Make X11/etc persistent; add ffmpeg

Author: xeger

.github/workflows/main.yml

@@ -28,24 +28,67 @@ jobs:
         with:
           bundler-cache: true
           ruby-version: ${{ matrix.ruby }}
+      - name: Install gem
+        run: gem install syntax_tree
       - name: Compile extension
         run: |
           yarn install --frozen-lockfile
           yarn compile
-      - name: Install gem
-        run: gem install syntax_tree
-      - name: Setup upterm session
-        uses: lhotari/action-upterm@v1
-        with:
-          limit-access-to-actor: true
-      - name: Run tests
+      - name: Setup GUI Environment
+        run: |
+          # prerequisites
+          sudo apt-get install -yq dbus-x11 ffmpeg > /dev/null
+          mkdir -p ~/bin
+          mkdir -p ~/var/run
+          cat <<EOF > ~/bin/xvfb-daemon
+          #! /bin/bash
+          echo DISPLAY=\$DISPLAY >> ${GITHUB_ENV}
+          echo XAUTHORITY=\$XAUTHORITY >> ${GITHUB_ENV}
+          sleep 86400
+          EOF
+          chmod a+x ~/bin/xvfb-daemon
+          dbus-launch >> ${GITHUB_ENV}
+          start-stop-daemon --start --quiet --pidfile ~/var/run/Xvfb.pid --make-pidfile --background --exec /usr/bin/xvfb-run -- ~/bin/xvfb-daemon
+          echo "Waiting for Xvfb to start..."
+          while ! grep -q DISPLAY= ${GITHUB_ENV}; do
+            echo -n .
+            sleep 3
+          done
+        if: runner.os == 'Linux'
+      - name: Start Screen Recording
         run: |
-          sudo apt install dbus-x11
-          dbus-launch xvfb-run -a npm test
+          no_close=#--no-close # uncomment to see ffmpeg output (i.e. leave stdio open)
+          start-stop-daemon $no_close --start --quiet --pidfile ~/var/run/ffmpeg.pid --make-pidfile --background --exec /usr/bin/ffmpeg -- -f x11grab -video_size cif -framerate 10 -i ${DISPLAY}.0+0,0 $PWD/test.mp4
+          pid=`cat ~/var/run/ffmpeg.pid`
+          echo "Waiting for ffmpeg (pid $pid) to start recording (display $DISPLAY)..."
+          while [ ! -f $PWD/test.mp4 ]; do
+            echo -n .
+            sleep 3
+          done
         if: runner.os == 'Linux'
-      - name: Run tests
+      # - name: Setup SSH Debugging
+      #   uses: lhotari/action-upterm@v1
+      #   with:
+      #     limit-access-to-actor: true
+      - name: Run Tests
         run: npm test
         if: runner.os != 'Linux'
+      - name: Stop Screen Recording
+        run: |
+          start-stop-daemon --stop --pidfile ~/var/run/ffmpeg.pid
+        if: runner.os == 'Linux'
+      - name: Archive Screen Recording
+        uses: actions/upload-artifact@v3
+        with:
+          name: test-video
+          path: |
+            test.mp4
+        if: runner.os == 'Linux'
+      - name: Teardown GUI Environment
+        run: |
+          start-stop-daemon --stop --pidfile ~/var/run/Xvfb.pid
+          kill $DBUS_SESSION_BUS_PID
+        if: runner.os == 'Linux'
   automerge:
     name: AutoMerge
     needs: ci