Introduction
This guide shows you how to build and test a Swift package.
GitHub-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 "Using GitHub-hosted runners."
Prerequisites
You should already be familiar with YAML syntax and how it's used with GitHub Actions. For more information, see "Workflow syntax for GitHub Actions."
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 workflow template
To get started quickly, add a workflow template to the .github/workflows
directory of your repository.
GitHub provides a workflow template for Swift that should work for most Swift projects. The subsequent sections of this guide give examples of how you can customize this workflow template.
-
On GitHub.com, navigate to the main page of the repository.
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Under your repository name, click Actions.
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If you already have a workflow in your repository, click New workflow.
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The "Choose a workflow" page shows a selection of recommended workflow templates. Search for "swift".
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Filter the selection of workflows by clicking Continuous integration.
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On the "Swift" workflow, click Configure.
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Edit the workflow as required. For example, change the branch on which the workflow will run.
-
Click Commit changes.
The
swift.yml
workflow file is added to the.github/workflows
directory of your repository.
Specifying a Swift version
To use a specific preinstalled version of Swift on a GitHub-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.
# This workflow uses actions that are not certified by GitHub. # They are provided by a third-party and are governed by # separate terms of service, privacy policy, and support # documentation. # GitHub recommends pinning actions to a commit SHA. # To get a newer version, you will need to update the SHA. # You can also reference a tag or branch, but the action may change without warning. name: Swift on: [push] jobs: build: name: Swift ${{ matrix.swift }} on ${{ matrix.os }} strategy: matrix: os: [ubuntu-latest, macos-latest] swift: ["5.2", "5.3"] runs-on: ${{ matrix.os }} steps: - uses: swift-actions/setup-swift@65540b95f51493d65f5e59e97dcef9629ddf11bf with: swift-version: ${{ matrix.swift }} - uses: actions/checkout@v4 - name: Build run: swift build - name: Run tests run: swift test
# This workflow uses actions that are not certified by GitHub.
# They are provided by a third-party and are governed by
# separate terms of service, privacy policy, and support
# documentation.
# GitHub recommends pinning actions to a commit SHA.
# To get a newer version, you will need to update the SHA.
# You can also reference a tag or branch, but the action may change without warning.
name: Swift
on: [push]
jobs:
build:
name: Swift ${{ matrix.swift }} on ${{ matrix.os }}
strategy:
matrix:
os: [ubuntu-latest, macos-latest]
swift: ["5.2", "5.3"]
runs-on: ${{ matrix.os }}
steps:
- uses: swift-actions/setup-swift@65540b95f51493d65f5e59e97dcef9629ddf11bf
with:
swift-version: ${{ matrix.swift }}
- uses: actions/checkout@v4
- 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
.
steps: - uses: swift-actions/setup-swift@65540b95f51493d65f5e59e97dcef9629ddf11bf with: swift-version: "5.3.3" - name: Get swift version run: swift --version # Swift 5.3.3
steps:
- uses: swift-actions/setup-swift@65540b95f51493d65f5e59e97dcef9629ddf11bf
with:
swift-version: "5.3.3"
- name: Get swift version
run: swift --version # Swift 5.3.3
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: actions/checkout@v4 - uses: swift-actions/setup-swift@65540b95f51493d65f5e59e97dcef9629ddf11bf with: swift-version: "5.3.3" - name: Build run: swift build - name: Run tests run: swift test
steps:
- uses: actions/checkout@v4
- uses: swift-actions/setup-swift@65540b95f51493d65f5e59e97dcef9629ddf11bf
with:
swift-version: "5.3.3"
- name: Build
run: swift build
- name: Run tests
run: swift test