Revert 46567 - Reimplement accessibility of web content by caching the entire...

chrome/browser/browser_accessibility_unittest.cc

-// Copyright (c) 2010 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 "base/scoped_ptr.h"
-#include "chrome/browser/browser_accessibility_manager.h"
-#include "chrome/browser/browser_accessibility.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-using webkit_glue::WebAccessibility;
-
-// Subclass of BrowserAccessibility that counts the number of instances.
-class CountedBrowserAccessibility : public BrowserAccessibility {
- public:
-  CountedBrowserAccessibility() { global_obj_count_++; }
-  virtual ~CountedBrowserAccessibility() { global_obj_count_--; }
-  static int global_obj_count_;
-};
-
-int CountedBrowserAccessibility::global_obj_count_ = 0;
-
-// Factory that creates a CountedBrowserAccessibility.
-class CountedBrowserAccessibilityFactory : public BrowserAccessibilityFactory {
- public:
-  virtual ~CountedBrowserAccessibilityFactory() {}
-  virtual BrowserAccessibility* Create() {
-    CComObject<CountedBrowserAccessibility>* instance;
-    HRESULT hr = CComObject<CountedBrowserAccessibility>::CreateInstance(
-        &instance);
-    DCHECK(SUCCEEDED(hr));
-    return instance->NewReference();
-  }
-};
-
-// Test that BrowserAccessibilityManager correctly releases the tree of
-// BrowserAccessibility instances upon delete.
-TEST(BrowserAccessibilityTest, TestNoLeaks) {
-  // ATL needs a pointer to a COM module.
-  CComModule module;
-  _pAtlModule = &module;
-  // Make sure COM is initialized for this thread; it's safe to call twice.
-  ::CoInitialize(NULL);
-
-  // Create WebAccessibility objects for a simple document tree,
-  // representing the accessibility information used to initialize
-  // BrowserAccessibilityManager.
-  WebAccessibility button;
-  button.id = 2;
-  button.name = L"Button";
-  button.role = WebAccessibility::ROLE_PUSHBUTTON;
-  button.state = 0;
-
-  WebAccessibility checkbox;
-  checkbox.id = 3;
-  checkbox.name = L"Checkbox";
-  checkbox.role = WebAccessibility::ROLE_CHECKBUTTON;
-  checkbox.state = 0;
-
-  WebAccessibility root;
-  root.id = 1;
-  root.name = L"Document";
-  root.role = WebAccessibility::ROLE_DOCUMENT;
-  root.state = 0;
-  root.children.push_back(button);
-  root.children.push_back(checkbox);
-
-  // Construct a BrowserAccessibilityManager with this WebAccessibility tree
-  // and a factory for an instance-counting BrowserAccessibility, and ensure
-  // that exactly 3 instances were created. Note that the manager takes
-  // ownership of the factory.
-  CountedBrowserAccessibility::global_obj_count_ = 0;
-  BrowserAccessibilityManager* manager =
-      new BrowserAccessibilityManager(
-          GetDesktopWindow(), root, new CountedBrowserAccessibilityFactory());
-  ASSERT_EQ(3, CountedBrowserAccessibility::global_obj_count_);
-
-  // Delete the manager and test that all 3 instances are deleted.
-  delete manager;
-  ASSERT_EQ(0, CountedBrowserAccessibility::global_obj_count_);
-
-  // Construct a manager again, and this time use the IAccessible interface
-  // to get new references to two of the three nodes in the tree.
-  manager = new BrowserAccessibilityManager(
-      GetDesktopWindow(), root, new CountedBrowserAccessibilityFactory());
-  ASSERT_EQ(3, CountedBrowserAccessibility::global_obj_count_);
-  BrowserAccessibility* root_accessible = manager->GetRoot();
-  IDispatch* root_iaccessible = NULL;
-  IDispatch* child1_iaccessible = NULL;
-  VARIANT var_child;
-  var_child.vt = VT_I4;
-  var_child.lVal = CHILDID_SELF;
-  HRESULT hr = root_accessible->get_accChild(var_child, &root_iaccessible);
-  ASSERT_EQ(S_OK, hr);
-  var_child.lVal = 1;
-  hr = root_accessible->get_accChild(var_child, &child1_iaccessible);
-  ASSERT_EQ(S_OK, hr);
-
-  // Now delete the manager, and only one of the three nodes in the tree
-  // should be released.
-  delete manager;
-  ASSERT_EQ(2, CountedBrowserAccessibility::global_obj_count_);
-
-  // Release each of our references and make sure that each one results in
-  // the instance being deleted as its reference count hits zero.
-  root_iaccessible->Release();
-  ASSERT_EQ(1, CountedBrowserAccessibility::global_obj_count_);
-  child1_iaccessible->Release();
-  ASSERT_EQ(0, CountedBrowserAccessibility::global_obj_count_);
-}