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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 <stddef.h>
#include <stdint.h>
#include <string>
#include <vector>
#include "base/macros.h"
#include "base/strings/utf_string_conversions.h"
#include "build/build_config.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/test/content_browser_test.h"
#include "content/public/test/content_browser_test_utils.h"
#include "content/shell/browser/shell.h"
#include "content/test/accessibility_browser_test_utils.h"
#include "ui/accessibility/ax_node.h"
#include "ui/accessibility/ax_tree.h"
#if defined(OS_WIN)
#include "base/win/atl.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 ui::AXTree& GetAXTree(
ui::AXMode accessibility_mode = ui::kAXModeComplete) {
AccessibilityNotificationWaiter waiter(shell()->web_contents(),
accessibility_mode,
ax::mojom::Event::kLayoutComplete);
waiter.WaitForNotification();
return waiter.GetAXTree();
}
// Make sure each node in the tree has a unique id.
void RecursiveAssertUniqueIds(
const ui::AXNode* node, base::hash_set<int>* ids) {
ASSERT_TRUE(ids->find(node->id()) == ids->end());
ids->insert(node->id());
for (int i = 0; i < node->child_count(); i++)
RecursiveAssertUniqueIds(node->ChildAtIndex(i), ids);
}
// ContentBrowserTest
void SetUpOnMainThread() override;
void TearDownOnMainThread() override;
protected:
std::string GetAttr(const ui::AXNode* node,
const ax::mojom::StringAttribute attr);
int GetIntAttr(const ui::AXNode* node, const ax::mojom::IntAttribute attr);
bool GetBoolAttr(const ui::AXNode* node, const ax::mojom::BoolAttribute attr);
private:
#if defined(OS_WIN)
std::unique_ptr<base::win::ScopedCOMInitializer> com_initializer_;
#endif
DISALLOW_COPY_AND_ASSIGN(CrossPlatformAccessibilityBrowserTest);
};
void CrossPlatformAccessibilityBrowserTest::SetUpOnMainThread() {
#if defined(OS_WIN)
ui::win::CreateATLModuleIfNeeded();
com_initializer_.reset(new base::win::ScopedCOMInitializer());
#endif
}
void CrossPlatformAccessibilityBrowserTest::TearDownOnMainThread() {
#if defined(OS_WIN)
com_initializer_.reset();
#endif
}
// Convenience method to get the value of a particular AXNode
// attribute as a UTF-8 string.
std::string CrossPlatformAccessibilityBrowserTest::GetAttr(
const ui::AXNode* node,
const ax::mojom::StringAttribute attr) {
const ui::AXNodeData& data = node->data();
for (size_t i = 0; i < data.string_attributes.size(); ++i) {
if (data.string_attributes[i].first == attr)
return data.string_attributes[i].second;
}
return std::string();
}
// Convenience method to get the value of a particular AXNode
// integer attribute.
int CrossPlatformAccessibilityBrowserTest::GetIntAttr(
const ui::AXNode* node,
const ax::mojom::IntAttribute attr) {
const ui::AXNodeData& data = node->data();
for (size_t i = 0; i < data.int_attributes.size(); ++i) {
if (data.int_attributes[i].first == attr)
return data.int_attributes[i].second;
}
return -1;
}
// Convenience method to get the value of a particular AXNode
// boolean attribute.
bool CrossPlatformAccessibilityBrowserTest::GetBoolAttr(
const ui::AXNode* node,
const ax::mojom::BoolAttribute attr) {
const ui::AXNodeData& data = node->data();
for (size_t i = 0; i < data.bool_attributes.size(); ++i) {
if (data.bool_attributes[i].first == attr)
return data.bool_attributes[i].second;
}
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 ui::AXTree& tree = GetAXTree();
const ui::AXNode* root = tree.root();
// Check properties of thet tree.
EXPECT_STREQ(url_str, tree.data().url.c_str());
EXPECT_STREQ("Accessibility Test", tree.data().title.c_str());
EXPECT_STREQ("html", tree.data().doctype.c_str());
EXPECT_STREQ("text/html", tree.data().mimetype.c_str());
// Check properties of the root element of the tree.
EXPECT_STREQ("Accessibility Test",
GetAttr(root, ax::mojom::StringAttribute::kName).c_str());
EXPECT_EQ(ax::mojom::Role::kRootWebArea, root->data().role);
// Check properties of the BODY element.
