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ax_event_generator_unittest.cc
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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/accessibility/ax_event_generator.h"
#include "testing/gmock/include/gmock/gmock-matchers.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/accessibility/ax_enum_util.h"
#include "ui/accessibility/ax_enums.mojom.h"
#include "ui/accessibility/ax_node.h"
#include "ui/accessibility/ax_serializable_tree.h"
#include "ui/accessibility/ax_tree.h"
#include "ui/accessibility/ax_tree_serializer.h"
namespace ui {
// Required by gmock to print TargetedEvent in a human-readable way.
void PrintTo(const AXEventGenerator::TargetedEvent& event, std::ostream* os) {
*os << event.event_params.event << " on " << event.node_id;
}
namespace {
using testing::IsEmpty;
using testing::IsSupersetOf;
using testing::Matches;
using testing::PrintToString;
using testing::UnorderedElementsAre;
// TODO(gilmanmh): Improve printing of test failure messages when the expected
// values are themselves matchers (e.g. Not(3)).
MATCHER_P2(HasEventAtNode,
expected_event_type,
expected_node_id,
std::string(negation ? "does not have" : "has") + " " +
PrintToString(expected_event_type) + " on " +
PrintToString(expected_node_id)) {
const auto& event = arg;
return Matches(expected_event_type)(event.event_params.event) &&
Matches(expected_node_id)(event.node_id);
}
} // namespace
TEST(AXEventGeneratorTest, IterateThroughEmptyEventSets) {
// The event map contains the following:
// node1, <>
// node2, <>
// node3, <IGNORED_CHANGED, SUBTREE_CREATED, NAME_CHANGED>
// node4, <>
// node5, <>
// node6, <>
// node7, <IGNORED_CHANGED>
// node8, <>
// node9, <>
// Verify AXEventGenerator can iterate through empty event sets, and returning
// the correct events.
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(9);
initial_state.nodes[0].id = 1;
initial_state.nodes[0].child_ids.push_back(2);
initial_state.nodes[1].id = 2;
initial_state.nodes[1].child_ids.push_back(3);
initial_state.nodes[2].id = 3;
initial_state.nodes[2].child_ids.push_back(4);
initial_state.nodes[3].id = 4;
initial_state.nodes[3].child_ids.push_back(5);
initial_state.nodes[4].id = 5;
initial_state.nodes[4].child_ids.push_back(6);
initial_state.nodes[5].id = 6;
initial_state.nodes[5].child_ids.push_back(7);
initial_state.nodes[6].id = 7;
initial_state.nodes[6].child_ids.push_back(8);
initial_state.nodes[7].id = 8;
initial_state.nodes[7].child_ids.push_back(9);
initial_state.nodes[8].id = 9;
initial_state.has_tree_data = true;
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
AXNode* node1 = tree.root();
AXNode* node2 = tree.GetFromId(2);
AXNode* node3 = tree.GetFromId(3);
AXNode* node4 = tree.GetFromId(4);
AXNode* node5 = tree.GetFromId(5);
AXNode* node6 = tree.GetFromId(6);
AXNode* node7 = tree.GetFromId(7);
AXNode* node8 = tree.GetFromId(8);
AXNode* node9 = tree.GetFromId(9);
// Node1 contains no event.
std::set<AXEventGenerator::EventParams> node1_events;
// Node2 contains no event.
std::set<AXEventGenerator::EventParams> node2_events;
// Node3 contains IGNORED_CHANGED, SUBTREE_CREATED, NAME_CHANGED.
std::set<AXEventGenerator::EventParams> node3_events;
node3_events.emplace(AXEventGenerator::Event::IGNORED_CHANGED,
ax::mojom::EventFrom::kNone, ax::mojom::Action::kNone,
std::vector<AXEventIntent>());
node3_events.emplace(AXEventGenerator::Event::SUBTREE_CREATED,
ax::mojom::EventFrom::kNone, ax::mojom::Action::kNone,
std::vector<AXEventIntent>());
node3_events.emplace(AXEventGenerator::Event::NAME_CHANGED,
ax::mojom::EventFrom::kNone, ax::mojom::Action::kNone,
std::vector<AXEventIntent>());
// Node4 contains no event.
std::set<AXEventGenerator::EventParams> node4_events;
// Node5 contains no event.
std::set<AXEventGenerator::EventParams> node5_events;
// Node6 contains no event.
std::set<AXEventGenerator::EventParams> node6_events;
// Node7 contains IGNORED_CHANGED.
