libaddressinput: Add fallback data for US address validation.

third_party/libaddressinput/chromium/cpp/test/retriever_test.cc

 // Copyright (C) 2013 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,
@@ skipping 104 matching lines @@
   Retriever bad_retriever(FakeDownloader::kFakeDataUrl,
                           scoped_ptr<Downloader>(new FaultyDownloader),
                           scoped_ptr<Storage>(new FakeStorage));
   bad_retriever.Retrieve(kKey, BuildCallback());
 
   EXPECT_FALSE(success_);
   EXPECT_EQ(kKey, key_);
   EXPECT_TRUE(data_.empty());
 }
 
+TEST_F(RetrieverTest, FaultyDownloaderFallback) {
+  Retriever bad_retriever(FakeDownloader::kFakeDataUrl,
+                          scoped_ptr<Downloader>(new FaultyDownloader),
+                          scoped_ptr<Storage>(new FakeStorage));
+  const char kFallbackDataKey[] = "data/US";
+  bad_retriever.Retrieve(kFallbackDataKey, BuildCallback());
+
+  EXPECT_TRUE(success_);
+  EXPECT_EQ(kFallbackDataKey, key_);
+  EXPECT_FALSE(data_.empty());
+  EXPECT_NE(kEmptyData, data_);
+}
+
 // The downloader that doesn't get back to you.
 class HangingDownloader : public Downloader {
  public:
   HangingDownloader() {}
   virtual ~HangingDownloader() {}
 
   // Downloader implementation.
   virtual void Download(const std::string& url,
                         scoped_ptr<Callback> downloaded) {}
 };
 
 TEST_F(RetrieverTest, RequestsDontStack) {
   Retriever slow_retriever(FakeDownloader::kFakeDataUrl,
                            scoped_ptr<Downloader>(new HangingDownloader),
                            scoped_ptr<Storage>(new FakeStorage));
 
   slow_retriever.Retrieve(kKey, BuildCallback());
   EXPECT_FALSE(success_);
   EXPECT_TRUE(key_.empty());
 
   EXPECT_NO_FATAL_FAILURE(slow_retriever.Retrieve(kKey, BuildCallback()));
 }
 
 }  // namespace
 
 }  // namespace addressinput
 }  // namespace i18n