public void When_ExplicitUpdateSourceTrigger_UpdateSource()
{
var source = new MyBindingSource {
IntValue = 42
};
var target = new MyControl();
target.SetBinding(MyControl.MyPropertyProperty, new Binding {
Source = source, Path = nameof(MyBindingSource.IntValue), Mode = BindingMode.TwoWay, UpdateSourceTrigger = UpdateSourceTrigger.Explicit
});
var sut = target.GetBindingExpression(MyControl.MyPropertyProperty);
Assert.AreEqual(42, source.IntValue);
Assert.AreEqual(42, target.MyProperty);
target.MyProperty = -42;
sut.UpdateSource();
Assert.AreEqual(-42, source.IntValue);
Assert.AreEqual(-42, target.MyProperty);
}