std::set<AXEventGenerator::EventParams> node7_events;
node7_events.emplace(AXEventGenerator::Event::IGNORED_CHANGED,
ax::mojom::EventFrom::kNone, ax::mojom::Action::kNone,
std::vector<AXEventIntent>());
// Node8 contains no event.
std::set<AXEventGenerator::EventParams> node8_events;
// Node9 contains no event.
std::set<AXEventGenerator::EventParams> node9_events;
event_generator.AddEventsForTesting(*node1, node1_events);
event_generator.AddEventsForTesting(*node2, node2_events);
event_generator.AddEventsForTesting(*node3, node3_events);
event_generator.AddEventsForTesting(*node4, node4_events);
event_generator.AddEventsForTesting(*node5, node5_events);
event_generator.AddEventsForTesting(*node6, node6_events);
event_generator.AddEventsForTesting(*node7, node7_events);
event_generator.AddEventsForTesting(*node8, node8_events);
event_generator.AddEventsForTesting(*node9, node9_events);
std::map<AXNode*, std::set<AXEventGenerator::Event>> expected_event_map;
expected_event_map[node3] = {AXEventGenerator::Event::IGNORED_CHANGED,
AXEventGenerator::Event::SUBTREE_CREATED,
AXEventGenerator::Event::NAME_CHANGED};
expected_event_map[node7] = {AXEventGenerator::Event::IGNORED_CHANGED};
for (const auto& targeted_event : event_generator) {
AXNode* node = tree.GetFromId(targeted_event.node_id);
ASSERT_NE(nullptr, node);
auto map_iter = expected_event_map.find(node);
ASSERT_NE(map_iter, expected_event_map.end())
<< "|expected_event_map| contains node_id=" << targeted_event.node_id
<< "\nExpected: true"
<< "\nActual: " << std::boolalpha
<< (map_iter != expected_event_map.end());
std::set<AXEventGenerator::Event>& node_events = map_iter->second;
auto event_iter = node_events.find(targeted_event.event_params.event);
ASSERT_NE(event_iter, node_events.end())
<< "Event=" << targeted_event.event_params.event
<< ", on node_id=" << targeted_event.node_id
<< " NOT found in |expected_event_map|";
// If the event from |event_generator| is found in |expected_event_map|,
// we want to delete the corresponding entry in |expected_event_map|.
node_events.erase(event_iter);
if (node_events.empty())
expected_event_map.erase(map_iter);
}
// We should expect |expected_event_map_| to be empty, when all the generated
// events match expected events.
EXPECT_TRUE(expected_event_map.empty());
}
TEST(AXEventGeneratorTest, DocumentSelectionChanged) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(1);
initial_state.nodes[0].id = 1;
initial_state.has_tree_data = true;
initial_state.tree_data.sel_focus_object_id = 1;
initial_state.tree_data.sel_focus_offset = 1;
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update = initial_state;
update.tree_data.sel_focus_offset = 2;
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(event_generator,
UnorderedElementsAre(HasEventAtNode(
AXEventGenerator::Event::DOCUMENT_SELECTION_CHANGED, 1)));
}
TEST(AXEventGeneratorTest, DocumentTitleChanged) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(1);
initial_state.nodes[0].id = 1;
initial_state.has_tree_data = true;
initial_state.tree_data.title = "Before";
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update = initial_state;
update.tree_data.title = "After";
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(event_generator,
UnorderedElementsAre(HasEventAtNode(
AXEventGenerator::Event::DOCUMENT_TITLE_CHANGED, 1)));
}
TEST(AXEventGeneratorTest, ExpandedAndRowCount) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(4);
initial_state.nodes[0].id = 1;
initial_state.nodes[0].role = ax::mojom::Role::kRootWebArea;
initial_state.nodes[0].child_ids.push_back(2);
initial_state.nodes[0].child_ids.push_back(4);
initial_state.nodes[1].id = 2;
initial_state.nodes[1].role = ax::mojom::Role::kTable;
initial_state.nodes[1].child_ids.push_back(3);
initial_state.nodes[2].id = 3;
initial_state.nodes[2].role = ax::mojom::Role::kRow;
initial_state.nodes[3].id = 4;
initial_state.nodes[3].role = ax::mojom::Role::kComboBoxSelect;
