feat: Harness tests

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

@@ -0,0 +1,56 @@
+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 --cwd .. run test:harness:android
+

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

@@ -0,0 +1,66 @@
+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
+
+    steps:
+      - uses: actions/checkout@v6
+      - uses: oven-sh/setup-bun@v2
+
+      - 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: |
+          xcrun simctl boot "iPhone 17 Pro (26.2)" || true
+          xcrun simctl bootstatus booted -b
+
+      - name: Build and install debug app
+        working-directory: example/ios
+        run: |
+          set -o pipefail
+          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,name=iPhone 17 Pro,OS=26.2' \
+            ONLY_ACTIVE_ARCH=YES \
+            install \
+            CODE_SIGNING_ALLOWED=NO
+
+      - name: Run react-native-harness on iOS
+        run: bun --cwd example run test:harness:ios
+

example/__tests__/typeorm.harness.ts

@@ -0,0 +1,3 @@
+import { registerTypeORMUnitTests } from '../src/tests/unit'
+
+registerTypeORMUnitTests()

example/__tests__/unit.harness.ts

@@ -0,0 +1,3 @@
+import { registerUnitTests } from '../src/tests/unit'
+
+registerUnitTests()

example/jest.config.js

@@ -0,0 +1,12 @@
+module.exports = {
+  projects: [
+    {
+      displayName: "react-native-harness",
+      preset: "react-native-harness",
+      testMatch: [
+        "**/__tests__/**/*.(test|spec|harness).(js|jsx|ts|tsx)",
+      ],
+    },
+  ],
+};
+

example/package.json

@@ -10,7 +10,10 @@
     "pods": "cd ios && bundle exec pod install",
     "typecheck": "tsc --noEmit",
     "lint": "eslint \"**/*.{js,ts,tsx}\" --fix",
-    "codegen": "bun react-native codegen"
+    "codegen": "bun react-native codegen",
+    "test:harness": "react-native-harness",
+    "test:harness:android": "react-native-harness --harnessRunner android",
+    "test:harness:ios": "react-native-harness --harnessRunner ios"
   },
   "dependencies": {
     "@craftzdog/react-native-buffer": "^6.0.5",
@@ -49,6 +52,11 @@
     "@types/node": "^22.7.4",
     "@types/react": "^19.1.1",
     "@types/react-test-renderer": "^19.1.0",
+    "@react-native-harness/cli": "1.0.0-alpha.21",
+    "@react-native-harness/jest": "1.0.0-alpha.21",
+    "@react-native-harness/platform-android": "1.0.0-alpha.21",
+    "@react-native-harness/platform-apple": "1.0.0-alpha.21",
+    "react-native-harness": "1.0.0-alpha.21",
     "mocha": "^10.1.0",
     "postinstall-postinstall": "^2.1.0",
     "react-test-renderer": "19.1.1"

example/rn-harness.config.mjs

@@ -0,0 +1,35 @@
+import {
+  androidPlatform,
+  androidEmulator,
+} from "@react-native-harness/platform-android";
+import {
+  applePlatform,
+  appleSimulator,
+} from "@react-native-harness/platform-apple";
+
+const config = {
+  entryPoint: "./index.js",
+  appRegistryComponentName: "NitroSQLiteExample",
+
+  runners: [
+    androidPlatform({
+      name: "android",
+      device: androidEmulator("Pixel_8_API_35"),
+      bundleId: "com.margelo.rnnitrosqlite.example",
+    }),
+    applePlatform({
+      name: "ios",
+      device: appleSimulator("iPhone 17 Pro", "26.2"),
+      bundleId: "com.margelo.rnnitrosqlite.example",
+    }),
+  ],
+
+  defaultRunner: "android",
+  bridgeTimeout: 120000,
+
+  resetEnvironmentBetweenTestFiles: true,
+  unstable__skipAlreadyIncludedModules: false,
+};
+
+export default config;
+

example/src/tests/unit/common.ts

@@ -1,7 +1,7 @@
 import { Chance } from 'chance'
 import { NitroSQLiteError } from 'react-native-nitro-sqlite'
 import { resetTestDb } from '../db'
-import chai from 'chai'
+import { expect as harnessExpect } from 'react-native-harness'
 
 export const TEST_ERROR_CODES = {
   EXPECT_NITRO_SQLITE_ERROR: 'Should have thrown a valid NitroSQLiteError',
@@ -15,7 +15,7 @@ export function isNitroSQLiteError(e: unknown): e is NitroSQLiteError {
   return e instanceof NitroSQLiteError
 }
 
-export const expect = chai.expect
+export const expect = harnessExpect
 export const chance = new Chance()
 
 export function setupTestDb() {

example/src/tests/unit/index.ts

@@ -1,4 +1,4 @@
-import { beforeEach, describe } from '../MochaRNAdapter'
+import { beforeEach, describe } from 'react-native-harness'
 import { setupTestDb } from './common'
 import registerExecuteUnitTests from './specs/operations/execute.spec'
 import registerTransactionUnitTests from './specs/operations/transaction.spec'