test: Adds self-tests & example package

Author: NeedleInAJayStack

.github/workflows/self-test.yaml

@@ -0,0 +1,19 @@
+name: Self-test the CI workflows
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  lint:
+    uses: ./.github/workflows/lint.yaml
+    with:
+      package_path: WorkflowTestPackage
+  test:
+    uses: ./.github/workflows/test.yaml
+    with:
+      package_path: WorkflowTestPackage

WorkflowTestPackage/.gitignore

@@ -0,0 +1,8 @@
+.DS_Store
+/.build
+/Packages
+xcuserdata/
+DerivedData/
+.swiftpm/configuration/registries.json
+.swiftpm/xcode/package.xcworkspace/contents.xcworkspacedata
+.netrc

WorkflowTestPackage/Package.swift

@@ -0,0 +1,24 @@
+// swift-tools-version:5.8
+
+import PackageDescription
+
+let package = Package(
+    name: "WorkflowTestPackage",
+    products: [
+        .library(
+            name: "WorkflowTestPackage",
+            targets: ["WorkflowTestPackage"]
+        ),
+    ],
+    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: "WorkflowTestPackage"
+        ),
+        .testTarget(
+            name: "WorkflowTestPackageTests",
+            dependencies: ["WorkflowTestPackage"]
+        ),
+    ]
+)

WorkflowTestPackage/Sources/WorkflowTestPackage/WorkflowTestPackage.swift

@@ -0,0 +1,9 @@
+public struct WorkflowTest {
+    public let foo = "bar"
+
+    public init() {}
+
+    public func hello() -> String {
+        return "world"
+    }
+}

WorkflowTestPackage/Tests/WorkflowTestPackageTests/WorkflowTestPackageTests.swift

@@ -0,0 +1,9 @@
+@testable import WorkflowTestPackage
+
+import XCTest
+
+class WorkflowTestPackageTests: XCTestCase {
+    func testHello() async throws {
+        XCTAssertEqual(WorkflowTest().hello(), "world")
+    }
+}