Extensibility- Extend Existing Elements- Extension Methods

Learn how to extend BELLATRIX iOS elements using extension methods.

Example

using Bellatrix.Mobile.IOS.GettingStarted.Custom; using Microsoft.VisualStudio.TestTools.UnitTesting;  namespace Bellatrix.Mobile.IOS.GettingStarted {     [TestFixture]     public class ExtendExistingElementWithExtensionMethodsTests : IOSTest     {         [Test]         public void ButtonClicked_When_CallClickMethod()         {             var button = App.Components.CreateByName<Button>("ComputeSumButton");              button.SubmitButtonWithScroll();         }     } }

Explanations

namespace Bellatrix.Mobile.IOS.GettingStarted.Custom {     public static class ButtonExtensions     {         public static void SubmitButtonWithScroll(this Button button)         {             button.ToExists().ToBeClickable().WaitToBe();             button.ScrollToVisible(ScrollDirection.Down);             button.Click();         }     } }

One way to extend an existing element is to create an extension method for the additional action.

  1. Place it in a static class like this one.
  2. Create a static method for the action.
  3. Pass the extended element as a parameter with the keyword ‘this’.
  4. Access the native element through the WrappedElement property and the driver via WrappedDriver.

Later to use the method in your tests, add a using statement containing this class’s namespace.

using Bellatrix.Mobile.IOS.GettingStarted.Custom; using Microsoft.VisualStudio.TestTools.UnitTesting;  namespace Bellatrix.Mobile.IOS.GettingStarted

To use the additional method you created, add a using statement to the extension methods’ namespace.

button.SubmitButtonWithScroll();

Use the custom added submit button with scroll-to-visible behaviour.