There are times when we need our UI Test code to pass some information to our mobile app, not by typing it into a Text Field or a Text View but by sending it as a command-line argument or as a launch environment property. To pass a command-line launch argument or an environment key-value pair…
Read More UI Testing. Launch Arguments & Launch EnvironmentBy default, Xcode will automatically create a screenshot of the app if UI Test fails. If needed, we can also create a screenshot programmatically and include it in a Test Report with the help of the XCTAttachment class. In this tutorial, you will learn how to create a screenshot of a specific UI element as well…
Read More XCUIScreenshot – Creating Screenshots in UI TestIn this tutorial, you will learn how to create and present an alert dialog in Swift. An alert dialog in Swift is created using a UIAlertController class. The below Swift code snippets demonstrate how to: Create a new alert message using UIAlertController, How to present an alert dialog to the user, How to add one or more…
Read More How to Show an Alert in SwiftWhen we create a new UI Test Case class, Xcode will create a new Swift class that already contains some structure. The new UI Test Case class will extend the XCTestCase class and will already have a few default methods created. Below is a default template of a new UI Test Case class. UI Test Case Class…
Read More UI Test Case Class Default TemplateWhen writing unit tests, developers try to follow the F.I.R.S.T principle as much as possible. F.I.R.S.T is a combination of multiple principles. Let’s learn what these are. Fast The first letter in the F.I.R.S.T principle stands for – Fast. Unit tests are small pieces of code that perform one, specific task. Because unit tests are…
Read More The F.I.R.S.T. Principle in Unit TestingIn this quick Swift tutorial, I wanted to share how to convert a Data object into String. This is very helpful when you want to print out in Xcode console the response string returned in the body of the HTTP response. This is of course if you know the HTTP response body contains a JSON/text/XML…
Read More Convert Data to String in SwiftThe addTeardownBlock(_:) runs right after the test method ends and before the instance’s tearDownWithError() method is called. Below is an example of a TestCase class that does not test anything and only demonstrates the order in which the setUp() and tearDown() methods are called. When will the addTeardownBlock(_:) run? The addTeardownBlock will run after the test method is…
Read More addTeardownBlock Example in XCTestCaseIn this tutorial, you will learn how to create UISlider in Swift programmatically. UISlider is a UI control that is used to select a single value from a continuous range of values. Below is an image of UISlider control. Create UISlider Programmatically To create UISlider control programmatically, you need to create a new instance of…
Read More Create UISlider in Swift ProgrammaticallyIn this tutorial, you will learn how to create a UIStepper in Swift programmatically. UIStepper is a control that is used to increment or decrement a numeric value and in this tutorial, you will learn how to create and control its behavior. You will learn how to: Call a custom function when UIStepper value changes, Make…
Read More UIStepper in Swift ProgrammaticallyIn this tutorial, you will learn how to create both a one-dimensional and multidimensional arrays in Swift. After reading this tutorial, you might also be interested in learning how to use FlatMap and Map when working with arrays. How to Use flatMap in Swift. Code Examples, How to Use map(_:) in Swift. Code Examples, Ways…
Read More Multidimensional Array Example in SwiftIn this tutorial, you will learn how to create a UICollectionView programmatically in Swift. You will learn how to create a new UICollectionView with UICollectionViewFlowLayout and will learn how to make it display a few cells. You will also learn how to make your UIViewController conform to a UICollectionViewDelagate to handle events when user taps on…
Read More Create UICollectionView Programmatically in SwiftIn this tutorial, you will learn how to create an instance of @LoadBalanced RestTemplate and make it communicate with an internal microservice. For a step-by-step series of video lessons, please check this page: Spring Boot Microservices and Spring Cloud. Create RestTemplate Bean To create an instance of RestTemplate, you will need to first make sure…
Read More @LoadBalanced RestTemplate Call Internal MicroserviceIn this tutorial, you will learn how to add days, months or years to the current date in Swift. To work with dates I will use Date(), DateComponents() and Calendar objects. I will first get the today’s current date and then will use the DateComponents() to add to a current date another day, month or…
Read More Add Days, Months, Years to Current Date in SwiftIn this Swift tutorial, you will learn how to encode UIImage data to Base64 string. To verify that the UIImage data was correctly encoded into the Base64 string, we will decode the Base64 string back into image data and will create a new UIImage using this data. Create UIImage Before I can encode existing image…
Read More UIImage Base64 Encoding and Decoding in SwiftIn this tutorial, you will learn how to load an image from a remote URL in Swift and display it in your mobile app. If you are new to working with images have a look at the following two tutorials first: Create UIImage and UIImageView programmatically, Create UIImageView with rounded corners in Swift. Create an…
Read More Load Image From Remote URL in Swift