[Suggestions] Adding a Thumbnail Manager for the Suggestions Service

chrome/browser/search/suggestions/thumbnail_manager_browsertest.cc

+// Copyright 2014 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 <string>
+
+#include "base/files/file_path.h"
+#include "chrome/browser/search/suggestions/proto/suggestions.pb.h"
+#include "chrome/browser/search/suggestions/thumbnail_manager.h"
+#include "chrome/test/base/in_process_browser_test.h"
+#include "chrome/test/base/testing_profile.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "content/public/test/test_utils.h"
+#include "net/test/spawned_test_server/spawned_test_server.h"
+#include "net/url_request/url_request_test_util.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/gfx/image/image_skia.h"
+#include "url/gurl.h"
+
+namespace {
+
+const char kTestUrl1[] = "http://go.com/";
+const char kTestUrl2[] = "http://goal.com/";
+const char kTestImagePath[] = "files/image_decoding/droids.png";
+const char kInvalidImagePath[] = "files/DOESNOTEXIST";
+
+const base::FilePath::CharType kDocRoot[] =
+    FILE_PATH_LITERAL("chrome/test/data");
+
+using content::BrowserThread;
+
+class ThumbnailManagerBrowserTest : public InProcessBrowserTest {
+ public:
+  ThumbnailManagerBrowserTest()
+    : num_callback_null_called_(0),
+      num_callback_valid_called_(0),
+      thread_bundle_(content::TestBrowserThreadBundle::IO_MAINLOOP),
+      test_server_(net::SpawnedTestServer::TYPE_HTTP,
+                   net::SpawnedTestServer::kLocalhost,
+                   base::FilePath(kDocRoot)) {}
+
+  virtual void SetUp() OVERRIDE {
+    ASSERT_TRUE(test_server_.Start());
+
+    context_ = new net::TestURLRequestContextGetter(
+        BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO));
+    context_->AddRef();
+  }
+
+  virtual void TearDown() OVERRIDE {
+    BrowserThread::ReleaseSoon(BrowserThread::IO, FROM_HERE, context_);
+  }
+
+  void OnThumbnailAvailable(const GURL& url, const SkBitmap* bitmap) {
+    if (bitmap) {
+      num_callback_valid_called_++;
+    } else {
+      num_callback_null_called_++;
+    }
+  }
+  int num_callback_null_called_;
+  int num_callback_valid_called_;
+  content::TestBrowserThreadBundle thread_bundle_;
+  net::SpawnedTestServer test_server_;
+  net::TestURLRequestContextGetter* context_;
+};
+
+}  // namespace
+
+namespace suggestions {
+
+IN_PROC_BROWSER_TEST_F(ThumbnailManagerBrowserTest, FetchThumbnails) {
+  SuggestionsProfile suggestions_profile;
+  ChromeSuggestion* suggestion = suggestions_profile.add_suggestions();
+  suggestion->set_url(kTestUrl1);
+  suggestion->set_thumbnail(test_server_.GetURL(kTestImagePath).spec());
+
+  TestingProfile profile;
+  ThumbnailManager thumbnail_manager(&profile);
+  thumbnail_manager.InitializeThumbnailMap(suggestions_profile);
+  thumbnail_manager.set_request_context(context_);
+
+  // Fetch existing URL.
+  thumbnail_manager.GetPageThumbnail(
+      GURL(kTestUrl1),
+      base::Bind(&ThumbnailManagerBrowserTest::OnThumbnailAvailable,
+                 base::Unretained(this)));
+
+  content::RunMessageLoop();
+
+  EXPECT_EQ(0, num_callback_null_called_);
+  EXPECT_EQ(1, num_callback_valid_called_);
+
+  // Fetch non-existing URL.
+  thumbnail_manager.GetPageThumbnail(
+      GURL(kTestUrl2),
+      base::Bind(&ThumbnailManagerBrowserTest::OnThumbnailAvailable,
+                 base::Unretained(this)));
+
+  content::RunMessageLoop();
+
+  EXPECT_EQ(1, num_callback_null_called_);
+  EXPECT_EQ(1, num_callback_valid_called_);
+}
+
+IN_PROC_BROWSER_TEST_F(ThumbnailManagerBrowserTest, FetchThumbnailsMultiple) {
+  SuggestionsProfile suggestions_profile;
+  ChromeSuggestion* suggestion = suggestions_profile.add_suggestions();
+  suggestion->set_url(kTestUrl1);
+  suggestion->set_thumbnail(test_server_.GetURL(kTestImagePath).spec());
+
+  TestingProfile profile;
+  ThumbnailManager thumbnail_manager(&profile);
+  thumbnail_manager.InitializeThumbnailMap(suggestions_profile);
+  thumbnail_manager.set_request_context(context_);
+
+  // Fetch non-existing URL, and add more while request is in flight.
+  for (int i = 0 ; i < 5; i++) {
+    thumbnail_manager.GetPageThumbnail(
+      GURL(kTestUrl1),
+      base::Bind(&ThumbnailManagerBrowserTest::OnThumbnailAvailable,
+                 base::Unretained(this)));
+  }
+
+  content::RunMessageLoop();
+
+  EXPECT_EQ(0, num_callback_null_called_);
+  EXPECT_EQ(5, num_callback_valid_called_);
+}
+
+IN_PROC_BROWSER_TEST_F(ThumbnailManagerBrowserTest, FetchThumbnailsInvalid) {
+  SuggestionsProfile suggestions_profile;
+  ChromeSuggestion* suggestion = suggestions_profile.add_suggestions();
+  suggestion->set_url(kTestUrl1);
+  suggestion->set_thumbnail(test_server_.GetURL(kInvalidImagePath).spec());
+
+  TestingProfile profile;
+  ThumbnailManager thumbnail_manager(&profile);
+  thumbnail_manager.InitializeThumbnailMap(suggestions_profile);
+  thumbnail_manager.set_request_context(context_);
+
+  // Fetch existing URL that has invalid thumbnail.
+  thumbnail_manager.GetPageThumbnail(
+      GURL(kTestUrl1),
+      base::Bind(&ThumbnailManagerBrowserTest::OnThumbnailAvailable,
+                 base::Unretained(this)));
+
+  content::RunMessageLoop();
+
+  EXPECT_EQ(1, num_callback_null_called_);
+  EXPECT_EQ(0, num_callback_valid_called_);
+}
+
+}  // namespace suggestions