public void CommandifiedListSortWithUndoTest()
{
Guid sessionId = Guid.NewGuid();
CQManager.ActivateCommandQueueStack(sessionId);
CommandifiedList <string> toTest = new CommandifiedList <string>()
{
"aaa", "aab", "aba", "baa"
};
// use command to sort the list, so it's undoable.
CQManager.EnqueueAndRunCommand(new Command <string>(() => toTest.Sort(SortAlgorithm.ShellSort, SortDirection.Descending)));
Assert.AreEqual("baa", toTest[0]);
Assert.AreEqual("aba", toTest[1]);
Assert.AreEqual("aab", toTest[2]);
Assert.AreEqual("aaa", toTest[3]);
// undo the sort
CQManager.UndoLastCommand();
Assert.AreEqual("aaa", toTest[0]);
Assert.AreEqual("aab", toTest[1]);
Assert.AreEqual("aba", toTest[2]);
Assert.AreEqual("baa", toTest[3]);
CQManager.ActivateCommandQueueStack(Guid.Empty);
}
public void CommandifiedListClearTest()
{
Guid sessionId = Guid.NewGuid();
CQManager.ActivateCommandQueueStack(sessionId);
CommandifiedList <string> toTest = new CommandifiedList <string>()
{
"Foo", "Bar", "Blah"
};
Assert.AreEqual(3, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
Assert.AreEqual("Blah", toTest[2]);
// perform a clear operation. We'll undo this later on.
toTest.Clear();
Assert.AreEqual(0, toTest.Count);
// undo operation.
CQManager.UndoLastCommand();
Assert.AreEqual(3, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
Assert.AreEqual("Blah", toTest[2]);
CQManager.ActivateCommandQueueStack(Guid.Empty);
}
private void MultiThreadedSyncedCommandifiedListAccessTest_ThreadA(CommandifiedList <string> list, WaitHandle waitHandle, Action <Exception> handler)
{
Console.WriteLine("Thread A started");
try
{
var random = new Random((int)DateTime.Now.Ticks);
for (int i = 0; i < 500; i++)
{
//Console.WriteLine("\tThread A: iteration: {0}", i);
var countBefore = list.Count;
var index = random.Next(0, countBefore);
list.RemoveAt(index);
Assert.AreEqual(countBefore - 1, list.Count);
CQManager.UndoLastCommand();
Assert.AreEqual(countBefore, list.Count);
Thread.Sleep(1);
CQManager.RedoLastCommand();
Assert.AreEqual(countBefore - 1, list.Count);
Thread.Sleep(2);
CQManager.UndoLastCommand();
Assert.AreEqual(countBefore, list.Count);
}
}
catch (Exception e)
{
handler(e);
}
finally
{
((AutoResetEvent)waitHandle).Set();
}
Console.WriteLine("Thread A ended");
}
public void MultiThreadedSyncedCommandifiedListAccessTest()
{
// set up our session.
Guid sessionId = Guid.NewGuid();
CQManager.ActivateCommandQueueStack(sessionId);
var toTest = new CommandifiedList <string>(isSynchronized: true);
for (int i = 0; i < 10; i++)
{
toTest.Add(i.ToString());
}
var waitHandles = new WaitHandle[] { new AutoResetEvent(false), new AutoResetEvent(false) };
Exception caughtException = null;
Console.WriteLine("Starting threads...");
var threadA = new Thread(() => MultiThreadedSyncedCommandifiedListAccessTest_ThreadA(toTest, waitHandles[0], (e) => caughtException = e));
var threadB = new Thread(() => MultiThreadedSyncedCommandifiedListAccessTest_ThreadB(toTest, waitHandles[1], (e) => caughtException = e));
threadA.Start();
threadB.Start();
Console.WriteLine("Threads started... waiting for handles");
WaitHandle.WaitAll(waitHandles);
if (caughtException != null)
{
throw caughtException;
}
Console.WriteLine("All completed.");
}
public void CancelableEventsOnCommandifiedListTests()
{
CommandifiedList <int> list = new CommandifiedList <int>()
{
1, 2, 3
};
EventHandler <CancelableListModificationEventArgs <int> > cancelableHandler = delegate(object sender, CancelableListModificationEventArgs <int> e) { e.Cancel = true; };
list.ElementAdding += cancelableHandler;
list.ElementRemoving += cancelableHandler;
list.ListClearing += cancelableHandler;
// reset command queue manager, so it will only undo commands issued after this reset
CommandQueueManagerSingleton.GetInstance().ResetActiveCommandQueue();
list.Add(4);
