This article introduces UI testing in Xamarin.then from visual studio go to: Tools > Android > Android SDK manager > Tools > make sure that 'Android emulator' version is 27.0.1 or higher, if not, you will find in the same screen a button below to update it.However with that said, Visual Studio on the Mac is coming along very nicely so if you are doing a lot of development on a Mac like I do, I almost live 100 percent in Visual Studio on the Mac, so theyre both great experiences to use.' And Xamarin Live Player, no doubt, will continue to generate oohs and aahs from his audiences.Unit tests are great, but they don’t cover two important areas - have we used the correct controls on our view and bound them correctly, and does our app run on the device. This means we’ve written the bulk of our code and we’ve also written unit tests for it, giving us a degree of confidence that our code works. Your subscription includes virtually all Microsoft software, plus Azure credits, Pluralsight courses, technical support and more.One of the great things about the MVVM design pattern is that it allows us to maximize the code in our cross-platform model and view-model layers. Whether it’s for a phone, desktop, or the cloud, Visual Studio makes it easier to build great software on PC and Mac. Visual Studio Enterprise is an integrated, end-to-end solution for teams of any size with demanding quality and scale needs.Automated UI testing also allowed for better time usage with tests being run overnight and developers discovering if they’ve broken anything the next morning.For desktop apps, UI testing was reasonably simple - launch the app and test it, maybe testing on a few different screen sizes, but always on one OS with maybe one or two different versions as desktop OSes don’t change often. This kind of testing started out life for desktop apps, where the aim was to make testing more reliable and cheaper - after all, humans are expensive and after testing the same screen many, many times they can get bored and make mistakes or miss problems. To Ensure That Both IDEs (Xamarin Studio On The Mac, And Visual Studio On Windows) Are On.The concept behind UI testing is simple - run your app and have something interact with it using the user interface components (such as tapping buttons or entering text in text boxes), and validate that everything is working by ensuring the app doesn’t crash and that the results of the users’ actions are shown on the UI as expected.
Visual Studio Test On Devices Mac Is ComingWriting UI tests using Xamarin UITestYou write UI tests in the same way that you write a unit test – you decide what you want to test, then write some code to create a test. A human can’t test on a wide range of devices without needing a lot of time or lots of humans involved in the process (expensive) and without them all going mad as they install the app on another device and run the same test for the millionth time. On iOS this isn’t too bad - we only need to support a small number of OS versions (maybe the current one and the previous) and a small number of different devices, but on Android, as we’ve already seen it’s a mess with multiple OS versions in regular use, a huge range of screen sizes available, and worst of all customizations to the OS from both the hardware manufacturer and carrier.This is why UI testing is hugely important for mobile apps. We also have different hardware with different screen sizes. We want to support two major OSes with our cross-platform app, with multiple versions. UITest is a layer on top of this that allows you to write your tests in C# and run them using NUnit. For testing Android apps, you can use either Windows or Mac, but for testing iOS apps you’ll need to use a Mac - it’s not supported on Windows at the moment.Xamarin UITest is based off a testing framework called Calabash which was written in Ruby and is fully open source and maintained by Xamarin. FrameworkGoogle’s testing framework for Android apps has deep integration with Android.Apple’s UI testing framework has deep integration with iOS.Framework based off of Selenium (a web UI testing framework).Xamarin’s testing framework heavily integrated into Visual Studio for Windows (Android) and Mac (iOS and Android).For this article, I’ll focus on Xamarin UITest, which is well integrated into Visual Studio. Many different frameworks are around for testing, and the table below shows some of these. My publisher software for macName your project 'Countr.UITests' and click 'OK' (Windows) or 'Create' (Mac).Adding a new UITest project using Visual Studio 2017Once the test project has been added it’ll install two NuGet packages that UITest needs - NUnit and Xamarin.UITest. For Mac, right-click on the solution and select 'Add→Add New Project…', select 'Multiplatform→Tests' on the left and 'UI Test App' from the middle and tap 'Next'. Creating the UI test projectAdd a new UITest project to the Countr solution using Visual Studio for Windows by right-clicking on the solution, selecting 'Add→New Project…' and from the 'Add new project' dialog select 'Visual C#→Cross-Platform' on the left and select 'UI Test App' from the middle. For our UI tests, we also need a new project that contains and runs our UI tests. When we built the model layer in our app, we added a new unit test project that we used for unit tests for both the model and view model layers. You can download the source code from this book here, so download this and open the completed Countr solution from chapter 13. ![]() This fixture has a setup method that uses the AppInitializer to start the app before each test, and a single test that calls the Screenshot method on the IApp returned from the app initializer to take a screenshot.Setting up your Android apps for UI testingBy default, Xamarin Android apps are configured in debug builds to use the shared mono runtime. This means that we have two test fixtures - one Android and one iOS. This test fixture has a parameterized constructor that takes the platform to run the tests on as one of the values from the Platform enum, either Platform.iOS or Platform.Android, and has two TestFixture attributes, one for each platform. Unfortunately, when doing UI tests you can’t use the shared runtime, and you’ve two options: Rather than bundling it in, for debug builds you can use a shared version which is installed separately, making your app smaller. Net framework, and this is a large piece of code bundled in your app. Net that Xamarin is based on) to provide the. Xamarin Android apps use a mono runtime (mono being the cross-platform version of. After all, when you build a release version it’s usually for deployment such as to the store, and your users won’t have the shared mono runtime installed. Release builds: Release builds don’t have the shared mono runtime turned on. Untick the 'Use Shared Mono Runtime' box to turn this off, but be aware that this increases your build times. In Visual Studio for Windows you’ll find it in the 'Android Options' tab at the top of the 'Packaging' page, on Mac it’s on the 'Android Build' tab at the top of the 'General' page. ![]()
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