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ax_range_unittest.cc
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ax_range_unittest.cc
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// Copyright 2019 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_range.h"
#include <memory>
#include <vector>
#include "base/strings/string16.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/accessibility/ax_enums.mojom.h"
#include "ui/accessibility/ax_node.h"
#include "ui/accessibility/ax_node_data.h"
#include "ui/accessibility/ax_node_position.h"
#include "ui/accessibility/ax_tree.h"
#include "ui/accessibility/ax_tree_id.h"
#include "ui/accessibility/ax_tree_update.h"
#include "ui/accessibility/platform/test_ax_node_wrapper.h"
#include "ui/accessibility/test_ax_tree_manager.h"
namespace ui {
using TestPositionInstance =
std::unique_ptr<AXPosition<AXNodePosition, AXNode>>;
using TestPositionRange = AXRange<AXPosition<AXNodePosition, AXNode>>;
namespace {
constexpr AXNode::AXID ROOT_ID = 1;
constexpr AXNode::AXID DIV1_ID = 2;
constexpr AXNode::AXID BUTTON_ID = 3;
constexpr AXNode::AXID DIV2_ID = 4;
constexpr AXNode::AXID CHECK_BOX1_ID = 5;
constexpr AXNode::AXID CHECK_BOX2_ID = 6;
constexpr AXNode::AXID TEXT_FIELD_ID = 7;
constexpr AXNode::AXID STATIC_TEXT1_ID = 8;
constexpr AXNode::AXID INLINE_BOX1_ID = 9;
constexpr AXNode::AXID LINE_BREAK1_ID = 10;
constexpr AXNode::AXID STATIC_TEXT2_ID = 11;
constexpr AXNode::AXID INLINE_BOX2_ID = 12;
constexpr AXNode::AXID LINE_BREAK2_ID = 13;
constexpr AXNode::AXID PARAGRAPH_ID = 14;
constexpr AXNode::AXID STATIC_TEXT3_ID = 15;
constexpr AXNode::AXID INLINE_BOX3_ID = 16;
class TestAXRangeScreenRectDelegate : public AXRangeScreenRectDelegate {
public:
explicit TestAXRangeScreenRectDelegate(TestAXTreeManager* tree_manager)
: tree_manager_(tree_manager) {}
virtual ~TestAXRangeScreenRectDelegate() = default;
TestAXRangeScreenRectDelegate(const TestAXRangeScreenRectDelegate& delegate) =
delete;
TestAXRangeScreenRectDelegate& operator=(
const TestAXRangeScreenRectDelegate& delegate) = delete;
gfx::Rect GetInnerTextRangeBoundsRect(
AXTreeID tree_id,
AXNode::AXID node_id,
int start_offset,
int end_offset,
AXOffscreenResult* offscreen_result) override {
if (tree_manager_->GetTreeID() != tree_id)
return gfx::Rect();
AXNode* node = tree_manager_->GetNodeFromTree(node_id);
if (!node)
return gfx::Rect();
TestAXNodeWrapper* wrapper =
TestAXNodeWrapper::GetOrCreate(tree_manager_->GetTree(), node);
return wrapper->GetInnerTextRangeBoundsRect(
start_offset, end_offset, AXCoordinateSystem::kScreen,
AXClippingBehavior::kClipped, offscreen_result);
}
gfx::Rect GetBoundsRect(AXTreeID tree_id,
AXNode::AXID node_id,
AXOffscreenResult* offscreen_result) override {
if (tree_manager_->GetTreeID() != tree_id)
return gfx::Rect();
AXNode* node = tree_manager_->GetNodeFromTree(node_id);
if (!node)
return gfx::Rect();
TestAXNodeWrapper* wrapper =
TestAXNodeWrapper::GetOrCreate(tree_manager_->GetTree(), node);
return wrapper->GetBoundsRect(AXCoordinateSystem::kScreen,
AXClippingBehavior::kClipped,
offscreen_result);
}
private:
TestAXTreeManager* const tree_manager_;
};
class AXRangeTest : public testing::Test, public TestAXTreeManager {
public:
const base::string16 EMPTY = base::ASCIIToUTF16("");
const base::string16 NEWLINE = base::ASCIIToUTF16("\n");
const base::string16 BUTTON = base::ASCIIToUTF16("Button");
const base::string16 LINE_1 = base::ASCIIToUTF16("Line 1");
const base::string16 LINE_2 = base::ASCIIToUTF16("Line 2");
const base::string16 TEXT_FIELD =
LINE_1.substr().append(NEWLINE).append(LINE_2).append(NEWLINE);
const base::string16 AFTER_LINE = base::ASCIIToUTF16("After");
const base::string16 ALL_TEXT =
BUTTON.substr().append(TEXT_FIELD).append(AFTER_LINE);
AXRangeTest() = default;
~AXRangeTest() override = default;
protected:
void SetUp() override;
AXNodeData root_;
AXNodeData div1_;
AXNodeData div2_;
AXNodeData button_;
AXNodeData check_box1_;
AXNodeData check_box2_;
AXNodeData text_field_;
AXNodeData line_break1_;
AXNodeData line_break2_;
AXNodeData static_text1_;
AXNodeData static_text2_;
AXNodeData static_text3_;
AXNodeData inline_box1_;
AXNodeData inline_box2_;
AXNodeData inline_box3_;
AXNodeData paragraph_;
private:
DISALLOW_COPY_AND_ASSIGN(AXRangeTest);
};
void AXRangeTest::SetUp() {
// Most tests use kSuppressCharacter behavior.
