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");
  13   const size_t text_length = text.length();
  14   std::vector<int> line_breaks;
  15   line_breaks.push_back(7);
  16   line_breaks.push_back(14);
  17   size_t result;
  18
  19
  20   // Basic cases.
  21   result = FindAccessibleTextBoundary(text, line_breaks, LINE_BOUNDARY, 5,
  22                                       FORWARDS_DIRECTION);
  23   EXPECT_EQ(7UL, result);
  24   result = FindAccessibleTextBoundary(text, line_breaks, LINE_BOUNDARY, 9,
  25                                       BACKWARDS_DIRECTION);
  26   EXPECT_EQ(7UL, result);
  27   result = FindAccessibleTextBoundary(text, line_breaks, LINE_BOUNDARY, 10,
  28                                       FORWARDS_DIRECTION);
  29   EXPECT_EQ(14UL, result);
  30
  31
  32   // Edge cases.
  33
  34   result = FindAccessibleTextBoundary(text, line_breaks, LINE_BOUNDARY,
  35                                       text_length, BACKWARDS_DIRECTION);
  36   EXPECT_EQ(14UL, result);
  37
  38   // When the start_offset is on a line break and we are searching backwards,
  39   // it should return the previous line break.
  40   result = FindAccessibleTextBoundary(text, line_breaks, LINE_BOUNDARY, 14,
  41                                       BACKWARDS_DIRECTION);
  42   EXPECT_EQ(7UL, result);
  43
  44   // When the start_offset is on a line break and we are searching forwards,
  45   // it should return the next line break.
  46   result = FindAccessibleTextBoundary(text, line_breaks, LINE_BOUNDARY, 7,
  47                                       FORWARDS_DIRECTION);
  48   EXPECT_EQ(14UL, result);
  49
  50   // When there is no previous line break and we are searching backwards,
  51   // it should return 0.
  52   result = FindAccessibleTextBoundary(text, line_breaks, LINE_BOUNDARY, 4,
  53                                       BACKWARDS_DIRECTION);
  54   EXPECT_EQ(0UL, result);
  55
  56   // When we are on the last line break and we are searching forwards.
  57   // it should return the text length.
  58   result = FindAccessibleTextBoundary(text, line_breaks, LINE_BOUNDARY, 14,
  59                                       FORWARDS_DIRECTION);
  60   EXPECT_EQ(text_length, result);
  61 }
  62
  63 } // Namespace ui.