ui-tests.yml

name: UI Tests

on:
  pull_request:
    branches: [ "main" ]

permissions:
  contents: read

jobs:
  ui-test:
    strategy:
      # Keep running the other platforms even if one fails so we get full signal
      fail-fast: false
      matrix:
        os: [ubuntu-latest, windows-latest, macos-latest]

    runs-on: ${{ matrix.os }}

    steps:
      - uses: actions/checkout@v4

      - name: Set up JDK 17
        uses: actions/setup-java@v4
        with:
          distribution: temurin
          java-version: 17

      - name: Setup Gradle
        uses: gradle/actions/setup-gradle@v4

      # Pre-download IDE and build plugin so the background launch is fast and doesn't fail silently.
      - name: Build plugin and prepare sandbox
        run: ./gradlew prepareSandbox_runIdeForUiTests

      # Linux runners need a virtual display AND GUI toolkit libraries for the IDE to render.
      - name: Install display dependencies (Linux)
        if: runner.os == 'Linux'
        run: |
          sudo apt-get update
          sudo apt-get install -y xvfb libxrender1 libxtst6 libxi6 libxrandr2 libfreetype6 fontconfig
          Xvfb :99 -screen 0 1920x1080x24 &
          sleep 2
          echo "DISPLAY=:99" >> "$GITHUB_ENV"

      - name: Clean up test module (pre-test)
        run: rm -rf src/uiTest/testProject/repository
        shell: bash

      # Run IDE + tests in a single step so the backgrounded IDE process stays alive.
      - name: Start IDE, wait for robot server, and run UI tests
        shell: bash
        env:
          DISPLAY: ${{ env.DISPLAY }}
        run: |
          echo "Starting IDE with robot server..."
          ./gradlew runIdeForUiTests > ide-output.log 2>&1 &
          IDE_PID=$!
          echo "IDE PID: $IDE_PID"

          # Poll until the robot server port accepts connections.
          # curl without -f returns 0 for ANY HTTP response (even 404), which is fine —
          # we just need to know the server is listening. curl is available on all
          # GitHub Actions runners (Linux, macOS, Windows).
          echo "Waiting for robot server on port 8082..."
          MAX_WAIT=90
          ATTEMPT=0
          until curl -s --connect-timeout 2 -o /dev/null http://127.0.0.1:8082/; do
            ATTEMPT=$((ATTEMPT + 1))
            if [ "$ATTEMPT" -ge "$MAX_WAIT" ]; then
              echo "ERROR: robot server did not start after $((MAX_WAIT * 5)) seconds"
              echo "=== IDE output (last 200 lines) ==="
              tail -200 ide-output.log 2>/dev/null || true
              exit 1
            fi
            echo "  attempt $ATTEMPT/$MAX_WAIT — not ready yet, retrying in 5s..."
            sleep 5
          done
          echo "Robot server is ready!"

          # Run the UI tests
          ./gradlew uiTest || TEST_EXIT=$?

          echo "=== IDE output (last 50 lines) ==="
          tail -50 ide-output.log 2>/dev/null || true

          exit ${TEST_EXIT:-0}

      - name: Clean up test module (post-test)
        if: always()
        run: |
          rm -rf src/uiTest/testProject/repository
          git checkout -- src/uiTest/testProject/settings.gradle.kts
        shell: bash

      - name: Upload IDE output log
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: ide-output-${{ matrix.os }}
          path: ide-output.log
          if-no-files-found: ignore

      - name: Upload test report
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: ui-test-results-${{ matrix.os }}
          path: build/reports/tests/uiTest/
          if-no-files-found: ignore

      # Upload IDE logs to help diagnose failures
      - name: Upload IDE logs on failure
        if: failure()
        uses: actions/upload-artifact@v4
        with:
          name: ide-logs-${{ matrix.os }}
          path: build/idea-sandbox/system/log/
          if-no-files-found: ignore