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 "content/browser/accessibility/browser_accessibility.h"
   8 #include "content/browser/accessibility/browser_accessibility_manager.h"
   9 #include "content/browser/accessibility/browser_accessibility_state_impl.h"
  10 #include "content/browser/frame_host/cross_process_frame_connector.h"
  11 #include "content/browser/frame_host/frame_tree.h"
  12 #include "content/browser/frame_host/render_frame_proxy_host.h"
  13 #include "content/browser/frame_host/render_widget_host_view_child_frame.h"
  14 #include "content/browser/renderer_host/render_view_host_impl.h"
  15 #include "content/browser/site_per_process_browsertest.h"
  16 #include "content/browser/web_contents/web_contents_impl.h"
  17 #include "content/public/browser/notification_observer.h"
  18 #include "content/public/browser/notification_service.h"
  19 #include "content/public/browser/notification_types.h"
  20 #include "content/public/browser/web_contents_observer.h"
  21 #include "content/public/common/content_switches.h"
  22 #include "content/public/test/browser_test_utils.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
  32 namespace content {
  33
  34 class SitePerProcessAccessibilityBrowserTest
  35     : public SitePerProcessBrowserTest {
  36  public:
  37   SitePerProcessAccessibilityBrowserTest() {}
  38 };
  39
  40 // TODO(nasko): try enabling this test on more platforms once
  41 // SitePerProcessBrowserTest.CrossSiteIframe is enabled everywhere.
  42 // http://crbug.com/399775
  43 #if defined(OS_LINUX) && !defined(OS_CHROMEOS)
  44 #define MAYBE_CrossSiteIframeAccessibility CrossSiteIframeAccessibility
  45 #else
  46 #define MAYBE_CrossSiteIframeAccessibility DISABLED_CrossSiteIframeAccessibility
  47 #endif
  48 IN_PROC_BROWSER_TEST_F(SitePerProcessAccessibilityBrowserTest,
  49                        MAYBE_CrossSiteIframeAccessibility) {
  50   // Enable full accessibility for all current and future WebContents.
  51   BrowserAccessibilityState::GetInstance()->EnableAccessibility();
  52
  53   AccessibilityNotificationWaiter main_frame_accessibility_waiter(
  54       shell(), AccessibilityModeComplete,
  55       ui::AX_EVENT_LOAD_COMPLETE);
  56
  57   host_resolver()->AddRule("*", "127.0.0.1");
  58   ASSERT_TRUE(test_server()->Start());
  59   GURL main_url(test_server()->GetURL("files/site_per_process_main.html"));
  60   NavigateToURL(shell(), main_url);
  61
  62   // It is safe to obtain the root frame tree node here, as it doesn't change.
  63   FrameTreeNode* root =
  64       static_cast<WebContentsImpl*>(shell()->web_contents())->
  65           GetFrameTree()->root();
  66
  67   // Load same-site page into iframe.
  68   FrameTreeNode* child = root->child_at(0);
  69   GURL http_url(test_server()->GetURL("files/title1.html"));
  70   NavigateFrameToURL(child, http_url);
  71
  72   // These must stay in scope with replace_host.
  73   GURL::Replacements replace_host;
  74   std::string foo_com("foo.com");
  75
  76   // Load cross-site page into iframe.
  77   GURL cross_site_url(test_server()->GetURL("files/title2.html"));
  78   replace_host.SetHostStr(foo_com);
  79   cross_site_url = cross_site_url.ReplaceComponents(replace_host);
  80   NavigateFrameToURL(root->child_at(0), cross_site_url);
  81
  82   // Ensure that we have created a new process for the subframe.
  83   ASSERT_EQ(2U, root->child_count());
  84   SiteInstance* site_instance = child->current_frame_host()->GetSiteInstance();
  85   EXPECT_NE(shell()->web_contents()->GetSiteInstance(), site_instance);
  86
  87   // Wait until the accessibility tree from both the main frame and
  88   // cross-process iframe load.
  89   RenderFrameHostImpl* child_frame = static_cast<RenderFrameHostImpl*>(
  90       child->current_frame_host());
  91   AccessibilityNotificationWaiter child_frame_accessibility_waiter(
  92       child_frame, ui::AX_EVENT_NONE);
  93   main_frame_accessibility_waiter.WaitForNotification();
  94   child_frame_accessibility_waiter.WaitForNotification();
  95
  96   RenderFrameHostImpl* main_frame = static_cast<RenderFrameHostImpl*>(
  97       shell()->web_contents()->GetMainFrame());
  98   BrowserAccessibilityManager* main_frame_manager =
  99       main_frame->browser_accessibility_manager();
 100   VLOG(1) << "Main frame accessibility tree:\n"
 101           << main_frame_manager->SnapshotAXTreeForTesting().ToString();
 102
 103   BrowserAccessibilityManager* child_frame_manager =
 104       child_frame->browser_accessibility_manager();
 105   VLOG(1) << "Child frame accessibility tree:\n"
 106           << child_frame_manager->SnapshotAXTreeForTesting().ToString();
 107
 108   // Assert that we can walk from the main frame down into the child frame
 109   // directly, getting correct roles and data along the way.
 110   BrowserAccessibility* ax_root = main_frame_manager->GetRoot();
 111   ASSERT_EQ(ui::AX_ROLE_ROOT_WEB_AREA, ax_root->GetRole());
 112   ASSERT_EQ(1U, ax_root->PlatformChildCount());
 113
 114   BrowserAccessibility* ax_group = ax_root->PlatformGetChild(0);
 115   ASSERT_EQ(ui::AX_ROLE_GROUP, ax_group->GetRole());
 116   ASSERT_EQ(2U, ax_group->PlatformChildCount());
 117
 118   BrowserAccessibility* ax_iframe = ax_group->PlatformGetChild(0);
 119   ASSERT_EQ(ui::AX_ROLE_IFRAME, ax_iframe->GetRole());
 120   ASSERT_EQ(1U, ax_iframe->PlatformChildCount());
 121
 122   BrowserAccessibility* ax_scroll_area = ax_iframe->PlatformGetChild(0);
 123   ASSERT_EQ(ui::AX_ROLE_SCROLL_AREA, ax_scroll_area->GetRole());
 124   ASSERT_EQ(1U, ax_scroll_area->PlatformChildCount());
 125
 126   BrowserAccessibility* ax_child_frame_root =
 127       ax_scroll_area->PlatformGetChild(0);
 128   ASSERT_EQ(ui::AX_ROLE_ROOT_WEB_AREA, ax_child_frame_root->GetRole());
 129   ASSERT_EQ(1U, ax_child_frame_root->PlatformChildCount());
 130   ASSERT_EQ("Title Of Awesomeness", ax_child_frame_root->name());
 131
 132   BrowserAccessibility* ax_child_frame_group =
 133       ax_child_frame_root->PlatformGetChild(0);
 134   ASSERT_EQ(ui::AX_ROLE_GROUP, ax_child_frame_group->GetRole());
 135   ASSERT_EQ(1U, ax_child_frame_group->PlatformChildCount());
 136
 137   BrowserAccessibility* ax_child_frame_static_text =
 138       ax_child_frame_group->PlatformGetChild(0);
 139   ASSERT_EQ(ui::AX_ROLE_STATIC_TEXT, ax_child_frame_static_text->GetRole());
 140   ASSERT_EQ(0U, ax_child_frame_static_text->PlatformChildCount());
 141
 142   // Last, check that the parent of the child frame root is correct.
 143   ASSERT_EQ(ax_child_frame_root->GetParent(), ax_scroll_area);
 144 }
 145
 146 }  // namespace content