initial_state.nodes[3].AddState(ax::mojom::State::kExpanded);
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update = initial_state;
update.nodes[2].AddState(ax::mojom::State::kExpanded);
update.nodes[3].RemoveState(ax::mojom::State::kExpanded);
update.nodes[3].AddState(ax::mojom::State::kCollapsed);
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(
event_generator,
UnorderedElementsAre(
HasEventAtNode(AXEventGenerator::Event::COLLAPSED, 4),
HasEventAtNode(AXEventGenerator::Event::EXPANDED, 3),
HasEventAtNode(AXEventGenerator::Event::ROW_COUNT_CHANGED, 2),
HasEventAtNode(AXEventGenerator::Event::STATE_CHANGED, 3),
HasEventAtNode(AXEventGenerator::Event::WIN_IACCESSIBLE_STATE_CHANGED,
3),
HasEventAtNode(AXEventGenerator::Event::STATE_CHANGED, 4),
HasEventAtNode(AXEventGenerator::Event::WIN_IACCESSIBLE_STATE_CHANGED,
4)));
}
TEST(AXEventGeneratorTest, SelectedAndSelectedChildren) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(4);
initial_state.nodes[0].id = 1;
initial_state.nodes[0].role = ax::mojom::Role::kRootWebArea;
initial_state.nodes[0].child_ids.push_back(2);
initial_state.nodes[0].child_ids.push_back(4);
initial_state.nodes[1].id = 2;
initial_state.nodes[1].role = ax::mojom::Role::kMenu;
initial_state.nodes[1].child_ids.push_back(3);
initial_state.nodes[2].id = 3;
initial_state.nodes[2].role = ax::mojom::Role::kMenuItem;
initial_state.nodes[3].id = 4;
initial_state.nodes[3].role = ax::mojom::Role::kListBoxOption;
initial_state.nodes[3].AddBoolAttribute(ax::mojom::BoolAttribute::kSelected,
true);
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update = initial_state;
update.nodes[2].AddBoolAttribute(ax::mojom::BoolAttribute::kSelected, true);
update.nodes.pop_back();
update.nodes.emplace_back();
update.nodes[3].id = 4;
update.nodes[3].role = ax::mojom::Role::kListBoxOption;
update.nodes[3].AddBoolAttribute(ax::mojom::BoolAttribute::kSelected, false);
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(
event_generator,
UnorderedElementsAre(
HasEventAtNode(AXEventGenerator::Event::SELECTED_CHILDREN_CHANGED, 2),
HasEventAtNode(AXEventGenerator::Event::SELECTED_CHANGED, 3),
HasEventAtNode(AXEventGenerator::Event::WIN_IACCESSIBLE_STATE_CHANGED,
3),
HasEventAtNode(AXEventGenerator::Event::SELECTED_CHANGED, 4),
HasEventAtNode(AXEventGenerator::Event::WIN_IACCESSIBLE_STATE_CHANGED,
4)));
}
TEST(AXEventGeneratorTest, SelectedAndSelectedValueChanged) {
// This test is based on the following HTML snippet which produces the below
// simplified accessibility tree.
//
// <select>
// <option selected>Item 1</option>
// <option>Item 2</option>
// </select>
// <select size="2">
// <option>Item 1</option>
// <option selected>Item 2</option>
// </select>
//
// kRootWebArea
// ++kComboBoxSelect value="Item 1"
// ++++kMenuListPopup invisible
// ++++++kMenuListOption name="Item 1" selected=true
// ++++++kMenuListOption name="Item 2" selected=false
// ++kListBox value="Item 2"
// ++++kListBoxOption name="Item 1" selected=false
// ++++kListBoxOption name="Item 2" selected=true
AXNodeData root;
root.id = 1;
root.role = ax::mojom::Role::kRootWebArea;
AXNodeData popup_button;
popup_button.id = 2;
popup_button.role = ax::mojom::Role::kComboBoxSelect;
popup_button.SetValue("Item 1");
AXNodeData menu_list_popup;
menu_list_popup.id = 3;
menu_list_popup.role = ax::mojom::Role::kMenuListPopup;
menu_list_popup.AddState(ax::mojom::State::kInvisible);
AXNodeData menu_list_option_1;
menu_list_option_1.id = 4;
menu_list_option_1.role = ax::mojom::Role::kMenuListOption;
menu_list_option_1.SetName("Item 1");
menu_list_option_1.AddBoolAttribute(ax::mojom::BoolAttribute::kSelected,
true);
AXNodeData menu_list_option_2;
menu_list_option_2.id = 5;
menu_list_option_2.role = ax::mojom::Role::kMenuListOption;
menu_list_option_2.SetName("Item 2");
AXNodeData list_box;
list_box.id = 6;
list_box.role = ax::mojom::Role::kListBox;
list_box.SetValue("Item 2");
AXNodeData list_box_option_1;
