Clear the favicon of a tab when navigating to a url on a different host.

chrome/browser/favicon/favicon_tab_helper_unittest.cc

+// Copyright (c) 2012 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 "chrome/browser/favicon/favicon_tab_helper.h"

[sky, 2012/10/16 23:00:17]

newline between 5/6.

+#include "chrome/test/base/chrome_render_view_host_test_harness.h"
+#include "content/public/browser/favicon_status.h"
+#include "content/public/browser/navigation_entry.h"
+#include "content/public/browser/notification_types.h"
+#include "content/public/test/test_notification_tracker.h"
+#include "content/public/test/test_renderer_host.h"
+#include "ui/gfx/image/image_skia.h"
+
+typedef ChromeRenderViewHostTestHarness FaviconTabHelperTest;
+
+// Ensure that the default favicon is used for pages without favicons.
+// This test checks that this is the case when the page is navigated to via a
+// client redirect. (crbug.com/28515)
+TEST_F(FaviconTabHelperTest, ClearFaviconOnRedirect) {
+  const GURL kPageWithFavicon("http://withfavicon.html");
+  const GURL kPageWithoutFavicon("http://withoutfavicon.html");
+  const GURL kIconURL("http://withfavicon.ico");
+  const gfx::ImageSkia default_favicon =
+      content::FaviconStatus().image.AsImageSkia();
+
+  content::NavigationController& controller = web_contents()->GetController();
+  content::TestNotificationTracker notifications;
+  notifications.ListenFor(
+      content::NOTIFICATION_NAV_ENTRY_COMMITTED,
+      content::Source<content::NavigationController>(&controller));
+
+  // Navigate to a page with a 'simulated' favicon.
+  rvh_tester()->SendNavigate(0, kPageWithFavicon);
+  EXPECT_TRUE(notifications.Check1AndReset(
+      content::NOTIFICATION_NAV_ENTRY_COMMITTED));
+
+  content::NavigationEntry* entry = controller.GetLastCommittedEntry();
+  EXPECT_TRUE(entry);
+  EXPECT_EQ(kPageWithFavicon, entry->GetURL());
+
+  // Simulate the favicon being set as a result of
+  // FaviconTabHelper::FetchFavicon().
+  SkBitmap bitmap;
+  bitmap.setConfig(SkBitmap::kARGB_8888_Config, 1, 1);
+  bitmap.allocPixels();
+
+  content::FaviconStatus& favicon_status =
+      controller.GetLastCommittedEntry()->GetFavicon();
+  favicon_status.image = gfx::Image(bitmap);
+  favicon_status.url = kIconURL;
+  favicon_status.valid = true;
+
+  FaviconTabHelper::CreateForWebContents(web_contents());
+  FaviconTabHelper* favicon_tab_helper =
+      FaviconTabHelper::FromWebContents(web_contents());
+  gfx::ImageSkia favicon = favicon_tab_helper->GetFavicon().AsImageSkia();
+  EXPECT_FALSE(favicon.BackedBySameObjectAs(default_favicon));
+
+  // Redirect to a page without a favicon.
+  rvh_tester()->SendNavigateWithTransition(
+      0,
+      kPageWithoutFavicon,
+      content::PAGE_TRANSITION_CLIENT_REDIRECT);
+  EXPECT_TRUE(notifications.Check1AndReset(
+      content::NOTIFICATION_NAV_ENTRY_COMMITTED));
+
+  entry = controller.GetLastCommittedEntry();
+  EXPECT_TRUE(entry);
+  EXPECT_EQ(kPageWithoutFavicon, entry->GetURL());
+
+  favicon = favicon_tab_helper->GetFavicon().AsImageSkia();
+  EXPECT_TRUE(favicon.BackedBySameObjectAs(default_favicon));
+}