The value of ntinueAfterFailure is set to NO as a default. This method is called before the invocation of each test method in the class. In the test class structure, the provided setUp method includes two differences from setUp in a unit test class. Similar operations and programming methodology is used overall, with differences given the basic notions of the UI testing APIs and how they operate that were described in User Interface Testing. Measure that the response matches or does not match the expected for a pass/fail result.Ĭreating UI tests with XCTest is an extension of the same programming model as creating unit tests. Tap or click the element to elicit a response. Know the expected behavior of the element as reference. UI tests fundamentally operate on the level of events and responses. UI tests operate at the surface space of the app and tend to integrate a lot of low level functionality into what the user sees as presentation and response. When done with the actions you want to test, stop UI recording.ĪPI tests can have both functional and performance aspects, and so can UI tests. Xcode captures the actions into source in the body of the function. Exercise the app doing a sequence of UI actions. In the template file that is created, place the cursor into the test function. Using the test navigator, create an UI testing target. UI recording is also useful for exploring new UI or for learning how to write UI test sequences. It generates source code into a test implementation file that can be edited to construct tests or playback a particular use scenario. UI tests are based on the implementation of three new classes: Your test code runs as a separate process, synthesizing events that UI in your app responds to. This enables your tests to see the app the same way a user does, exposing UI problems that users encounter. UI testing exercises your app's UI in the same way that users do without access to your app's internal methods, functions, and variables. Unit testing enables you to work within your app's scope and allows you to exercise functions and methods with full access to your app's variables and state. UI testing differs from unit testing in fundamental ways. macOS needs permission granted to a special Xcode Helper app (prompt automatically on first use). IOS devices need to be enabled for development and connected to a trusted host. You are prompted for this automatically on your first use of UI tests. MacOS needs permissions granted to a special Xcode Helper app. You'll need Xcode 7, macOS 10.11, and iOS 9 (or later versions). UI testing depends upon services and APIs not only in the development tools but in the OS platforms. UI testing works by finding an app’s UI objects with queries, synthesizing events and sending them to those objects, and providing a rich api enabling you to examine the UI objects properties and state to compare them against the expected state. When you create the UI test target, you specify the app that your tests will address. You create a UI test target for your app then Xcode creates a default UI test group and implementation file for you with an example test method template in the implementation file. UI testing uses that data to perform its functions.Ĭreating UI tests in source code is similar to creating unit tests. Accessibility is integrated with both UIKit and AppKit and has APIs that allow you to fine-tune behaviors and what is exposed for external use. It includes a rich set of semantic data about the UI that users can use can use to guide them through using your app. XCTest is fully compatible with both Objective-C and Swift.Īccessibility is the core technology that allows disabled users the same rich experience for iOS and macOS that other users receive. You also get continuous integration via Xcode Server and xcodebuild. You use XCTest assertions to validate that expected outcomes are true. You create a UI test target, and you create UI test classes and UI test methods as a part of your project. Creating and using UI testing expands upon what you know about using XCTest and creating unit tests. XCTest provides the framework for UI testing capabilities, integrated with Xcode. UI tests rests upon two core technologies: the XCTest framework and Accessibility. Test reports are enhanced to provide detailed information about UI tests, including snapshots of the state of the UI at test failures. This is a great way to quickly get started writing UI tests. UI testing includes UI recording, which gives you the ability to generate code that exercises your app's UI the same way you do, and which you can expand upon to implement UI tests. UI testing gives you the ability to find and interact with the UI of your app in order to validate the properties and state of the UI elements.
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