content/browser/accessibility/site_per_process_accessibility_browsertest.cc

   1 // Copyright (c) 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/command_line.h"
   6 #include "base/strings/stringprintf.h"
   7 #include "base/strings/utf_string_conversions.h"
   8 #include "content/browser/accessibility/browser_accessibility.h"
   9 #include "content/browser/accessibility/browser_accessibility_manager.h"
  10 #include "content/browser/accessibility/browser_accessibility_state_impl.h"
  11 #include "content/browser/frame_host/cross_process_frame_connector.h"
  12 #include "content/browser/frame_host/frame_tree.h"
  13 #include "content/browser/frame_host/render_frame_proxy_host.h"
  14 #include "content/browser/frame_host/render_widget_host_view_child_frame.h"
  15 #include "content/browser/renderer_host/render_view_host_impl.h"
  16 #include "content/browser/site_per_process_browsertest.h"
  17 #include "content/browser/web_contents/web_contents_impl.h"
  18 #include "content/public/browser/notification_observer.h"
  19 #include "content/public/browser/notification_service.h"
  20 #include "content/public/browser/notification_types.h"
  21 #include "content/public/browser/web_contents_observer.h"
  22 #include "content/public/common/content_switches.h"
  23 #include "content/public/test/content_browser_test.h"
  24 #include "content/public/test/content_browser_test_utils.h"
  25 #include "content/public/test/test_utils.h"
  26 #include "content/shell/browser/shell.h"
  27 #include "content/test/accessibility_browser_test_utils.h"
  28 #include "content/test/content_browser_test_utils_internal.h"
  29 #include "net/dns/mock_host_resolver.h"
  30 #include "url/gurl.h"
  31 #include "url/url_constants.h"
  32
  33 namespace content {
  34
  35 class SitePerProcessAccessibilityBrowserTest
  36     : public SitePerProcessBrowserTest {
  37  public:
  38   SitePerProcessAccessibilityBrowserTest() {}
  39 };
  40
  41 bool AccessibilityTreeContainsDocTitle(
  42     BrowserAccessibility* node,
  43     const std::string& title) {
  44   if (node->GetStringAttribute(ui::AX_ATTR_DOC_TITLE) == title)
  45     return true;
  46   for (unsigned i = 0; i < node->PlatformChildCount(); i++) {
  47     if (AccessibilityTreeContainsDocTitle(node->PlatformGetChild(i), title))
  48       return true;
  49   }
  50   return false;
  51 }
  52
  53 // Utility function to determine if an accessibility tree has finished loading
  54 // or if the tree represents a page that hasn't finished loading yet.
  55 bool AccessibilityTreeIsLoaded(BrowserAccessibilityManager* manager) {
  56   BrowserAccessibility* root = manager->GetRoot();
  57   return (root->GetFloatAttribute(ui::AX_ATTR_DOC_LOADING_PROGRESS) == 1.0 &&
  58           root->GetStringAttribute(ui::AX_ATTR_DOC_URL) != url::kAboutBlankURL);
  59 }
  60
  61 // Times out on Android, not clear if it's an actual bug or just slow.
  62 #if defined(OS_ANDROID)
  63 #define MAYBE_CrossSiteIframeAccessibility DISABLED_CrossSiteIframeAccessibility
  64 #else
  65 #define MAYBE_CrossSiteIframeAccessibility CrossSiteIframeAccessibility
  66 #endif
  67 IN_PROC_BROWSER_TEST_F(SitePerProcessAccessibilityBrowserTest,
  68                        MAYBE_CrossSiteIframeAccessibility) {
  69   // Enable full accessibility for all current and future WebContents.
  70   BrowserAccessibilityState::GetInstance()->EnableAccessibility();
  71
  72   host_resolver()->AddRule("*", "127.0.0.1");
  73   ASSERT_TRUE(test_server()->Start());
  74   GURL main_url(test_server()->GetURL("files/site_per_process_main.html"));
  75   NavigateToURL(shell(), main_url);
  76
  77   // It is safe to obtain the root frame tree node here, as it doesn't change.
  78   FrameTreeNode* root =
  79       static_cast<WebContentsImpl*>(shell()->web_contents())->
  80           GetFrameTree()->root();
  81
  82   // Load same-site page into iframe.
  83   FrameTreeNode* child = root->child_at(0);
  84   GURL http_url(test_server()->GetURL("files/title1.html"));
  85   NavigateFrameToURL(child, http_url);
  86
  87   // Load cross-site page into iframe.
