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ax_tree_combiner_unittest.cc
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// Copyright 2016 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 "ui/accessibility/ax_tree_combiner.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/accessibility/ax_enums.mojom.h"
namespace ui {
TEST(CombineAXTreesTest, RenumberOneTree) {
AXTreeID tree_id_1 = AXTreeID::CreateNewAXTreeID();
AXTreeUpdate tree;
tree.has_tree_data = true;
tree.tree_data.tree_id = tree_id_1;
tree.root_id = 2;
tree.nodes.resize(3);
tree.nodes[0].id = 2;
tree.nodes[0].child_ids.push_back(4);
tree.nodes[0].child_ids.push_back(6);
tree.nodes[1].id = 4;
tree.nodes[2].id = 6;
AXTreeCombiner combiner;
combiner.AddTree(tree, true);
combiner.Combine();
const AXTreeUpdate& combined = combiner.combined();
EXPECT_EQ(1, combined.root_id);
ASSERT_EQ(3U, combined.nodes.size());
EXPECT_EQ(1, combined.nodes[0].id);
ASSERT_EQ(2U, combined.nodes[0].child_ids.size());
EXPECT_EQ(2, combined.nodes[0].child_ids[0]);
EXPECT_EQ(3, combined.nodes[0].child_ids[1]);
EXPECT_EQ(2, combined.nodes[1].id);
EXPECT_EQ(3, combined.nodes[2].id);
}
TEST(CombineAXTreesTest, EmbedChildTree) {
AXTreeID tree_id_1 = AXTreeID::CreateNewAXTreeID();
AXTreeID tree_id_2 = AXTreeID::CreateNewAXTreeID();
AXTreeUpdate parent_tree;
parent_tree.root_id = 1;
parent_tree.has_tree_data = true;
parent_tree.tree_data.tree_id = tree_id_1;
parent_tree.nodes.resize(3);
parent_tree.nodes[0].id = 1;
parent_tree.nodes[0].child_ids.push_back(2);
parent_tree.nodes[0].child_ids.push_back(3);
parent_tree.nodes[1].id = 2;
parent_tree.nodes[1].role = ax::mojom::Role::kButton;
parent_tree.nodes[2].id = 3;
parent_tree.nodes[2].role = ax::mojom::Role::kIframe;
parent_tree.nodes[2].AddChildTreeId(tree_id_2);
AXTreeUpdate child_tree;
child_tree.root_id = 1;
child_tree.has_tree_data = true;
child_tree.tree_data.parent_tree_id = tree_id_1;
child_tree.tree_data.tree_id = tree_id_2;
child_tree.nodes.resize(3);
child_tree.nodes[0].id = 1;
child_tree.nodes[0].child_ids.push_back(2);
child_tree.nodes[0].child_ids.push_back(3);
child_tree.nodes[1].id = 2;
child_tree.nodes[1].role = ax::mojom::Role::kCheckBox;
child_tree.nodes[2].id = 3;
child_tree.nodes[2].role = ax::mojom::Role::kRadioButton;
AXTreeCombiner combiner;
combiner.AddTree(parent_tree, true);
combiner.AddTree(child_tree, false);
combiner.Combine();
const AXTreeUpdate& combined = combiner.combined();
EXPECT_EQ(1, combined.root_id);
ASSERT_EQ(6U, combined.nodes.size());
EXPECT_EQ(1, combined.nodes[0].id);
ASSERT_EQ(2U, combined.nodes[0].child_ids.size());
EXPECT_EQ(2, combined.nodes[0].child_ids[0]);
EXPECT_EQ(3, combined.nodes[0].child_ids[1]);
EXPECT_EQ(2, combined.nodes[1].id);
EXPECT_EQ(ax::mojom::Role::kButton, combined.nodes[1].role);
EXPECT_EQ(3, combined.nodes[2].id);
EXPECT_EQ(ax::mojom::Role::kIframe, combined.nodes[2].role);
EXPECT_EQ(1U, combined.nodes[2].child_ids.size());
EXPECT_EQ(4, combined.nodes[2].child_ids[0]);
EXPECT_EQ(4, combined.nodes[3].id);
EXPECT_EQ(5, combined.nodes[4].id);
EXPECT_EQ(ax::mojom::Role::kCheckBox, combined.nodes[4].role);
EXPECT_EQ(6, combined.nodes[5].id);
EXPECT_EQ(ax::mojom::Role::kRadioButton, combined.nodes[5].role);
}
TEST(CombineAXTreesTest, MapAllIdAttributes) {
AXTreeID tree_id_1 = AXTreeID::CreateNewAXTreeID();
// This is a nonsensical accessibility tree, the goal is to make sure
// that all attributes that reference IDs of other nodes are remapped.
