Xamarin.Forms.Mocks examples

Test.cs

//Dynamically load XAML
// NOTE: At the top, include using Xamarin.Forms.Xaml;
[Test]
public void LoadFromXaml()
{
    var label = new Label();
    label.LoadFromXaml("<Label Text=\"Woot\" />");
    Assert.AreEqual("Woot", label.Text);
}

//Unit test navigation
[Test]
public async Task Push()
{
    var root = new ContentPage();
    var page = new ContentPage();
    await root.Navigation.PushAsync(page);
    Assert.AreEqual(root.Navigation.NavigationStack.Last(), page);
}

//Unit test animations
[Test]
public async Task FadeTo()
{
    var view = new BoxView();
    await view.FadeTo(0);
    Assert.AreEqual(0, view.Opacity);
}

//Unit test a markup extension
[Test]
public void MarkupExtension()
{
    var label = new Label();
    label.LoadFromXaml("<Label xmlns:f=\"clr-namespace:Xamarin.Forms.Mocks.Tests;assembly=Xamarin.Forms.Mocks.Tests\" Text=\"{f:Terrible}\" />");
    Assert.AreEqual("2016", label.Text); //amirite?
}

//Here is the markup extension
public class TerribleExtension : IMarkupExtension<string>
{
    public string ProvideValue(IServiceProvider serviceProvider)
    {
        return "2016";
    }

    object IMarkupExtension.ProvideValue(IServiceProvider serviceProvider)
    {
        return ProvideValue(serviceProvider);
    }
}