downloadArtifact

CI.yml

# ...
jobs:
  build:
    # ...

  test:
    name: Test Project
    needs: build
    runs-on: macOS-latest
    steps:
    - name: Checkout repository
      uses: actions/checkout@v1

    - name: Download derived data artifact
      uses: actions/download-artifact@v1
      with:
        name: build
    # ...

    - name: Test
      run: |
        set -o pipefail
        xcodebuild test-without-building \
        -scheme iOSGitHubActions \
        -destination 'platform=iOS Simulator,name=iPhone 11 Pro' \
        -derivedDataPath build \
        | xcpretty