Global state and circular dependency issues complicate unit testing
6/10 MediumFastAPI's global app object state is difficult to patch in unit tests. Accessing global state requires importing from other files, easily leading to circular dependencies, inline imports, and problematic testing patterns.
Collection History
Query: “What are the most common pain points with FastAPI for developers in 2025?”4/4/2026
FastAPI itself is defined in the global State um why is the bad practice it's pretty hard to patch um in unit tests for example or if you want to um have access to the global State you have to import it from another file you easily end up in circular dependencies
Created: 4/4/2026Updated: 4/4/2026