Add CI

.devcontainer/devcontainer-helper

@@ -0,0 +1,54 @@
+#!/bin/bash
+
+set -euo pipefail
+
+PROJECT_ROOT=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )/.." &> /dev/null && pwd )
+cd "$PROJECT_ROOT" || exit 1
+
+print_help() {
+  cat <<- EOF
+    Usage: devcontainer-helper --make-singular <devcontainer-name>
+                               --clean
+
+    The devcontainer/ci GitHub action does not support named devcontainers (i.e. ones located in subfolders of .devcontainer), so this script makes the selected devcontainer the singular devcontainer in the repo.
+EOF
+}
+
+case "$1" in
+  "--help")
+    print_help
+    ;;
+
+  "--make-singular")
+    DEVCONTAINER_NAME=$2
+    if [ -z "$DEVCONTAINER_NAME" ]; then
+      print_help
+      exit 1
+    fi
+
+    if [[ ! -d ".actual-devcontainer" ]]; then
+      mv .devcontainer .actual-devcontainer
+    else 
+      rm -rf .devcontainer
+    fi
+
+    cp -R ".actual-devcontainer/$DEVCONTAINER_NAME" .devcontainer/
+    cp -R ".actual-devcontainer/$DEVCONTAINER_NAME" .devcontainer/
+    cp .actual-devcontainer/devcontainer-helper .devcontainer/
+    ;;
+
+  "--clean")
+    if [[ ! -d ".actual-devcontainer" ]]; then
+      echo "No singular devcontainer to clean"
+      exit 1
+    fi
+
+    rm -rf .devcontainer
+    mv .actual-devcontainer .devcontainer
+    ;;
+
+  *)
+    print_help
+    exit 1
+    ;;  
+esac

.github/workflows/Build and Test (SwiftPM).yml

@@ -0,0 +1,101 @@
+# Build and Test
+
+name: Build and Test (SwiftPM)
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-and-test-macOS:
+    strategy:
+      matrix:
+        xcode-version:
+          - "16"
+        swift-configuration:
+          - "debug"
+          - "release"
+
+    runs-on: macos-15
+
+    name: Build and Test (macOS, ${{ matrix.swift-configuration }})
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Select Xcode
+        run: sudo xcode-select -s /Applications/Xcode_${{ matrix.xcode-version }}.app/Contents/Developer
+
+      - name: Build
+        run: |
+          swift build --configuration ${{ matrix.swift-configuration }}
+
+      - name: Build Tests
+        if: matrix.swift-configuration == 'debug'
+        run: |
+          swift build --build-tests --configuration ${{ matrix.swift-configuration }}
+
+      - name: Test
+        if: matrix.swift-configuration == 'debug'
+        run: |
+          swift test --skip-build
+
+      - name: Check that repository is clean
+        run:
+          git diff --exit-code
+
+  build-and-test-devcontainer:
+
+    strategy:
+      matrix:
+        devcontainer-name: ["default"]
+        swift-configuration: ["debug", "release"]
+
+    name: Build and Test (devcontainer/${{ matrix.devcontainer-name }}, ${{ matrix.swift-configuration }})
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Make devcontainer '${{ matrix.devcontainer-name }}' singular
+        run: .devcontainer/devcontainer-helper --make-singular ${{ matrix.devcontainer-name }}
+
+      - name: Initialize devcontainer
+        uses: devcontainers/[email protected]
+        with:
+          push: never
+          runCmd: |
+            echo "Devcontainer Initialized."
+
+      - name: Build
+        uses: devcontainers/[email protected]
+        with:
+          push: never
+          runCmd: |
+            swift build --configuration ${{ matrix.swift-configuration }}
+
+      - name: Build Tests
+        if: matrix.swift-configuration == 'debug'
+        uses: devcontainers/[email protected]
+        with:
+          push: never
+          runCmd: |
+            swift build --build-tests --configuration ${{ matrix.swift-configuration }}
+
+      - name: Test
+        uses: devcontainers/[email protected]
+        if: matrix.swift-configuration == 'debug'
+        with:
+          push: never
+          runCmd: |
+            swift test --skip-build
+
+      - name: Check that repository is clean
+        run:
+          .devcontainer/devcontainer-helper --clean
+          git diff --exit-code

