public void TestSetProperty()
{
int propertyValue = 0;
var viewmodel = new TestViewModel();
String rPropertyName = null;
viewmodel.PropertyChanged += (s, e) => rPropertyName = e.PropertyName;
Assert.True(viewmodel.CallSetProperty(ref propertyValue, 123, "TestProperty"));
Assert.Equal("TestProperty", rPropertyName);
Assert.Equal(123, propertyValue);
rPropertyName = null;
propertyValue = 0;
Assert.False(viewmodel.CallSetProperty(ref propertyValue, 0, "TestProperty"));
Assert.Null(rPropertyName);
Assert.Equal(0, propertyValue);
rPropertyName = null;
propertyValue = 0;
Assert.True(viewmodel.CallSetProperty(ref propertyValue, 123, () => viewmodel.PropertyOne));
Assert.Equal("PropertyOne", rPropertyName);
Assert.Equal(123, propertyValue);
rPropertyName = null;
propertyValue = 0;
Assert.False(viewmodel.CallSetProperty(ref propertyValue, 0, () => viewmodel.PropertyOne));
Assert.Null(rPropertyName);
Assert.Equal(0, propertyValue);
}