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How do you handle auth token refresh in long-running API test suites?Our auth tokens expire after 1 hour. Most CI runs complete in 30–40 minutes so it's fine, but nightly full-suite runs…
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Common pitfalls when using pytest-asyncio with FastAPI tests?I'm testing a FastAPI application with pytest-asyncio and httpx.AsyncClient and hitting a few rough edges. Issues I've…
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What prompts work best for generating pytest tests from an OpenAPI spec?I have a FastAPI service with a well-maintained OpenAPI spec (auto-generated by FastAPI). I want to generate a…
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pytest-xdist vs pytest-parallel — which is more reliable for parallel test execution?We need to parallelise a 600-test pytest suite. Current serial runtime is ~22 minutes, target is under 8 minutes. I've…
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How do you properly clean up database state between pytest tests without killing speed?Our API test suite uses a real PostgreSQL database (Docker, spun up in CI). Each test creates data and we need…
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How do you prevent pytest fixture scope mismatches from causing silent test pollution?We had a bug where a function-scoped test was accidentally using a session-scoped fixture that mutated shared state.…
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How I structure conftest.py files across a large monorepo — the pattern that worksAfter three rewrites, here's the conftest.py structure that finally works for our monorepo (4 services, ~800 tests):…
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Best practices for organizing pytest fixtures in large test suites?I'm working on a fairly large test project (~500 tests across 3 microservices) and our conftest.py files are getting…
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How do you use pytest.mark.parametrize with complex nested data structures?I need to parametrize a test with inputs that are dictionaries containing lists, some optional keys, and some keys that…
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Managing test data in pytest — factory pattern, fixtures, or external files?As our API test suite grows I'm realising ad-hoc test data in each test function is a maintenance nightmare. Three…
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How granular is your test tagging strategy and does it actually get used?We use pytest marks for test organisation: @pytest.mark.slow, @pytest.mark.integration, @pytest.mark.smoke. In theory:…
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Do you practice mutation testing and does it actually improve your test suite?Mutation testing (mutmut for Python, Stryker for JS) sounds powerful in theory: introduce small code changes and verify…
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My local test development environment setup — VSCode extensions and tools I actually usePeople often share CI setups. Here's my local setup for writing and debugging tests: VSCode extensions: - Playwright…
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