I'm using Apache Ignite as a distributed cache whose configuration I've generated based on an existing database using the Ignite Web Console--it's a writethrough cache that will periodically persist cached data to the Postgres database. However, I want to write unit tests in Java for my project, and do not have a reliable test database to use.
Part of what I'm wanting to test are the cache queries I'm occasionally running on my Ignite cache--I wanted to use sql queries to do this. However, I can't figure out how to preserve the queryEntities from my cache configuration without also having the database. I tried making a new xml file for test purposes that only configures the caches I need, and only sets the query entities (not the datastore or any db information), but when I run the test I get a "Failed to initialize DB connection" error--even though there is no DB defined in my config.
Is there a way to leverage these query entities without actually connecting the cache to a database? If not, is there a good way to spin up a postgres database as a part of a unit test?
You need to check persistence store configuration and disable that first to have everything in memory.
Next, make sure you are not initializing any DB connection while having your test cache configuration(You already said you looked after this fact).