actions/macos: be more robust in waiting for the service to be up

.github/workflows/macos.yml

@@ -116,12 +116,30 @@ jobs:
  run: brew test --verbose eturnal
  - name: Start eturnal service
  run: brew services start eturnal
- - name: Wait shortly
- run: sleep 10
+ - name: Check if eturnal is up & running ...
+ run: |
+ max_iterations=60
+ iterations=0
+ while true
+ do
+ iterations="$(expr $iterations + 1)"
+ echo ">> Attempt $iterations from $max_iterations"
+ sleep 1
+
+ if [ "$(eturnalctl ping)" = 'pong' ]; then
+ echo '>> eturnal is running! ...'
+ break
+ fi
+
+ if [ "$iterations" -ge "$max_iterations" ]; then
+ echo '>> Loop Timeout!'
+ exit 1
+ fi
+ done
+ - name: Print eturnal info
+ run: eturnalctl info
  - name: Create test credentials
  run: $(brew --prefix)/opt/eturnal/bin/eturnalctl credentials
- - name: Test eturnalctl on $PATH
- run: eturnalctl info
  - name: Stop eturnal service
  run: brew services stop eturnal
  - name: Lint formula