[NT-3070] iOS UI tests in CI

.github/workflows/main-pipeline.yaml

@@ -26,6 +26,7 @@ jobs:
       e2e_web_sdk_react: ${{ steps.filter.outputs.e2e_web_sdk_react }}
       e2e_react_web_sdk: ${{ steps.filter.outputs.e2e_react_web_sdk }}
       e2e_react_native_android: ${{ steps.filter.outputs.e2e_react_native_android }}
+      e2e_ios: ${{ steps.filter.outputs.e2e_ios }}
     steps:
       - uses: namespacelabs/nscloud-checkout-action@938f5d2d403d6224d9a0c0dc559b1dae09c2ede4 # v8.1.1
 
@@ -125,6 +126,14 @@ jobs:
               - 'package.json'
               - 'pnpm-lock.yaml'
               - '.github/workflows/main-pipeline.yaml'
+            # iOS native implementation E2E coverage scope.
+            e2e_ios:
+              - 'implementations/ios-sdk/**'
+              - 'lib/mocks/**'
+              - 'packages/ios/**'
+              - 'package.json'
+              - 'pnpm-lock.yaml'
+              - '.github/workflows/main-pipeline.yaml'
 
   setup:
     name: 🛠️ pnpm install
@@ -650,6 +659,57 @@ jobs:
           if-no-files-found: error
           retention-days: 1
 
