public void ShouldGetRegisteredCommands()
{
var firstCommand = new TestCommand();
var secondCommand = new TestCommand();
var compositeCommand = new CompositeCommand();
compositeCommand.RegisterCommand(firstCommand);
compositeCommand.RegisterCommand(secondCommand);
var commands = compositeCommand.RegisteredCommands;
Assert.True(commands.Count > 0);
}
public void RegisteringCommandWithNullThrows()
{
Assert.Throws<ArgumentNullException>(() =>
{
var compositeCommand = new CompositeCommand();
compositeCommand.RegisterCommand(null);
});
}
public void RegisteringCommandTwiceThrows()
{
Assert.Throws<InvalidOperationException>(() =>
{
var compositeCommand = new CompositeCommand();
var duplicateCommand = new TestCommand();
compositeCommand.RegisterCommand(duplicateCommand);
compositeCommand.RegisterCommand(duplicateCommand);
});
}
public void ShouldIgnoreChangesToIsActiveDuringExecution()
{
var firstCommand = new MockActiveAwareCommand { IsActive = true };
var secondCommand = new MockActiveAwareCommand { IsActive = true };
// During execution set the second command to inactive, this should not affect the currently
// executed selection.
firstCommand.ExecuteAction += new Action<object>((object parameter) => secondCommand.IsActive = false);
var compositeCommand = new CompositeCommand(true);
compositeCommand.RegisterCommand(firstCommand);
compositeCommand.RegisterCommand(secondCommand);
compositeCommand.Execute(null);
Assert.True(secondCommand.WasExecuted);
}
public void RegisteringCommandInItselfThrows()
{
Assert.Throws<ArgumentException>(() =>
{
var compositeCommand = new CompositeCommand();
compositeCommand.RegisterCommand(compositeCommand);
});
}
public void ShouldNotMonitorActivityIfUseActiveMonitoringFalse()
{
var mockCommand = new MockActiveAwareCommand();
mockCommand.IsValid = true;
mockCommand.IsActive = true;
var nonActiveAwareCompositeCommand = new CompositeCommand(false);
bool canExecuteChangedRaised = false;
nonActiveAwareCompositeCommand.RegisterCommand(mockCommand);
nonActiveAwareCompositeCommand.CanExecuteChanged += delegate
{
canExecuteChangedRaised = true;
};
mockCommand.IsActive = false;
Assert.False(canExecuteChangedRaised);
nonActiveAwareCompositeCommand.Execute(null);
Assert.True(mockCommand.WasExecuted);
}
public void ShouldRemoveCanExecuteChangedHandler()
{
bool canExecuteChangedRaised = false;
var compositeCommand = new CompositeCommand();
var commmand = new DelegateCommand(() => { });
compositeCommand.RegisterCommand(commmand);
EventHandler handler = (s, e) => canExecuteChangedRaised = true;
compositeCommand.CanExecuteChanged += handler;
commmand.RaiseCanExecuteChanged();
Assert.True(canExecuteChangedRaised);
canExecuteChangedRaised = false;
compositeCommand.CanExecuteChanged -= handler;
commmand.RaiseCanExecuteChanged();
Assert.False(canExecuteChangedRaised);
}
public void DispatchCommandShouldIgnoreInactiveCommandsInCanExecuteVote()
{
CompositeCommand activeAwareCommand = new CompositeCommand(true);
MockActiveAwareCommand commandOne = new MockActiveAwareCommand() { IsActive = false, IsValid = false };
MockActiveAwareCommand commandTwo = new MockActiveAwareCommand() { IsActive = true, IsValid = true };
activeAwareCommand.RegisterCommand(commandOne);
activeAwareCommand.RegisterCommand(commandTwo);
Assert.True(activeAwareCommand.CanExecute(null));
}
public void ActivityCausesActiveAwareCommandToRequeryCanExecute()
{
CompositeCommand activeAwareCommand = new CompositeCommand(true);
MockActiveAwareCommand command = new MockActiveAwareCommand();
activeAwareCommand.RegisterCommand(command);
command.IsActive = true;
bool globalCanExecuteChangeFired = false;
activeAwareCommand.CanExecuteChanged += delegate
{
globalCanExecuteChangeFired = true;
};
Assert.False(globalCanExecuteChangeFired);
command.IsActive = false;
Assert.True(globalCanExecuteChangeFired);
}
public void MultiDispatchCommandDoesNotExecutesInactiveRegisteredCommands()
{
CompositeCommand activeAwareCommand = new CompositeCommand(true);
MockActiveAwareCommand command = new MockActiveAwareCommand();
command.IsActive = false;
activeAwareCommand.RegisterCommand(command);
activeAwareCommand.Execute(null);
Assert.False(command.WasExecuted);
}
public void DispatchCommandDoesNotIncludeInactiveRegisteredCommandInVoting()
{
CompositeCommand activeAwareCommand = new CompositeCommand(true);
MockActiveAwareCommand command = new MockActiveAwareCommand();
activeAwareCommand.RegisterCommand(command);
command.IsValid = true;
command.IsActive = false;
Assert.False(activeAwareCommand.CanExecute(null), "Registered Click is inactive so should not participate in CanExecute vote");
command.IsActive = true;
Assert.True(activeAwareCommand.CanExecute(null));
command.IsValid = false;
Assert.False(activeAwareCommand.CanExecute(null));
}
public void MultiDispatchCommandExecutesActiveRegisteredCommands()
{
CompositeCommand activeAwareCommand = new CompositeCommand();
MockActiveAwareCommand command = new MockActiveAwareCommand();
command.IsActive = true;
activeAwareCommand.RegisterCommand(command);
activeAwareCommand.Execute(null);
Assert.True(command.WasExecuted);
}
public void UnregisterCommandDisconnectsIsActiveChangedDelegate()
{
CompositeCommand activeAwareCommand = new CompositeCommand(true);
MockActiveAwareCommand commandOne = new MockActiveAwareCommand() { IsActive = true, IsValid = true };
MockActiveAwareCommand commandTwo = new MockActiveAwareCommand() { IsActive = false, IsValid = false };
activeAwareCommand.RegisterCommand(commandOne);
activeAwareCommand.RegisterCommand(commandTwo);
Assert.True(activeAwareCommand.CanExecute(null));
activeAwareCommand.UnregisterCommand(commandOne);
Assert.False(activeAwareCommand.CanExecute(null));
}
public void RegisteringCommandTwiceThrows()
{
var compositeCommand = new CompositeCommand();
var duplicateCommand = new TestCommand();
compositeCommand.RegisterCommand(duplicateCommand);
compositeCommand.RegisterCommand(duplicateCommand);
}
public void RegisteringCommandWithNullThrows()
{
var compositeCommand = new CompositeCommand();
compositeCommand.RegisterCommand(null);
}
public void RegisteringCommandInItselfThrows()
{
var compositeCommand = new CompositeCommand();
compositeCommand.RegisterCommand(compositeCommand);
}