Initialising a view controller from a test using Swift

Testing is important, so we really need to get this right

Testing is extremely important in software, but there are few guides on how you can manipulate a view controller to help you out. This might be just the right guide for you!

Photo by tanialee gonzalez on Unsplash

Difficulty: Beginner | Easy | Normal | Challenging

Prerequisites:

• Be able to produce a “Hello, World!” iOS application (guide HERE)
• Have some understanding of basic testing in Swift

Terminology

storyboard: A way to graphically lay out the UI in Xcode

unit testing: Software testing where individual units or components of the software is tests

view controller: A view controller is an intermediary between the views it manages and the data of your app

The Setup

Creating a basic view controller

The setup here is simple: create a basic “Hello, World!” style application with a single UILabel that is centred on the view controller.

Now we need to give the view controller an identifier, that is set the Storyboard ID to ViewController (which is set in…