+  e2e-ios-sdk-build:
+    name: 🍎 Build iOS UI Test Bundles
+    runs-on: namespace-profile-macos-apple-silicon-arm64-6-cpu-14-gb
+    timeout-minutes: 30
+    needs: [setup, changes]
+    if: needs.changes.outputs.e2e_ios == 'true'
+    env:
+      DERIVED_DATA: /tmp/optimization-ios-derived-data
+    steps:
+      - uses: namespacelabs/nscloud-checkout-action@938f5d2d403d6224d9a0c0dc559b1dae09c2ede4 # v8.1.1
+
+      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+        with:
+          node-version-file: '.nvmrc'
+          package-manager-cache: false
+
+      - uses: pnpm/action-setup@903f9c1a6ebcba6cf41d87230be49611ac97822e # v6.0.3
+
+      - name: Install XcodeGen and xcbeautify
+        run: brew install xcodegen xcbeautify
+
+      - name: Set up caches (Namespace)
+        uses: namespacelabs/nscloud-cache-action@15799a6b54e5765f85b2aac25b3f0df43ed571c0 # v1.4.3
+        with:
+          cache: pnpm
+          path: |
+            ~/Library/Caches/org.swift.swiftpm
+
+      - name: Show toolchain
+        run: |
+          xcodebuild -version
+          xcrun simctl list runtimes | head
+
+      - run: pnpm install --prefer-offline --frozen-lockfile
+
+      - name: Build iOS UI test bundles (SwiftUI + UIKit)
+        run: pnpm run implementation:ios-sdk -- test:e2e:ios:build:release
+
+      - name: Stage Build/Products for artifact
+        run: |
+          mkdir -p /tmp/ios-artifact
+          cp -R "$DERIVED_DATA/Build/Products" /tmp/ios-artifact/Products
+          ls /tmp/ios-artifact/Products/*.xctestrun
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        with:
+          name: ios-uitest-bundles
+          path: /tmp/ios-artifact/
+          if-no-files-found: error
+          retention-days: 1
+
   e2e-react-native-android:
     name: 📱 E2E React Native Android (shard ${{ matrix.shard }}/2)
     runs-on: namespace-profile-linux-16-vcpu-32-gb-ram-optimal
@@ -808,3 +868,107 @@ jobs:
             implementations/react-native-sdk/.detox/
             /tmp/mock-server.log
           retention-days: 7
+
+  e2e-ios-sdk:
+    name: 🍎 E2E iOS UI (${{ matrix.scheme }})
+    runs-on: namespace-profile-macos-apple-silicon-arm64-6-cpu-14-gb
+    timeout-minutes: 45
+    needs: [setup, changes, e2e-ios-sdk-build]
+    if: needs.changes.outputs.e2e_ios == 'true'
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - scheme: SwiftUI
+          - scheme: UIKit
+    env:
+      DERIVED_DATA: /tmp/optimization-ios-derived-data
+      IOS_SCHEME: ${{ matrix.scheme }}
+      IOS_SIM_NAME: 'iPhone 16'
+      IOS_SIM_OS: 'latest'
+      # Smoke mode for the first PR — restrict to one test class per scheme.
+      # Remove this env var in a follow-up PR to enable the full suite.
+      IOS_ONLY_TESTING: OptimizationAppUITests${{ matrix.scheme }}/PreviewPanelTests
+    steps:
+      - uses: namespacelabs/nscloud-checkout-action@938f5d2d403d6224d9a0c0dc559b1dae09c2ede4 # v8.1.1
+
+      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+        with:
+          node-version-file: '.nvmrc'
+          package-manager-cache: false
+
+      - uses: pnpm/action-setup@903f9c1a6ebcba6cf41d87230be49611ac97822e # v6.0.3
+
+      - name: Install xcbeautify
+        run: brew install xcbeautify
+
+      - uses: namespacelabs/nscloud-cache-action@15799a6b54e5765f85b2aac25b3f0df43ed571c0 # v1.4.3
+        with:
+          cache: pnpm
+
+      - run: pnpm install --prefer-offline --frozen-lockfile
+
+      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        with:
+          name: ios-uitest-bundles
+          path: /tmp/ios-artifact/
+
+      - name: Reconstruct DerivedData layout at stable path
+        run: |
+          mkdir -p "$DERIVED_DATA/Build"
+          mv /tmp/ios-artifact/Products "$DERIVED_DATA/Build/Products"
+          ls "$DERIVED_DATA/Build/Products"
+
+      - name: Boot iOS Simulator
+        run: |
+          DEVICE_UDID=$(xcrun simctl create "ci-${{ matrix.scheme }}" "$IOS_SIM_NAME")
+          echo "DEVICE_UDID=$DEVICE_UDID" >> "$GITHUB_ENV"
+          xcrun simctl boot "$DEVICE_UDID"
+          xcrun simctl bootstatus "$DEVICE_UDID" -b
+
+      - name: Start Mock Server
+        run: |
+          pnpm --dir lib/mocks serve > /tmp/mock-server.log 2>&1 &
+          echo $! > /tmp/mock-server.pid
+          for i in {1..60}; do
+            if nc -z localhost 8000 2>/dev/null; then
+              echo "Mock server is ready"
+              break
+            fi
+            echo "Waiting for mock server... ($i/60)"
+            sleep 1
+          done
+          if ! nc -z localhost 8000 2>/dev/null; then
+            echo "Mock server failed to start:"
+            cat /tmp/mock-server.log
+            exit 1
+          fi
+
+      - name: Verify built xctestrun exists for ${{ matrix.scheme }}
+        shell: 'bash -eo pipefail {0}'
+        run: |
+          shopt -s nullglob
+          matches=("$DERIVED_DATA"/Build/Products/OptimizationApp"$IOS_SCHEME"_*.xctestrun)
+          if [ ${#matches[@]} -eq 0 ]; then
+            echo "No xctestrun found for scheme $IOS_SCHEME under $DERIVED_DATA/Build/Products/" >&2
+            ls -la "$DERIVED_DATA/Build/Products/" || true
+            exit 1
+          fi
+          printf 'Found xctestrun: %s\n' "${matches[@]}"
+
+      - name: Run iOS UI tests (${{ matrix.scheme }})
+        shell: 'bash -eo pipefail {0}'
+        run: pnpm run implementation:ios-sdk -- test:e2e:ios:run:release
+
+      - name: Stop Mock Server
+        if: always()
+        run: kill $(cat /tmp/mock-server.pid) 2>/dev/null || true
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        if: ${{ !cancelled() }}
+        with:
+          name: ci-results-ios-${{ matrix.scheme }}
+          path: |
+            /tmp/optimization-ios-derived-data/Test-*.xcresult
+            /tmp/mock-server.log
+          retention-days: 7

implementations/ios-sdk/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "@implementation/ios-sdk",
+  "version": "0.0.0",
+  "private": true,
+  "scripts": {
+    "xcodegen": "xcodegen generate",
+    "test:e2e:ios:build:release": "set -o pipefail && pnpm run xcodegen && xcodebuild build-for-testing -project OptimizationApp.xcodeproj -scheme OptimizationAppSwiftUI -configuration Release -destination 'generic/platform=iOS Simulator' -derivedDataPath /tmp/optimization-ios-derived-data CODE_SIGNING_ALLOWED=NO COMPILER_INDEX_STORE_ENABLE=NO | xcbeautify && xcodebuild build-for-testing -project OptimizationApp.xcodeproj -scheme OptimizationAppUIKit -configuration Release -destination 'generic/platform=iOS Simulator' -derivedDataPath /tmp/optimization-ios-derived-data CODE_SIGNING_ALLOWED=NO COMPILER_INDEX_STORE_ENABLE=NO | xcbeautify",
+    "test:e2e:ios:run:release": "set -o pipefail && xcodebuild test-without-building -xctestrun \"$(ls /tmp/optimization-ios-derived-data/Build/Products/OptimizationApp${IOS_SCHEME}_*.xctestrun | head -1)\" -destination \"platform=iOS Simulator,name=${IOS_SIM_NAME:-iPhone 16},OS=${IOS_SIM_OS:-latest}\" -resultBundlePath /tmp/optimization-ios-derived-data/Test-${IOS_SCHEME}.xcresult ${IOS_ONLY_TESTING:+-only-testing:${IOS_ONLY_TESTING}} | xcbeautify"
+  }
+}