g_ax_embedded_object_behavior = AXEmbeddedObjectBehavior::kSuppressCharacter;
root_.id = ROOT_ID;
div1_.id = DIV1_ID;
div2_.id = DIV2_ID;
button_.id = BUTTON_ID;
check_box1_.id = CHECK_BOX1_ID;
check_box2_.id = CHECK_BOX2_ID;
text_field_.id = TEXT_FIELD_ID;
line_break1_.id = LINE_BREAK1_ID;
line_break2_.id = LINE_BREAK2_ID;
static_text1_.id = STATIC_TEXT1_ID;
static_text2_.id = STATIC_TEXT2_ID;
static_text3_.id = STATIC_TEXT3_ID;
inline_box1_.id = INLINE_BOX1_ID;
inline_box2_.id = INLINE_BOX2_ID;
inline_box3_.id = INLINE_BOX3_ID;
paragraph_.id = PARAGRAPH_ID;
root_.role = ax::mojom::Role::kDialog;
root_.AddState(ax::mojom::State::kFocusable);
root_.SetName(ALL_TEXT);
root_.relative_bounds.bounds = gfx::RectF(0, 0, 800, 600);
div1_.role = ax::mojom::Role::kGenericContainer;
div1_.AddBoolAttribute(ax::mojom::BoolAttribute::kIsLineBreakingObject, true);
div1_.child_ids.push_back(button_.id);
div1_.child_ids.push_back(div2_.id);
root_.child_ids.push_back(div1_.id);
button_.role = ax::mojom::Role::kButton;
button_.SetHasPopup(ax::mojom::HasPopup::kMenu);
button_.SetName(BUTTON);
button_.SetValue(BUTTON);
button_.relative_bounds.bounds = gfx::RectF(20, 20, 100, 30);
button_.AddIntAttribute(ax::mojom::IntAttribute::kNextOnLineId,
check_box1_.id);
div2_.role = ax::mojom::Role::kGenericContainer;
div2_.child_ids.push_back(check_box1_.id);
div2_.child_ids.push_back(check_box2_.id);
check_box1_.role = ax::mojom::Role::kCheckBox;
check_box1_.SetCheckedState(ax::mojom::CheckedState::kTrue);
check_box1_.SetName("Checkbox 1");
check_box1_.relative_bounds.bounds = gfx::RectF(120, 20, 30, 30);
check_box1_.AddIntAttribute(ax::mojom::IntAttribute::kPreviousOnLineId,
button_.id);
check_box1_.AddIntAttribute(ax::mojom::IntAttribute::kNextOnLineId,
check_box2_.id);
check_box2_.role = ax::mojom::Role::kCheckBox;
check_box2_.SetCheckedState(ax::mojom::CheckedState::kTrue);
check_box2_.SetName("Checkbox 2");
check_box2_.relative_bounds.bounds = gfx::RectF(150, 20, 30, 30);
check_box2_.AddIntAttribute(ax::mojom::IntAttribute::kPreviousOnLineId,
check_box1_.id);
text_field_.role = ax::mojom::Role::kTextField;
text_field_.AddState(ax::mojom::State::kEditable);
text_field_.SetValue(TEXT_FIELD);
text_field_.AddIntListAttribute(
ax::mojom::IntListAttribute::kCachedLineStarts,
std::vector<int32_t>{0, 7});
text_field_.child_ids.push_back(static_text1_.id);
text_field_.child_ids.push_back(line_break1_.id);
text_field_.child_ids.push_back(static_text2_.id);
text_field_.child_ids.push_back(line_break2_.id);
root_.child_ids.push_back(text_field_.id);
static_text1_.role = ax::mojom::Role::kStaticText;
static_text1_.AddState(ax::mojom::State::kEditable);
static_text1_.SetName(LINE_1);
static_text1_.child_ids.push_back(inline_box1_.id);
inline_box1_.role = ax::mojom::Role::kInlineTextBox;
inline_box1_.AddState(ax::mojom::State::kEditable);
inline_box1_.SetName(LINE_1);
inline_box1_.relative_bounds.bounds = gfx::RectF(20, 50, 30, 30);
std::vector<int32_t> character_offsets1;
// The width of each character is 5px.
character_offsets1.push_back(25); // "L" {20, 50, 5x30}
character_offsets1.push_back(30); // "i" {25, 50, 5x30}
character_offsets1.push_back(35); // "n" {30, 50, 5x30}
character_offsets1.push_back(40); // "e" {35, 50, 5x30}
character_offsets1.push_back(45); // " " {40, 50, 5x30}
character_offsets1.push_back(50); // "1" {45, 50, 5x30}
inline_box1_.AddIntListAttribute(
ax::mojom::IntListAttribute::kCharacterOffsets, character_offsets1);
inline_box1_.AddIntListAttribute(ax::mojom::IntListAttribute::kWordStarts,
std::vector<int32_t>{0, 5});
inline_box1_.AddIntListAttribute(ax::mojom::IntListAttribute::kWordEnds,
std::vector<int32_t>{4, 6});
inline_box1_.AddIntAttribute(ax::mojom::IntAttribute::kNextOnLineId,
line_break1_.id);
line_break1_.role = ax::mojom::Role::kLineBreak;
line_break1_.AddState(ax::mojom::State::kEditable);
line_break1_.SetName(NEWLINE);
line_break1_.relative_bounds.bounds = gfx::RectF(50, 50, 0, 30);
line_break1_.AddIntAttribute(ax::mojom::IntAttribute::kPreviousOnLineId,
inline_box1_.id);
static_text2_.role = ax::mojom::Role::kStaticText;
static_text2_.AddState(ax::mojom::State::kEditable);
static_text2_.SetName(LINE_2);
static_text2_.child_ids.push_back(inline_box2_.id);
inline_box2_.role = ax::mojom::Role::kInlineTextBox;
inline_box2_.AddState(ax::mojom::State::kEditable);
inline_box2_.SetName(LINE_2);
inline_box2_.relative_bounds.bounds = gfx::RectF(20, 80, 42, 30);
std::vector<int32_t> character_offsets2;
// The width of each character is 7 px.
