public void RaisePropertyChanged()
{
WebContextMock context = new WebContextMock();
string propertyName = string.Empty;
PropertyChangedEventArgs args = null;
PropertyChangedEventHandler handler = (sender, e) =>
{
Assert.IsNull(args,
"There should only be a single event. The args should be null.");
args = e;
Assert.AreEqual(propertyName, e.PropertyName,
"Property names should be equal.");
};
((INotifyPropertyChanged)context).PropertyChanged += handler;
ExceptionHelper.ExpectArgumentNullException(
() => context.RaisePropertyChangedMock(null), "propertyName");
ExceptionHelper.ExpectArgumentNullException(
() => context.RaisePropertyChangedMock(string.Empty), "propertyName");
propertyName = "Property 1";
context.RaisePropertyChangedMock(propertyName);
Assert.IsNotNull(args,
"A change event should have occurred.");
args = null;
propertyName = "Property 2";
context.RaisePropertyChangedMock(propertyName);
Assert.IsNotNull(args,
"A change event should have occurred.");
((INotifyPropertyChanged)context).PropertyChanged -= handler;
}
public void RaisePropertyChanged()
{
WebContextMock context = new WebContextMock();
string propertyName = string.Empty;
PropertyChangedEventArgs args = null;
PropertyChangedEventHandler handler = (sender, e) =>
{
Assert.IsNull(args,
"There should only be a single event. The args should be null.");
args = e;
Assert.AreEqual(propertyName, e.PropertyName,
"Property names should be equal.");
};
((INotifyPropertyChanged)context).PropertyChanged += handler;
ExceptionHelper.ExpectArgumentNullException(
() => context.RaisePropertyChangedMock(null), "propertyName");
ExceptionHelper.ExpectArgumentNullException(
() => context.RaisePropertyChangedMock(string.Empty), "propertyName");
propertyName = "Property 1";
context.RaisePropertyChangedMock(propertyName);
Assert.IsNotNull(args,
"A change event should have occurred.");
args = null;
propertyName = "Property 2";
context.RaisePropertyChangedMock(propertyName);
Assert.IsNotNull(args,
"A change event should have occurred.");
((INotifyPropertyChanged)context).PropertyChanged -= handler;
}
