Adds CI coverage for the existing Detox iOS E2E suites in RNApp, ExpoApp54, and ExpoApp55.

.github/actions/e2e-ios/action.yml

@@ -0,0 +1,93 @@
+name: iOS E2E (Detox)
+description: Build and run Detox iOS end-to-end tests for a brownfield example app
+
+inputs:
+  app-path:
+    description: 'Path to the app workspace (e.g. apps/RNApp)'
+    required: true
+
+  run-expo-prebuild:
+    description: 'Run brownfield codegen and Expo iOS prebuild before pod install'
+    required: false
+    default: 'false'
+
+  run-brownfield-codegen:
+    description: 'Run brownfield codegen before building (required for RNApp)'
+    required: false
+    default: 'false'
+
+  artifact-name:
+    description: 'Name prefix for Detox artifacts uploaded on failure'
+    required: false
+    default: 'detox'
+
+runs:
+  using: composite
+  steps:
+    - name: Checkout
+      uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
+
+    - name: Setup
+      uses: ./.github/actions/setup
+
+    - name: Prepare iOS environment
+      uses: ./.github/actions/prepare-ios
+
+    - name: Install applesimutils
+      run: |
+        brew tap wix/brew
+        brew install applesimutils
+      shell: bash
+
+    - name: Brownfield codegen
+      if: inputs.run-brownfield-codegen == 'true'
+      run: yarn codegen
+      working-directory: ${{ inputs.app-path }}
+      shell: bash
+
+    - name: Expo iOS prebuild
+      if: inputs.run-expo-prebuild == 'true'
+      run: |
+        node ../../packages/cli/dist/main.js codegen
+        yarn expo prebuild --platform ios --no-install
+      working-directory: ${{ inputs.app-path }}
+      shell: bash
+
+    - name: Restore Pods cache
+      uses: actions/cache@9255dc7a253b0ccc959486e2bca901246202afeb # v5
+      with:
+        path: ${{ inputs.app-path }}/ios/Pods
+        key: ${{ runner.os }}-e2e-ios-pods-${{ inputs.app-path }}-${{ hashFiles(format('{0}/ios/Podfile.lock', inputs.app-path)) }}
+        restore-keys: |
+          ${{ runner.os }}-e2e-ios-pods-${{ inputs.app-path }}-
+
+    - name: Install CocoaPods
+      run: pod install
+      working-directory: ${{ inputs.app-path }}/ios
+      shell: bash
+
+    - name: Restore Detox build cache
+      uses: actions/cache@9255dc7a253b0ccc959486e2bca901246202afeb # v5
+      with:
+        path: ${{ inputs.app-path }}/ios/build
+        key: ${{ runner.os }}-e2e-ios-build-${{ inputs.app-path }}-${{ hashFiles(format('{0}/ios/Podfile.lock', inputs.app-path), format('{0}/ios/*.xcodeproj/project.pbxproj', inputs.app-path)) }}
+        restore-keys: |
+          ${{ runner.os }}-e2e-ios-build-${{ inputs.app-path }}-
+
+    - name: Detox build (iOS Simulator)
+      run: yarn e2e:build:ios
+      working-directory: ${{ inputs.app-path }}
+      shell: bash
+
+    - name: Detox test (iOS Simulator)
+      run: yarn e2e:test:ios
+      working-directory: ${{ inputs.app-path }}
+      shell: bash
+
+    - name: Upload Detox artifacts on failure
+      if: failure()
+      uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
+      with:
+        name: ${{ inputs.artifact-name }}-ios
+        path: ${{ inputs.app-path }}/artifacts
+        if-no-files-found: ignore

.github/workflows/ci.yml

@@ -35,10 +35,13 @@
               - 'packages/**'
             rnapp:
               - 'apps/RNApp/**'
+              - 'apps/brownfield-example-shared-tests/**'
             expo54:
               - 'apps/ExpoApp54/**'
+              - 'apps/brownfield-example-shared-tests/**'
             expo55:
               - 'apps/ExpoApp55/**'
+              - 'apps/brownfield-example-shared-tests/**'
             androidapp:
               - 'apps/AndroidApp/**'
             appleapp:
@@ -201,3 +204,52 @@
         with:
           variant: expo${{ matrix.version }}
           rn-project-path: apps/ExpoApp${{ matrix.version }}
+
+  e2e-ios-rnapp:
+    name: E2E iOS (RNApp)
+    runs-on: macos-26
+    timeout-minutes: 90
+    needs: [filter, build-lint]
+    if: |
+      always() &&
+      (
+        needs.filter.outputs.rnapp == 'true' ||
+        needs.filter.outputs.packages == 'true' ||
+        needs.filter.outputs.ci == 'true'
+      ) &&
+      (needs.build-lint.result == 'success' || needs.build-lint.result == 'skipped')
+    steps:
+      - name: Run Detox E2E (RNApp)
+        uses: ./.github/actions/e2e-ios
+        with:
+          app-path: apps/RNApp
+          artifact-name: detox-rnapp
+          run-brownfield-codegen: 'true'
+
+  e2e-ios-expo:
+    name: E2E iOS (Expo ${{ matrix.version }})
+    runs-on: macos-26
+    timeout-minutes: 90
+    needs: [filter, build-lint]
+    if: |
+      always() &&
+      (
+        needs.filter.outputs.expo54 == 'true' ||
+        needs.filter.outputs.expo55 == 'true' ||
+        needs.filter.outputs.packages == 'true' ||
+        needs.filter.outputs.ci == 'true'
+      ) &&
+      (needs.build-lint.result == 'success' || needs.build-lint.result == 'skipped')
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - version: '54'
+          - version: '55'
+    steps:
+      - name: Run Detox E2E (Expo ${{ matrix.version }})
+        uses: ./.github/actions/e2e-ios
+        with:
+          app-path: apps/ExpoApp${{ matrix.version }}
+          artifact-name: detox-expo${{ matrix.version }}
+          run-expo-prebuild: 'true'

