public void Set_RegularProperty_RisesPropertyChanged()
        {
            var obj = TestObservableObject.CreateEmpty();

            Assert_PropertyChanged(obj, nameof(obj.TestProperty), () =>
            {
                obj.TestProperty = TestString;
            });
        }
        public void Set_PropertyByPropertyExpression_RisesPropertyChanged()
        {
            var obj = TestObservableObject.CreateEmpty();

            Assert_PropertyChanged(obj, nameof(obj.TestProperty), () =>
            {
                obj.SetTestPropertyByPropertyExpression(TestString);
            });
        }