list_box_option_1.id = 7;
list_box_option_1.role = ax::mojom::Role::kListBoxOption;
list_box_option_1.SetName("Item 1");
AXNodeData list_box_option_2;
list_box_option_2.id = 8;
list_box_option_2.role = ax::mojom::Role::kRootWebArea;
list_box_option_2.SetName("Item 2");
list_box_option_2.AddBoolAttribute(ax::mojom::BoolAttribute::kSelected, true);
popup_button.child_ids = {menu_list_popup.id};
menu_list_popup.child_ids = {menu_list_option_1.id, menu_list_option_2.id};
list_box.child_ids = {list_box_option_1.id, list_box_option_2.id};
root.child_ids = {popup_button.id, list_box.id};
AXTreeUpdate initial_state;
initial_state.root_id = root.id;
initial_state.nodes = {root,
popup_button,
menu_list_popup,
menu_list_option_1,
menu_list_option_2,
list_box,
list_box_option_1,
list_box_option_2};
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
popup_button.SetValue("Item 2");
menu_list_option_1.RemoveBoolAttribute(ax::mojom::BoolAttribute::kSelected);
menu_list_option_2.AddBoolAttribute(ax::mojom::BoolAttribute::kSelected,
true);
list_box.SetValue("Item 1");
list_box_option_1.AddBoolAttribute(ax::mojom::BoolAttribute::kSelected, true);
list_box_option_2.RemoveBoolAttribute(ax::mojom::BoolAttribute::kSelected);
AXTreeUpdate update;
update.nodes = {popup_button, menu_list_option_1, menu_list_option_2,
list_box, list_box_option_1, list_box_option_2};
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(
event_generator,
IsSupersetOf(
{HasEventAtNode(AXEventGenerator::Event::SELECTED_VALUE_CHANGED,
popup_button.id),
HasEventAtNode(AXEventGenerator::Event::SELECTED_CHANGED,
menu_list_option_1.id),
HasEventAtNode(AXEventGenerator::Event::SELECTED_CHANGED,
menu_list_option_2.id),
HasEventAtNode(AXEventGenerator::Event::SELECTED_VALUE_CHANGED,
list_box.id),
HasEventAtNode(AXEventGenerator::Event::SELECTED_CHANGED,
list_box_option_1.id),
HasEventAtNode(AXEventGenerator::Event::SELECTED_CHANGED,
list_box_option_2.id)}));
}
TEST(AXEventGeneratorTest, SelectionInTextFieldChanged) {
AXNodeData root;
root.id = 1;
root.role = ax::mojom::Role::kRootWebArea;
AXNodeData text_field;
text_field.id = 2;
text_field.role = ax::mojom::Role::kTextField;
text_field.SetValue("Testing");
text_field.AddState(ax::mojom::State::kEditable);
root.child_ids = {text_field.id};
AXTreeUpdate initial_state;
initial_state.root_id = root.id;
initial_state.nodes = {root, text_field};
AXTreeData tree_data;
tree_data.sel_anchor_object_id = text_field.id;
tree_data.sel_anchor_offset = 0;
tree_data.sel_focus_object_id = text_field.id;
tree_data.sel_focus_offset = 0;
initial_state.tree_data = tree_data;
initial_state.has_tree_data = true;
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
{
tree_data.sel_anchor_object_id = text_field.id;
tree_data.sel_anchor_offset = 0;
tree_data.sel_focus_object_id = text_field.id;
tree_data.sel_focus_offset = 2;
AXTreeUpdate update;
update.tree_data = tree_data;
update.has_tree_data = true;
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(
event_generator,
UnorderedElementsAre(
HasEventAtNode(AXEventGenerator::Event::DOCUMENT_SELECTION_CHANGED,
root.id),
HasEventAtNode(AXEventGenerator::Event::TEXT_SELECTION_CHANGED,
text_field.id)));
}
event_generator.ClearEvents();
{
// A selection that does not include a text field in it should not raise the
// "TEXT_SELECTION_CHANGED" event.
tree_data.sel_anchor_object_id = root.id;
tree_data.sel_anchor_offset = 0;
tree_data.sel_focus_object_id = root.id;
tree_data.sel_focus_offset = 0;
AXTreeUpdate update;
update.tree_data = tree_data;
update.has_tree_data = true;
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(
event_generator,
UnorderedElementsAre(HasEventAtNode(
AXEventGenerator::Event::DOCUMENT_SELECTION_CHANGED, root.id)));
}
event_generator.ClearEvents();
{
// A selection that spans more than one node but which nevertheless ends on
// a text field should still raise the "TEXT_SELECTION_CHANGED"
// event.
