Test workflow (react-native-datetimepicker/datetimepicker)

The Test workflow from react-native-datetimepicker/datetimepicker, explained and optimized by Latchkey.

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Source: react-native-datetimepicker/datetimepicker.github/workflows/test.ymlLicense MITView source

What it does

This is the Test workflow from the react-native-datetimepicker/datetimepicker repository, a real project running GitHub Actions. It is shown here with attribution under its MIT license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

workflow (.yml)

name: Test

on:
  push:
    branches: [master]
  pull_request:

concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
  cancel-in-progress: true

jobs:
  analyse_js:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
      - run: corepack enable
      - uses: actions/setup-node@v6
        with:
          node-version: lts/*
          cache: yarn
      - run: yarn install --immutable
      - name: Run ESLint
        run: yarn lint
      - name: Jest
        run: yarn test

  e2e_ios:
    runs-on: macos-26
    strategy:
      fail-fast: false
      matrix:
        include:
          - arch: old
            pod-env: 'RCT_NEW_ARCH_ENABLED=0'
          - arch: new
            pod-env: 'RCT_NEW_ARCH_ENABLED=1'
    name: e2e_ios (${{ matrix.arch }} arch)
    env:
      DEVELOPER_DIR: /Applications/Xcode_26.3.app/Contents/Developer
    steps:
      - uses: actions/checkout@v6
      - name: Boot iPhone 17 Pro Max simulator
        run: |
          DEVICE_ID=$(xcrun simctl list devices available -j | jq -r '.devices | to_entries[] | .value[] | select(.name == "iPhone 17 Pro Max") | .udid' | head -1)
          xcrun simctl boot "$DEVICE_ID"
      - name: Install applesimutils
        run: |
          HOMEBREW_NO_INSTALL_CLEANUP=1 HOMEBREW_NO_AUTO_UPDATE=1 brew tap wix/brew >/dev/null
          HOMEBREW_NO_INSTALL_CLEANUP=1 HOMEBREW_NO_AUTO_UPDATE=1 brew install applesimutils >/dev/null
      - run: corepack enable
      - uses: actions/setup-node@v6
        with:
          node-version: lts/*
          cache: yarn
      - run: yarn install --immutable
      - name: Bundle JS
        run: yarn bundle:ios
      - uses: actions/cache@v5
        with:
          path: example/ios/Pods
          key: pods-${{ matrix.arch }}-${{ runner.os }}-${{ hashFiles('example/ios/Podfile.lock') }}
      - name: Pod install
        run: cd example && ${{ matrix.pod-env }} RCT_USE_RN_DEP=1 RCT_USE_PREBUILT_RNCORE=1 npx pod-install
      - name: Build app for e2e tests
        run: yarn detox:ios:build:release
      - name: Run e2e tests
        run: yarn detox:ios:test:release
      - uses: actions/upload-artifact@v7
        if: failure()
        with:
          name: ios-e2e-${{ matrix.arch }}-artifacts
          path: artifacts
          retention-days: 14

  e2e_android:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        include:
          - arch: old
            new-arch-enabled: false
          - arch: new
            new-arch-enabled: true
    name: e2e_android (${{ matrix.arch }} arch)
    env:
      GRADLE_OPTS: '-Dorg.gradle.jvmargs="-Xmx4g -XX:+HeapDumpOnOutOfMemoryError" -Dorg.gradle.daemon=false'
    steps:
      - uses: actions/checkout@v6
      - run: corepack enable
      - uses: actions/setup-node@v6
        with:
          node-version: lts/*
          cache: yarn
      - uses: actions/setup-java@v5
        with:
          distribution: zulu
          java-version: 17
      - uses: actions/cache@v5
        with:
          path: |
            ~/.gradle/caches
            ~/.gradle/wrapper
          key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
      - run: yarn install --immutable
      - name: Bundle JS
        run: yarn bundle:android
      - run: yarn generateManifest
      - name: Build app for e2e tests
        run: ORG_GRADLE_PROJECT_newArchEnabled=${{ matrix.new-arch-enabled }} yarn detox:android:build:release
      - name: Enable KVM
        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: Run e2e tests
        uses: reactivecircus/android-emulator-runner@v2
        with:
          api-level: 29
          avd-name: TestingAVD
          profile: pixel_6_pro
          disable-animations: true
          script: |
            adb root
            adb wait-for-device
            adb shell setprop persist.sys.timezone "Europe/Prague"
            adb shell settings put global auto_time_zone 0
            adb shell am broadcast -a android.intent.action.TIMEZONE_CHANGED
            adb shell getprop persist.sys.timezone
            yarn detox:android:test:release
      - uses: actions/upload-artifact@v7
        if: failure()
        with:
          name: android-e2e-${{ matrix.arch }}-artifacts
          path: artifacts
          retention-days: 14

The same workflow, on Latchkey

Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.

