Testing

In Memory

By default the tests in impl/spanner/... use an in-memory implementation of spanner that does not require any local setup.

Cloud Spanner Emulator

To test against a local docker instance of spanner, start the emulator and set environment flags.

gcloud beta emulators spanner start
$(gcloud beta emulators spanner env-init)

View and control the emulator with the gcloud command:

gcloud config configurations create emulator
gcloud config set auth/disable_credentials true
gcloud config set project fake-proj
gcloud config set api_endpoint_overrides/spanner http://localhost:9020/
gcloud config configurations activate emulator
gcloud spanner instances list
gcloud spanner databases list --instance fake-instance

Cloud Spanner

To test against an instance of spanner hosted in Google Cloud:

1. Create a Spanner instance using the Google Cloud Console.
2. Switch the gcloud configuration to default and authenticate.

unset SPANNER_EMULATOR_HOST
gcloud config configurations activate default
gcloud auth application-default login
go test ./impl/spanner/... -count 1 -args --fake_db=false --db_project=$GCP_PROJECT --db_instance=$INSTANCE_ID