package.json

@@ -14,6 +14,7 @@
     "format:check": "prettier . --check",
     "format:fix": "prettier . --check --write",
     "implementation:install": "pnpm run build:pkgs && pnpm run implementation:run -- --all -- implementation:install",
+    "implementation:ios-sdk": "pnpm run implementation:run -- ios-sdk",
     "implementation:node-sdk": "pnpm run implementation:run -- node-sdk",
     "implementation:node-sdk+web-sdk": "pnpm run implementation:run -- node-sdk+web-sdk",
     "implementation:react-native-sdk": "pnpm run implementation:run -- react-native-sdk",
@@ -38,13 +39,15 @@
     "prepare": "husky",
     "serve:mocks": "pnpm --dir lib/mocks serve",
     "setup:e2e": "pnpm run build:pkgs && pnpm run implementation:run -- --all -- implementation:install && pnpm run playwright:install && pnpm run playwright:install-deps",
+    "setup:e2e:ios-sdk": "pnpm run implementation:ios-sdk -- xcodegen",
     "setup:e2e:node-sdk": "pnpm run build:pkgs && pnpm run implementation:run -- node-sdk implementation:install && pnpm run implementation:run -- node-sdk implementation:setup:e2e",
     "setup:e2e:node-sdk+web-sdk": "pnpm run build:pkgs && pnpm run implementation:run -- node-sdk+web-sdk implementation:install && pnpm run implementation:run -- node-sdk+web-sdk implementation:setup:e2e",
     "setup:e2e:react-native-sdk": "pnpm run build:pkgs && pnpm run implementation:run -- react-native-sdk implementation:install && pnpm run implementation:run -- react-native-sdk implementation:setup:e2e",
     "setup:e2e:react-web-sdk": "pnpm run build:pkgs && pnpm run implementation:run -- react-web-sdk implementation:install && pnpm run implementation:run -- react-web-sdk implementation:setup:e2e",
     "setup:e2e:web-sdk_react": "pnpm run build:pkgs && pnpm run implementation:run -- web-sdk_react implementation:install && pnpm run implementation:run -- web-sdk_react implementation:setup:e2e",
     "setup:e2e:web-sdk": "pnpm run build:pkgs && pnpm run implementation:run -- web-sdk implementation:install && pnpm run implementation:run -- web-sdk implementation:setup:e2e",
     "test:e2e": "pnpm run setup:e2e && pnpm run implementation:run -- --all -- implementation:test:e2e:run",
+    "test:e2e:ios-sdk": "pnpm run setup:e2e:ios-sdk && pnpm run implementation:ios-sdk -- test:e2e:ios:build:release && IOS_SCHEME=SwiftUI pnpm run implementation:ios-sdk -- test:e2e:ios:run:release && IOS_SCHEME=UIKit pnpm run implementation:ios-sdk -- test:e2e:ios:run:release",
     "test:e2e:node-sdk": "pnpm run setup:e2e:node-sdk && pnpm run implementation:run -- node-sdk implementation:test:e2e:run",
     "test:e2e:node-sdk+web-sdk": "pnpm run setup:e2e:node-sdk+web-sdk && pnpm run implementation:run -- node-sdk+web-sdk implementation:test:e2e:run",
     "test:e2e:react-native-sdk": "pnpm run setup:e2e:react-native-sdk && pnpm run implementation:run -- react-native-sdk implementation:test:e2e:run",

packages/ios/ContentfulOptimization/Sources/ContentfulOptimization/Polyfills/NativePolyfills.swift

@@ -76,7 +76,7 @@ enum NativePolyfills {
     }
 
     private static func registerNativeSetTimeout(in context: JSContext, timerStore: TimerStore) {
-        weak let weakContext = context
+        weak var weakContext = context
         let nativeSetTimeout: @convention(block) (Int, Int) -> Void = { timerId, delayMs in
             let workItem = DispatchWorkItem {
                 guard let ctx = weakContext else { return }
@@ -107,7 +107,7 @@ enum NativePolyfills {
     }
 
     private static func registerNativeFetch(in context: JSContext) {
-        weak let weakContext = context
+        weak var weakContext = context
         let nativeFetch: @convention(block) (String, String, String, JSValue, Int) -> Void = {
             urlString, method, headersJSON, bodyValue, callbackId in