tree_data.sel_anchor_object_id = root.id;
tree_data.sel_anchor_offset = 0;
tree_data.sel_focus_object_id = text_field.id;
tree_data.sel_focus_offset = 2;
AXTreeUpdate update;
update.tree_data = tree_data;
update.has_tree_data = true;
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(
event_generator,
UnorderedElementsAre(
HasEventAtNode(AXEventGenerator::Event::DOCUMENT_SELECTION_CHANGED,
root.id),
HasEventAtNode(AXEventGenerator::Event::TEXT_SELECTION_CHANGED,
text_field.id)));
}
}
TEST(AXEventGeneratorTest, ValueInTextFieldChanged) {
AXNodeData text_field;
text_field.id = 1;
text_field.role = ax::mojom::Role::kTextField;
text_field.AddState(ax::mojom::State::kEditable);
text_field.SetValue("Before");
AXTreeUpdate initial_state;
initial_state.root_id = text_field.id;
initial_state.nodes = {text_field};
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
text_field.SetValue("After");
AXTreeUpdate update;
update.nodes = {text_field};
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(event_generator,
UnorderedElementsAre(HasEventAtNode(
AXEventGenerator::Event::VALUE_IN_TEXT_FIELD_CHANGED,
text_field.id)));
}
TEST(AXEventGeneratorTest, FloatValueChanged) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(1);
initial_state.nodes[0].id = 1;
initial_state.nodes[0].role = ax::mojom::Role::kSlider;
initial_state.nodes[0].AddFloatAttribute(
ax::mojom::FloatAttribute::kValueForRange, 1.0);
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update = initial_state;
update.nodes[0].float_attributes.clear();
update.nodes[0].AddFloatAttribute(ax::mojom::FloatAttribute::kValueForRange,
2.0);
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(event_generator,
UnorderedElementsAre(HasEventAtNode(
AXEventGenerator::Event::RANGE_VALUE_CHANGED, 1)));
}
TEST(AXEventGeneratorTest, InvalidStatusChanged) {
AXNodeData text_field;
text_field.id = 1;
text_field.role = ax::mojom::Role::kTextField;
text_field.AddState(ax::mojom::State::kEditable);
text_field.AddStringAttribute(ax::mojom::StringAttribute::kValue, "Text");
AXTreeUpdate initial_state;
initial_state.root_id = text_field.id;
initial_state.nodes = {text_field};
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update;
text_field.SetInvalidState(ax::mojom::InvalidState::kTrue);
update.nodes = {text_field};
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(event_generator,
UnorderedElementsAre(HasEventAtNode(
AXEventGenerator::Event::INVALID_STATUS_CHANGED, 1)));
}
TEST(AXEventGeneratorTest, AddLiveRegionAttribute) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(1);
initial_state.nodes[0].id = 1;
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update = initial_state;
update.nodes[0].AddStringAttribute(ax::mojom::StringAttribute::kLiveStatus,
"polite");
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(
event_generator,
UnorderedElementsAre(
HasEventAtNode(AXEventGenerator::Event::LIVE_STATUS_CHANGED, 1),
HasEventAtNode(AXEventGenerator::Event::LIVE_REGION_CREATED, 1)));
event_generator.ClearEvents();
update.nodes[0].AddStringAttribute(ax::mojom::StringAttribute::kLiveStatus,
"assertive");
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(event_generator,
UnorderedElementsAre(HasEventAtNode(
AXEventGenerator::Event::LIVE_STATUS_CHANGED, 1)));
event_generator.ClearEvents();
update.nodes[0].AddStringAttribute(ax::mojom::StringAttribute::kLiveStatus,
"off");
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(event_generator,
UnorderedElementsAre(HasEventAtNode(
AXEventGenerator::Event::LIVE_STATUS_CHANGED, 1)));
}
TEST(AXEventGeneratorTest, CheckedStateChanged) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(1);
initial_state.nodes[0].id = 1;
initial_state.nodes[0].role = ax::mojom::Role::kCheckBox;
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update = initial_state;
update.nodes[0].SetCheckedState(ax::mojom::CheckedState::kTrue);
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(
event_generator,
UnorderedElementsAre(
HasEventAtNode(AXEventGenerator::Event::CHECKED_STATE_CHANGED, 1),