name: Test
 
on:
  push:
    branches: [master]
  pull_request:
 
concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.ref }}
  cancel-in-progress: true
 
jobs:
  analyse_js:
    timeout-minutes: 30
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v6
      - run: corepack enable
      - uses: actions/setup-node@v6
        with:
          node-version: lts/*
          cache: yarn
      - run: yarn install --immutable
      - name: Run ESLint
        run: yarn lint
      - name: Jest
        run: yarn test
 
  e2e_ios:
    timeout-minutes: 30
    runs-on: macos-26
    strategy:
      fail-fast: false
      matrix:
        include:
          - arch: old
            pod-env: 'RCT_NEW_ARCH_ENABLED=0'
          - arch: new
            pod-env: 'RCT_NEW_ARCH_ENABLED=1'
    name: e2e_ios (${{ matrix.arch }} arch)
    env:
      DEVELOPER_DIR: /Applications/Xcode_26.3.app/Contents/Developer
    steps:
      - uses: actions/checkout@v6
      - name: Boot iPhone 17 Pro Max simulator
        run: |
          DEVICE_ID=$(xcrun simctl list devices available -j | jq -r '.devices | to_entries[] | .value[] | select(.name == "iPhone 17 Pro Max") | .udid' | head -1)
          xcrun simctl boot "$DEVICE_ID"
      - name: Install applesimutils
        run: |
          HOMEBREW_NO_INSTALL_CLEANUP=1 HOMEBREW_NO_AUTO_UPDATE=1 brew tap wix/brew >/dev/null
          HOMEBREW_NO_INSTALL_CLEANUP=1 HOMEBREW_NO_AUTO_UPDATE=1 brew install applesimutils >/dev/null
      - run: corepack enable
      - uses: actions/setup-node@v6
        with:
          node-version: lts/*
          cache: yarn
      - run: yarn install --immutable
      - name: Bundle JS
        run: yarn bundle:ios
      - uses: actions/cache@v5
        with:
          path: example/ios/Pods
          key: pods-${{ matrix.arch }}-${{ runner.os }}-${{ hashFiles('example/ios/Podfile.lock') }}
      - name: Pod install
        run: cd example && ${{ matrix.pod-env }} RCT_USE_RN_DEP=1 RCT_USE_PREBUILT_RNCORE=1 npx pod-install
      - name: Build app for e2e tests
        run: yarn detox:ios:build:release
      - name: Run e2e tests
        run: yarn detox:ios:test:release
      - uses: actions/upload-artifact@v7
        if: failure()
        with:
          name: ios-e2e-${{ matrix.arch }}-artifacts
          path: artifacts
          retention-days: 14
 
  e2e_android:
    timeout-minutes: 30
    runs-on: latchkey-small
    strategy:
      fail-fast: false
      matrix:
        include:
          - arch: old
            new-arch-enabled: false
          - arch: new
            new-arch-enabled: true
    name: e2e_android (${{ matrix.arch }} arch)
    env:
      GRADLE_OPTS: '-Dorg.gradle.jvmargs="-Xmx4g -XX:+HeapDumpOnOutOfMemoryError" -Dorg.gradle.daemon=false'
    steps:
      - uses: actions/checkout@v6
      - run: corepack enable
      - uses: actions/setup-node@v6
        with:
          node-version: lts/*
          cache: yarn
      - uses: actions/setup-java@v5
        with:
          distribution: zulu
          java-version: 17
      - uses: actions/cache@v5
        with:
          path: |
            ~/.gradle/caches
            ~/.gradle/wrapper
          key: gradle-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
      - run: yarn install --immutable
      - name: Bundle JS
        run: yarn bundle:android
      - run: yarn generateManifest
      - name: Build app for e2e tests
        run: ORG_GRADLE_PROJECT_newArchEnabled=${{ matrix.new-arch-enabled }} yarn detox:android:build:release
      - name: Enable KVM
        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: Run e2e tests
        uses: reactivecircus/android-emulator-runner@v2
        with:
          api-level: 29
          avd-name: TestingAVD
          profile: pixel_6_pro
          disable-animations: true
          script: |
            adb root
            adb wait-for-device
            adb shell setprop persist.sys.timezone "Europe/Prague"
            adb shell settings put global auto_time_zone 0
            adb shell am broadcast -a android.intent.action.TIMEZONE_CHANGED
            adb shell getprop persist.sys.timezone
            yarn detox:android:test:release
      - uses: actions/upload-artifact@v7
        if: failure()
        with:
          name: android-e2e-${{ matrix.arch }}-artifacts
          path: artifacts
          retention-days: 14

What changed

Run on Latchkey managed runners with one line (runs-on), which apply the fixes below automatically and self-heal transient failures. This example uses latchkey-small; pick the runner size that fits the job.
Add a job timeout so a hung step cannot burn hours of runner time.

1 third-party action is referenced by a movable tag. Pin it to the commit SHA (Latchkey resolves and applies this automatically) so a repointed tag cannot change what runs.

What Latchkey heals here

This workflow has steps that commonly fail on transient issues (network, registries, flaky browsers). On Latchkey managed runners they are detected, retried, and self-healed instead of failing your build:

Dependency installs
End-to-end and browser tests

This workflow runs 3 jobs per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow

actions/checkout actions/setup-node actions/cache actions/upload-artifact actions/setup-java