Run one of demos' tests with PostgreSQL

[droserasprout]

All integration tests in test_demos.py are run on SQLite. It would be nice to run any of them on Postgresql to check related code. Use dipdup.test.run_postgres_container helper to spawn a temporary container; see test_hasura.py for example.

[binayak9932]

Background

I'm a backend developer with strong experience in Python, SQL (PostgreSQL, SQLite), specializing in data handling and testing with Django. I have a solid track record in backend development, ensuring databases handle and store information accurately and efficiently and contributed to OS .

Approach

I plan to run all necessary tests, document any issues found, and provide clear, organized feedback to address any data handling inconsistencies.