building-and-testing-swift.md

title	intro	redirect_from	versions	type	topics	shortTitle
Building and testing Swift	You can create a continuous integration (CI) workflow to build and test your Swift project.	/actions/guides/building-and-testing-swift	fpt ghes ghec * * *	tutorial	CI Swift	Build & test Swift

{% data reusables.actions.enterprise-github-hosted-runners %}

Introduction

This guide shows you how to build and test a Swift package.

{% data variables.product.prodname_dotcom %}-hosted runners have a tools cache with preinstalled software, and the Ubuntu and macOS runners include the dependencies for building Swift packages. For a full list of up-to-date software and the preinstalled versions of Swift and Xcode, see "AUTOTITLE."

Prerequisites

You should already be familiar with YAML syntax and how it's used with {% data variables.product.prodname_actions %}. For more information, see "AUTOTITLE."

We recommend that you have a basic understanding of Swift packages. For more information, see "Swift Packages" in the Apple developer documentation.

Using a Swift starter workflow

{% data reusables.actions.starter-workflow-get-started %}

{% data variables.product.prodname_dotcom %} provides a starter workflow for Swift that should work for most Swift projects. The subsequent sections of this guide give examples of how you can customize this starter workflow.

{% data reusables.repositories.navigate-to-repo %} {% data reusables.repositories.actions-tab %} {% data reusables.actions.new-starter-workflow %}

1. The "Choose a workflow" page shows a selection of recommended starter workflows. Search for "swift".
2. Filter the selection of workflows by clicking Continuous integration.
3. On the "Swift" workflow, click Configure.

{%- ifversion ghes %}

If you don't find the "Swift" starter workflow, copy the following workflow code to a new file called swift.yml in the .github/workflows directory of your repository.

name: Swift

on:
  push:
    branches: [ "main" ]
  pull_request:
    branches: [ "main" ]

jobs:
  build:
    runs-on: macos-latest

    steps:
    - uses: {% data reusables.actions.action-checkout %}
    - name: Build
      run: swift build -v
    - name: Run tests
      run: swift test -v

{%- endif %}

1. Edit the workflow as required. For example, change the branch on which the workflow will run.
2. Click Commit changes.

{% ifversion fpt or ghec %} The swift.yml workflow file is added to the .github/workflows directory of your repository. {% endif %}

Specifying a Swift version

To use a specific preinstalled version of Swift on a {% data variables.product.prodname_dotcom %}-hosted runner, use the swift-actions/setup-swift action. This action finds a specific version of Swift from the tools cache on the runner and adds the necessary binaries to PATH. These changes will persist for the remainder of a job. For more information, see the swift-actions/setup-swift action.

If you are using a self-hosted runner, you must install your desired Swift versions and add them to PATH.

The examples below demonstrate using the swift-actions/setup-swift action.

Using multiple Swift versions

You can configure your job to use multiple versions of Swift in a matrix.

{% data reusables.actions.actions-not-certified-by-github-comment %}

{% data reusables.actions.actions-use-sha-pinning-comment %}

name: Swift

on: [push]

jobs:
  build:
    name: {% raw %}Swift ${{ matrix.swift }} on ${{ matrix.os }}{% endraw %}
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest]
        swift: ["5.2", "5.3"]
    runs-on: {% raw %}${{ matrix.os }}{% endraw %}
    steps:
      - uses: swift-actions/setup-swift@65540b95f51493d65f5e59e97dcef9629ddf11bf
        with:
          swift-version: {% raw %}${{ matrix.swift }}{% endraw %}
      - uses: {% data reusables.actions.action-checkout %}
      - name: Build
        run: swift build
      - name: Run tests
        run: swift test

Using a single specific Swift version

You can configure your job to use a single specific version of Swift, such as 5.3.3.

{% raw %}

steps:
  - uses: swift-actions/setup-swift@65540b95f51493d65f5e59e97dcef9629ddf11bf
    with:
      swift-version: "5.3.3"
  - name: Get swift version
    run: swift --version # Swift 5.3.3

{% endraw %}

Building and testing your code

You can use the same commands that you use locally to build and test your code using Swift. This example demonstrates how to use swift build and swift test in a job:

steps:
  - uses: {% data reusables.actions.action-checkout %}
  - uses: swift-actions/setup-swift@65540b95f51493d65f5e59e97dcef9629ddf11bf
    with:
      swift-version: "5.3.3"
  - name: Build
    run: swift build
  - name: Run tests
    run: swift test