486dx / utility_Python

Collection of Python utility scripts & Python basics & Python OOP basic demo

Utility_Python

• Collection of python working scripts and OOP basic demo

Development

(ds_dash) yennanliu@yennanliu-MBP:~/utility_python(master⚡) » pytest -v tests

# ============================ test session starts =============================
# platform darwin -- Python 3.5.4, pytest-5.0.1, py-1.8.0, pluggy-0.12.0 -- /Users/yennanliu/anaconda3/envs/ds_dash/bin/python
# cachedir: .pytest_cache
# rootdir: /Users/yennanliu/utility_python
# plugins: celery-4.2.1
# collected 1 item                                                             

# tests/unit_test.py::CodeToTestTestCase::test_database_drop_table_call PASSED [100%]

# ========================== 1 passed in 0.05 seconds ==========================

Ref

• Functional programming (fp) VS Object-oriented programming (OOP)

  • https://www.coursera.org/lecture/programming-languages-part-c/oop-versus-functional-decomposition-mKEXO
  • https://stackoverflow.com/questions/2984460/do-you-use-python-mostly-for-its-functional-or-object-oriented-features

• Regular expression doc

  • https://www.w3schools.com/python/python_regex.asp

• Regular expression online playground

  • https://regex101.com/

• Regular expression tutorial

  • https://regexone.com/

• Python test tutorial

  • https://realpython.com/tutorials/testing/
  • Use a decorator : when all of the code in your test function body uses a mock.
  • Use a context manager : when some of the code in your test function uses a mock and other code references the actual function.
  • Use a patcher : when you need to explicitly start and stop mocking a function across multiple tests (e.g. the setUp() and tearDown() functions in a test class).

• Unit test mock DB func with python

  • https://www.stevenmaude.co.uk/posts/how-to-use-mock-in-python-to-mock?fbclid=IwAR15w5IZesgbksFYkp_HBxMXRVk2ip1LMnZ6J3Jf4_LjXuaQLPzCNk1x_58
  • https://stackoverflow.com/questions/58873971/python-mock-multiple-queries-in-a-function-using-pytest-mock?fbclid=IwAR3Ouw0im_iFT6PBIclw5lLwNXs3lCTfayQdmZdYfYEpoFyLDmzHVMnf6zQ

• Python Mock library intro

  • https://realpython.com/python-mock-library/#patch
  • https://docs.python.org/3/library/unittest.mock.html#unittest.mock.Mock.side_effect
    • A .return_value defines what the method will return
    • A .side_effect defines what happens when you call the mocked function.

• Python interface intro

  • https://realpython.com/python-interface/

• pytest with fixture

  • https://docs.pytest.org/en/latest/fixture.html