ASSERT_EQ(1, root->child_count());
const ui::AXNode* body = root->ChildAtIndex(0);
EXPECT_EQ(ax::mojom::Role::kGroup, body->data().role);
EXPECT_STREQ("body",
GetAttr(body, ax::mojom::StringAttribute::kHtmlTag).c_str());
EXPECT_STREQ("block",
GetAttr(body, ax::mojom::StringAttribute::kDisplay).c_str());
// Check properties of the two children of the BODY element.
ASSERT_EQ(2, body->child_count());
const ui::AXNode* button = body->ChildAtIndex(0);
EXPECT_EQ(ax::mojom::Role::kButton, button->data().role);
EXPECT_STREQ("input",
GetAttr(button, ax::mojom::StringAttribute::kHtmlTag).c_str());
EXPECT_STREQ("push",
GetAttr(button, ax::mojom::StringAttribute::kName).c_str());
EXPECT_STREQ("inline-block",
GetAttr(button, ax::mojom::StringAttribute::kDisplay).c_str());
ASSERT_EQ(2U, button->data().html_attributes.size());
EXPECT_STREQ("type", button->data().html_attributes[0].first.c_str());
EXPECT_STREQ("button", button->data().html_attributes[0].second.c_str());
EXPECT_STREQ("value", button->data().html_attributes[1].first.c_str());
EXPECT_STREQ("push", button->data().html_attributes[1].second.c_str());
const ui::AXNode* checkbox = body->ChildAtIndex(1);
EXPECT_EQ(ax::mojom::Role::kCheckBox, checkbox->data().role);
EXPECT_STREQ("input",
GetAttr(checkbox, ax::mojom::StringAttribute::kHtmlTag).c_str());
EXPECT_STREQ("inline-block",
GetAttr(checkbox, ax::mojom::StringAttribute::kDisplay).c_str());
ASSERT_EQ(1U, checkbox->data().html_attributes.size());
EXPECT_STREQ("type", checkbox->data().html_attributes[0].first.c_str());
EXPECT_STREQ("checkbox", checkbox->data().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 ui::AXTree& tree = GetAXTree();
const ui::AXNode* root = tree.root();
ASSERT_EQ(1, root->child_count());
const ui::AXNode* body = root->ChildAtIndex(0);
ASSERT_EQ(1, body->child_count());
const ui::AXNode* text = body->ChildAtIndex(0);
EXPECT_EQ(ax::mojom::Role::kTextField, text->data().role);
EXPECT_STREQ("input",
GetAttr(text, ax::mojom::StringAttribute::kHtmlTag).c_str());
EXPECT_EQ(0, GetIntAttr(text, ax::mojom::IntAttribute::kTextSelStart));
EXPECT_EQ(0, GetIntAttr(text, ax::mojom::IntAttribute::kTextSelEnd));
EXPECT_STREQ("Hello, world.",
GetAttr(text, ax::mojom::StringAttribute::kValue).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 ui::AXTree& tree = GetAXTree();
const ui::AXNode* root = tree.root();
ASSERT_EQ(1, root->child_count());
const ui::AXNode* body = root->ChildAtIndex(0);
ASSERT_EQ(1, body->child_count());
const ui::AXNode* text = body->ChildAtIndex(0);
EXPECT_EQ(ax::mojom::Role::kTextField, text->data().role);
EXPECT_STREQ("input",
GetAttr(text, ax::mojom::StringAttribute::kHtmlTag).c_str());
EXPECT_EQ(0, GetIntAttr(text, ax::mojom::IntAttribute::kTextSelStart));
EXPECT_EQ(13, GetIntAttr(text, ax::mojom::IntAttribute::kTextSelEnd));
EXPECT_STREQ("Hello, world.",
GetAttr(text, ax::mojom::StringAttribute::kValue).c_str());
}
IN_PROC_BROWSER_TEST_F(CrossPlatformAccessibilityBrowserTest,
MultipleInheritanceAccessibility2) {
// Here's a html snippet where Blink 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 ui::AXTree& tree = GetAXTree();
const ui::AXNode* root = tree.root();
base::hash_set<int> ids;
RecursiveAssertUniqueIds(root, &ids);
}
// TODO(dmazzoni): Needs to be rebaselined. http://crbug.com/347464
IN_PROC_BROWSER_TEST_F(CrossPlatformAccessibilityBrowserTest,