apps/ExpoApp54/.detoxrc.cjs

@@ -0,0 +1,43 @@
+const {
+  getIosSimulatorDeviceType,
+} = require('../brownfield-example-shared-tests/detox-ios-simulator-device.cjs');
+
+/**
+ * Requires a native tree from `expo prebuild` / `expo run:ios` (ios/ + Pods).
+ * @type {Detox.DetoxConfig}
+ */
+module.exports = {
+  testRunner: {
+    $0: 'jest',
+    args: {
+      config: 'e2e/jest.config.cjs',
+      _: ['e2e'],
+    },
+    jest: {
+      setupTimeout: 300000,
+    },
+  },
+  apps: {
+    'ios.debug': {
+      type: 'ios.app',
+      binaryPath:
+        'ios/build/Build/Products/Debug-iphonesimulator/ExpoApp54.app',
+      build:
+        'xcodebuild -workspace ios/ExpoApp54.xcworkspace -scheme ExpoApp54 -configuration Debug -sdk iphonesimulator -derivedDataPath ios/build',
+    },
+  },
+  devices: {
+    'ios.sim': {
+      type: 'ios.simulator',
+      device: {
+        type: getIosSimulatorDeviceType(),
+      },
+    },
+  },
+  configurations: {
+    'ios.sim.debug': {
+      device: 'ios.sim',
+      app: 'ios.debug',
+    },
+  },
+};

apps/ExpoApp54/.gitignore

@@ -38,6 +38,9 @@ yarn-error.*
 
 app-example
 
+# Detox
+artifacts/
+
 # generated native folders
 /ios
 /android

apps/ExpoApp54/RNApp.tsx

@@ -2,6 +2,7 @@ import { SafeAreaView } from 'react-native-safe-area-context';
 import { Button, StyleSheet, Text, View } from 'react-native';
 import BrownfieldNavigation from '@callstack/brownfield-navigation';
 
+import PostMessageTab from './app/(tabs)/postMessage';
 import Counter from './components/counter';
 
 import { checkAndFetchUpdate } from './utils/expo-rn-updates';
@@ -13,29 +14,35 @@ type RNAppProps = {
 export default function RNApp({ nativeOsVersionLabel }: RNAppProps) {
   return (
     <SafeAreaView style={styles.container}>
-      <Text style={styles.title}>Expo React Native Brownfield</Text>
+      <View style={styles.header}>
+        <Text style={styles.title}>Expo React Native Brownfield</Text>
 
-      {nativeOsVersionLabel ? (
-        <Text
-          style={styles.nativeOsVersionLabel}
-          accessibilityLabel="Native OS version"
-        >
-          {nativeOsVersionLabel}
-        </Text>
-      ) : null}
+        {nativeOsVersionLabel ? (
+          <Text
+            style={styles.nativeOsVersionLabel}
+            accessibilityLabel="Native OS version"
+          >
+            {nativeOsVersionLabel}
+          </Text>
+        ) : null}
 
-      <View style={styles.content}>
-        <Counter />
+        <View style={styles.content}>
+          <Counter />
 