Assert.AreEqual(3, list.Count);
Assert.IsFalse(list.Contains(4));
// undo shouldn't have any effect
CommandQueueManagerSingleton.GetInstance().UndoLastCommand();
Assert.AreEqual(3, list.Count);
Assert.IsFalse(list.Contains(4));
list.Clear();
Assert.AreEqual(3, list.Count);
// undo shouldn't have any effect
CommandQueueManagerSingleton.GetInstance().UndoLastCommand();
Assert.AreEqual(3, list.Count);
list.Remove(1);
Assert.AreEqual(3, list.Count);
Assert.IsTrue(list.Contains(1));
// undo shouldn't have any effect
CommandQueueManagerSingleton.GetInstance().UndoLastCommand();
Assert.AreEqual(3, list.Count);
Assert.IsTrue(list.Contains(1));
list.ElementAdding -= cancelableHandler;
list.ElementRemoving -= cancelableHandler;
list.ListClearing -= cancelableHandler;
list.Add(4);
Assert.AreEqual(4, list.Count);
Assert.IsTrue(list.Contains(4));
list.Remove(1);
Assert.AreEqual(3, list.Count);
Assert.IsFalse(list.Contains(1));
list.Clear();
Assert.AreEqual(0, list.Count);
}
private void MultiThreadedSyncedCommandifiedListAccessTest_ThreadB(CommandifiedList <string> list, WaitHandle waitHandle, Action <Exception> handler)
{
Console.WriteLine("Thread B started");
try
{
for (int i = 0; i < 500; i++)
{
//Console.WriteLine("\tThread B: iteration: {0}", i);
bool lockTaken = false;
object syncRoot = list.SyncRoot;
try
{
if (list.IsSynchronized)
{
Monitor.Enter(syncRoot);
lockTaken = true;
}
int countBefore = list.Count;
int count = 0;
foreach (var v in list)
{
count++;
}
Assert.AreEqual(countBefore, count, "Count after enumeration differs from initial count of list");
}
finally
{
if (lockTaken)
{
Monitor.Exit(syncRoot);
}
}
Thread.Sleep(7);
}
}
catch (Exception e)
{
handler(e);
}
finally
{
((AutoResetEvent)waitHandle).Set();
}
Console.WriteLine("Thread B ended");
}
public void CommandifiedListSetItemTest()
{
Guid sessionId = Guid.NewGuid();
CQManager.ActivateCommandQueueStack(sessionId);
CommandifiedList <string> toTest = new CommandifiedList <string>()
{
"Foo", "Bar"
};
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
// perform a set index operation. We'll undo this later on.
toTest[0] = "Blah";
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Blah", toTest[0]);
// undo operation.
CQManager.UndoLastCommand();
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
// use a library extension method to swap two items. We want to roll back the swap call completely, so the SwapValues call is seen
// as an atomic action. We therefore have to create a command to make it undoable as an atomic action. It doesn't have an undo action,
// it relies on the actions it executes by itself to undo.
CQManager.EnqueueAndRunCommand(new Command <string>(() => toTest.SwapValues(0, 1)));
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Bar", toTest[0]);
Assert.AreEqual("Foo", toTest[1]);
// undo operation. This is undoing the call to SwapValues, which by undoing that, will undo all the actions SwapValues took, i.e. setting 2 items at
// 2 indexes.
CQManager.UndoLastCommand();
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
CQManager.ActivateCommandQueueStack(Guid.Empty);
}
public void CommandifiedListInsertTest()
{
Guid sessionId = Guid.NewGuid();
CQManager.ActivateCommandQueueStack(sessionId);
CommandifiedList <string> toTest = new CommandifiedList <string>()
{
"Foo", "Bar"
};
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
// perform an insert operation, this can be triggered by both 'Add' and 'Insert'. We'll undo this later on.
toTest.Add("Blah");
Assert.AreEqual(3, toTest.Count);
Assert.AreEqual("Blah", toTest[2]);
// undo operation.
CQManager.UndoLastCommand();
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
toTest.Insert(1, "Blah");
Assert.AreEqual(3, toTest.Count);
Assert.AreEqual("Blah", toTest[1]);
Assert.AreEqual("Bar", toTest[2]);
// undo operation.