HasEventAtNode(AXEventGenerator::Event::WIN_IACCESSIBLE_STATE_CHANGED,
1)));
}
TEST(AXEventGeneratorTest, ActiveDescendantChanged) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(3);
initial_state.nodes[0].id = 1;
initial_state.nodes[0].role = ax::mojom::Role::kListBox;
initial_state.nodes[0].child_ids.push_back(2);
initial_state.nodes[0].child_ids.push_back(3);
initial_state.nodes[0].AddIntAttribute(
ax::mojom::IntAttribute::kActivedescendantId, 2);
initial_state.nodes[1].id = 2;
initial_state.nodes[1].role = ax::mojom::Role::kListBoxOption;
initial_state.nodes[2].id = 3;
initial_state.nodes[2].role = ax::mojom::Role::kListBoxOption;
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update = initial_state;
update.nodes[0].int_attributes.clear();
update.nodes[0].AddIntAttribute(ax::mojom::IntAttribute::kActivedescendantId,
3);
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(
event_generator,
UnorderedElementsAre(
HasEventAtNode(AXEventGenerator::Event::ACTIVE_DESCENDANT_CHANGED, 1),
HasEventAtNode(AXEventGenerator::Event::RELATED_NODE_CHANGED, 1)));
}
TEST(AXEventGeneratorTest, CreateAlertAndLiveRegion) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(1);
initial_state.nodes[0].id = 1;
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update = initial_state;
update.nodes.resize(4);
update.nodes[0].child_ids.push_back(2);
update.nodes[0].child_ids.push_back(3);
update.nodes[0].child_ids.push_back(4);
update.nodes[1].id = 2;
update.nodes[1].AddStringAttribute(ax::mojom::StringAttribute::kLiveStatus,
"polite");
// Blink should automatically add aria-live="assertive" to elements with role
// kAlert, but we should fire an alert event regardless.
update.nodes[2].id = 3;
update.nodes[2].role = ax::mojom::Role::kAlert;
// Elements with role kAlertDialog will *not* usually have a live region
// status, but again, we should always fire an alert event.
update.nodes[3].id = 4;
update.nodes[3].role = ax::mojom::Role::kAlertDialog;
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(
event_generator,
UnorderedElementsAre(
HasEventAtNode(AXEventGenerator::Event::ALERT, 3),
HasEventAtNode(AXEventGenerator::Event::ALERT, 4),
HasEventAtNode(AXEventGenerator::Event::CHILDREN_CHANGED, 1),
HasEventAtNode(AXEventGenerator::Event::LIVE_REGION_CREATED, 2),
HasEventAtNode(AXEventGenerator::Event::SUBTREE_CREATED, 2),
HasEventAtNode(AXEventGenerator::Event::SUBTREE_CREATED, 3),
HasEventAtNode(AXEventGenerator::Event::SUBTREE_CREATED, 4)));
}
TEST(AXEventGeneratorTest, LiveRegionChanged) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(3);
initial_state.nodes[0].id = 1;
initial_state.nodes[0].AddStringAttribute(
ax::mojom::StringAttribute::kLiveStatus, "polite");
initial_state.nodes[0].AddStringAttribute(
ax::mojom::StringAttribute::kContainerLiveStatus, "polite");
initial_state.nodes[0].child_ids.push_back(2);
initial_state.nodes[0].child_ids.push_back(3);
initial_state.nodes[1].id = 2;
initial_state.nodes[1].role = ax::mojom::Role::kStaticText;
initial_state.nodes[1].AddStringAttribute(
ax::mojom::StringAttribute::kContainerLiveStatus, "polite");
initial_state.nodes[1].AddStringAttribute(ax::mojom::StringAttribute::kName,
"Before 1");
initial_state.nodes[2].id = 3;
initial_state.nodes[2].role = ax::mojom::Role::kStaticText;
initial_state.nodes[2].AddStringAttribute(
ax::mojom::StringAttribute::kContainerLiveStatus, "polite");
initial_state.nodes[2].AddStringAttribute(ax::mojom::StringAttribute::kName,
"Before 2");
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update = initial_state;
update.nodes[1].string_attributes.clear();
update.nodes[1].AddStringAttribute(
ax::mojom::StringAttribute::kContainerLiveStatus, "polite");
update.nodes[1].AddStringAttribute(ax::mojom::StringAttribute::kName,
"After 1");
update.nodes[2].string_attributes.clear();
update.nodes[2].AddStringAttribute(
ax::mojom::StringAttribute::kContainerLiveStatus, "polite");
update.nodes[2].AddStringAttribute(ax::mojom::StringAttribute::kName,
"After 2");
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(