-        <Button
-          title="Navigate to Settings"
-          onPress={() => BrownfieldNavigation.navigateToSettings()}
-        />
-        <Button
-          title="Navigate to Referrals"
-          onPress={() => BrownfieldNavigation.navigateToReferrals('123')}
-        />
-        <Button title="Fetch Update" onPress={checkAndFetchUpdate} />
+          <Button
+            title="Navigate to Settings"
+            onPress={() => BrownfieldNavigation.navigateToSettings()}
+          />
+          <Button
+            title="Navigate to Referrals"
+            onPress={() => BrownfieldNavigation.navigateToReferrals('123')}
+          />
+          <Button title="Fetch Update" onPress={checkAndFetchUpdate} />
+        </View>
+      </View>
+
+      <View style={styles.postMessageSection}>
+        <PostMessageTab />
       </View>
     </SafeAreaView>
   );
@@ -45,7 +52,9 @@ const styles = StyleSheet.create({
   container: {
     flex: 1,
     backgroundColor: '#eeeeee',
-    paddingTop: 20,
+  },
+  header: {
+    flexShrink: 0,
   },
   title: {
     fontSize: 20,
@@ -59,10 +68,15 @@ const styles = StyleSheet.create({
     marginTop: 4,
   },
   content: {
-    flex: 1,
+    minHeight: 220,
     justifyContent: 'center',
     alignItems: 'center',
   },
+  postMessageSection: {
+    flex: 1,
+    minHeight: 200,
+    marginTop: 8,
+  },
   text: {
     fontSize: 18,
     textAlign: 'center',

apps/ExpoApp54/app/(tabs)/postMessage.tsx

@@ -1,6 +1,7 @@
 import { StyleSheet, FlatList, TouchableOpacity } from 'react-native';
 
 import { useCallback, useEffect, useRef, useState } from 'react';
+import { brownfieldE2eTestIds } from '@callstack/brownfield-example-shared-tests/e2eTestIds';
 import ReactNativeBrownfield from '@callstack/react-native-brownfield';
 import type { MessageEvent } from '@callstack/react-native-brownfield';
 
@@ -51,6 +52,7 @@ export default function PostMessageTab() {
   return (
     <ThemedView style={styles.messageSection}>
       <TouchableOpacity
+        testID={brownfieldE2eTestIds.sendMessageToNative}
         style={styles.sendButton}
         onPress={sendMessage}
         activeOpacity={0.8}

apps/ExpoApp54/components/postMessage/MessageBubble.tsx

@@ -1,6 +1,7 @@
 import { Animated, StyleSheet } from 'react-native';
 import { Message } from './Message';
 import { useEffect, useRef } from 'react';
+import { brownfieldE2eTestIds } from '@callstack/brownfield-example-shared-tests/e2eTestIds';
 import { ThemedText } from '@/components/themed-text';
 
 export function MessageBubble({ item }: { item: Message }) {
@@ -40,7 +41,14 @@ export function MessageBubble({ item }: { item: Message }) {
       <ThemedText style={styles.bubbleLabel}>
         {isFromNative ? 'From Native' : 'From RN'}
       </ThemedText>
-      <ThemedText style={styles.bubbleText}>{item.text}</ThemedText>
+      <ThemedText
+        style={styles.bubbleText}
+        testID={
+          isFromNative ? undefined : brownfieldE2eTestIds.rnPostMessageText
+        }
+      >
+        {item.text}
+      </ThemedText>
     </Animated.View>
   );
 }

apps/ExpoApp54/e2e/jest.config.cjs

@@ -0,0 +1,23 @@
+const path = require('node:path');
+
+const appRoot = path.join(__dirname, '..');
+const sharedTestsRoot = path.join(
+  __dirname,
+  '../../brownfield-example-shared-tests'
+);
+
+module.exports = {
+  maxWorkers: 1,
+  rootDir: appRoot,
+  roots: [appRoot, sharedTestsRoot],
+  modulePaths: [path.join(appRoot, 'node_modules')],
+  testTimeout: 120000,
+  verbose: true,
+  reporters: ['detox/runners/jest/reporter'],
+  globalSetup: 'detox/runners/jest/globalSetup',
+  globalTeardown: 'detox/runners/jest/globalTeardown',
+  testEnvironment: 'detox/runners/jest/testEnvironment',
+  testMatch: [
+    path.join(sharedTestsRoot, 'e2e/expoPostMessageBrownfield.e2e.js'),
+  ],
+};

apps/ExpoApp54/entry.tsx

@@ -1,12 +1,18 @@
-import { ExpoRoot } from 'expo-router';
+import type { ComponentProps } from 'react';
 import { AppRegistry } from 'react-native';
+import { SafeAreaProvider } from 'react-native-safe-area-context';
+
 import RNApp from './RNApp';
 
-function App() {
-  const ctx = require.context('./app');
-  return <ExpoRoot context={ctx} />;
+type RNAppRootProps = ComponentProps<typeof RNApp>;
+
+function RNAppRoot(props: RNAppRootProps) {
+  return (
+    <SafeAreaProvider>
+      <RNApp {...props} />
+    </SafeAreaProvider>
+  );
 }
 
-AppRegistry.registerComponent('RNApp', () => RNApp);
-// Keep compatibility with Expo's default app key.
-AppRegistry.registerComponent('main', () => App);
+AppRegistry.registerComponent('RNApp', () => RNAppRoot);
+AppRegistry.registerComponent('main', () => RNAppRoot);