character_offsets2.push_back(27); // "L" {20, 80, 7x30}
character_offsets2.push_back(34); // "i" {27, 80, 7x30}
character_offsets2.push_back(41); // "n" {34, 80, 7x30}
character_offsets2.push_back(48); // "e" {41, 80, 7x30}
character_offsets2.push_back(55); // " " {48, 80, 7x30}
character_offsets2.push_back(62); // "2" {55, 80, 7x30}
inline_box2_.AddIntListAttribute(
ax::mojom::IntListAttribute::kCharacterOffsets, character_offsets2);
inline_box2_.AddIntListAttribute(ax::mojom::IntListAttribute::kWordStarts,
std::vector<int32_t>{0, 5});
inline_box2_.AddIntListAttribute(ax::mojom::IntListAttribute::kWordEnds,
std::vector<int32_t>{4, 6});
inline_box2_.AddIntAttribute(ax::mojom::IntAttribute::kNextOnLineId,
line_break2_.id);
line_break2_.role = ax::mojom::Role::kLineBreak;
line_break2_.AddState(ax::mojom::State::kEditable);
line_break2_.SetName(NEWLINE);
line_break2_.relative_bounds.bounds = gfx::RectF(62, 80, 0, 30);
line_break2_.AddIntAttribute(ax::mojom::IntAttribute::kPreviousOnLineId,
inline_box2_.id);
paragraph_.role = ax::mojom::Role::kParagraph;
paragraph_.AddBoolAttribute(ax::mojom::BoolAttribute::kIsLineBreakingObject,
true);
paragraph_.child_ids.push_back(static_text3_.id);
root_.child_ids.push_back(paragraph_.id);
static_text3_.role = ax::mojom::Role::kStaticText;
static_text3_.SetName(AFTER_LINE);
static_text3_.child_ids.push_back(inline_box3_.id);
inline_box3_.role = ax::mojom::Role::kInlineTextBox;
inline_box3_.SetName(AFTER_LINE);
inline_box3_.relative_bounds.bounds = gfx::RectF(20, 110, 50, 30);
std::vector<int32_t> character_offsets3;
// The width of each character is 10 px.
character_offsets3.push_back(30); // "A" {20, 110, 10x30}
character_offsets3.push_back(40); // "f" {30, 110, 10x30}
character_offsets3.push_back(50); // "t" {40, 110, 10x30}
character_offsets3.push_back(60); // "e" {50, 110, 10x30}
character_offsets3.push_back(70); // "r" {60, 110, 10x30}
inline_box3_.AddIntListAttribute(
ax::mojom::IntListAttribute::kCharacterOffsets, character_offsets3);
inline_box3_.AddIntListAttribute(ax::mojom::IntListAttribute::kWordStarts,
std::vector<int32_t>{0});
inline_box3_.AddIntListAttribute(ax::mojom::IntListAttribute::kWordEnds,
std::vector<int32_t>{5});
AXTreeUpdate initial_state;
initial_state.root_id = 1;
initial_state.nodes = {
root_, div1_, button_, div2_,
check_box1_, check_box2_, text_field_, static_text1_,
inline_box1_, line_break1_, static_text2_, inline_box2_,
line_break2_, paragraph_, static_text3_, inline_box3_};
initial_state.has_tree_data = true;
initial_state.tree_data.tree_id = AXTreeID::CreateNewAXTreeID();
initial_state.tree_data.title = "Dialog title";
SetTree(std::make_unique<AXTree>(initial_state));
}
} // namespace
TEST_F(AXRangeTest, EqualityOperators) {
TestPositionInstance null_position = AXNodePosition::CreateNullPosition();
TestPositionInstance test_position1 = AXNodePosition::CreateTextPosition(
GetTreeID(), button_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance test_position2 = AXNodePosition::CreateTextPosition(
GetTreeID(), line_break1_.id, 1 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance test_position3 = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box2_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
// Invalid ranges (with at least one null endpoint).
