pytest-find-dependencies
A pytest plugin to find dependencies between tests
Decision gist · record as of 2026-08-14
Yes. The plugin solves a real problem—hidden test dependencies are common and hard to find manually. It has low install friction, active maintenance, permissive licensing, no known vulnerabilities, and runs on modern Python versions. Use it if you suspect test interdependencies or want to verify test isolation before parallelizing; the runtime overhead is modest and the diagnostic value is high.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires pytest to be installed; Python 3.9 or later.
- Low install friction with a single runtime dependency on pytest.
- Actively maintained as of 2025-07-16 with recent commits; the repository is not archived and has received updates within the past year.
License · maintenance · safety
MIT (permissive) — MIT license permits free use, modification, and distribution with minimal restrictions—suitable for both open-source and commercial projects.
last release 2025-07-16 (394 days) · last repo commit 2026-08-12 · 5 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 983,229 downloads/mo, #4,582 on PyPI
Alternatives
Verify before relying
pip install pytest-find-dependencies
pytest --find-dependencies
# Output shows which tests depend on others, e.g.:
# test_one.py::test_b depends on test_one.py::test_e- Whether the binary search approach reliably catches all test dependencies or only a subset in practice.
- Performance impact on large test suites beyond the documented 1.5x to 2x slowdown estimates.
- How well permanent environment changes (e.g., database state) are detected in parallel vs. serial mode.
What it is and what it does
pytest-find-dependencies is a pytest plugin that automates the detection of test interdependencies—situations where one test's success or failure depends on the execution of another test. Tests should ideally be independent, but in practice many codebases accumulate hidden dependencies that only surface when test order changes. This plugin runs your test suite in both forward and reverse order, then uses binary search on any failing tests to isolate the specific test causing the failure.
The plugin reports found dependencies clearly and can also flag tests that fail permanently after all tests run, indicating environmental side effects that weren't cleaned up. It integrates with pytest's command-line interface via the `--find-dependencies` flag and supports options to run tests serially, ignore specific test markers, and control exit codes. It detects pytest-xdist and disables distribution for its internal test runs to preserve ordering.
Use it for
- Identify hidden test dependencies in a legacy test suite before refactoring or parallelizing tests.
- Debug why tests pass in isolation but fail in a full run—pinpoint the offending test automatically.
- Verify test cleanup: detect tests that leave permanent state changes (e.g., database records) affecting later tests.
- Ensure test order independence before adopting parallel test runners like pytest-xdist.
- Validate that test markers from ordering plugins (pytest-order, pytest-dependency) are working as intended.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
The plugin solves a real problem—hidden test dependencies are common and hard to find manually. It has low install friction, active maintenance, permissive licensing, no known vulnerabilities, and runs on modern Python versions. Use it if you suspect test interdependencies or want to verify test isolation before parallelizing; the runtime overhead is modest and the diagnostic value is high.
Install
pytest-find-dependencies on PyPI
Before you install
Low install friction with a single runtime dependency on pytest. Actively maintained as of 2025-07-16 with recent commits; the repository is not archived and has received updates within the past year.
Requires pytest to be installed; Python 3.9 or later.
License in practice
MIT license permits free use, modification, and distribution with minimal restrictions—suitable for both open-source and commercial projects.
Quickstart
pip install pytest-find-dependencies
pytest --find-dependencies
# Output shows which tests depend on others, e.g.:
# test_one.py::test_b depends on test_one.py::test_eVerify before relying
- Whether the binary search approach reliably catches all test dependencies or only a subset in practice.
- Performance impact on large test suites beyond the documented 1.5x to 2x slowdown estimates.
- How well permanent environment changes (e.g., database state) are detected in parallel vs. serial mode.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.9 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 1 packagepytest |
| Maintenance | Actively maintained 394 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 983,229 / month, #4,582 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableEnvironment :: ConsoleIntended Audience :: DevelopersOperating System :: MacOSOperating System :: Microsoft :: WindowsOperating System :: POSIX :: LinuxProgramming Language :: PythonProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.9Topic :: Software Development :: Quality AssuranceTopic :: Software Development :: TestingTopic :: Utilities |
Evidence: pytest_find_dependencies-0.6.0-py3-none-any.whl
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