public void ShouldMarkCommandAsExecutedWhenExecuting()
{
var command = new TestableUndoableCommand();
Assert.IsFalse(command.WasExecuted);
command.Execute();
Assert.IsTrue(command.WasExecuted);
}
public void ShouldNotCallUnExecuteCommandIfCommandWasNotExecuted()
{
var command = new TestableUndoableCommand();
Assert.IsFalse(command.UnExecuteCommandCalled);
command.UnExecute();
Assert.IsFalse(command.ExecuteCommandCalled);
}
public void ShouldCallExecuteCommandWhenExecuting()
{
var command = new TestableUndoableCommand();
Assert.IsFalse(command.ExecuteCommandCalled);
command.Execute();
Assert.IsTrue(command.ExecuteCommandCalled);
}
public void ShouldExecuteCommand()
{
ICaretaker caretaker = new Caretaker(this.eventAggregator);
var command = new TestableUndoableCommand();
Assert.IsFalse(command.ExecuteCommandCalled);
caretaker.ExecuteCommand(command);
Assert.IsTrue(command.ExecuteCommandCalled);
}
public void ShouldNotExecuteCommandIfWasAlreadyExecuted()
{
ICaretaker caretaker = new Caretaker(this.eventAggregator);
var command = new TestableUndoableCommand();
command.Execute();
command.ExecuteCommandCalled = false;
caretaker.ExecuteCommand(command);
Assert.IsFalse(command.ExecuteCommandCalled);
}
public void ShouldUndoCommand()
{
ICaretaker caretaker = new Caretaker();
var command = new TestableUndoableCommand();
caretaker.ExecuteCommand(command);
Assert.IsFalse(command.UnExecuteCommandCalled);
caretaker.Undo();
Assert.IsTrue(command.UnExecuteCommandCalled);
}
public void ShouldNotRedoCommandIfWasNotUndo()
{
ICaretaker caretaker = new Caretaker();
var command = new TestableUndoableCommand();
caretaker.ExecuteCommand(command);
command.ExecuteCommandCalled = false;
caretaker.Redo();
Assert.IsFalse(command.ExecuteCommandCalled);
}
public void ShouldNotRedoIfNewCommandWasAdded()
{
ICaretaker caretaker = new Caretaker(this.eventAggregator);
var command = new TestableUndoableCommand();
var anotherCommand = new TestableUndoableCommand();
caretaker.ExecuteCommand(command);
caretaker.Undo();
caretaker.ExecuteCommand(anotherCommand);
command.ExecuteCommandCalled = false;
caretaker.Redo();
Assert.IsFalse(command.ExecuteCommandCalled);
}
public void ShouldTrimUndoStackIfUndoLevelLimitIsReached()
{
ICaretaker caretaker = new Caretaker(this.eventAggregator);
caretaker.SetUndoLevel(1);
var command = new TestableUndoableCommand();
var anotherCommand = new TestableUndoableCommand();
caretaker.ExecuteCommand(command);
caretaker.ExecuteCommand(anotherCommand);
caretaker.Undo();
Assert.IsTrue(anotherCommand.UnExecuteCommandCalled);
caretaker.Undo();
Assert.IsFalse(command.UnExecuteCommandCalled);
}
public void ShouldUndoARedoOperation()
{
ICaretaker caretaker = new Caretaker(this.eventAggregator);
var command = new TestableUndoableCommand();
caretaker.ExecuteCommand(command);
caretaker.Undo();
caretaker.Redo();
Assert.IsTrue(command.UnExecuteCommandCalled);
command.UnExecuteCommandCalled = false;
Assert.IsFalse(command.UnExecuteCommandCalled);
caretaker.Undo();
Assert.IsTrue(command.UnExecuteCommandCalled);
}