TestPositionRange null_position_and_nullptr(null_position->Clone(), nullptr);
TestPositionRange nullptr_and_test_position(nullptr, test_position1->Clone());
TestPositionRange test_position_and_null_position(test_position2->Clone(),
null_position->Clone());
TestPositionRange test_positions_1_and_2(test_position1->Clone(),
test_position2->Clone());
TestPositionRange test_positions_2_and_1(test_position2->Clone(),
test_position1->Clone());
TestPositionRange test_positions_1_and_3(test_position1->Clone(),
test_position3->Clone());
TestPositionRange test_positions_2_and_3(test_position2->Clone(),
test_position3->Clone());
TestPositionRange test_positions_3_and_2(test_position3->Clone(),
test_position2->Clone());
EXPECT_EQ(null_position_and_nullptr, nullptr_and_test_position);
EXPECT_EQ(nullptr_and_test_position, test_position_and_null_position);
EXPECT_NE(null_position_and_nullptr, test_positions_2_and_1);
EXPECT_NE(test_positions_2_and_1, test_position_and_null_position);
EXPECT_EQ(test_positions_1_and_2, test_positions_1_and_2);
EXPECT_NE(test_positions_2_and_1, test_positions_1_and_2);
EXPECT_EQ(test_positions_3_and_2, test_positions_2_and_3);
EXPECT_NE(test_positions_1_and_2, test_positions_2_and_3);
EXPECT_EQ(test_positions_1_and_2, test_positions_1_and_3);
}
TEST_F(AXRangeTest, AsForwardRange) {
TestPositionRange null_range(AXNodePosition::CreateNullPosition(),
AXNodePosition::CreateNullPosition());
null_range = null_range.AsForwardRange();
EXPECT_TRUE(null_range.IsNull());
TestPositionInstance tree_position = AXNodePosition::CreateTreePosition(
GetTreeID(), button_.id, 0 /* child_index */);
TestPositionInstance text_position1 = AXNodePosition::CreateTextPosition(
GetTreeID(), line_break1_.id, 1 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance text_position2 = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box2_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionRange tree_to_text_range(text_position1->Clone(),
tree_position->Clone());
tree_to_text_range = tree_to_text_range.AsForwardRange();
EXPECT_EQ(*tree_position, *tree_to_text_range.anchor());
EXPECT_EQ(*text_position1, *tree_to_text_range.focus());
TestPositionRange text_to_text_range(text_position2->Clone(),
text_position1->Clone());
text_to_text_range = text_to_text_range.AsForwardRange();
EXPECT_EQ(*text_position1, *text_to_text_range.anchor());
EXPECT_EQ(*text_position2, *text_to_text_range.focus());
}
TEST_F(AXRangeTest, IsCollapsed) {
TestPositionRange null_range(AXNodePosition::CreateNullPosition(),
AXNodePosition::CreateNullPosition());
null_range = null_range.AsForwardRange();
EXPECT_FALSE(null_range.IsCollapsed());
TestPositionInstance tree_position1 = AXNodePosition::CreateTreePosition(
GetTreeID(), text_field_.id, 0 /* child_index */);
// Since there are no children in inline_box1_, the following is essentially
// an "after text" position which should not compare as equivalent to the
// above tree position which is a "before text" position inside the text
// field.
TestPositionInstance tree_position2 = AXNodePosition::CreateTreePosition(
GetTreeID(), inline_box1_.id, 0 /* child_index */);
TestPositionInstance text_position1 = AXNodePosition::CreateTextPosition(
GetTreeID(), static_text1_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance text_position2 = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box1_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance text_position3 = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box2_.id, 1 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionRange tree_to_null_range(tree_position1->Clone(),
AXNodePosition::CreateNullPosition());
EXPECT_TRUE(tree_to_null_range.IsNull());
EXPECT_FALSE(tree_to_null_range.IsCollapsed());
TestPositionRange null_to_text_range(AXNodePosition::CreateNullPosition(),
text_position1->Clone());
EXPECT_TRUE(null_to_text_range.IsNull());
EXPECT_FALSE(null_to_text_range.IsCollapsed());
TestPositionRange tree_to_tree_range(tree_position2->Clone(),
tree_position1->Clone());
EXPECT_TRUE(tree_to_tree_range.IsCollapsed());
// A tree and a text position that essentially point to the same text offset
// are equivalent, even if they are anchored to a different node.
TestPositionRange tree_to_text_range(tree_position1->Clone(),
text_position1->Clone());
EXPECT_TRUE(tree_to_text_range.IsCollapsed());
// The following positions are not equivalent since tree_position2 is an
// "after text" position.
tree_to_text_range =
TestPositionRange(tree_position2->Clone(), text_position2->Clone());
EXPECT_FALSE(tree_to_text_range.IsCollapsed());
TestPositionRange text_to_text_range(text_position1->Clone(),
text_position1->Clone());
EXPECT_TRUE(text_to_text_range.IsCollapsed());
// Two text positions that essentially point to the same text offset are
// equivalent, even if they are anchored to a different node.
