Writing automated tests for Python command-line apps and scripts
ฝัง
- เผยแพร่เมื่อ 2 พ.ค. 2017
- dbader.org/python-tricks ► Write clean and testable Python command line apps and learn by example
Two techniques for writing automated tests for your Python command-line applications and scripts.
In this video you'll see how to structure the entry points of your Python command-line scripts in order to make them easier to test with unit and integration tests using Python's unittest library.
You'll also learn how to use "mocking" and the @mock.patch decorator in the unittest library to put functions that have side-effects on the filesystem under test.
See examples of how these techniques are implemented in the project I show in the video:
- github.com/dbader/photosorter
This project gives you a blueprint for writing testable Python scripts and shows you how to run these tests on a build server (Jenkins, TravisCI, CircleCI, ...) using the pytest test runner.
Interested in the mypy type checker and the Python type annotations that appear in the video? This tutorial will help you get set up:
- • Type-Checking Python P...
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Dude, your tutorials are amazing. You and Corey Schafer are the best. Thank you so much!
You're welcome!
I second that. This is so useful and clear, and to the point.
Very useful, thanks
You're welcome!
sorry kind of new to python
Why are you sending variables in this way ? def move_file(root_folder: str , path: str) ?
Wouldn't def move_file (root_folder , path) work in the same way ?
Is this some sort of validation for a string ?
It's not an improvement to functionality, but rather an improvement to maintainability.
If you're making production code(code that will be read and potentially modified by others), you add type hints to reduce the possibility of others misunderstanding your code.
Even for yourself it can be helpful to add type hints, if the project you're making is getting big and you simply can't remember everything every method does.
So it does the same logic, but is easier to figure out if you read the same code after 2 years of not looking at it.
thanks! i'm from go but this was useful
You're welcome!
*facepalm* so simple... thanks! i almost feel stupid now :))
You're welcome! I'm glad the video was helpful. :-)