private static void TestClear(List <int> comparisonList, UndoableList <int> undoList)
{
TestEquals(comparisonList, undoList);
undoList.Clear();
Debug.Assert(undoList.Undo());
TestEquals(comparisonList, undoList);
}
public static void Test()
{
int count = 10;
List <int> comparisonList = new List <int>(count);
UndoableList <int> undoList = new UndoableList <int>(count);
PopulateLists(comparisonList, undoList, count);
TestAdd(comparisonList, undoList);
TestClear(comparisonList, undoList);
TestInsert(comparisonList, undoList);
TestInsertRange(comparisonList, undoList);
TestRemove(comparisonList, undoList);
TestRemoveAt(comparisonList, undoList);
TestRemoveRange(comparisonList, undoList);
TestReverse(comparisonList, undoList);
}
private static void TestRemoveAt(List <int> comparisonList, UndoableList <int> undoList)
{
TestEquals(comparisonList, undoList);
int index = comparisonList.Count / 2;
int item = comparisonList[index];
comparisonList.RemoveAt(index);
undoList.RemoveAt(index);
TestEquals(comparisonList, undoList);
comparisonList.Insert(index, item);
Debug.Assert(undoList.Undo());
TestEquals(comparisonList, undoList);
}
private static void TestRemoveRange(List <int> comparisonList, UndoableList <int> undoList)
{
TestEquals(comparisonList, undoList);
int index = comparisonList.Count / 2;
int count = comparisonList.Count - index;
List <int> range = comparisonList.GetRange(index, count);
comparisonList.RemoveRange(index, count);
undoList.RemoveRange(index, count);
TestEquals(comparisonList, undoList);
comparisonList.InsertRange(index, range);
Debug.Assert(undoList.Undo());
TestEquals(comparisonList, undoList);
}
private static void TestAdd(List <int> comparisonList, UndoableList <int> undoList)
{
TestEquals(comparisonList, undoList);
Stack <int> redoStack = new Stack <int>();
while (comparisonList.Count > 0)
{
redoStack.Push(comparisonList[comparisonList.Count - 1]);
comparisonList.RemoveAt(comparisonList.Count - 1);
Debug.Assert(undoList.Undo());
TestEquals(comparisonList, undoList);
}
while (redoStack.Count > 0)
{
comparisonList.Add(redoStack.Pop());
Debug.Assert(undoList.Redo());
TestEquals(comparisonList, undoList);
}
}
private static void TestInsertRange(List <int> comparisonList, UndoableList <int> undoList)
{
TestEquals(comparisonList, undoList);
int[] range = { 1, 2, 3, 4, 5 };
int index = comparisonList.Count / 2;
comparisonList.InsertRange(index, range);
undoList.InsertRange(index, range);
TestEquals(comparisonList, undoList);
comparisonList.RemoveRange(index, range.Length);
Debug.Assert(undoList.Undo());
TestEquals(comparisonList, undoList);
comparisonList.InsertRange(index, range);
Debug.Assert(undoList.Redo());
TestEquals(comparisonList, undoList);
}
private static void TestReverse(List <int> comparisonList, UndoableList <int> undoList)
{
TestEquals(comparisonList, undoList);
comparisonList.Reverse();
undoList.Reverse();
TestEquals(comparisonList, undoList);
comparisonList.Reverse();
Debug.Assert(undoList.Undo());
TestEquals(comparisonList, undoList);
comparisonList.Reverse();
Debug.Assert(undoList.Redo());
TestEquals(comparisonList, undoList);
int count = comparisonList.Count / 2;
comparisonList.Reverse(0, count);
undoList.Reverse(0, count);
TestEquals(comparisonList, undoList);
comparisonList.Reverse(0, count);
Debug.Assert(undoList.Undo());
TestEquals(comparisonList, undoList);
comparisonList.Reverse(0, count);
Debug.Assert(undoList.Redo());
TestEquals(comparisonList, undoList);
}