skippy-cov

mkdir my_skippy_project && cd my_skippy_project git init -b main pip install skippy-cov pytest coverage # Create a simple module and test file mkdir src && mkdir src/tests echo "def func_a():\n return 'A'\ndef func_b():\n return 'B'" > src/my_module.py echo "import pytest\nfrom src.my_module import func_a, func_b\n\ndef test_func_a():\n assert func_a() == 'A'\n\ndef test_func_b():\n assert func_b() == 'B'" > src/tests/test_my_module.py touch src/__init__.py src/tests/__init__.py git add . git commit -m "Initial code and tests" echo "\n--- First run: Collect all coverage data ---" pytest --skippy-cov --cov=src --cov-report=xml src/tests/ # Simulate a change to func_a and add a new test on a feature branch git checkout -b feature/new-func echo "def func_a():\n return 'A_modified'\ndef func_b():\n return 'B'\ndef func_c():\n return 'C'" > src/my_module.py echo "import pytest\nfrom src.my_module import func_a, func_b, func_c\n\ndef test_func_a():\n assert func_a() == 'A_modified'\n\ndef test_func_func_b():\n assert func_b() == 'B'\n\ndef test_func_c():\n assert func_c() == 'C'" > src/tests/test_my_module.py git add . git commit -m "Add func_c and modify func_a" echo "\n--- Second run: Run only affected tests using diff ---" # Generate a diff between 'main' branch and current 'feature/new-func' branch git diff main...feature/new-func -- src/my_module.py > /tmp/my_skippy_diff.diff pytest --skippy-cov=/tmp/my_skippy_diff.diff src/tests/ echo "Expected: Only tests related to func_a (modified) and func_c (new) should run."