Add Swift CI template

python-ci/README.md

@@ -30,6 +30,8 @@ This template:
 3. Runs pytest unit tests.
 4. Automatically annotates the build based on junit test output
 
+The runtime environment uses the official [Python Docker image](https://hub.docker.com/_/python) with the latest version.
+
 ## Next steps
 
 After you select **Use template**, you’ll:

swift/README.md

@@ -0,0 +1,43 @@
+---
+title: CI for Swift
+description: Build, lint, and test a Swift project using SwiftLint and XCTest.
+author: Buildkite
+languages: ["Swift"]
+use_cases: ["CI", "Mobile", "Web"]
+platforms: ["Docker", "macOS", "iOS"]
+tools: ["SwiftLint"]
+primary_emojis: [":swift:"]
+---
+
+# CI for Swift
+
+This template gives you a continuous integration (CI) pipeline that lints, tests, and builds a Swift project.
+
+At a glance:
+
+- For [Swift](https://www.swift.org/) projects
+- Requires [Docker](https://docs.docker.com/get-docker/)
+- Uses the [Swift Package Manager](https://swift.org/package-manager/)
+- Lints code with [SwiftLint](https://github.com/realm/SwiftLint)
+- Tests code using [XCTest](https://developer.apple.com/documentation/xctest)
+
+## How it works
+
+This template:
+
+1. Builds your Swift project, caching dependencies for subsequent steps.
+2. Lints the code with SwiftLint.
+3. Runs tests with XCTest.
+
+The runtime environment uses the official [Swift Docker image](https://hub.docker.com/_/swift) with the latest version.
+
+## Next steps
+
+After you select Use template, you’ll:
+
+1. Connect the Git repository with your Swift project.
+2. Modify the commands if necessary.
+3. Configure the compute—run locally, on-premises, or in the cloud.
+4. Run the pipeline.
+
+You can then play around with the pipeline settings. For example, run the pipeline locally while you iterate on the definition or set a schedule to trigger a nightly build.

swift/example-project/.gitignore

@@ -0,0 +1,12 @@
+.DS_Store
+/.build
+/Packages
+xcuserdata/
+DerivedData/
+.swiftpm/configuration/registries.json
+.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
+.netrc
+
+# Buildkite artifacts
+.cache
+cache.tgz

swift/example-project/Package.resolved

@@ -0,0 +1,14 @@
+{
+  "pins" : [
+    {
+      "identity" : "example-package-figlet",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/example-package-figlet",
+      "state" : {
+        "branch" : "main",
+        "revision" : "166eef46de0b094d6d1966e749f727d6c4beba0e"
+      }
+    }
+  ],
+  "version" : 2
+}

swift/example-project/Package.swift

@@ -0,0 +1,29 @@
+// swift-tools-version: 5.9
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "MyLibrary",
+    products: [
+        // Products define the executables and libraries a package produces, making them visible to other packages.
+        .library(
+            name: "MyLibrary",
+            targets: ["MyLibrary"]),
+    ],
+    dependencies: [
+        .package(url: "https://github.com/apple/example-package-figlet", branch: "main"),
+    ],
+    targets: [
+        // Targets are the basic building blocks of a package, defining a module or a test suite.
+        // Targets can depend on other targets in this package and products from dependencies.
+        .target(
+            name: "MyLibrary",
+            dependencies: [
+                .product(name: "Figlet", package: "example-package-figlet")
+            ]),
+        .testTarget(
+            name: "MyLibraryTests",
+            dependencies: ["MyLibrary"]),
+    ]
+)

swift/example-project/Sources/MyCLI.swift

@@ -0,0 +1,8 @@
+import Figlet
+
+@main
+struct FigletTool {
+  static func main() {
+    Figlet.say("Hello, Swift!")
+  }
+}

swift/example-project/Sources/MyLibrary/MyLibrary.swift

@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift open source project
+//
+// Copyright (c) 2023 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===--------------------------------------------------------------------
+
+import Foundation
+import Figlet
+
+struct Email: CustomStringConvertible {
+  var description: String
+
+  public init(_ emailString: String) throws {
+    let regex = #"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,64}"#
+    guard let _ = emailString.range(of: regex, options: .regularExpression) else {
+      throw InvalidEmailError(email: emailString)
+    }
+    self.description = emailString
+  }
+}
+
+private struct InvalidEmailError: Error {
+  let email: String
+}

swift/example-project/Tests/MyLibraryTests/MyLibraryTests.swift

@@ -0,0 +1,23 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the Swift open source project
+//
+// Copyright (c) 2023 Apple Inc. and the Swift project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See http://swift.org/LICENSE.txt for license information
+// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
+//
+//===--------------------------------------------------------------------
+
+@testable import MyLibrary
+import XCTest
+
+final class MyLibraryTests: XCTestCase {
+  func testEmail() throws {
+    let email = try Email("[email protected]")
+    XCTAssertEqual(email.description, "[email protected]")
+
+    XCTAssertThrowsError(try Email("invalid"))
+  }
+}

swift/pipeline.yaml

@@ -0,0 +1,30 @@
+env:
+  SWIFT_CACHE_PATH: .cache
+
+steps:
+  - label: ":swift: Build"
+    key: "build"
+    command: "swift build --cache-path $SWIFT_CACHE_PATH"
+    plugins:
+      - docker#v5.9.0:
+          image: "swift:latest"
+      - artifacts#v1.9.3:
+          upload: "$SWIFT_CACHE_PATH"
+          compressed: cache.tgz
+
+  - label: ":swift: Lint"
+    command: "swiftlint"
+    plugins:
+      - docker#v5.9.0:
+          image: "ghcr.io/realm/swiftlint:latest"
+          platform: "linux/amd64"
+
+  - label: ":swift: Test"
+    command: "swift test --cache-path $SWIFT_CACHE_PATH"
+    depends_on: ["build"]
+    plugins:
+      - docker#v5.9.0:
+          image: "swift:latest"
+      - artifacts#v1.9.3:
+          download: "$SWIFT_CACHE_PATH"
+          compressed: cache.tgz