MVVM Light binding framework for Xamarin supports deep paths with changing objects! Passed

gistfile1.txt

[Test]
public void BindingDeepPath_DeepSourceExistingPathChangingObjects_NoError()
{
    VmSource = new TestViewModel
    {
        Nested = new TestViewModel
        {
            Nested = new TestViewModel
            {
                Model = new TestModel
                {
                    MyProperty = "Initial value"
                }
            }
        }
    };

    VmTarget = new TestViewModel();

    var binding = new Helpers.Binding<string, string>(
        VmSource,
        () => VmSource.Nested.Nested.Model.MyProperty,
        VmTarget,
        () => VmTarget.TargetProperty);

    Assert.AreEqual(VmSource.Nested.Nested.Model.MyProperty, VmTarget.TargetProperty);
    var newValue = DateTime.Now.Ticks.ToString();
    VmSource.Nested.Nested.Model.MyProperty = newValue;
    Assert.AreEqual(VmSource.Nested.Nested.Model.MyProperty, VmTarget.TargetProperty);

    const string value2 = "Value 2";

    VmSource.Nested = new TestViewModel
    {
        Nested = new TestViewModel
        {
            Model = new TestModel
            {
                MyProperty = value2
            }
        }
    };

    Assert.AreEqual(value2, VmTarget.TargetProperty);

    const string value3 = "Value 3";

    VmSource.Nested.Nested = new TestViewModel
    {
        Model = new TestModel
        {
            MyProperty = value3
        }
    };

    Assert.AreEqual(value3, VmTarget.TargetProperty);

    const string value4 = "Value 4";

    VmSource.Nested.Nested.Model = new TestModel
    {
        MyProperty = value4
    };

    Assert.AreEqual(value4, VmTarget.TargetProperty);

    const string value5 = "Value 5";

    VmSource.Nested.Nested.Model.MyProperty = value5;

    Assert.AreEqual(value5, VmTarget.TargetProperty);
}