Crucial Exams

GCP Professional Cloud Architect Practice Question

Your organization's CI pipeline runs integration tests for a Go microservice that publishes to Cloud Pub/Sub, stores data in Firestore (Native mode), and queries Cloud Bigtable. A Docker test container starts local emulators for the three services on ports 8085, 8080, and 9000. The tests still fail because the Go client libraries exit with "could not find Application Default Credentials." Which single change will allow the tests to run entirely against the emulators without providing any credentials?

  • Run gcloud auth application-default login --no-launch-browser inside the container to create a dummy credential file after the emulators start.

  • Declare the environment variables PUBSUB_EMULATOR_HOST=localhost:8085, FIRESTORE_EMULATOR_HOST=localhost:8080, and BIGTABLE_EMULATOR_HOST=localhost:9000 before executing the test suite.

  • Execute gcloud config set auth/disable_credentials true in the container to tell every client library to ignore authentication.

  • Set the environment variable GOOGLE_APPLICATION_CREDENTIALS to /dev/null so the libraries cannot find a credential file.

GCP Professional Cloud Architect
Managing implementation
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