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// 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 <string>
#include <vector>
#include "base/utf_string_conversions.h"
#include "content/browser/renderer_host/render_view_host_impl.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_types.h"
#include "content/public/browser/render_widget_host_view.h"
#include "content/public/browser/web_contents.h"
#include "content/public/test/test_utils.h"
#include "content/test/content_browser_test.h"
#include "content/test/content_browser_test_utils.h"
#include "content/shell/shell.h"
#if defined(OS_WIN)
#include <atlbase.h>
#include <atlcom.h>
#include "base/win/scoped_com_initializer.h"
#include "ui/base/win/atl_module.h"
#endif
// TODO(dmazzoni): Disabled accessibility tests on Win64. crbug.com/179717
#if defined(OS_WIN) && defined(ARCH_CPU_X86_64)
#define MAYBE_TableSpan DISABLED_TableSpan
#else
#define MAYBE_TableSpan TableSpan
#endif
namespace content {
class CrossPlatformAccessibilityBrowserTest : public ContentBrowserTest {
public:
CrossPlatformAccessibilityBrowserTest() {}
// Tell the renderer to send an accessibility tree, then wait for the
// notification that it's been received.
const AccessibilityNodeDataTreeNode& GetAccessibilityNodeDataTree(
AccessibilityMode accessibility_mode = AccessibilityModeComplete) {
scoped_refptr<MessageLoopRunner> loop_runner(new MessageLoopRunner);
RenderWidgetHostView* host_view =
shell()->web_contents()->GetRenderWidgetHostView();
RenderWidgetHostImpl* host =
RenderWidgetHostImpl::From(host_view->GetRenderWidgetHost());
RenderViewHostImpl* view_host = static_cast<RenderViewHostImpl*>(host);
view_host->SetAccessibilityLayoutCompleteCallbackForTesting(
loop_runner->QuitClosure());
view_host->set_save_accessibility_tree_for_testing(true);
view_host->SetAccessibilityMode(accessibility_mode);
loop_runner->Run();
return view_host->accessibility_tree_for_testing();
}
// Make sure each node in the tree has an unique id.
void RecursiveAssertUniqueIds(
const AccessibilityNodeDataTreeNode& node, base::hash_set<int>* ids) {
ASSERT_TRUE(ids->find(node.id) == ids->end());
ids->insert(node.id);
for (size_t i = 0; i < node.children.size(); i++)
RecursiveAssertUniqueIds(node.children[i], ids);
}
// ContentBrowserTest
virtual void SetUpInProcessBrowserTestFixture() OVERRIDE;
virtual void TearDownInProcessBrowserTestFixture() OVERRIDE;
protected:
std::string GetAttr(const AccessibilityNodeData& node,
const AccessibilityNodeData::StringAttribute attr);
int GetIntAttr(const AccessibilityNodeData& node,
const AccessibilityNodeData::IntAttribute attr);
bool GetBoolAttr(const AccessibilityNodeData& node,
const AccessibilityNodeData::BoolAttribute attr);
private:
#if defined(OS_WIN)
scoped_ptr<base::win::ScopedCOMInitializer> com_initializer_;
#endif
DISALLOW_COPY_AND_ASSIGN(CrossPlatformAccessibilityBrowserTest);
};
void CrossPlatformAccessibilityBrowserTest::SetUpInProcessBrowserTestFixture() {
#if defined(OS_WIN)
ui::win::CreateATLModuleIfNeeded();
com_initializer_.reset(new base::win::ScopedCOMInitializer());
#endif
}
void
CrossPlatformAccessibilityBrowserTest::TearDownInProcessBrowserTestFixture() {
#if defined(OS_WIN)
com_initializer_.reset();
#endif
}
// Convenience method to get the value of a particular AccessibilityNodeData
// node attribute as a UTF-8 const char*.
std::string CrossPlatformAccessibilityBrowserTest::GetAttr(
const AccessibilityNodeData& node,
const AccessibilityNodeData::StringAttribute attr) {
std::map<AccessibilityNodeData::StringAttribute, string16>::const_iterator
iter = node.string_attributes.find(attr);
if (iter != node.string_attributes.end())
return UTF16ToUTF8(iter->second);
else
return std::string();
}
// Convenience method to get the value of a particular AccessibilityNodeData
// node integer attribute.
int CrossPlatformAccessibilityBrowserTest::GetIntAttr(
const AccessibilityNodeData& node,
const AccessibilityNodeData::IntAttribute attr) {
std::map<AccessibilityNodeData::IntAttribute, int32>::const_iterator iter =
node.int_attributes.find(attr);
if (iter != node.int_attributes.end())
return iter->second;
else
return -1;
}
// Convenience method to get the value of a particular AccessibilityNodeData
// node boolean attribute.
