[Test] Add integration tests for Druid connector using Docker image #26143
Description
Expected Behavior or Use Case
Introduce integration tests for the Presto Druid connector that run against a live Druid cluster (via Docker image).
Add Integration tests for different Presto SQL operations along with it.
Presto Component, Service, or Connector
Druid connector
Possible Implementation
Use Druid’s Docker image to spin up a Druid cluster as part of integration tests.
Example Screenshots (if appropriate):
N/A
Context
Currently, Presto’s Druid tests are limited to unit-style tests and do not validate against a running cluster. Integration tests will provide stronger coverage, especially for Presto SQL operations at table level, and align with the testing practices used for other connectors.