In this XCTest tutorial, you will learn how to write a unit test that will test if UIButton is connected to @IBOutlet and has @IBAction assigned. For this tutorial, I will create a Single View application project. I will use the default View Controller that XCode creates for all new projects and I will position…

Read More XCTest. Test if UIButton is Connected And Has Action

When we take the Test Driven Development(TDD) approach to write code we eventually ask ourselves a couple of questions: Have I covered all possible use cases? Have I written enough unit tests? What helps me is writing a bulleted list of functional requirements for the feature I am developing. Having a clear list of things…

Read More Swift TDD. How Many Unit Tests to Write?

When writing a Unit test for a piece of code, we need to isolate this piece of code from all other dependencies it has. These dependencies are objects of other classes that do not need to be tested in this particular unit test. For example, a piece of code we are unit testing might depend…

Read More Test Doubles in Swift – Dummy, Stub, Fake, Mock and Spy

In this short tutorial, you will learn how to set a different font on UIButton in Swift programmatically. There are lots of different customization you can with UIButton. For example, you might be also interested to learn how to create UIButton and change its style, background color, tint color and make it call a function…

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This blog post will give you a brief introduction to a Test-Driven Development(TDD) in Swift and will demonstrate how you can create a very basic Unit test in Swift to test a User Model Struct that holds the details of the Account Registration form. Assume that you need to follow the Test-Driven development approach to…

Read More Swift Unit Test of User Registration Model

In this tutorial, you will learn how to create UIButton programmatically. You will also learn how to do the basic customization of UIButton like setting button tint color, background color and making your button call a function when tapped. Create UIButton A new UIButton can be created of different types: ButtonType.custom, ButtonType.system, ButtonType.detailDisclosure, ButtonType.infoLight, ButtonType.infoDark,…

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In this tutorial, you will learn how to underline text on UILabel in Swift programmatically. To make the text on UILabel underlined we will need to use the NSMutableAttributedString together with NSUnderlineStyleAttributeName. The Swift code snippet below demonstrates how to create a new UILabel programmatically and then use the NSMutableAttributedString to underline the text on the label. Create a…

Read More Underline Text on UILabel in Swift

In this Spring Security tutorial, you will learn how to use the @PreAuthorize annotation to secure method invocation. You can use the @PreAuthorize annotation to secure either method in a Controller class or a method in a service layer class. There are other useful method level security annotations like the ones below. It is useful…

Read More Spring Security @PreAuthorize Annotation Example