[C++11 Allowed Features] Declares a type-safe null pointer converting from NULL to nullptr

content/browser/accessibility/browser_accessibility_win_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 "base/memory/scoped_ptr.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/win/scoped_bstr.h"
 #include "base/win/scoped_comptr.h"
 #include "base/win/scoped_variant.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
@@ skipping 124 matching lines @@
   root.child_ids.push_back(3);
 
   // Construct a BrowserAccessibilityManager with this
   // ui::AXNodeData 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::reset();
   scoped_ptr<BrowserAccessibilityManager> manager(
       BrowserAccessibilityManager::Create(
           MakeAXTreeUpdate(root, button, checkbox),
-          NULL, new CountedBrowserAccessibilityFactory()));
+          nullptr, new CountedBrowserAccessibilityFactory()));
   ASSERT_EQ(3, CountedBrowserAccessibility::num_instances());
 
   // Delete the manager and test that all 3 instances are deleted.
   manager.reset();
   ASSERT_EQ(0, CountedBrowserAccessibility::num_instances());
 
   // 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.reset(BrowserAccessibilityManager::Create(
       MakeAXTreeUpdate(root, button, checkbox),
-      NULL, new CountedBrowserAccessibilityFactory()));
+      nullptr, new CountedBrowserAccessibilityFactory()));
   ASSERT_EQ(3, CountedBrowserAccessibility::num_instances());
   IAccessible* root_accessible =
       manager->GetRoot()->ToBrowserAccessibilityWin();
-  IDispatch* root_iaccessible = NULL;
-  IDispatch* child1_iaccessible = NULL;
+  IDispatch* root_iaccessible = nullptr;
+  IDispatch* child1_iaccessible = nullptr;
   base::win::ScopedVariant childid_self(CHILDID_SELF);
   HRESULT hr = root_accessible->get_accChild(childid_self, &root_iaccessible);
   ASSERT_EQ(S_OK, hr);
   base::win::ScopedVariant one(1);
   hr = root_accessible->get_accChild(one, &child1_iaccessible);
   ASSERT_EQ(S_OK, hr);
 
   // Now delete the manager, and only one of the three nodes in the tree
   // should be released.
   manager.reset();
@@ skipping 24 matching lines @@
   root.state = 0;
   root.child_ids.push_back(2);
 
   // Construct a BrowserAccessibilityManager with this
   // ui::AXNodeData tree and a factory for an instance-counting
   // BrowserAccessibility.
   CountedBrowserAccessibility::reset();
   scoped_ptr<BrowserAccessibilityManager> manager(
       BrowserAccessibilityManager::Create(
           MakeAXTreeUpdate(root, text),
-          NULL, new CountedBrowserAccessibilityFactory()));
+          nullptr, new CountedBrowserAccessibilityFactory()));
 
   // Query for the text IAccessible and verify that it returns "old text" as its
   // value.
   base::win::ScopedVariant one(1);
   base::win::ScopedComPtr<IDispatch> text_dispatch;
   HRESULT hr = manager->GetRoot()->ToBrowserAccessibilityWin()->get_accChild(
       one, text_dispatch.Receive());
   ASSERT_EQ(S_OK, hr);
 
   base::win::ScopedComPtr<IAccessible> text_accessible;
@@ skipping 75 matching lines @@
   root.child_ids.push_back(2);
 
   // Construct a BrowserAccessibilityManager with this
   // ui::AXNodeData tree and a factory for an instance-counting
   // BrowserAccessibility and ensure that exactly 4 instances were
   // created. Note that the manager takes ownership of the factory.
   CountedBrowserAccessibility::reset();
   scoped_ptr<BrowserAccessibilityManager> manager(
       BrowserAccessibilityManager::Create(
           MakeAXTreeUpdate(root, div, text3, text4),
-          NULL, new CountedBrowserAccessibilityFactory()));
+          nullptr, new CountedBrowserAccessibilityFactory()));
   ASSERT_EQ(4, CountedBrowserAccessibility::num_instances());
 
   // Notify the BrowserAccessibilityManager that the div node and its children
   // were removed and ensure that only one BrowserAccessibility instance exists.
   root.child_ids.clear();
   AccessibilityHostMsg_EventParams param;
   param.event_type = ui::AX_EVENT_CHILDREN_CHANGED;
   param.update.nodes.push_back(root);
   param.id = root.id;
   std::vector<AccessibilityHostMsg_EventParams> events;
@@ skipping 23 matching lines @@
   ui::AXNodeData root;
   root.id = 1;
   root.role = ui::AX_ROLE_ROOT_WEB_AREA;
   root.state = 0;
   root.child_ids.push_back(11);
 
   CountedBrowserAccessibility::reset();
   scoped_ptr<BrowserAccessibilityManager> manager(
       BrowserAccessibilityManager::Create(
           MakeAXTreeUpdate(root, text1),
-          NULL, new CountedBrowserAccessibilityFactory()));
+          nullptr, new CountedBrowserAccessibilityFactory()));
   ASSERT_EQ(2, CountedBrowserAccessibility::num_instances());
 