bool CrossPlatformAccessibilityBrowserTest::GetBoolAttr(
const AccessibilityNodeData& node,
const AccessibilityNodeData::BoolAttribute attr) {
std::map<AccessibilityNodeData::BoolAttribute, bool>::const_iterator iter =
node.bool_attributes.find(attr);
if (iter != node.bool_attributes.end())
return iter->second;
else
return false;
}
// Marked flaky per http://crbug.com/101984
IN_PROC_BROWSER_TEST_F(CrossPlatformAccessibilityBrowserTest,
DISABLED_WebpageAccessibility) {
// Create a data url and load it.
const char url_str[] =
"data:text/html,"
"<!doctype html>"
"<html><head><title>Accessibility Test</title></head>"
"<body><input type='button' value='push' /><input type='checkbox' />"
"</body></html>";
GURL url(url_str);
NavigateToURL(shell(), url);
const AccessibilityNodeDataTreeNode& tree = GetAccessibilityNodeDataTree();
// Check properties of the root element of the tree.
EXPECT_STREQ(url_str,
GetAttr(tree, AccessibilityNodeData::ATTR_DOC_URL).c_str());
EXPECT_STREQ(
"Accessibility Test",
GetAttr(tree, AccessibilityNodeData::ATTR_DOC_TITLE).c_str());
EXPECT_STREQ(
"html", GetAttr(tree, AccessibilityNodeData::ATTR_DOC_DOCTYPE).c_str());
EXPECT_STREQ(
"text/html",
GetAttr(tree, AccessibilityNodeData::ATTR_DOC_MIMETYPE).c_str());
EXPECT_STREQ("Accessibility Test", UTF16ToUTF8(tree.name).c_str());
EXPECT_EQ(AccessibilityNodeData::ROLE_ROOT_WEB_AREA, tree.role);
// Check properites of the BODY element.
ASSERT_EQ(1U, tree.children.size());
const AccessibilityNodeDataTreeNode& body = tree.children[0];
EXPECT_EQ(AccessibilityNodeData::ROLE_GROUP, body.role);
EXPECT_STREQ("body",
GetAttr(body, AccessibilityNodeData::ATTR_HTML_TAG).c_str());
EXPECT_STREQ("block",
GetAttr(body, AccessibilityNodeData::ATTR_DISPLAY).c_str());
// Check properties of the two children of the BODY element.
ASSERT_EQ(2U, body.children.size());
const AccessibilityNodeDataTreeNode& button = body.children[0];
EXPECT_EQ(AccessibilityNodeData::ROLE_BUTTON, button.role);
EXPECT_STREQ(
"input", GetAttr(button, AccessibilityNodeData::ATTR_HTML_TAG).c_str());
EXPECT_STREQ("push", UTF16ToUTF8(button.name).c_str());
EXPECT_STREQ(
"inline-block",
GetAttr(button, AccessibilityNodeData::ATTR_DISPLAY).c_str());
ASSERT_EQ(2U, button.html_attributes.size());
EXPECT_STREQ("type", UTF16ToUTF8(button.html_attributes[0].first).c_str());
EXPECT_STREQ("button", UTF16ToUTF8(button.html_attributes[0].second).c_str());
EXPECT_STREQ("value", UTF16ToUTF8(button.html_attributes[1].first).c_str());
EXPECT_STREQ("push", UTF16ToUTF8(button.html_attributes[1].second).c_str());
const AccessibilityNodeDataTreeNode& checkbox = body.children[1];
EXPECT_EQ(AccessibilityNodeData::ROLE_CHECKBOX, checkbox.role);
EXPECT_STREQ(
"input", GetAttr(checkbox, AccessibilityNodeData::ATTR_HTML_TAG).c_str());
EXPECT_STREQ(
"inline-block",
GetAttr(checkbox, AccessibilityNodeData::ATTR_DISPLAY).c_str());
ASSERT_EQ(1U, checkbox.html_attributes.size());
EXPECT_STREQ(
"type", UTF16ToUTF8(checkbox.html_attributes[0].first).c_str());
EXPECT_STREQ(
"checkbox", UTF16ToUTF8(checkbox.html_attributes[0].second).c_str());
}
IN_PROC_BROWSER_TEST_F(CrossPlatformAccessibilityBrowserTest,
UnselectedEditableTextAccessibility) {
// Create a data url and load it.