CQManager.UndoLastCommand();
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
CQManager.ActivateCommandQueueStack(Guid.Empty);
}
public void CommandifiedListRemoveTest()
{
Guid sessionId = Guid.NewGuid();
CQManager.ActivateCommandQueueStack(sessionId);
CommandifiedList <string> toTest = new CommandifiedList <string>()
{
"Foo", "Bar"
};
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
// perform a remove operation. We'll undo this later on.
toTest.Remove("Foo");
Assert.AreEqual(1, toTest.Count);
Assert.AreEqual("Bar", toTest[0]);
// undo operation.
CQManager.UndoLastCommand();
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
toTest.RemoveAt(1);
Assert.AreEqual(1, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
// undo operation.
CQManager.UndoLastCommand();
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
CQManager.ActivateCommandQueueStack(Guid.Empty);
}
public void MoveItemInCommandifiedListTest()
{
CommandifiedList <int> list = new CommandifiedList <int> {
1, 2, 3, 4
};
int oldIndexInEvent = -1;
int newIndexInEvent = -1;
bool eventRaised = false;
list.ListChanged += (sender, e) =>
{
eventRaised = true;
oldIndexInEvent = e.OldIndex;
newIndexInEvent = e.NewIndex;
};
// move item at position 0 to position 1
list.MoveElement(0, 1);
Assert.IsTrue(eventRaised);
Assert.AreEqual(0, oldIndexInEvent);
Assert.AreEqual(1, newIndexInEvent);
Assert.AreEqual(2, list[0]);
Assert.AreEqual(1, list[1]);
}
public void CommandifiedListInsertTest()
{
Guid sessionId = Guid.NewGuid();
CQManager.ActivateCommandQueueStack(sessionId);
CommandifiedList<string> toTest = new CommandifiedList<string>() { "Foo", "Bar"};
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
// perform an insert operation, this can be triggered by both 'Add' and 'Insert'. We'll undo this later on.
toTest.Add("Blah");
Assert.AreEqual(3, toTest.Count);
Assert.AreEqual("Blah", toTest[2]);
// undo operation.
CQManager.UndoLastCommand();
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
toTest.Insert(1, "Blah");
Assert.AreEqual(3, toTest.Count);
Assert.AreEqual("Blah", toTest[1]);
Assert.AreEqual("Bar", toTest[2]);
// undo operation.
CQManager.UndoLastCommand();
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
CQManager.ActivateCommandQueueStack(Guid.Empty);
}
public void CancelableEventsOnCommandifiedListTests()
{
CommandifiedList<int> list = new CommandifiedList<int>() { 1, 2, 3 };
EventHandler<CancelableListModificationEventArgs<int>> cancelableHandler = delegate(object sender, CancelableListModificationEventArgs<int> e) { e.Cancel = true; };
list.ElementAdding += cancelableHandler;
list.ElementRemoving += cancelableHandler;
list.ListClearing += cancelableHandler;
// reset command queue manager, so it will only undo commands issued after this reset
CommandQueueManagerSingleton.GetInstance().ResetActiveCommandQueue();
list.Add(4);
Assert.AreEqual(3, list.Count);
Assert.IsFalse(list.Contains(4));
// undo shouldn't have any effect
CommandQueueManagerSingleton.GetInstance().UndoLastCommand();
Assert.AreEqual(3, list.Count);
Assert.IsFalse(list.Contains(4));
list.Clear();
Assert.AreEqual(3, list.Count);
// undo shouldn't have any effect
CommandQueueManagerSingleton.GetInstance().UndoLastCommand();
Assert.AreEqual(3, list.Count);
list.Remove(1);
Assert.AreEqual(3, list.Count);
Assert.IsTrue(list.Contains(1));
// undo shouldn't have any effect
CommandQueueManagerSingleton.GetInstance().UndoLastCommand();
Assert.AreEqual(3, list.Count);
Assert.IsTrue(list.Contains(1));
list.ElementAdding -= cancelableHandler;
list.ElementRemoving -= cancelableHandler;
list.ListClearing -= cancelableHandler;
list.Add(4);
Assert.AreEqual(4, list.Count);
Assert.IsTrue(list.Contains(4));
list.Remove(1);
Assert.AreEqual(3, list.Count);
Assert.IsFalse(list.Contains(1));
list.Clear();
Assert.AreEqual(0, list.Count);
}
public void CommandifiedListRemoveTest()
{
Guid sessionId = Guid.NewGuid();
CQManager.ActivateCommandQueueStack(sessionId);
CommandifiedList<string> toTest = new CommandifiedList<string>() { "Foo", "Bar" };
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
// perform a remove operation. We'll undo this later on.
toTest.Remove("Foo");
Assert.AreEqual(1, toTest.Count);
Assert.AreEqual("Bar", toTest[0]);
// undo operation.
