feat: Harness tests

.github/workflows/test-harness-android.yml

@@ -0,0 +1,55 @@
+name: Test Harness Android
+
+on:
+  pull_request:
+    paths:
+      - ".github/workflows/test-harness-android.yml"
+      - "example/android/**"
+      - "example/src/tests/**"
+      - "example/__tests__/**"
+      - "example/rn-harness.config.mjs"
+      - "example/jest.config.js"
+      - "package/cpp/**"
+      - "package/android/**"
+      - "**/bun.lock"
+      - "**/react-native.config.js"
+      - "**/nitro.json"
+
+env:
+  TARGET_ANDROID_ARCH: x86_64
+
+jobs:
+  test:
+    name: Harness Tests (Android)
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v6
+      - uses: oven-sh/setup-bun@v2
+
+      - name: Setup JDK 17
+        uses: actions/setup-java@v5
+        with:
+          distribution: "zulu"
+          java-version: 17
+
+      - name: Enable KVM group perms
+        run: |
+          echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-kvm4all.rules
+          sudo udevadm control --reload-rules
+          sudo udevadm trigger --name-match=kvm
+
+      - name: Install dependencies (bun)
+        run: bun install
+
+      - name: Run react-native-harness on Android
+        uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: 35
+          arch: x86_64
+          avd-name: Pixel_8_API_35
+          working-directory: example/android
+          script: >-
+            ./gradlew :app:installDebug --no-daemon
+            -PreactNativeArchitectures=${{ env.TARGET_ANDROID_ARCH }}
+            && bun run --cwd .. test:harness:android

.github/workflows/test-harness-ios.yml

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+name: Test Harness iOS
+
+on:
+  pull_request:
+    paths:
+      - ".github/workflows/test-harness-ios.yml"
+      - "example/ios/**"
+      - "example/src/tests/**"
+      - "example/__tests__/**"
+      - "example/rn-harness.config.mjs"
+      - "example/jest.config.js"
+      - "package/cpp/**"
+      - "package/ios/**"
+      - "**/Podfile.lock"
+      - "**/*.podspec"
+      - "**/react-native.config.js"
+      - "**/nitro.json"
+      - "**/bun.lock"
+
+jobs:
+  test:
+    name: Harness Tests (iOS)
+    runs-on: macOS-26
+    env:
+      IOS_SIMULATOR_NAME: iPhone 17 Pro
+      IOS_SIMULATOR_OS: "26.2"
+
+    steps:
+      - uses: actions/checkout@v6
+      - uses: oven-sh/setup-bun@v2
+
+      - name: Install dependencies (bun)
+        run: bun install
+
+      - name: Setup Ruby (bundle)
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 3.3.0
+          bundler-cache: true
+          working-directory: example
+
+      - name: Select Xcode 26.2
+        run: sudo xcode-select -s "/Applications/Xcode_26.2.app/Contents/Developer"
+
+      - name: Install Pods
+        working-directory: example
+        run: bun pods
+
+      - name: Boot iOS Simulator
+        run: |
+          set -euo pipefail
+
+          IFS=$'\t' read -r SELECTED_SIMULATOR_UDID SELECTED_SIMULATOR_NAME SELECTED_SIMULATOR_OS <<EOF
+          $(xcrun simctl list devices available --json | ruby -rjson -e '
+            devices = JSON.parse(STDIN.read).fetch("devices")
+            preferred_name = ENV.fetch("IOS_SIMULATOR_NAME")
+            preferred_os = ENV.fetch("IOS_SIMULATOR_OS")
+
+            def os_version(runtime)
+              runtime.split(".").last.sub(/^iOS-/, "").tr("-", ".")
+            end
+
+            candidates = devices.flat_map do |runtime, runtime_devices|
+              next [] unless runtime.include?("SimRuntime.iOS")
+
+              runtime_devices
+                .select { |device| device["isAvailable"] }
+                .map { |device| [runtime, device] }
+            end
+
+            match = candidates.find do |runtime, device|
+              device["name"] == preferred_name && os_version(runtime) == preferred_os
+            end
+            match ||= candidates.find { |_runtime, device| device["name"] == preferred_name }
+            match ||= candidates.find { |_runtime, device| device["name"].start_with?("iPhone") }
+
+            abort("No available iOS simulator found") unless match
+
+            runtime, device = match
+            puts [device["udid"], device["name"], os_version(runtime)].join("\t")
+          ')
+          EOF
+
+          echo "Selected simulator: ${SELECTED_SIMULATOR_NAME} (${SELECTED_SIMULATOR_OS})"
+          echo "IOS_SIMULATOR_UDID=${SELECTED_SIMULATOR_UDID}" >> "$GITHUB_ENV"
+          echo "IOS_SIMULATOR_NAME=${SELECTED_SIMULATOR_NAME}" >> "$GITHUB_ENV"
+          echo "IOS_SIMULATOR_OS=${SELECTED_SIMULATOR_OS}" >> "$GITHUB_ENV"
+
+          xcrun simctl boot "${SELECTED_SIMULATOR_UDID}" || true
+          xcrun simctl bootstatus "${SELECTED_SIMULATOR_UDID}" -b
+
+      - name: Build and install debug app
+        working-directory: example/ios
+        run: |
+          set -euo pipefail
+
+          APP_PATH="build/Build/Products/Debug-iphonesimulator/NitroSQLiteExample.app"
+
+          xcodebuild \
+            CC=clang CPLUSPLUS=clang++ LD=clang LDPLUSPLUS=clang++ \
+            -derivedDataPath build -UseModernBuildSystem=YES \
+            -workspace NitroSQLiteExample.xcworkspace \
+            -scheme NitroSQLiteExample \
+            -sdk iphonesimulator \
+            -configuration Debug \
+            -destination "platform=iOS Simulator,id=${IOS_SIMULATOR_UDID}" \
+            ONLY_ACTIVE_ARCH=YES \
+            build \
+            CODE_SIGNING_ALLOWED=NO
+
+          xcrun simctl install "${IOS_SIMULATOR_UDID}" "${APP_PATH}"
+          xcrun simctl appinfo "${IOS_SIMULATOR_UDID}" "com.margelo.rnnitrosqlite.example" > /dev/null
+
+      - name: Run react-native-harness on iOS
+        run: bun run --cwd example test:harness:ios