo");
+  RE2Cache::ScopedAccess access(&cache_, foo);
+
+  const RE2& regexp = access;
+  EXPECT_EQ(foo, regexp.pattern());
+}
+
+}  // namespace phonenumbers
+}  // namespace i18n