ui/accessibility/ax_text_utils_unittest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/strings/utf_string_conversions.h"
   6 #include "testing/gtest/include/gtest/gtest.h"
   7 #include "ui/accessibility/ax_text_utils.h"
   8
   9 namespace ui {
  10
  11 TEST(AXTextUtils, FindAccessibleTextBoundaryLine) {
  12   const base::string16 text = base::UTF8ToUTF16("Line 1.\nLine 2\n\t");
  13   const size_t text_length = text.length();
  14   std::vector<int> line_start_offsets;
  15   line_start_offsets.push_back(8);
  16   line_start_offsets.push_back(15);
  17   size_t result;
  18
  19
  20   // Basic cases.
  21   result = FindAccessibleTextBoundary(text, line_start_offsets, LINE_BOUNDARY,
  22                                       5, FORWARDS_DIRECTION);
  23   EXPECT_EQ(8UL, result);
  24   result = FindAccessibleTextBoundary(text, line_start_offsets, LINE_BOUNDARY,
  25                                        9, BACKWARDS_DIRECTION);
  26   EXPECT_EQ(8UL, result);
  27   result = FindAccessibleTextBoundary(text, line_start_offsets, LINE_BOUNDARY,
  28                                        10, FORWARDS_DIRECTION);
  29   EXPECT_EQ(15UL, result);
  30
  31
  32   // Edge cases.
  33
  34   result = FindAccessibleTextBoundary(text, line_start_offsets, LINE_BOUNDARY,
  35                                       text_length, BACKWARDS_DIRECTION);
  36   EXPECT_EQ(15UL, result);
  37
  38   // When the start_offset is at the start of the next line and we are searching
  39   // backwards, it should not move.
  40   result = FindAccessibleTextBoundary(text, line_start_offsets, LINE_BOUNDARY,
  41                                        15, BACKWARDS_DIRECTION);
  42   EXPECT_EQ(15UL, result);
  43
  44   // When the start_offset is at a hard line break and we are searching
  45   // backwards, it should return the start of the previous line.
  46   result = FindAccessibleTextBoundary(text, line_start_offsets, LINE_BOUNDARY,
  47                                        14, BACKWARDS_DIRECTION);
  48   EXPECT_EQ(8UL, result);
  49
  50   // When the start_offset is at the start of a line and we are searching
  51   // forwards, it should return the start of the next line.
  52   result = FindAccessibleTextBoundary(text, line_start_offsets, LINE_BOUNDARY,
  53                                       8, FORWARDS_DIRECTION);
  54   EXPECT_EQ(15UL, result);
  55
  56   // When there is no previous line break and we are searching backwards,
  57   // it should return 0.
  58   result = FindAccessibleTextBoundary(text, line_start_offsets, LINE_BOUNDARY,
  59                                       4, BACKWARDS_DIRECTION);
  60   EXPECT_EQ(0UL, result);
  61
  62   // When we are at the start of the last line and we are searching forwards.
  63   // it should return the text length.
  64   result = FindAccessibleTextBoundary(text, line_start_offsets, LINE_BOUNDARY,
  65                                       15, FORWARDS_DIRECTION);
  66   EXPECT_EQ(text_length, result);
  67 }
  68
  69 } // Namespace ui.