DISABLED_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 ui::AXTree& tree = GetAXTree();
const ui::AXNode* root = tree.root();
ASSERT_EQ(1, root->child_count());
const ui::AXNode* body = root->ChildAtIndex(0);
ASSERT_EQ(3, body->child_count());
const ui::AXNode* button1 = body->ChildAtIndex(0);
EXPECT_EQ(ax::mojom::Role::kButton, button1->data().role);
EXPECT_STREQ("Button 1",
GetAttr(button1, ax::mojom::StringAttribute::kName).c_str());
const ui::AXNode* iframe = body->ChildAtIndex(1);
EXPECT_STREQ("iframe",
GetAttr(iframe, ax::mojom::StringAttribute::kHtmlTag).c_str());
ASSERT_EQ(1, iframe->child_count());
const ui::AXNode* sub_document = iframe->ChildAtIndex(0);
EXPECT_EQ(ax::mojom::Role::kWebArea, sub_document->data().role);
ASSERT_EQ(1, sub_document->child_count());
const ui::AXNode* sub_body = sub_document->ChildAtIndex(0);
ASSERT_EQ(1, sub_body->child_count());
const ui::AXNode* button2 = sub_body->ChildAtIndex(0);
EXPECT_EQ(ax::mojom::Role::kButton, button2->data().role);
EXPECT_STREQ("Button 2",
GetAttr(button2, ax::mojom::StringAttribute::kName).c_str());
const ui::AXNode* button3 = body->ChildAtIndex(2);
EXPECT_EQ(ax::mojom::Role::kButton, button3->data().role);
EXPECT_STREQ("Button 3",
GetAttr(button3, ax::mojom::StringAttribute::kName).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 ui::AXTree& tree = GetAXTree();
const ui::AXNode* root = tree.root();
base::hash_set<int> ids;
RecursiveAssertUniqueIds(root, &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 ui::AXTree& tree = GetAXTree();
const ui::AXNode* root = tree.root();
const ui::AXNode* table = root->ChildAtIndex(0);
EXPECT_EQ(ax::mojom::Role::kTable, table->data().role);
ASSERT_GE(table->child_count(), 2);
EXPECT_EQ(ax::mojom::Role::kRow, table->ChildAtIndex(0)->data().role);
EXPECT_EQ(ax::mojom::Role::kRow, table->ChildAtIndex(1)->data().role);
EXPECT_EQ(3, GetIntAttr(table, ax::mojom::IntAttribute::kTableColumnCount));
EXPECT_EQ(2, GetIntAttr(table, ax::mojom::IntAttribute::kTableRowCount));
const ui::AXNode* cell1 = table->ChildAtIndex(0)->ChildAtIndex(0);
const ui::AXNode* cell2 = table->ChildAtIndex(0)->ChildAtIndex(1);
const ui::AXNode* cell3 = table->ChildAtIndex(1)->ChildAtIndex(0);
const ui::AXNode* cell4 = table->ChildAtIndex(1)->ChildAtIndex(1);
EXPECT_EQ(0,
GetIntAttr(cell1, ax::mojom::IntAttribute::kTableCellColumnIndex));
EXPECT_EQ(0, GetIntAttr(cell1, ax::mojom::IntAttribute::kTableCellRowIndex));
EXPECT_EQ(2,
GetIntAttr(cell1, ax::mojom::IntAttribute::kTableCellColumnSpan));
EXPECT_EQ(1, GetIntAttr(cell1, ax::mojom::IntAttribute::kTableCellRowSpan));
EXPECT_EQ(2,
GetIntAttr(cell2, ax::mojom::IntAttribute::kTableCellColumnIndex));
EXPECT_EQ(1,
GetIntAttr(cell2, ax::mojom::IntAttribute::kTableCellColumnSpan));
EXPECT_EQ(0,
GetIntAttr(cell3, ax::mojom::IntAttribute::kTableCellColumnIndex));
EXPECT_EQ(1,
GetIntAttr(cell3, ax::mojom::IntAttribute::kTableCellColumnSpan));
EXPECT_EQ(1,
GetIntAttr(cell4, ax::mojom::IntAttribute::kTableCellColumnIndex));
EXPECT_EQ(2,
GetIntAttr(cell4, ax::mojom::IntAttribute::kTableCellColumnSpan));
}
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 ui::AXTree& tree = GetAXTree();
const ui::AXNode* root = tree.root();
ASSERT_EQ(1, root->child_count());
const ui::AXNode* textbox = root->ChildAtIndex(0);
EXPECT_TRUE(textbox->data().HasAction(ax::mojom::Action::kSetValue));
}
} // namespace content