AXTreeUpdate tree;
tree.has_tree_data = true;
tree.tree_data.tree_id = tree_id_1;
tree.root_id = 11;
tree.nodes.resize(2);
tree.nodes[0].id = 11;
tree.nodes[0].child_ids.push_back(22);
tree.nodes[0].AddIntAttribute(ax::mojom::IntAttribute::kTableHeaderId, 22);
tree.nodes[0].AddIntAttribute(ax::mojom::IntAttribute::kTableRowHeaderId, 22);
tree.nodes[0].AddIntAttribute(ax::mojom::IntAttribute::kTableColumnHeaderId,
22);
tree.nodes[0].AddIntAttribute(ax::mojom::IntAttribute::kActivedescendantId,
22);
std::vector<AXNodeID> ids{22};
tree.nodes[0].AddIntListAttribute(
ax::mojom::IntListAttribute::kIndirectChildIds, ids);
tree.nodes[0].AddIntListAttribute(ax::mojom::IntListAttribute::kControlsIds,
ids);
tree.nodes[0].AddIntListAttribute(
ax::mojom::IntListAttribute::kDescribedbyIds, ids);
tree.nodes[0].AddIntListAttribute(ax::mojom::IntListAttribute::kFlowtoIds,
ids);
tree.nodes[0].AddIntListAttribute(ax::mojom::IntListAttribute::kLabelledbyIds,
ids);
tree.nodes[1].id = 22;
AXTreeCombiner combiner;
combiner.AddTree(tree, true);
combiner.Combine();
const AXTreeUpdate& combined = combiner.combined();
EXPECT_EQ(1, combined.root_id);
ASSERT_EQ(2U, combined.nodes.size());
EXPECT_EQ(1, combined.nodes[0].id);
ASSERT_EQ(1U, combined.nodes[0].child_ids.size());
EXPECT_EQ(2, combined.nodes[0].child_ids[0]);
EXPECT_EQ(2, combined.nodes[1].id);
EXPECT_EQ(2, combined.nodes[0].GetIntAttribute(
ax::mojom::IntAttribute::kTableHeaderId));
EXPECT_EQ(2, combined.nodes[0].GetIntAttribute(
ax::mojom::IntAttribute::kTableRowHeaderId));
EXPECT_EQ(2, combined.nodes[0].GetIntAttribute(
ax::mojom::IntAttribute::kTableColumnHeaderId));
EXPECT_EQ(2, combined.nodes[0].GetIntAttribute(
ax::mojom::IntAttribute::kActivedescendantId));
EXPECT_EQ(2, combined.nodes[0].GetIntListAttribute(
ax::mojom::IntListAttribute::kIndirectChildIds)[0]);
EXPECT_EQ(2, combined.nodes[0].GetIntListAttribute(
ax::mojom::IntListAttribute::kControlsIds)[0]);
EXPECT_EQ(2, combined.nodes[0].GetIntListAttribute(
ax::mojom::IntListAttribute::kDescribedbyIds)[0]);
EXPECT_EQ(2, combined.nodes[0].GetIntListAttribute(
ax::mojom::IntListAttribute::kFlowtoIds)[0]);
EXPECT_EQ(2, combined.nodes[0].GetIntListAttribute(
ax::mojom::IntListAttribute::kLabelledbyIds)[0]);
}
TEST(CombineAXTreesTest, FocusedTree) {
AXTreeID tree_id_1 = AXTreeID::CreateNewAXTreeID();
AXTreeID tree_id_2 = AXTreeID::CreateNewAXTreeID();
AXTreeUpdate parent_tree;
parent_tree.has_tree_data = true;
parent_tree.tree_data.tree_id = tree_id_1;
parent_tree.tree_data.focused_tree_id = tree_id_2;
parent_tree.tree_data.focus_id = 2;
parent_tree.root_id = 1;
parent_tree.nodes.resize(3);
parent_tree.nodes[0].id = 1;
parent_tree.nodes[0].child_ids.push_back(2);
parent_tree.nodes[0].child_ids.push_back(3);
parent_tree.nodes[1].id = 2;
parent_tree.nodes[1].role = ax::mojom::Role::kButton;
parent_tree.nodes[2].id = 3;
parent_tree.nodes[2].role = ax::mojom::Role::kIframe;
parent_tree.nodes[2].AddChildTreeId(tree_id_2);
AXTreeUpdate child_tree;
child_tree.has_tree_data = true;
child_tree.tree_data.parent_tree_id = tree_id_1;
child_tree.tree_data.tree_id = tree_id_2;
child_tree.tree_data.focus_id = 3;
child_tree.root_id = 1;
child_tree.nodes.resize(3);
child_tree.nodes[0].id = 1;
child_tree.nodes[0].child_ids.push_back(2);
child_tree.nodes[0].child_ids.push_back(3);
child_tree.nodes[1].id = 2;
child_tree.nodes[1].role = ax::mojom::Role::kCheckBox;
child_tree.nodes[2].id = 3;
child_tree.nodes[2].role = ax::mojom::Role::kRadioButton;
AXTreeCombiner combiner;
combiner.AddTree(parent_tree, true);
combiner.AddTree(child_tree, false);
combiner.Combine();
const AXTreeUpdate& combined = combiner.combined();
ASSERT_EQ(6U, combined.nodes.size());
EXPECT_EQ(6, combined.tree_data.focus_id);
}
TEST(CombineAXTreesTest, EmptyTree) {
AXTreeUpdate tree;
AXTreeCombiner combiner;
combiner.AddTree(tree, true);
combiner.Combine();
const AXTreeUpdate& combined = combiner.combined();
ASSERT_EQ(0U, combined.nodes.size());
}
} // namespace ui