Running the firestore emulator in a CI environment without IPv6

test-firestore-on-ci.sh

#!/bin/sh

EMULATOR="cloud-firestore-emulator"
EMULATOR_TARGET=$(find ~/.cache/firebase/emulators/ -type f -name "$EMULATOR*.jar" | sort -r | head -n1)

if [ -z "$EMULATOR_TARGET" ]; then
  echo "Could not find the firestore emulator. Ending test run."
  exit 1
fi

# I've found that the java process is not always killed properly,
# causing issues on subsequent runs... so let's clean things up when we're done (or have errored)
killEmulatorPid()
{
  EMULATOR_PID=$(pgrep -f "$EMULATOR")

  if ! [ -z "$EMULATOR_PID" ]; then
    kill -9 "$EMULATOR_PID"
  fi
}

java -jar "$EMULATOR_TARGET" --host=127.0.0.1 --port=8080 > /dev/null 2> firestore-emulator.log &
RETRIES=0
RETRY_LIMIT=10

while [ $RETRIES -lt $RETRY_LIMIT ]; do
  sleep 1
  echo "Pinging firestore emulator"

  if nc -z localhost 8080; then
    break
  fi

  let RETRIES+=1

  if [ $RETRIES -ge $RETRY_LIMIT ]; then
    echo "Could not find the firestore emulator. Ending test run."
    killEmulatorPid
    exit 1
  fi
done

yarn test

echo "End of test run. Cleaning up the firestore emulator."
killEmulatorPid

Hi @danahartweg,

Thanks for this script. From what I can tell, it assumes that you already have the cloud-firestore-emulator available in the ~/.cache/firebase/emulators/ directory - is that correct?

Hi @danahartweg,

Thanks for this script. From what I can tell, it assumes that you already have the cloud-firestore-emulator available in the ~/.cache/firebase/emulators/ directory - is that correct?

Yes, this comes from already setting up the simulator on building the Docker image. E.g. via RUN firebase setup:emulators:firestore

@pschneider your answer is spot on, thanks! @jperasmus thanks for your patience, I'm not entirely sure how I missed your comment from so long ago.

Thanks, got it working in the end. AFAIK, GitHub doesn't do notifications (or didn't at one point) for comments on Gists.