CQManager.UndoLastCommand();
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
toTest.RemoveAt(1);
Assert.AreEqual(1, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
// undo operation.
CQManager.UndoLastCommand();
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
CQManager.ActivateCommandQueueStack(Guid.Empty);
}
public void CommandifiedListSetItemTest()
{
Guid sessionId = Guid.NewGuid();
CQManager.ActivateCommandQueueStack(sessionId);
CommandifiedList<string> toTest = new CommandifiedList<string>() { "Foo", "Bar" };
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
// perform a set index operation. We'll undo this later on.
toTest[0] = "Blah";
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Blah", toTest[0]);
// undo operation.
CQManager.UndoLastCommand();
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
// use a library extension method to swap two items. We want to roll back the swap call completely, so the SwapValues call is seen
// as an atomic action. We therefore have to create a command to make it undoable as an atomic action. It doesn't have an undo action,
// it relies on the actions it executes by itself to undo.
CQManager.EnqueueAndRunCommand(new Command<string>(() => toTest.SwapValues(0, 1)));
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Bar", toTest[0]);
Assert.AreEqual("Foo", toTest[1]);
// undo operation. This is undoing the call to SwapValues, which by undoing that, will undo all the actions SwapValues took, i.e. setting 2 items at
// 2 indexes.
CQManager.UndoLastCommand();
Assert.AreEqual(2, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
CQManager.ActivateCommandQueueStack(Guid.Empty);
}
public void CommandifiedListSortWithUndoTest()
{
Guid sessionId = Guid.NewGuid();
CQManager.ActivateCommandQueueStack(sessionId);
CommandifiedList<string> toTest = new CommandifiedList<string>() { "aaa", "aab", "aba", "baa" };
// use command to sort the list, so it's undoable.
CQManager.EnqueueAndRunCommand(new Command<string>(() => toTest.Sort(SortAlgorithm.ShellSort, SortDirection.Descending)));
Assert.AreEqual("baa", toTest[0]);
Assert.AreEqual("aba", toTest[1]);
Assert.AreEqual("aab", toTest[2]);
Assert.AreEqual("aaa", toTest[3]);
// undo the sort
CQManager.UndoLastCommand();
Assert.AreEqual("aaa", toTest[0]);
Assert.AreEqual("aab", toTest[1]);
Assert.AreEqual("aba", toTest[2]);
Assert.AreEqual("baa", toTest[3]);
CQManager.ActivateCommandQueueStack(Guid.Empty);
}
public void MoveItemInCommandifiedListTest()
{
CommandifiedList<int> list = new CommandifiedList<int> { 1, 2, 3, 4 };
int oldIndexInEvent = -1;
int newIndexInEvent = -1;
bool eventRaised = false;
list.ListChanged += (sender, e) =>
{
eventRaised = true;
oldIndexInEvent = e.OldIndex;
newIndexInEvent = e.NewIndex;
};
// move item at position 0 to position 1
list.MoveElement(0, 1);
Assert.IsTrue(eventRaised);
Assert.AreEqual(0, oldIndexInEvent);
Assert.AreEqual(1, newIndexInEvent);
Assert.AreEqual(2, list[0]);
Assert.AreEqual(1, list[1]);
}
public void CommandifiedListClearTest()
{
Guid sessionId = Guid.NewGuid();
CQManager.ActivateCommandQueueStack(sessionId);
CommandifiedList<string> toTest = new CommandifiedList<string>() { "Foo", "Bar", "Blah" };
Assert.AreEqual(3, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
Assert.AreEqual("Blah", toTest[2]);
// perform a clear operation. We'll undo this later on.
toTest.Clear();
Assert.AreEqual(0, toTest.Count);
// undo operation.
CQManager.UndoLastCommand();
Assert.AreEqual(3, toTest.Count);
Assert.AreEqual("Foo", toTest[0]);
Assert.AreEqual("Bar", toTest[1]);
Assert.AreEqual("Blah", toTest[2]);
CQManager.ActivateCommandQueueStack(Guid.Empty);
}