ui/base/models/list_selection_model_unittest.cc

   1 // Copyright (c) 2012 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 "ui/base/models/list_selection_model.h"
   6
   7 #include <algorithm>
   8 #include <string>
   9
  10 #include "base/strings/string_number_conversions.h"
  11 #include "testing/gtest/include/gtest/gtest.h"
  12
  13 namespace ui {
  14
  15 typedef testing::Test ListSelectionModelTest;
  16
  17 // Returns the state of the selection model as a string. The format is:
  18 // 'active=X anchor=X selection=X X X...'.
  19 static std::string StateAsString(const ListSelectionModel& model) {
  20   std::string result = "active=" + base::IntToString(model.active()) +
  21       " anchor=" + base::IntToString(model.anchor()) +
  22       " selection=";
  23   const ListSelectionModel::SelectedIndices& selection(
  24       model.selected_indices());
  25   for (size_t i = 0; i < selection.size(); ++i) {
  26     if (i != 0)
  27       result += " ";
  28     result += base::IntToString(selection[i]);
  29   }
  30   return result;
  31 }
  32
  33 TEST_F(ListSelectionModelTest, InitialState) {
  34   ListSelectionModel model;
  35   EXPECT_EQ("active=-1 anchor=-1 selection=", StateAsString(model));
  36   EXPECT_TRUE(model.empty());
  37 }
  38
  39 TEST_F(ListSelectionModelTest, SetSelectedIndex) {
  40   ListSelectionModel model;
  41   model.SetSelectedIndex(2);
  42   EXPECT_EQ("active=2 anchor=2 selection=2", StateAsString(model));
  43   EXPECT_FALSE(model.empty());
  44 }
  45
  46 TEST_F(ListSelectionModelTest, SetSelectedIndexToEmpty) {
  47   ListSelectionModel model;
  48   model.SetSelectedIndex(-1);
  49   EXPECT_EQ("active=-1 anchor=-1 selection=", StateAsString(model));
  50   EXPECT_TRUE(model.empty());
  51 }
  52
  53 TEST_F(ListSelectionModelTest, IncrementFrom) {
  54   ListSelectionModel model;
  55   model.SetSelectedIndex(1);
  56   model.IncrementFrom(1);
  57   EXPECT_EQ("active=2 anchor=2 selection=2", StateAsString(model));
  58
  59   // Increment from 4. This shouldn't effect the selection as its past the
  60   // end of the selection.
  61   model.IncrementFrom(4);
  62   EXPECT_EQ("active=2 anchor=2 selection=2", StateAsString(model));
  63 }
  64
  65 TEST_F(ListSelectionModelTest, DecrementFrom) {
  66   ListSelectionModel model;
  67   model.SetSelectedIndex(2);
  68   model.DecrementFrom(0);
  69   EXPECT_EQ("active=1 anchor=1 selection=1", StateAsString(model));
  70
  71   // Shift down from 1. As the selection as the index being removed, this should
  72   // clear the selection.
  73   model.DecrementFrom(1);
  74   EXPECT_EQ("active=-1 anchor=-1 selection=", StateAsString(model));
  75
  76   // Reset the selection to 2, and shift down from 4. This shouldn't do
  77   // anything.