const char url_str[] =
"data:text/html,"
"<!doctype html>"
"<body>"
"<input value=\"Hello, world.\"/>"
"</body></html>";
GURL url(url_str);
NavigateToURL(shell(), url);
const AccessibilityNodeDataTreeNode& tree = GetAccessibilityNodeDataTree();
ASSERT_EQ(1U, tree.children.size());
const AccessibilityNodeDataTreeNode& body = tree.children[0];
ASSERT_EQ(1U, body.children.size());
const AccessibilityNodeDataTreeNode& text = body.children[0];
EXPECT_EQ(AccessibilityNodeData::ROLE_TEXT_FIELD, text.role);
EXPECT_STREQ(
"input", GetAttr(text, AccessibilityNodeData::ATTR_HTML_TAG).c_str());
EXPECT_EQ(0, GetIntAttr(text, AccessibilityNodeData::ATTR_TEXT_SEL_START));
EXPECT_EQ(0, GetIntAttr(text, AccessibilityNodeData::ATTR_TEXT_SEL_END));
EXPECT_STREQ("Hello, world.", UTF16ToUTF8(text.value).c_str());
// TODO(dmazzoni): as soon as more accessibility code is cross-platform,
// this code should test that the accessible info is dynamically updated
// if the selection or value changes.
}
IN_PROC_BROWSER_TEST_F(CrossPlatformAccessibilityBrowserTest,
SelectedEditableTextAccessibility) {
// Create a data url and load it.
const char url_str[] =
"data:text/html,"
"<!doctype html>"
"<body onload=\"document.body.children[0].select();\">"
"<input value=\"Hello, world.\"/>"
"</body></html>";
GURL url(url_str);
NavigateToURL(shell(), url);
const AccessibilityNodeDataTreeNode& tree = GetAccessibilityNodeDataTree();
ASSERT_EQ(1U, tree.children.size());
const AccessibilityNodeDataTreeNode& body = tree.children[0];
ASSERT_EQ(1U, body.children.size());
const AccessibilityNodeDataTreeNode& text = body.children[0];
EXPECT_EQ(AccessibilityNodeData::ROLE_TEXT_FIELD, text.role);
EXPECT_STREQ(
"input", GetAttr(text, AccessibilityNodeData::ATTR_HTML_TAG).c_str());
EXPECT_EQ(0, GetIntAttr(text, AccessibilityNodeData::ATTR_TEXT_SEL_START));
EXPECT_EQ(13, GetIntAttr(text, AccessibilityNodeData::ATTR_TEXT_SEL_END));
EXPECT_STREQ("Hello, world.", UTF16ToUTF8(text.value).c_str());
}
IN_PROC_BROWSER_TEST_F(CrossPlatformAccessibilityBrowserTest,
MultipleInheritanceAccessibility) {
// In a WebKit accessibility render tree for a table, each cell is a
// child of both a row and a column, so it appears to use multiple
// inheritance. Make sure that the AccessibilityNodeDataObject tree only
// keeps one copy of each cell, and uses an indirect child id for the
// additional reference to it.
const char url_str[] =
"data:text/html,"
"<!doctype html>"
"<table border=1><tr><td>1</td><td>2</td></tr></table>";
GURL url(url_str);
NavigateToURL(shell(), url);
const AccessibilityNodeDataTreeNode& tree = GetAccessibilityNodeDataTree();
ASSERT_EQ(1U, tree.children.size());
const AccessibilityNodeDataTreeNode& table = tree.children[0];
EXPECT_EQ(AccessibilityNodeData::ROLE_TABLE, table.role);
const AccessibilityNodeDataTreeNode& row = table.children[0];
EXPECT_EQ(AccessibilityNodeData::ROLE_ROW, row.role);
const AccessibilityNodeDataTreeNode& cell1 = row.children[0];
EXPECT_EQ(AccessibilityNodeData::ROLE_CELL, cell1.role);
const AccessibilityNodeDataTreeNode& cell2 = row.children[1];
EXPECT_EQ(AccessibilityNodeData::ROLE_CELL, cell2.role);
const AccessibilityNodeDataTreeNode& column1 = table.children[1];
EXPECT_EQ(AccessibilityNodeData::ROLE_COLUMN, column1.role);
EXPECT_EQ(0U, column1.children.size());
EXPECT_EQ(1U, column1.indirect_child_ids.size());
EXPECT_EQ(cell1.id, column1.indirect_child_ids[0]);
const AccessibilityNodeDataTreeNode& column2 = table.children[2];
EXPECT_EQ(AccessibilityNodeData::ROLE_COLUMN, column2.role);
EXPECT_EQ(0U, column2.children.size());
EXPECT_EQ(1U, column2.indirect_child_ids.size());
EXPECT_EQ(cell2.id, column2.indirect_child_ids[0]);
}
IN_PROC_BROWSER_TEST_F(CrossPlatformAccessibilityBrowserTest,
MultipleInheritanceAccessibility2) {
// Here's another html snippet where WebKit puts the same node as a child
// of two different parents. Instead of checking the exact output, just
// make sure that no id is reused in the resulting tree.
