Split FaviconService and FaviconServiceImpl.

components/favicon/core/favicon_service_impl_unittest.cc

+// Copyright 2017 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 "components/favicon/core/favicon_service_impl.h"
+
+#include <memory>
+
+#include "base/files/scoped_temp_dir.h"
+#include "base/message_loop/message_loop.h"
+#include "components/favicon/core/favicon_client.h"
+#include "components/history/core/browser/history_service.h"
+#include "components/history/core/test/history_service_test_util.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace favicon {
+namespace {
+
+TEST(FaviconServiceImplTest, ShouldCacheUnableToDownloadFavicons) {
+  base::MessageLoop message_loop;
+  base::ScopedTempDir history_dir;
+  CHECK(history_dir.CreateUniqueTempDir());
+  std::unique_ptr<history::HistoryService> history_service =
+      history::CreateHistoryService(history_dir.GetPath(), /*create_db=*/false);
+  FaviconServiceImpl favicon_service(
+      /*favicon_client=*/nullptr, history_service.get());
+
+  const GURL icon1("http://www.google.com/favicon.ico");
+  const GURL icon2("http://www.youtube.com/favicon.ico");
+  EXPECT_FALSE(favicon_service.WasUnableToDownloadFavicon(icon1));
+  EXPECT_FALSE(favicon_service.WasUnableToDownloadFavicon(icon2));
+
+  favicon_service.UnableToDownloadFavicon(icon1);
+  EXPECT_TRUE(favicon_service.WasUnableToDownloadFavicon(icon1));
+  EXPECT_FALSE(favicon_service.WasUnableToDownloadFavicon(icon2));
+
+  favicon_service.UnableToDownloadFavicon(icon2);
+  EXPECT_TRUE(favicon_service.WasUnableToDownloadFavicon(icon2));
+
+  favicon_service.ClearUnableToDownloadFavicons();
+  EXPECT_FALSE(favicon_service.WasUnableToDownloadFavicon(icon1));
+  EXPECT_FALSE(favicon_service.WasUnableToDownloadFavicon(icon2));
+}
+
+}  // namespace
+}  // namespace favicon