text_to_text_range =
TestPositionRange(text_position1->Clone(), text_position2->Clone());
EXPECT_TRUE(text_to_text_range.IsCollapsed());
text_to_text_range =
TestPositionRange(text_position1->Clone(), text_position3->Clone());
EXPECT_FALSE(text_to_text_range.IsCollapsed());
}
TEST_F(AXRangeTest, BeginAndEndIterators) {
TestPositionInstance null_position = AXNodePosition::CreateNullPosition();
TestPositionInstance test_position1 = AXNodePosition::CreateTextPosition(
GetTreeID(), button_.id, 3 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance test_position2 = AXNodePosition::CreateTextPosition(
GetTreeID(), check_box1_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance test_position3 = AXNodePosition::CreateTextPosition(
GetTreeID(), check_box2_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance test_position4 = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box1_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionRange nullptr_and_null_position(nullptr, null_position->Clone());
EXPECT_EQ(TestPositionRange::Iterator(), nullptr_and_null_position.begin());
EXPECT_EQ(TestPositionRange::Iterator(), nullptr_and_null_position.end());
TestPositionRange test_position1_and_nullptr(test_position1->Clone(),
nullptr);
EXPECT_EQ(TestPositionRange::Iterator(), test_position1_and_nullptr.begin());
EXPECT_EQ(TestPositionRange::Iterator(), test_position1_and_nullptr.end());
TestPositionRange null_position_and_test_position2(null_position->Clone(),
test_position2->Clone());
EXPECT_EQ(TestPositionRange::Iterator(),
null_position_and_test_position2.begin());
EXPECT_EQ(TestPositionRange::Iterator(),
null_position_and_test_position2.end());
TestPositionRange test_position1_and_test_position2(test_position1->Clone(),
test_position2->Clone());
EXPECT_NE(TestPositionRange::Iterator(test_position1->Clone(),
test_position4->Clone()),
test_position1_and_test_position2.begin());
EXPECT_NE(TestPositionRange::Iterator(test_position1->Clone(),
test_position3->Clone()),
test_position1_and_test_position2.begin());
EXPECT_EQ(TestPositionRange::Iterator(test_position1->Clone(),
test_position2->Clone()),
test_position1_and_test_position2.begin());
EXPECT_EQ(TestPositionRange::Iterator(nullptr, test_position2->Clone()),
test_position1_and_test_position2.end());
TestPositionRange test_position3_and_test_position4(test_position3->Clone(),
test_position4->Clone());
EXPECT_NE(TestPositionRange::Iterator(test_position1->Clone(),
test_position4->Clone()),
test_position3_and_test_position4.begin());
EXPECT_NE(TestPositionRange::Iterator(test_position2->Clone(),
test_position4->Clone()),
test_position3_and_test_position4.begin());
EXPECT_EQ(TestPositionRange::Iterator(test_position3->Clone(),
test_position4->Clone()),
test_position3_and_test_position4.begin());
EXPECT_NE(TestPositionRange::Iterator(nullptr, test_position2->Clone()),
test_position3_and_test_position4.end());
EXPECT_NE(TestPositionRange::Iterator(nullptr, test_position3->Clone()),
test_position3_and_test_position4.end());
EXPECT_EQ(TestPositionRange::Iterator(nullptr, test_position4->Clone()),
test_position3_and_test_position4.end());
}
TEST_F(AXRangeTest, LeafTextRangeIteration) {
TestPositionInstance button_start = AXNodePosition::CreateTextPosition(
GetTreeID(), button_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance button_middle = AXNodePosition::CreateTextPosition(
GetTreeID(), button_.id, 3 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance button_end = AXNodePosition::CreateTextPosition(
GetTreeID(), button_.id, 6 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
// Since a check box is not visible to the text representation, it spans an
// empty anchor whose start and end positions are the same.
TestPositionInstance check_box1 = AXNodePosition::CreateTextPosition(
GetTreeID(), check_box1_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance check_box2 = AXNodePosition::CreateTextPosition(
GetTreeID(), check_box2_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance line1_start = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box1_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance line1_middle = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box1_.id, 3 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance line1_end = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box1_.id, 6 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance line_break1_start = AXNodePosition::CreateTextPosition(
GetTreeID(), line_break1_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance line_break1_end = AXNodePosition::CreateTextPosition(
GetTreeID(), line_break1_.id, 1 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance line2_start = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box2_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance line2_middle = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box2_.id, 3 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance line2_end = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box2_.id, 6 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance line_break2_start = AXNodePosition::CreateTextPosition(
GetTreeID(), line_break2_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance line_break2_end = AXNodePosition::CreateTextPosition(
GetTreeID(), line_break2_.id, 1 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance after_line_start = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box3_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance after_line_end = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box3_.id, 5 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
std::vector<TestPositionRange> expected_ranges;
auto TestRangeIterator =
[&expected_ranges](const TestPositionRange& test_range) {
std::vector<TestPositionRange> actual_ranges;
for (TestPositionRange leaf_text_range : test_range) {
EXPECT_TRUE(leaf_text_range.IsLeafTextRange());
actual_ranges.emplace_back(std::move(leaf_text_range));
}
EXPECT_EQ(expected_ranges.size(), actual_ranges.size());
size_t element_count =
std::min(expected_ranges.size(), actual_ranges.size());
for (size_t i = 0; i < element_count; ++i) {
EXPECT_EQ(expected_ranges[i], actual_ranges[i]);
EXPECT_EQ(expected_ranges[i].anchor()->GetAnchor(),
actual_ranges[i].anchor()->GetAnchor());
}
};
// Iterating over a null range; note that expected_ranges is empty.
