A simple GitHub Action workflow that runs tests for the specified application

xctest-workflow.yml

name: iOS Test Workflow
on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master
jobs:
  build:
    name: Build and Test default scheme using iPhone/iPad simulator
    runs-on: macos-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2
      - name: Force Xcode 11
        run: sudo xcode-select -switch /Applications/Xcode_11.7.app
      - name: iOS build setup
        run: >-
          xcodebuild test -workspace TestApp.xcodeproj/project.xcworkspace
          -scheme TestApp -destination 'platform=iOS Simulator,name=iPhone
          11,OS=13.7'
      - name: testing ... iPhone 11
        run: >-
          xcodebuild test -workspace TestApp.xcodeproj/project.xcworkspace
          -scheme TestApp -destination 'platform=iOS Simulator,name=iPhone
          11,OS=13.7'
      - name: testing ... iPhone 11 Pro Max
        run: >-
          xcodebuild test -workspace TestApp.xcodeproj/project.xcworkspace
          -scheme TestApp -destination 'platform=iOS Simulator,name=iPhone 11
          Pro Max,OS=13.7'
      - name: testing ... iPad Air
        run: >-
          xcodebuild test -workspace TestApp.xcodeproj/project.xcworkspace
          -scheme TestApp -destination 'platform=iOS Simulator,name=iPad Air
          (3rd generation),OS=13.7'
      - name: testing ... iPad Pro 12.9
        run: >-
          xcodebuild test -workspace TestApp.xcodeproj/project.xcworkspace
          -scheme TestApp -destination 'platform=iOS Simulator,name=iPad Pro (12.9-inch) (4th generation),OS=13.7'

XCTest GitHub Action Workflow

This snippet of code is a simple and easy introduction to CI automation of XCTests on GitHub Actions

Workflow definition

From line 1–8 we’re giving a name to the workflow itself and we’re instructing that it should run every time there is a push to the master branch or a pull-request has been issued on the master branch. You can add more branches or customise when you want it to run, you can checkout all the possible events you have in the GH Actions docs.

Workflow job

From line 9–41 you’re defining what actually is going to be your workflow, in this snippet I’m keeping stuff simple but you can define more jobs to run on the events specified from line 1–5, more on GH Actions docs.
As you can see I’m calling the job “build” and I’m instructing that it should run on a macOS operating system. Immediately after that I’m defining 5 different steps that will test my code on 5 different iOS devices, the core command here is

xcodebuild test -workspace TestApp.xcodeproj/project.xcworkspace -scheme TestApp -destination 'platform=iOS Simulator, name=iPad Air (3rd generation),OS=13.7'

This command is going to test all my code contained in my test suite on an iPad Air simulator.