const char url_str[] =
"data:text/html,"
"<!doctype html>"
"<script>\n"
" document.writeln('<q><section></section></q><q><li>');\n"
" setTimeout(function() {\n"
" document.close();\n"
" }, 1);\n"
"</script>";
GURL url(url_str);
NavigateToURL(shell(), url);
const AccessibilityNodeDataTreeNode& tree = GetAccessibilityNodeDataTree();
base::hash_set<int> ids;
RecursiveAssertUniqueIds(tree, &ids);
}
IN_PROC_BROWSER_TEST_F(CrossPlatformAccessibilityBrowserTest,
IframeAccessibility) {
// Create a data url and load it.
const char url_str[] =
"data:text/html,"
"<!doctype html><html><body>"
"<button>Button 1</button>"
"<iframe src='data:text/html,"
"<!doctype html><html><body><button>Button 2</button></body></html>"
"'></iframe>"
"<button>Button 3</button>"
"</body></html>";
GURL url(url_str);
NavigateToURL(shell(), url);
const AccessibilityNodeDataTreeNode& tree = GetAccessibilityNodeDataTree();
ASSERT_EQ(1U, tree.children.size());
const AccessibilityNodeDataTreeNode& body = tree.children[0];
ASSERT_EQ(3U, body.children.size());
const AccessibilityNodeDataTreeNode& button1 = body.children[0];
EXPECT_EQ(AccessibilityNodeData::ROLE_BUTTON, button1.role);
EXPECT_STREQ("Button 1", UTF16ToUTF8(button1.name).c_str());
const AccessibilityNodeDataTreeNode& iframe = body.children[1];
EXPECT_STREQ("iframe",
GetAttr(iframe, AccessibilityNodeData::ATTR_HTML_TAG).c_str());
ASSERT_EQ(1U, iframe.children.size());
const AccessibilityNodeDataTreeNode& scroll_area = iframe.children[0];
EXPECT_EQ(AccessibilityNodeData::ROLE_SCROLLAREA, scroll_area.role);
ASSERT_EQ(1U, scroll_area.children.size());
const AccessibilityNodeDataTreeNode& sub_document = scroll_area.children[0];
EXPECT_EQ(AccessibilityNodeData::ROLE_WEB_AREA, sub_document.role);
ASSERT_EQ(1U, sub_document.children.size());
const AccessibilityNodeDataTreeNode& sub_body = sub_document.children[0];
ASSERT_EQ(1U, sub_body.children.size());
const AccessibilityNodeDataTreeNode& button2 = sub_body.children[0];
EXPECT_EQ(AccessibilityNodeData::ROLE_BUTTON, button2.role);
EXPECT_STREQ("Button 2", UTF16ToUTF8(button2.name).c_str());
const AccessibilityNodeDataTreeNode& button3 = body.children[2];
EXPECT_EQ(AccessibilityNodeData::ROLE_BUTTON, button3.role);
EXPECT_STREQ("Button 3", UTF16ToUTF8(button3.name).c_str());
}
IN_PROC_BROWSER_TEST_F(CrossPlatformAccessibilityBrowserTest,
DuplicateChildrenAccessibility) {
// Here's another html snippet where WebKit has a parent node containing
// two duplicate child nodes. Instead of checking the exact output, just
// make sure that no id is reused in the resulting tree.
