iOS App with CocoaPods Test Automation with GitHub Actions CI

If you write tests for your app at some point you will want to run them in an automated way to increase the effectiveness and ease of use of your tests. When already hosting your project on GitHub, then GitHub Actions is the easiest way to add CI (continuous integration) to your app project.

GitHub Actions workflow file (iOS CI)

Triggers

The workflow is triggered for each commit to the main branch and also for each PR (Pull request) to main. It can be changed to your liking. Triggers for github

Caching

To speed of the workflow is added especially when using Cocoapods this help a lot. The key specifies which cache to look for. When using the hashed Podfile.lock file the cache is used from another build with exactly the same Podfile.lock file. The restore-key is used as an alternative if an exact key match couldn't be found

CocoaPod Install

This step is only needed when using CocoaPods when using SPM (Swift Package Manager) this step can be omitted.

Build

The build step is no requirement for the test step to work but I always like to see if the Release configuration of the app even builds in the neutral environment of the build server. This way can be ensured that there a no dependencies of the project that weren't pushed to the repository.

Test

The actual test step running the tests. It is important to specify -workspace attribute with your YourAppName.xcworkspace (this is only needed when using CocoaPods). Also specify the scheme to be run with the -scheme attribute. GitHub Actions unfortunately only supports simulators so that is why only the simulators are targeted.

Special Mention

This script was developed for the XPO App. Go check out the app.

Floating Action Button - Hide on scroll down - SwiftUI

I wanted to create a floating action button in SwiftUI which disappears or hides when scrolling down. For that a few tricks where needed.

Final Look

It is not possible to get the ScrollEvent directly from SwiftUI so the trick is to use a transperant GeometryReader which changes its origin position compared to a defined coordinate space (inspired by this) when scrolling down. When using the origin as offset I can simply determine whether the user scrolls up or down. Here is the code:

Note: I still have a small inconsistency when scrolling to the bottom of the list as the overscroll of the ScrollView causes the last action to be a scroll up which leads to that the Floating action button is showing up when scrolled all the way to the bottom.

25th December solution - Advent of Code 2020 - swift

As part of Advent of Code (adventofcode.com) each day there are two programming tasks to be solved. All solutions are listed here.

I am writing the solutions in Swift with the Playground environment in xCode.

Tasks - 25th December 2020

1. Unlock made up encryption.

For a more detailed description of the tasks check this out.

The cardsPublicKey and doorsPublicKey variables the values given to each member by Advent of Code, which is individual for each user.

Here is the solution:

Overview of all solutions of 2020:

Advent of Code 2020 Solutions Overview