TestRangeIterator(TestPositionRange(nullptr, nullptr));
TestPositionRange non_null_degenerate_range(check_box1->Clone(),
check_box1->Clone());
expected_ranges.clear();
expected_ranges.emplace_back(check_box1->Clone(), check_box1->Clone());
TestRangeIterator(non_null_degenerate_range);
TestPositionRange empty_text_forward_range(button_end->Clone(),
line1_start->Clone());
TestPositionRange empty_text_backward_range(line1_start->Clone(),
button_end->Clone());
expected_ranges.clear();
expected_ranges.emplace_back(button_end->Clone(), button_end->Clone());
expected_ranges.emplace_back(check_box1->Clone(), check_box1->Clone());
expected_ranges.emplace_back(check_box2->Clone(), check_box2->Clone());
expected_ranges.emplace_back(line1_start->Clone(), line1_start->Clone());
TestRangeIterator(empty_text_forward_range);
TestRangeIterator(empty_text_backward_range);
TestPositionRange entire_anchor_forward_range(button_start->Clone(),
button_end->Clone());
TestPositionRange entire_anchor_backward_range(button_end->Clone(),
button_start->Clone());
expected_ranges.clear();
expected_ranges.emplace_back(button_start->Clone(), button_end->Clone());
TestRangeIterator(entire_anchor_forward_range);
TestRangeIterator(entire_anchor_backward_range);
TestPositionRange across_anchors_forward_range(button_middle->Clone(),
line1_middle->Clone());
TestPositionRange across_anchors_backward_range(line1_middle->Clone(),
button_middle->Clone());
expected_ranges.clear();
expected_ranges.emplace_back(button_middle->Clone(), button_end->Clone());
expected_ranges.emplace_back(check_box1->Clone(), check_box1->Clone());
expected_ranges.emplace_back(check_box2->Clone(), check_box2->Clone());
expected_ranges.emplace_back(line1_start->Clone(), line1_middle->Clone());
TestRangeIterator(across_anchors_forward_range);
TestRangeIterator(across_anchors_backward_range);
TestPositionRange starting_at_end_position_forward_range(
line1_end->Clone(), line2_middle->Clone());
TestPositionRange starting_at_end_position_backward_range(
line2_middle->Clone(), line1_end->Clone());
expected_ranges.clear();
expected_ranges.emplace_back(line1_end->Clone(), line1_end->Clone());
expected_ranges.emplace_back(line_break1_start->Clone(),
line_break1_end->Clone());
expected_ranges.emplace_back(line2_start->Clone(), line2_middle->Clone());
TestRangeIterator(starting_at_end_position_forward_range);
TestRangeIterator(starting_at_end_position_backward_range);
TestPositionRange ending_at_start_position_forward_range(
line1_middle->Clone(), line2_start->Clone());
TestPositionRange ending_at_start_position_backward_range(
line2_start->Clone(), line1_middle->Clone());
expected_ranges.clear();
expected_ranges.emplace_back(line1_middle->Clone(), line1_end->Clone());
expected_ranges.emplace_back(line_break1_start->Clone(),
line_break1_end->Clone());
expected_ranges.emplace_back(line2_start->Clone(), line2_start->Clone());
TestRangeIterator(ending_at_start_position_forward_range);
TestRangeIterator(ending_at_start_position_backward_range);
TestPositionInstance range_start = AXNodePosition::CreateTreePosition(
GetTreeID(), root_.id, 0 /* child_index */);
TestPositionInstance range_end = AXNodePosition::CreateTextPosition(
GetTreeID(), root_.id, ALL_TEXT.length() /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionRange entire_test_forward_range(range_start->Clone(),
range_end->Clone());
TestPositionRange entire_test_backward_range(range_end->Clone(),
range_start->Clone());
expected_ranges.clear();
expected_ranges.emplace_back(button_start->Clone(), button_end->Clone());
expected_ranges.emplace_back(check_box1->Clone(), check_box1->Clone());
expected_ranges.emplace_back(check_box2->Clone(), check_box2->Clone());
expected_ranges.emplace_back(line1_start->Clone(), line1_end->Clone());
expected_ranges.emplace_back(line_break1_start->Clone(),
line_break1_end->Clone());
expected_ranges.emplace_back(line2_start->Clone(), line2_end->Clone());
expected_ranges.emplace_back(line_break2_start->Clone(),
line_break2_end->Clone());
expected_ranges.emplace_back(after_line_start->Clone(),
after_line_end->Clone());
TestRangeIterator(entire_test_forward_range);
TestRangeIterator(entire_test_backward_range);
}
TEST_F(AXRangeTest, GetTextWithWholeObjects) {
// Create a range starting from the button object and ending at the last
// character of the root, i.e. at the last character of the second line in the
// text field.
TestPositionInstance start = AXNodePosition::CreateTreePosition(
GetTreeID(), root_.id, 0 /* child_index */);
TestPositionInstance end = AXNodePosition::CreateTextPosition(
GetTreeID(), root_.id, ALL_TEXT.length() /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
ASSERT_TRUE(end->IsTextPosition());
TestPositionRange forward_range(start->Clone(), end->Clone());
EXPECT_EQ(ALL_TEXT, forward_range.GetText());
TestPositionRange backward_range(std::move(end), std::move(start));
EXPECT_EQ(ALL_TEXT, backward_range.GetText());
// Button
start = AXNodePosition::CreateTextPosition(
GetTreeID(), button_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
ASSERT_TRUE(start->IsTextPosition());
end = AXNodePosition::CreateTextPosition(
GetTreeID(), button_.id, BUTTON.length() /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
ASSERT_TRUE(end->IsTextPosition());
TestPositionRange button_range(start->Clone(), end->Clone());
EXPECT_EQ(BUTTON, button_range.GetText());
TestPositionRange button_range_backward(std::move(end), std::move(start));
EXPECT_EQ(BUTTON, button_range_backward.GetText());
// text_field_
start = AXNodePosition::CreateTextPosition(
GetTreeID(), text_field_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
end = AXNodePosition::CreateTextPosition(
GetTreeID(), text_field_.id, TEXT_FIELD.length() /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
ASSERT_TRUE(start->IsTextPosition());
ASSERT_TRUE(end->IsTextPosition());