event_generator,
UnorderedElementsAre(
HasEventAtNode(AXEventGenerator::Event::LIVE_REGION_CHANGED, 1),
HasEventAtNode(AXEventGenerator::Event::LIVE_REGION_NODE_CHANGED, 2),
HasEventAtNode(AXEventGenerator::Event::LIVE_REGION_NODE_CHANGED, 3),
HasEventAtNode(AXEventGenerator::Event::NAME_CHANGED, 2),
HasEventAtNode(AXEventGenerator::Event::NAME_CHANGED, 3)));
}
TEST(AXEventGeneratorTest, LiveRegionOnlyTextChanges) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(3);
initial_state.nodes[0].id = 1;
initial_state.nodes[0].AddStringAttribute(
ax::mojom::StringAttribute::kLiveStatus, "polite");
initial_state.nodes[0].AddStringAttribute(
ax::mojom::StringAttribute::kContainerLiveStatus, "polite");
initial_state.nodes[0].child_ids.push_back(2);
initial_state.nodes[0].child_ids.push_back(3);
initial_state.nodes[1].id = 2;
initial_state.nodes[1].role = ax::mojom::Role::kStaticText;
initial_state.nodes[1].AddStringAttribute(
ax::mojom::StringAttribute::kContainerLiveStatus, "polite");
initial_state.nodes[1].AddStringAttribute(ax::mojom::StringAttribute::kName,
"Before 1");
initial_state.nodes[2].id = 3;
initial_state.nodes[2].role = ax::mojom::Role::kStaticText;
initial_state.nodes[2].AddStringAttribute(
ax::mojom::StringAttribute::kContainerLiveStatus, "polite");
initial_state.nodes[2].AddStringAttribute(ax::mojom::StringAttribute::kName,
"Before 2");
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update = initial_state;
update.nodes[1].AddStringAttribute(ax::mojom::StringAttribute::kDescription,
"Description 1");
update.nodes[2].SetCheckedState(ax::mojom::CheckedState::kTrue);
// Note that we do NOT expect a LIVE_REGION_CHANGED event here, because
// the name did not change.
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(
event_generator,
UnorderedElementsAre(
HasEventAtNode(AXEventGenerator::Event::CHECKED_STATE_CHANGED, 3),
HasEventAtNode(AXEventGenerator::Event::WIN_IACCESSIBLE_STATE_CHANGED,
3),
HasEventAtNode(AXEventGenerator::Event::DESCRIPTION_CHANGED, 2)));
}
TEST(AXEventGeneratorTest, BusyLiveRegionChanged) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(3);
initial_state.nodes[0].id = 1;
initial_state.nodes[0].AddStringAttribute(
ax::mojom::StringAttribute::kLiveStatus, "polite");
initial_state.nodes[0].AddStringAttribute(
ax::mojom::StringAttribute::kContainerLiveStatus, "polite");
initial_state.nodes[0].AddBoolAttribute(ax::mojom::BoolAttribute::kBusy,
true);
initial_state.nodes[0].child_ids.push_back(2);
initial_state.nodes[0].child_ids.push_back(3);
initial_state.nodes[1].id = 2;
initial_state.nodes[1].role = ax::mojom::Role::kStaticText;
initial_state.nodes[1].AddStringAttribute(
ax::mojom::StringAttribute::kContainerLiveStatus, "polite");
initial_state.nodes[1].AddStringAttribute(ax::mojom::StringAttribute::kName,
"Before 1");
initial_state.nodes[2].id = 3;
initial_state.nodes[2].role = ax::mojom::Role::kStaticText;
initial_state.nodes[2].AddStringAttribute(
ax::mojom::StringAttribute::kContainerLiveStatus, "polite");
initial_state.nodes[2].AddStringAttribute(ax::mojom::StringAttribute::kName,
"Before 2");
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update = initial_state;
update.nodes[1].string_attributes.clear();
update.nodes[1].AddStringAttribute(
ax::mojom::StringAttribute::kContainerLiveStatus, "polite");
update.nodes[1].AddStringAttribute(ax::mojom::StringAttribute::kName,
"After 1");
update.nodes[2].string_attributes.clear();
update.nodes[2].AddStringAttribute(
ax::mojom::StringAttribute::kContainerLiveStatus, "polite");
update.nodes[2].AddStringAttribute(ax::mojom::StringAttribute::kName,
"After 2");
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(event_generator,
UnorderedElementsAre(
HasEventAtNode(AXEventGenerator::Event::NAME_CHANGED, 2),
HasEventAtNode(AXEventGenerator::Event::NAME_CHANGED, 3)));
}
TEST(AXEventGeneratorTest, RemoveAriaLiveOffFromChild) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(2);
initial_state.nodes[0].id = 1;
initial_state.nodes[1].id = 2;
initial_state.nodes[0].child_ids = {2};