const char url_str[] =
"data:text/html,"
"<!doctype html>"
"<em><code ><h4 ></em>";
GURL url(url_str);
NavigateToURL(shell(), url);
const AccessibilityNodeDataTreeNode& tree = GetAccessibilityNodeDataTree();
base::hash_set<int> ids;
RecursiveAssertUniqueIds(tree, &ids);
}
IN_PROC_BROWSER_TEST_F(CrossPlatformAccessibilityBrowserTest,
MAYBE_TableSpan) {
// +---+---+---+
// | 1 | 2 |
// +---+---+---+
// | 3 | 4 |
// +---+---+---+
const char url_str[] =
"data:text/html,"
"<!doctype html>"
"<table border=1>"
" <tr>"
" <td colspan=2>1</td><td>2</td>"
" </tr>"
" <tr>"
" <td>3</td><td colspan=2>4</td>"
" </tr>"
"</table>";
GURL url(url_str);
NavigateToURL(shell(), url);
const AccessibilityNodeDataTreeNode& tree = GetAccessibilityNodeDataTree();
const AccessibilityNodeDataTreeNode& table = tree.children[0];
EXPECT_EQ(AccessibilityNodeData::ROLE_TABLE, table.role);
ASSERT_GE(table.children.size(), 5U);
EXPECT_EQ(AccessibilityNodeData::ROLE_ROW, table.children[0].role);
EXPECT_EQ(AccessibilityNodeData::ROLE_ROW, table.children[1].role);
EXPECT_EQ(AccessibilityNodeData::ROLE_COLUMN, table.children[2].role);
EXPECT_EQ(AccessibilityNodeData::ROLE_COLUMN, table.children[3].role);
EXPECT_EQ(AccessibilityNodeData::ROLE_COLUMN, table.children[4].role);
EXPECT_EQ(3,
GetIntAttr(table, AccessibilityNodeData::ATTR_TABLE_COLUMN_COUNT));
EXPECT_EQ(2, GetIntAttr(table, AccessibilityNodeData::ATTR_TABLE_ROW_COUNT));
const AccessibilityNodeDataTreeNode& cell1 = table.children[0].children[0];
const AccessibilityNodeDataTreeNode& cell2 = table.children[0].children[1];
const AccessibilityNodeDataTreeNode& cell3 = table.children[1].children[0];
const AccessibilityNodeDataTreeNode& cell4 = table.children[1].children[1];
ASSERT_EQ(6U, table.cell_ids.size());
EXPECT_EQ(cell1.id, table.cell_ids[0]);
EXPECT_EQ(cell1.id, table.cell_ids[1]);
EXPECT_EQ(cell2.id, table.cell_ids[2]);
EXPECT_EQ(cell3.id, table.cell_ids[3]);
EXPECT_EQ(cell4.id, table.cell_ids[4]);
EXPECT_EQ(cell4.id, table.cell_ids[5]);
EXPECT_EQ(0, GetIntAttr(cell1,
AccessibilityNodeData::ATTR_TABLE_CELL_COLUMN_INDEX));
EXPECT_EQ(0, GetIntAttr(cell1,
AccessibilityNodeData::ATTR_TABLE_CELL_ROW_INDEX));
EXPECT_EQ(2, GetIntAttr(cell1,
AccessibilityNodeData::ATTR_TABLE_CELL_COLUMN_SPAN));
EXPECT_EQ(1, GetIntAttr(cell1,
AccessibilityNodeData::ATTR_TABLE_CELL_ROW_SPAN));
EXPECT_EQ(2, GetIntAttr(cell2,
AccessibilityNodeData::ATTR_TABLE_CELL_COLUMN_INDEX));
EXPECT_EQ(1, GetIntAttr(cell2,
AccessibilityNodeData::ATTR_TABLE_CELL_COLUMN_SPAN));
EXPECT_EQ(0, GetIntAttr(cell3,
AccessibilityNodeData::ATTR_TABLE_CELL_COLUMN_INDEX));
EXPECT_EQ(1, GetIntAttr(cell3,
AccessibilityNodeData::ATTR_TABLE_CELL_COLUMN_SPAN));
EXPECT_EQ(1, GetIntAttr(cell4,
AccessibilityNodeData::ATTR_TABLE_CELL_COLUMN_INDEX));
EXPECT_EQ(2, GetIntAttr(cell4,
AccessibilityNodeData::ATTR_TABLE_CELL_COLUMN_SPAN));
}
IN_PROC_BROWSER_TEST_F(CrossPlatformAccessibilityBrowserTest,
WritableElement) {
const char url_str[] =
"data:text/html,"
"<!doctype html>"
"<div role='textbox' tabindex=0>"
" Some text"
"</div>";
GURL url(url_str);
NavigateToURL(shell(), url);
const AccessibilityNodeDataTreeNode& tree = GetAccessibilityNodeDataTree();
ASSERT_EQ(1U, tree.children.size());
const AccessibilityNodeDataTreeNode& textbox = tree.children[0];
EXPECT_EQ(
true, GetBoolAttr(textbox, AccessibilityNodeData::ATTR_CAN_SET_VALUE));
}
} // namespace content
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