[rAc - libaddressinput] slay a Helper class.

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<const Downloader>(new FaultyDownloader),
                           scoped_ptr<Storage>(new FakeStorage));
   bad_retriever.Retrieve(kKey, BuildCallback());
 
   EXPECT_FALSE(success_);
   EXPECT_EQ(kKey, key_);
   EXPECT_TRUE(data_.empty());
 }
 
+// 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) const {}
+};
+
+TEST_F(RetrieverTest, RequestsDontStack) {
+  Retriever slow_retriever(FakeDownloader::kFakeDataUrl,
+                           scoped_ptr<const Downloader>(new HangingDownloader),
+                           scoped_ptr<Storage>(new FakeStorage));
+
+  slow_retriever.Retrieve(kKey, BuildCallback());
+  EXPECT_FALSE(success_);
+  EXPECT_TRUE(key_.empty());
+
+#if !defined(NDEBUG)
+  // This request should cause an assert.
+  ASSERT_DEATH(slow_retriever.Retrieve(kKey, BuildCallback()), "");
+#endif
+}
+
 }  // namespace
 
 }  // namespace addressinput
 }  // namespace i18n