nossbiggandFacebook Github Bot
adc0878703
Summary: Fixes the e2e detox build step by manually overriding `PROJECT_ROOT` for the project's JS bundle build step. After seeing [quite](https://github.com/facebook/react-native/issues/18472#issuecomment-428996279) [a](https://github.com/facebook/react-native/issues/18472#issuecomment-450485004) [few](https://github.com/facebook/react-native/issues/15432#issuecomment-417310668) [comments](https://stackoverflow.com/a/49506072) suggesting running some variant of the `react-native bundle` manually on your own so as to build the jsbundle required as part of the build step for RNTester project... The main issue I found was that the working directory in which `react-native-xcode.sh` executed the CLI bundle step was not correct. The `PROJECT_ROOT` was not resolving to the root of the `react-native` project directory, but instead to something to the effect of `/Users/gibson.cheng/IdeaProjects/react-native/../..` - of which of course the build step would not be able to find the `react-native` project to run the build against. I'm not sure if new generated `react-native` projects require this manual override, so I only applied it to the RNTester project. Reviewers are welcome to correct my understanding and solutioning to this matter :) hramos, if this works, perhaps there would not be a need to push through with #24936. Also, this contributes to #23561. ## Changelog [Internal] [Fixed] - Fix build-ios-e2e build step Pull Request resolved: https://github.com/facebook/react-native/pull/24953 Differential Revision: D15415850 Pulled By: hramos fbshipit-source-id: baaff09f81f01be4da1608e0b2898d037db35c23
RNTester
The RNTester showcases React Native views and modules.
Running this app
Before running the app, make sure you ran:
git clone https://github.com/facebook/react-native.git
cd react-native
npm install
Running on iOS
Both macOS and Xcode are required.
- Open
RNTester/RNTester.xcodeprojin Xcode - Hit the Run button
See Running on device if you want to use a physical device.
Running on iOS with CocoaPods
Similar to above, you can build the app via Xcode with help of CocoaPods.
- Install CocoaPods
- Run
cd RNTester; pod install - Open the generated
RNTesterPods.xcworkspace(this is not checked in). Do not openRNTesterPods.xcodeprojdirectly.
Running on Android
You'll need to have all the prerequisites (SDK, NDK) for Building React Native installed.
Start an Android emulator (Genymotion is recommended).
cd react-native
./gradlew :RNTester:android:app:installDebug
./scripts/packager.sh
Note: Building for the first time can take a while.
Open the RNTester app in your emulator.
See Running on Device in case you want to use a physical device.
Running with Buck
Follow the same setup as running with gradle.
Install Buck from here.
Run the following commands from the react-native folder:
./gradlew :ReactAndroid:packageReactNdkLibsForBuck
buck fetch rntester
buck install -r rntester
./scripts/packager.sh
Note: The native libs are still built using gradle. Full build with buck is coming soon(tm).
Running Detox Tests on iOS
Install Detox from here.
To run the e2e tests locally, run the following commands from the react-native folder:
yarn build-ios-e2e
yarn test-ios-e2e
These are the equivalent of running:
detox build -c ios.sim.release
detox test -c ios.sim.release --cleanup
These build the app in Release mode, so the production code is bundled and included in the built app.
When developing E2E tests, you may want to run in development mode, so that changes to the production code show up immediately. To do this, run:
detox build -c ios.sim.debug
detox test -c ios.sim.debug
You will also need to have Metro Bundler running in another terminal. Note that if you've previously run the E2E tests in release mode, you may need to delete the RNTester/build folder before rerunning detox build.
Building from source
Building the app on both iOS and Android means building the React Native framework from source. This way you're running the latest native and JS code the way you see it in your clone of the github repo.
This is different from apps created using react-native init which have a dependency on a specific version of React Native JS and native code, declared in a package.json file (and build.gradle for Android apps).