mozilla-services
Db unit tests fail against Spanner emulator
We don’t explicitly roll back test transactions against spanner (we rely on diesel test_transactions for this, of which there’s no equivalent on our spanner impl). This seems to trigger a “bug” in the spanner emulator where it doesn’t clean up the previous transaction, then later errors out that the emulator only supports handling of one transaction at a time.
We can fix this by manually rolling back the transactions ourselves in the test, we would need something along the lines of the db_pool.transaction_http/http methods that wraps around every db unit test, which would begin a transaction and roll it all back at the end.
This would also let us cleanup some of the unfortunate implicit transaction handling in the spanner implementation.
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