TestPositionRange text_field_range(start->Clone(), end->Clone());
EXPECT_EQ(TEXT_FIELD, text_field_range.GetText());
TestPositionRange text_field_range_backward(std::move(end), std::move(start));
EXPECT_EQ(TEXT_FIELD, text_field_range_backward.GetText());
// static_text1_
start = AXNodePosition::CreateTextPosition(
GetTreeID(), static_text1_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
ASSERT_TRUE(start->IsTextPosition());
end = AXNodePosition::CreateTextPosition(
GetTreeID(), static_text1_.id, LINE_1.length() /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
ASSERT_TRUE(end->IsTextPosition());
TestPositionRange static_text1_range(start->Clone(), end->Clone());
EXPECT_EQ(LINE_1, static_text1_range.GetText());
TestPositionRange static_text1_range_backward(std::move(end),
std::move(start));
EXPECT_EQ(LINE_1, static_text1_range_backward.GetText());
// static_text2_
start = AXNodePosition::CreateTextPosition(
GetTreeID(), static_text2_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
ASSERT_TRUE(start->IsTextPosition());
end = AXNodePosition::CreateTextPosition(
GetTreeID(), static_text2_.id, LINE_2.length() /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
ASSERT_TRUE(end->IsTextPosition());
TestPositionRange static_text2_range(start->Clone(), end->Clone());
EXPECT_EQ(LINE_2, static_text2_range.GetText());
TestPositionRange static_text2_range_backward(std::move(end),
std::move(start));
EXPECT_EQ(LINE_2, static_text2_range_backward.GetText());
// static_text1_ to static_text2_
base::string16 text_between_text1_start_and_text2_end =
LINE_1.substr().append(NEWLINE).append(LINE_2);
start = AXNodePosition::CreateTextPosition(
GetTreeID(), static_text1_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
ASSERT_TRUE(start->IsTextPosition());
end = AXNodePosition::CreateTextPosition(
GetTreeID(), static_text2_.id, LINE_2.length() /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
ASSERT_TRUE(end->IsTextPosition());
TestPositionRange static_text_range(start->Clone(), end->Clone());
EXPECT_EQ(text_between_text1_start_and_text2_end,
static_text_range.GetText());
TestPositionRange static_text_range_backward(std::move(end),
std::move(start));
EXPECT_EQ(text_between_text1_start_and_text2_end,
static_text_range_backward.GetText());
// root_ to static_text2_'s end
base::string16 text_up_to_text2_end =
BUTTON.substr(0).append(LINE_1).append(NEWLINE).append(LINE_2);
start = AXNodePosition::CreateTreePosition(GetTreeID(), root_.id,
0 /* child_index */);
end = AXNodePosition::CreateTextPosition(
GetTreeID(), static_text2_.id, LINE_2.length() /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
ASSERT_TRUE(end->IsTextPosition());
TestPositionRange root_to_static2_text_range(start->Clone(), end->Clone());
EXPECT_EQ(text_up_to_text2_end, root_to_static2_text_range.GetText());
TestPositionRange root_to_static2_text_range_backward(std::move(end),
std::move(start));
EXPECT_EQ(text_up_to_text2_end,
root_to_static2_text_range_backward.GetText());
// root_ to static_text2_'s start
base::string16 text_up_to_text2_start =
BUTTON.substr(0).append(LINE_1).append(NEWLINE);
start = AXNodePosition::CreateTreePosition(GetTreeID(), root_.id,
0 /* child_index */);
end = AXNodePosition::CreateTreePosition(GetTreeID(), static_text2_.id,
0 /* child_index */);
TestPositionRange root_to_static2_tree_range(start->Clone(), end->Clone());
EXPECT_EQ(text_up_to_text2_start, root_to_static2_tree_range.GetText());
TestPositionRange root_to_static2_tree_range_backward(std::move(end),
std::move(start));
EXPECT_EQ(text_up_to_text2_start,
root_to_static2_tree_range_backward.GetText());
}
TEST_F(AXRangeTest, GetTextWithTextOffsets) {
base::string16 most_text = BUTTON.substr(2).append(TEXT_FIELD.substr(0, 11));
// Create a range starting from the button object and ending two characters
// before the end of the root.
TestPositionInstance start = AXNodePosition::CreateTextPosition(
GetTreeID(), button_.id, 2 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
ASSERT_TRUE(start->IsTextPosition());
TestPositionInstance end = AXNodePosition::CreateTextPosition(
GetTreeID(), static_text2_.id, 4 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
ASSERT_TRUE(end->IsTextPosition());
TestPositionRange forward_range(start->Clone(), end->Clone());
EXPECT_EQ(most_text, forward_range.GetText());
TestPositionRange backward_range(std::move(end), std::move(start));
EXPECT_EQ(most_text, backward_range.GetText());
// root_ to static_text2_'s start with offsets
base::string16 text_up_to_text2_tree_start =
BUTTON.substr(0).append(TEXT_FIELD.substr(0, 10));
start = AXNodePosition::CreateTreePosition(GetTreeID(), root_.id,
0 /* child_index */);
end = AXNodePosition::CreateTextPosition(
GetTreeID(), static_text2_.id, 3 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
ASSERT_TRUE(end->IsTextPosition());
TestPositionRange root_to_static2_tree_range(start->Clone(), end->Clone());
EXPECT_EQ(text_up_to_text2_tree_start, root_to_static2_tree_range.GetText());
TestPositionRange root_to_static2_tree_range_backward(std::move(end),
std::move(start));
EXPECT_EQ(text_up_to_text2_tree_start,
root_to_static2_tree_range_backward.GetText());
}
TEST_F(AXRangeTest, GetTextWithEmptyRanges) {
// empty string with non-leaf tree position
TestPositionInstance start = AXNodePosition::CreateTreePosition(
GetTreeID(), root_.id, 0 /* child_index */);
TestPositionRange non_leaf_tree_range(start->Clone(), start->Clone());
EXPECT_EQ(EMPTY, non_leaf_tree_range.GetText());
// empty string with leaf tree position
start = AXNodePosition::CreateTreePosition(GetTreeID(), inline_box1_.id,
0 /* child_index */);
TestPositionRange leaf_empty_range(start->Clone(), start->Clone());
EXPECT_EQ(EMPTY, leaf_empty_range.GetText());
// empty string with leaf text position and no offset
start = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box1_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionRange leaf_text_no_offset(start->Clone(), start->Clone());
EXPECT_EQ(EMPTY, leaf_text_no_offset.GetText());
// empty string with leaf text position with offset
start = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box1_.id, 3 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionRange leaf_text_offset(start->Clone(), start->Clone());
EXPECT_EQ(EMPTY, leaf_text_offset.GetText());
// empty string with non-leaf text with no offset
start = AXNodePosition::CreateTextPosition(
GetTreeID(), root_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionRange non_leaf_text_no_offset(start->Clone(), start->Clone());
EXPECT_EQ(EMPTY, non_leaf_text_no_offset.GetText());
// empty string with non-leaf text position with offset
start = AXNodePosition::CreateTextPosition(
GetTreeID(), root_.id, 3 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionRange non_leaf_text_offset(start->Clone(), start->Clone());
EXPECT_EQ(EMPTY, non_leaf_text_offset.GetText());
// empty string with same position between two anchors, but different offsets
TestPositionInstance after_end = AXNodePosition::CreateTextPosition(
GetTreeID(), line_break1_.id, 1 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance before_start = AXNodePosition::CreateTextPosition(
GetTreeID(), static_text2_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionRange same_position_different_anchors_forward(
after_end->Clone(), before_start->Clone());
EXPECT_EQ(EMPTY, same_position_different_anchors_forward.GetText());
TestPositionRange same_position_different_anchors_backward(
before_start->Clone(), after_end->Clone());
EXPECT_EQ(EMPTY, same_position_different_anchors_backward.GetText());
}
TEST_F(AXRangeTest, GetTextAddingNewlineBetweenParagraphs) {
TestPositionInstance button_start = AXNodePosition::CreateTextPosition(
GetTreeID(), button_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance button_end = AXNodePosition::CreateTextPosition(
GetTreeID(), button_.id, 6 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance line1_start = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box1_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance line1_end = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box1_.id, 6 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance line2_start = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box2_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance line2_end = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box2_.id, 6 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance after_line_start = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box3_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance after_line_end = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box3_.id, 5 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
auto TestGetTextForRange = [](TestPositionInstance range_start,
TestPositionInstance range_end,
const base::string16& expected_text,
const size_t expected_appended_newlines_count) {
TestPositionRange forward_test_range(range_start->Clone(),
range_end->Clone());
TestPositionRange backward_test_range(std::move(range_end),
std::move(range_start));
size_t appended_newlines_count = 0;
EXPECT_EQ(expected_text, forward_test_range.GetText(
AXTextConcatenationBehavior::kAsInnerText, -1,
false, &appended_newlines_count));
EXPECT_EQ(expected_appended_newlines_count, appended_newlines_count);
EXPECT_EQ(expected_text, backward_test_range.GetText(
AXTextConcatenationBehavior::kAsInnerText, -1,
false, &appended_newlines_count));
EXPECT_EQ(expected_appended_newlines_count, appended_newlines_count);
};
base::string16 button_start_to_line1_end =
BUTTON.substr().append(NEWLINE).append(LINE_1);
TestGetTextForRange(button_start->Clone(), line1_end->Clone(),
button_start_to_line1_end, 1);
base::string16 button_start_to_line1_start = BUTTON.substr().append(NEWLINE);
TestGetTextForRange(button_start->Clone(), line1_start->Clone(),
button_start_to_line1_start, 1);
base::string16 button_end_to_line1_end = NEWLINE.substr().append(LINE_1);
TestGetTextForRange(button_end->Clone(), line1_end->Clone(),
button_end_to_line1_end, 1);
base::string16 button_end_to_line1_start = NEWLINE;
TestGetTextForRange(button_end->Clone(), line1_start->Clone(),
button_end_to_line1_start, 1);
base::string16 line2_start_to_after_line_end =
LINE_2.substr().append(NEWLINE).append(AFTER_LINE);
TestGetTextForRange(line2_start->Clone(), after_line_end->Clone(),
line2_start_to_after_line_end, 0);
base::string16 line2_start_to_after_line_start =
LINE_2.substr().append(NEWLINE);
TestGetTextForRange(line2_start->Clone(), after_line_start->Clone(),
line2_start_to_after_line_start, 0);
base::string16 line2_end_to_after_line_end =
NEWLINE.substr().append(AFTER_LINE);
TestGetTextForRange(line2_end->Clone(), after_line_end->Clone(),
line2_end_to_after_line_end, 0);
base::string16 line2_end_to_after_line_start = NEWLINE;
TestGetTextForRange(line2_end->Clone(), after_line_start->Clone(),
line2_end_to_after_line_start, 0);
base::string16 all_text =
BUTTON.substr().append(NEWLINE).append(TEXT_FIELD).append(AFTER_LINE);
TestPositionInstance start = AXNodePosition::CreateTextPosition(
GetTreeID(), root_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance end = AXNodePosition::CreateTextPosition(
GetTreeID(), root_.id, ALL_TEXT.length() /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestGetTextForRange(std::move(start), std::move(end), all_text, 1);
}
TEST_F(AXRangeTest, GetTextWithMaxCount) {
TestPositionInstance line1_start = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box1_.id, 0 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);
TestPositionInstance line2_end = AXNodePosition::CreateTextPosition(
GetTreeID(), inline_box2_.id, 6 /* text_offset */,
ax::mojom::TextAffinity::kDownstream);