  88   RenderFrameHostImpl* child_rfh =
  89       child->render_manager()->current_frame_host();
  90   RenderFrameDeletedObserver deleted_observer(child_rfh);
  91   GURL::Replacements replace_host;
  92   GURL cross_site_url(test_server()->GetURL("files/title2.html"));
  93   replace_host.SetHostStr("foo.com");
  94   cross_site_url = cross_site_url.ReplaceComponents(replace_host);
  95   NavigateFrameToURL(root->child_at(0), cross_site_url);
  96
  97   // Ensure that we have created a new process for the subframe.
  98   ASSERT_EQ(2U, root->child_count());
  99   SiteInstance* site_instance = child->current_frame_host()->GetSiteInstance();
 100   EXPECT_NE(shell()->web_contents()->GetSiteInstance(), site_instance);
 101
 102   // Wait until the iframe completes the swap.
 103   deleted_observer.WaitUntilDeleted();
 104
 105   RenderFrameHostImpl* main_frame = static_cast<RenderFrameHostImpl*>(
 106       shell()->web_contents()->GetMainFrame());
 107   BrowserAccessibilityManager* main_frame_manager =
 108       main_frame->browser_accessibility_manager();
 109   VLOG(1) << "Main frame accessibility tree:\n"
 110           << main_frame_manager->SnapshotAXTreeForTesting().ToString();
 111
 112   RenderFrameHostImpl* child_frame = static_cast<RenderFrameHostImpl*>(
 113       child->current_frame_host());
 114   while (!AccessibilityTreeContainsDocTitle(main_frame_manager->GetRoot(),
 115                                             "Title Of Awesomeness")) {
 116     AccessibilityNotificationWaiter accessibility_waiter(main_frame,
 117                                                          ui::AX_EVENT_NONE);
 118     accessibility_waiter.ListenToAdditionalFrame(child_frame);
 119     accessibility_waiter.WaitForNotification();
 120   }
 121
 122   // Assert that we can walk from the main frame down into the child frame
 123   // directly, getting correct roles and data along the way.
 124   BrowserAccessibility* ax_root = main_frame_manager->GetRoot();
 125   EXPECT_EQ(ui::AX_ROLE_ROOT_WEB_AREA, ax_root->GetRole());
 126   ASSERT_EQ(1U, ax_root->PlatformChildCount());
 127
 128   BrowserAccessibility* ax_group = ax_root->PlatformGetChild(0);
 129   EXPECT_EQ(ui::AX_ROLE_GROUP, ax_group->GetRole());
 130   ASSERT_EQ(2U, ax_group->PlatformChildCount());
 131
 132   BrowserAccessibility* ax_iframe = ax_group->PlatformGetChild(0);
 133   EXPECT_EQ(ui::AX_ROLE_IFRAME, ax_iframe->GetRole());
 134   ASSERT_EQ(1U, ax_iframe->PlatformChildCount());
 135
 136   BrowserAccessibility* ax_child_frame_root = ax_iframe->PlatformGetChild(0);
 137   EXPECT_EQ(ui::AX_ROLE_ROOT_WEB_AREA, ax_child_frame_root->GetRole());
 138   ASSERT_EQ(1U, ax_child_frame_root->PlatformChildCount());
 139   EXPECT_EQ("Title Of Awesomeness",
 140             ax_child_frame_root->GetStringAttribute(ui::AX_ATTR_NAME));
 141
 142   BrowserAccessibility* ax_child_frame_group =
 143       ax_child_frame_root->PlatformGetChild(0);
 144   EXPECT_EQ(ui::AX_ROLE_GROUP, ax_child_frame_group->GetRole());
 145   ASSERT_EQ(1U, ax_child_frame_group->PlatformChildCount());
 146
 147   BrowserAccessibility* ax_child_frame_static_text =
 148       ax_child_frame_group->PlatformGetChild(0);
 149   EXPECT_EQ(ui::AX_ROLE_STATIC_TEXT, ax_child_frame_static_text->GetRole());
 150   ASSERT_EQ(0U, ax_child_frame_static_text->PlatformChildCount());
 151
 152   // Last, check that the parent of the child frame root is correct.
 153   EXPECT_EQ(ax_child_frame_root->GetParent(), ax_iframe);
 154 }
 155
 156 }  // namespace content