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// Copyright 2014 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 "base/strings/utf_string_conversions.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/accessibility/ax_text_utils.h"
namespace ui {
TEST(AXTextUtils, FindAccessibleTextBoundaryLine) {
const base::string16 text = base::UTF8ToUTF16("Line 1.\nLine 2\n\t");
const size_t text_length = text.length();
std::vector<int> line_start_offsets;
line_start_offsets.push_back(8);
line_start_offsets.push_back(15);
size_t result;
// Basic cases.
result = FindAccessibleTextBoundary(text, line_start_offsets, LINE_BOUNDARY,
5, FORWARDS_DIRECTION);
EXPECT_EQ(8UL, result);
result = FindAccessibleTextBoundary(text, line_start_offsets, LINE_BOUNDARY,
9, BACKWARDS_DIRECTION);
EXPECT_EQ(8UL, result);
result = FindAccessibleTextBoundary(text, line_start_offsets, LINE_BOUNDARY,
10, FORWARDS_DIRECTION);
EXPECT_EQ(15UL, result);
// Edge cases.
result = FindAccessibleTextBoundary(text, line_start_offsets, LINE_BOUNDARY,
text_length, BACKWARDS_DIRECTION);
EXPECT_EQ(15UL, result);
// When the start_offset is at the start of the next line and we are searching
// backwards, it should not move.
result = FindAccessibleTextBoundary(text, line_start_offsets, LINE_BOUNDARY,
15, BACKWARDS_DIRECTION);
EXPECT_EQ(15UL, result);
// When the start_offset is at a hard line break and we are searching
// backwards, it should return the start of the previous line.
result = FindAccessibleTextBoundary(text, line_start_offsets, LINE_BOUNDARY,
14, BACKWARDS_DIRECTION);
EXPECT_EQ(8UL, result);
// When the start_offset is at the start of a line and we are searching
// forwards, it should return the start of the next line.
result = FindAccessibleTextBoundary(text, line_start_offsets, LINE_BOUNDARY,
8, FORWARDS_DIRECTION);
EXPECT_EQ(15UL, result);
// When there is no previous line break and we are searching backwards,
// it should return 0.
result = FindAccessibleTextBoundary(text, line_start_offsets, LINE_BOUNDARY,
4, BACKWARDS_DIRECTION);
EXPECT_EQ(0UL, result);
// When we are at the start of the last line and we are searching forwards.
// it should return the text length.
result = FindAccessibleTextBoundary(text, line_start_offsets, LINE_BOUNDARY,
15, FORWARDS_DIRECTION);
EXPECT_EQ(text_length, result);
}
} // Namespace ui.
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