pytest plugin help to find coupled tests
Project description
pytest-sherlock
Pytest plugin which help to find coupled tests.
Sometimes we have coupled tests which depend from ordering
For example:
- PASSES
tests/exmaple/test_all_read.py tests/exmaple/test_b_modify.py tests/exmaple/test_c_delete.py
- FAILED
tests/exmaple/test_c_delete.py tests/exmaple/test_b_modify.py tests/exmaple/test_all_read.py
In this case pretty simple to detect coupled tests, but if we have >=1k tests which called before it will hard
Content:
Install
pip install pytest-sherlock
how to use:
pytest tests/exmaple/test_c_delete.py tests/exmaple/test_b_modify.py tests/exmaple/test_all_read.py --flaky-test="test_read_params" -vv
Plugin didn't run all tests, it try to find some possible guilty test and will run first
======================================================================================== test session starts ========================================================================================
collected 10 items
Try to find coupled tests
Step #1:
tests/exmaple/test_b_modify.py::test_modify_random_param PASSED [100%]
tests/exmaple/test_c_delete.py::test_delete_random_param PASSED [200%]
tests/exmaple/test_c_delete.py::test_deleted_passed PASSED [300%]
tests/exmaple/test_c_delete.py::test_do_not_delete PASSED [400%]
tests/exmaple/test_all_read.py::test_read_params COUPLED [500%]
Step #2:
tests/exmaple/test_b_modify.py::test_modify_random_param PASSED [500%]
tests/exmaple/test_c_delete.py::test_delete_random_param PASSED [500%]
tests/exmaple/test_all_read.py::test_read_params COUPLED [500%]
Step #3:
tests/exmaple/test_b_modify.py::test_modify_random_param PASSED [500%]
tests/exmaple/test_all_read.py::test_read_params COUPLED
TODO
I have a couple ideas, how to improve finder coupled tests:
- use AST for detect common peace of code (variables, functions, etc...)
- Also need to add tests for it =)
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