public void When_PropertyChanged_Suppressed_Then_SetPropertyValue_Does_Not_Fire_PropertyChanged()
{
// Arrange
var eventCount = 0;
var sut = new CollectionChangedHelper<int>(this);
sut.PropertyChanged += (sender, args) => ++eventCount;
var age = 10;
// Act
using (sut.SuppressPropertyChanged())
sut.SetPropertyValue(ref age, 17, "Age", "UserData-1");
// Assert
Assert.AreEqual(0, eventCount);
}
public void When_SetPropertyValue_New_Value_Then_Fires_PropertyChanged()
{
// Arrange
var propertyChanges = new List<PropertyChangedEventArgsEx>();
var sut = new CollectionChangedHelper<int>(this);
sut.PropertyChanged += (sender, args) => propertyChanges.Add((PropertyChangedEventArgsEx) args);
var age = 10;
var expectedPropertyChange = new PropertyChangedEventArgsEx("Age", "UserData-1");
// Act
sut.SetPropertyValue(ref age, 17, "Age", "UserData-1");
// Assert
Assert.AreEqual(1, propertyChanges.Count);
Assert.AreEqual(expectedPropertyChange, propertyChanges[0]);
}