  78   model.SetSelectedIndex(2);
  79   model.DecrementFrom(4);
  80   EXPECT_EQ("active=2 anchor=2 selection=2", StateAsString(model));
  81 }
  82
  83 TEST_F(ListSelectionModelTest, IsSelected) {
  84   ListSelectionModel model;
  85   model.SetSelectedIndex(2);
  86   EXPECT_FALSE(model.IsSelected(0));
  87   EXPECT_TRUE(model.IsSelected(2));
  88 }
  89
  90 TEST_F(ListSelectionModelTest, AddIndexToSelected) {
  91   ListSelectionModel model;
  92   model.AddIndexToSelection(2);
  93   EXPECT_EQ("active=-1 anchor=-1 selection=2", StateAsString(model));
  94
  95   model.AddIndexToSelection(4);
  96   EXPECT_EQ("active=-1 anchor=-1 selection=2 4", StateAsString(model));
  97 }
  98
  99 TEST_F(ListSelectionModelTest, RemoveIndexFromSelection) {
 100   ListSelectionModel model;
 101   model.SetSelectedIndex(2);
 102   model.AddIndexToSelection(4);
 103   EXPECT_EQ("active=2 anchor=2 selection=2 4", StateAsString(model));
 104
 105   model.RemoveIndexFromSelection(4);
 106   EXPECT_EQ("active=2 anchor=2 selection=2", StateAsString(model));
 107
 108   model.RemoveIndexFromSelection(2);
 109   EXPECT_EQ("active=2 anchor=2 selection=", StateAsString(model));
 110 }
 111
 112 TEST_F(ListSelectionModelTest, SetSelectionFromAnchorTo) {
 113   ListSelectionModel model;
 114   model.SetSelectedIndex(2);
 115   model.SetSelectionFromAnchorTo(7);
 116   EXPECT_EQ("active=7 anchor=2 selection=2 3 4 5 6 7", StateAsString(model));
 117
 118   model.Clear();
 119   model.SetSelectedIndex(7);
 120   model.SetSelectionFromAnchorTo(2);
 121   EXPECT_EQ("active=2 anchor=7 selection=2 3 4 5 6 7", StateAsString(model));
 122
 123   model.Clear();
 124   model.SetSelectionFromAnchorTo(7);
 125   EXPECT_EQ("active=7 anchor=7 selection=7", StateAsString(model));
 126 }
 127
 128 TEST_F(ListSelectionModelTest, Clear) {
 129   ListSelectionModel model;
 130   model.SetSelectedIndex(2);
 131
 132   model.Clear();
 133   EXPECT_EQ("active=-1 anchor=-1 selection=", StateAsString(model));
 134 }
 135
 136 TEST_F(ListSelectionModelTest, MoveToLeft) {
 137   ListSelectionModel model;
 138   model.SetSelectedIndex(0);
 139   model.AddIndexToSelection(4);
 140   model.AddIndexToSelection(10);
 141   model.set_anchor(4);
 142   model.set_active(4);
 143   model.Move(4, 0);
 144   EXPECT_EQ("active=0 anchor=0 selection=0 1 10", StateAsString(model));
 145 }
 146
 147 TEST_F(ListSelectionModelTest, MoveToRight) {
 148   ListSelectionModel model;
 149   model.SetSelectedIndex(0);
 150   model.AddIndexToSelection(4);
 151   model.AddIndexToSelection(10);
 152   model.set_anchor(0);
 153   model.set_active(0);
 154   model.Move(0, 3);
 155   EXPECT_EQ("active=3 anchor=3 selection=3 4 10", StateAsString(model));
 156 }
 157
 158 TEST_F(ListSelectionModelTest, Copy) {
 159   ListSelectionModel model;
 160   model.SetSelectedIndex(0);
 161   model.AddIndexToSelection(4);
 162   model.AddIndexToSelection(10);
 163   EXPECT_EQ("active=0 anchor=0 selection=0 4 10", StateAsString(model));
 164   ListSelectionModel model2;
 165   model2.Copy(model);
 166   EXPECT_EQ("active=0 anchor=0 selection=0 4 10", StateAsString(model2));
 167 }
 168
 169 TEST_F(ListSelectionModelTest, AddSelectionFromAnchorTo) {
 170   ListSelectionModel model;
 171   model.SetSelectedIndex(2);
 172
 173   model.AddSelectionFromAnchorTo(4);
 174   EXPECT_EQ("active=4 anchor=2 selection=2 3 4", StateAsString(model));
 175
 176   model.AddSelectionFromAnchorTo(0);
 177   EXPECT_EQ("active=0 anchor=2 selection=0 1 2 3 4", StateAsString(model));
 178 }
 179
 180 TEST_F(ListSelectionModelTest, Equals) {
 181   ListSelectionModel model1;
 182   model1.SetSelectedIndex(0);
 183   model1.AddSelectionFromAnchorTo(4);
 184
 185   ListSelectionModel model2;
 186   model2.SetSelectedIndex(0);
 187   model2.AddSelectionFromAnchorTo(4);
 188
 189   EXPECT_TRUE(model1.Equals(model2));
 190   EXPECT_TRUE(model2.Equals(model1));
 191
 192   model2.SetSelectedIndex(0);
 193   EXPECT_FALSE(model1.Equals(model2));
 194   EXPECT_FALSE(model2.Equals(model1));
 195 }
 196
 197 }  // namespace ui