.github/workflows/Build and Test (Xcode).yml

@@ -0,0 +1,67 @@
+# Build and Test
+
+name: Build and Test (Xcode)
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-and-test-xcode:
+    strategy:
+      matrix:
+        xcode-version:
+          - "16"
+        xcode-configuration:
+          - name: iOS Simulator
+            destination: "platform=iOS Simulator,name=iPhone 16"
+            sdk: "iphonesimulator"
+          - name: macOS
+            destination: "platform=macOS"
+            sdk: "macosx"
+        swift-configuration:
+          - "debug"
+          - "release"
+
+    runs-on: macos-15
+
+    name: Build and Test (${{ matrix.xcode-configuration.name }}, ${{ matrix.swift-configuration }})
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Select Xcode
+        run: sudo xcode-select -s /Applications/Xcode_${{ matrix.xcode-version }}.app/Contents/Developer
+
+      - name: Build
+        run: |
+          xcrun xcodebuild clean build \
+            -workspace Xcode/SwiftProjectTemplateApp.xcworkspace \
+            -scheme SwiftProjectTemplateApp \
+            -derivedDataPath ".build/Xcode.noindex/DerivedData" \
+            -configuration "${{ matrix.swift-configuration }}" \
+            -sdk "${{ matrix.xcode-configuration.sdk }}" \
+            -destination "${{ matrix.xcode-configuration.destination }}"
+
+      - name: Test
+        run: |
+          xcrun xcodebuild test \
+            -workspace Xcode/SwiftProjectTemplateApp.xcworkspace \
+            -scheme SwiftProjectTemplateAppUITests \
+            -derivedDataPath ".build/Xcode.noindex/DerivedData" \
+            -configuration "${{ matrix.swift-configuration }}" \
+            -sdk "${{ matrix.xcode-configuration.sdk }}" \
+            -destination "${{ matrix.xcode-configuration.destination }}"
+
+      - name: Upload Test Results
+        uses: actions/upload-artifact@v4
+        with:
+          name: Test Results (${{ matrix.xcode-configuration.name }}, ${{ matrix.swift-configuration }})
+          path: .build/Xcode.noindex/DerivedData/Logs/Test
+
+      - name: Check that repository is clean
+        run:
+          git diff --exit-code

.github/workflows/Validate Formatting.yml

@@ -0,0 +1,41 @@
+# Build and Test
+
+name: Validate Formatting
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  validate-formatting:
+    name: Validate Formatting
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Make devcontainer 'default' singular
+        run: .devcontainer/devcontainer-helper --make-singular default
+
+      - name: Initialize devcontainer
+        uses: devcontainers/[email protected]
+        with:
+          push: never
+          runCmd: |
+            echo "Devcontainer Initialized."
+
+      - name: Build
+        uses: devcontainers/[email protected]
+        with:
+          push: never
+          runCmd: |
+            swift format --recursive --in-place --parallel .
+
+      - name: Check that repository is clean
+        run:
+          .devcontainer/devcontainer-helper --clean
+          git diff --exit-code

.github/workflows/specialize-template.yml

@@ -35,10 +35,6 @@ jobs:
           # Run specialization script (requires variables defined above)
           ./specialize-template.sh "$NEW_PROJECT_BUNDLE_ID_PREFIX" "$NEW_PROJECT_NAME"
 
-          rm -rf \
-            .github/workflows/specialize-template.yml \
-            specialize-template.sh
-
       - name: Commit
         run: |
           git config --local user.email "github-actions[bot]@users.noreply.github.com"