   BrowserAccessibilityWin* root_obj =
       manager->GetRoot()->ToBrowserAccessibilityWin();
   BrowserAccessibilityWin* text1_obj =
       root_obj->PlatformGetChild(0)->ToBrowserAccessibilityWin();
 
   long text1_len;
   ASSERT_EQ(S_OK, text1_obj->get_nCharacters(&text1_len));
 
@@ skipping 79 matching lines @@
   root.id = 1;
   root.role = ui::AX_ROLE_ROOT_WEB_AREA;
   root.state = 1 << ui::AX_STATE_READ_ONLY;
   root.child_ids.push_back(11);
   root.child_ids.push_back(12);
 
   CountedBrowserAccessibility::reset();
   scoped_ptr<BrowserAccessibilityManager> manager(
       BrowserAccessibilityManager::Create(
           MakeAXTreeUpdate(root, root, text1, text2),
-          NULL, new CountedBrowserAccessibilityFactory()));
+          nullptr, new CountedBrowserAccessibilityFactory()));
   ASSERT_EQ(3, CountedBrowserAccessibility::num_instances());
 
   BrowserAccessibilityWin* root_obj =
       manager->GetRoot()->ToBrowserAccessibilityWin();
 
   long text_len;
   ASSERT_EQ(S_OK, root_obj->get_nCharacters(&text_len));
 
   base::win::ScopedBstr text;
   ASSERT_EQ(S_OK, root_obj->get_text(0, text_len, text.Receive()));
@@ skipping 71 matching lines @@
   root.child_ids.push_back(13);
   root.child_ids.push_back(12);
   root.child_ids.push_back(14);
 
   CountedBrowserAccessibility::reset();
   scoped_ptr<BrowserAccessibilityManager> manager(
       BrowserAccessibilityManager::Create(
           MakeAXTreeUpdate(root,
                            text1, button1, button1_text,
                            text2, link1, link1_text),
-          NULL, new CountedBrowserAccessibilityFactory()));
+          nullptr, new CountedBrowserAccessibilityFactory()));
   ASSERT_EQ(7, CountedBrowserAccessibility::num_instances());
 
   BrowserAccessibilityWin* root_obj =
       manager->GetRoot()->ToBrowserAccessibilityWin();
 
   long text_len;
   ASSERT_EQ(S_OK, root_obj->get_nCharacters(&text_len));
 
   base::win::ScopedBstr text;
   ASSERT_EQ(S_OK, root_obj->get_text(0, text_len, text.Receive()));
@@ skipping 52 matching lines @@
 TEST_F(BrowserAccessibilityTest, TestCreateEmptyDocument) {
   // Try creating an empty document with busy state. Readonly is
   // set automatically.
   CountedBrowserAccessibility::reset();
   const int32 busy_state = 1 << ui::AX_STATE_BUSY;
   const int32 readonly_state = 1 << ui::AX_STATE_READ_ONLY;
   const int32 enabled_state = 1 << ui::AX_STATE_ENABLED;
   scoped_ptr<BrowserAccessibilityManager> manager(
       new BrowserAccessibilityManagerWin(
           BrowserAccessibilityManagerWin::GetEmptyDocument(),
-          NULL,
+          nullptr,
           new CountedBrowserAccessibilityFactory()));
 
   // Verify the root is as we expect by default.
   BrowserAccessibility* root = manager->GetRoot();
   EXPECT_EQ(0, root->GetId());
   EXPECT_EQ(ui::AX_ROLE_ROOT_WEB_AREA, root->GetRole());
   EXPECT_EQ(busy_state | readonly_state | enabled_state, root->GetState());
 
   // Tree with a child textfield.
   ui::AXNodeData tree1_1;
@@ skipping 59 matching lines @@
 
 // This is a regression test for a bug where the initial empty document
 // loaded by a BrowserAccessibilityManagerWin couldn't be looked up by
 // its UniqueIDWin, because the AX Tree was loaded in
 // BrowserAccessibilityManager code before BrowserAccessibilityManagerWin
 // was initialized.
 TEST_F(BrowserAccessibilityTest, EmptyDocHasUniqueIdWin) {
   scoped_ptr<BrowserAccessibilityManagerWin> manager(
       new BrowserAccessibilityManagerWin(
           BrowserAccessibilityManagerWin::GetEmptyDocument(),
-          NULL,
+          nullptr,
           new CountedBrowserAccessibilityFactory()));
 
   // Verify the root is as we expect by default.
   BrowserAccessibility* root = manager->GetRoot();
   EXPECT_EQ(0, root->GetId());
   EXPECT_EQ(ui::AX_ROLE_ROOT_WEB_AREA, root->GetRole());
   EXPECT_EQ(1 << ui::AX_STATE_BUSY |
             1 << ui::AX_STATE_READ_ONLY |
             1 << ui::AX_STATE_ENABLED,
             root->GetState());
 
   LONG unique_id_win = root->ToBrowserAccessibilityWin()->unique_id_win();
   ASSERT_EQ(root, manager->GetFromUniqueIdWin(unique_id_win));
 }
 
 }  // namespace content