initial_state.nodes[0].role = ax::mojom::Role::kGenericContainer;
initial_state.nodes[0].AddStringAttribute(ax::mojom::StringAttribute::kName,
"History");
initial_state.nodes[0].AddStringAttribute(
ax::mojom::StringAttribute::kLiveStatus, "polite");
initial_state.nodes[0].AddStringAttribute(
ax::mojom::StringAttribute::kContainerLiveStatus, "polite");
initial_state.nodes[1].role = ax::mojom::Role::kGenericContainer;
initial_state.nodes[1].AddStringAttribute(ax::mojom::StringAttribute::kName,
"New message");
initial_state.nodes[1].AddStringAttribute(
ax::mojom::StringAttribute::kLiveStatus, "off");
initial_state.nodes[1].AddStringAttribute(
ax::mojom::StringAttribute::kContainerLiveStatus, "polite");
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update = initial_state;
update.nodes[1].RemoveStringAttribute(
ax::mojom::StringAttribute::kLiveStatus);
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(
event_generator,
UnorderedElementsAre(
HasEventAtNode(AXEventGenerator::Event::LIVE_STATUS_CHANGED, 2),
HasEventAtNode(AXEventGenerator::Event::LIVE_REGION_CREATED, 2)));
}
TEST(AXEventGeneratorTest, AddChild) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(2);
initial_state.nodes[0].id = 1;
initial_state.nodes[0].child_ids.push_back(2);
initial_state.nodes[1].id = 2;
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update = initial_state;
update.nodes.resize(3);
update.nodes[0].child_ids.push_back(3);
update.nodes[2].id = 3;
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(event_generator,
UnorderedElementsAre(
HasEventAtNode(AXEventGenerator::Event::CHILDREN_CHANGED, 1),
HasEventAtNode(AXEventGenerator::Event::SUBTREE_CREATED, 3)));
}
TEST(AXEventGeneratorTest, RemoveChild) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(3);
initial_state.nodes[0].id = 1;
initial_state.nodes[0].child_ids.push_back(2);
initial_state.nodes[0].child_ids.push_back(3);
initial_state.nodes[1].id = 2;
initial_state.nodes[2].id = 3;
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update = initial_state;
update.nodes.resize(2);
update.nodes[0].child_ids.clear();
update.nodes[0].child_ids.push_back(2);
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(event_generator,
UnorderedElementsAre(HasEventAtNode(
AXEventGenerator::Event::CHILDREN_CHANGED, 1)));
}
TEST(AXEventGeneratorTest, ReorderChildren) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(3);
initial_state.nodes[0].id = 1;
initial_state.nodes[0].child_ids.push_back(2);
initial_state.nodes[0].child_ids.push_back(3);
initial_state.nodes[1].id = 2;
initial_state.nodes[2].id = 3;
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update = initial_state;
update.nodes[0].child_ids.clear();
update.nodes[0].child_ids.push_back(3);
update.nodes[0].child_ids.push_back(2);
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(event_generator,
UnorderedElementsAre(HasEventAtNode(
AXEventGenerator::Event::CHILDREN_CHANGED, 1)));
}
TEST(AXEventGeneratorTest, ScrollHorizontalPositionChanged) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(1);
initial_state.nodes[0].id = 1;
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update = initial_state;
update.nodes[0].AddIntAttribute(ax::mojom::IntAttribute::kScrollX, 10);
EXPECT_TRUE(tree.Unserialize(update));
EXPECT_THAT(
event_generator,
UnorderedElementsAre(HasEventAtNode(
AXEventGenerator::Event::SCROLL_HORIZONTAL_POSITION_CHANGED, 1)));
}
TEST(AXEventGeneratorTest, ScrollVerticalPositionChanged) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes.resize(1);
initial_state.nodes[0].id = 1;
AXTree tree(initial_state);
AXEventGenerator event_generator(&tree);
ASSERT_THAT(event_generator, IsEmpty());
AXTreeUpdate update = initial_state;
update.nodes[0].AddIntAttribute(ax::mojom::IntAttribute::kScrollY, 10);
ASSERT_TRUE(tree.Unserialize(update));
EXPECT_THAT(
event_generator,
UnorderedElementsAre(HasEventAtNode(
AXEventGenerator::Event::SCROLL_VERTICAL_POSITION_CHANGED, 1)));
}
TEST(AXEventGeneratorTest, TextAttributeChanged) {
AXTreeUpdate initial_state;
initial_state.root_id = 1;