public void TwoWayBinding(bool binderActiveDuringEvent, bool expectUpdated)
{
// Arrange
_binder.Control(_userControl).Property(c => c.Text).Bind(vm => vm.StringValue);
if (!binderActiveDuringEvent)
{
_binder.Dispose();
}
// Act & Assert
_userControl.Text = "value #1";
var expected = expectUpdated ? _userControl.Text : null;
Assert.That(_viewModel.StringValue, Is.EqualTo(expected));
_viewModel.StringValue = "value #2";
expected = expectUpdated ? _viewModel.StringValue : "value #1";
Assert.That(_userControl.Text, Is.EqualTo(expected));
}
public void ObserveControlAndSendToCommand(bool commandEnabled, bool binderActiveDuringEvent, bool expectUpdated)
{
// Arrange
string mouseMoveButton = null;
_command.ExecuteAction = parm => { mouseMoveButton = parm; };
_command.CanExecuteCondition = vm => commandEnabled;
_binder.Observe(_button.MouseMoveButton).Execute(_command);
// Act
if (!binderActiveDuringEvent)
{
_binder.Dispose();
}
_button.PerformMouseMove(new MouseEventArgs(MouseButtons.Right, 0, 0, 0, 0));
var expected = expectUpdated ? "Right" : null;
// Assert
Assert.That(mouseMoveButton, Is.EqualTo(expected));
}
public void ActionIsNotCalledAfterSourceIsDisposed()
{
// Arrange
var callCount = 0;
_binder.OnPropertyChanged(vm => vm.IntValue).Subscribe(x => callCount++);
_binder.Dispose();
// Act
_viewModel.IntValue = 3;
// Assert
Assert.That(callCount, Is.EqualTo(0));
}
public void TargetUpdatedWhenSourceChanges(bool binderActiveDuringEvent, bool expectUpdated)
{
// Arrange
const string originalValue = "value #1";
const string updatedValue = "value #2";
_viewModel.StringValue = originalValue;
_binder.Target(_textBox).Property(c => c.Text).Get(vm => vm.StringValue);
var expected = originalValue;
Assert.That(_textBox.Text, Is.EqualTo(expected), "Should immediately update target property to source value");
if (!binderActiveDuringEvent)
{
_binder.Dispose();
}
// Act
_viewModel.StringValue = updatedValue;
// Assert
expected = expectUpdated ? updatedValue : originalValue;
Assert.That(_textBox.Text, Is.EqualTo(expected));
}
public void AfterEach()
{
_binder.Dispose();
_button.Dispose();
}