bennythejudge/Pytest Intro Assignments.rst

## Pytest Intro Assignments.rst

      
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              Pytest Intro Assignments.rst
            
          
    Pytest Introduction

Copyright 2018 - Matt Harrison
@__mharrison__

D - Decide
R - Relax
M - Motivation
O - Observe
M - Mechanics

Assignment 1


Install pytest in a virtual environment
Run:
pytest -h

Assignment 2


Create a directory/module Integer/integr.py (note spelling).

Create a function, parse, that accepts a string of the form "1,3,5,9" that returns a list of integers ([1, 3, 5, 9])

Create a test directory and test file Integer/test/test_integr.py

Create a test function, test_basic that asserts that integr.parse works with the input "1,3,5,9"

Run pytest on test/test_integr.py

Assignment 3


Create a test function, test_bad1 that asserts that an error is raised when integr.parse is called with 'bad input'. Use a context manager (with)
Create a test function, test_bad2 that asserts that an error is raised when integr.parse is called with '1-3,12-15'. Use the @pytest.mark.xfail decorator.

Assignment 4


Add a __name__ check that will run pytest on test/test_integr.py if it is executed with python
Run the command line option to collect the tests (but not execute them).
Run only the test_basic test from the command line.

Assignment 5


Create a doctest on the integr.py module that shows an example of running the parse function.
Run the doctest via pytest with a command line option
Create a pytest.ini file. Add an option to the configuration file to run the doctests when pytest is invoked
Run the doctest via pytest without a command line option

Assignment 6


Run the tests that have bad in the name
Mark test_bad1 and test_bad2 with the wrong name.
Run only tests that are marked with wrong.
Run pytest with --strict
Register bad as a marker in pytest.ini
Run pytest with --strict