getting started with pytest (beginner - intermediate) anthony explains #518

I realize I've talked a lot about pytest on the channel, but never given it a proper introduction!

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[tobb]

8:20 pytest also prints out whatever was written to stdout whenever a test fails. So if you're debugging a failing test you can read the output even without using -s.

[theendlessriver]

-v{1, 3} is also very helpful when tests with a more complex comparison fail, e.g. long strings, lists/tuples/dicts with many items. It shows you exactly where the difference occurred, what item is missing etc.
It helps me a lot breaking this down

[iggypei]

I've been on your stream and I didn't realise that you're one of the folks behind PyTest. Good on ya!

[StanislavSchmidt]

Didn't know that including __init__.py would resolve name collisions - thanks!

[shekelboi]

11:57 actually, when I run pytest from the command line, it doesn't work without the __init__.py

[DavidDellsperger]

I assume the `-s` and suppression of I/O extends to the code not only in the test file (t_test.py) but also the original file (t.py)?

[varioustoxins]

Nice video, just checked I was sure unit test wasn’t in Python 1. Python predates junit by about 7 years and unit test was inspired by junit. python
20 February 1991. JUnit was born on a flight from Zurich to the 1997 OOPSLA in Atlanta.

[johnwt]

I never knew there was a name to call how you name your variables:
camelCase
snake_case
PascalCase
kebab-case

[yomajo]

flask app is dockerized. Uses rq worker, redis, postgres as compose services. How should one thing about testing such application?

[MrBillyClanton]

Nice video, exactly what I was looking for and the right amount of detail and explanation. The only downside is you have not done a video on Allure reporting :)

[wwijsman]

I honestly prefer unittest. It is just nice to have it integrated in the language. Other than that I don't use it very differently from how you use pytest in this video.

[dukex]

Thanks, Anthony. Can you make a video about 'indirect' in parametrize?
And also request param in fixtures?

[alice-smith]

Why all files of pyupgrade starts with _?

[reyjanson]

Awesome video! can we also have a video on Mock, patching, monkey patch..etc please!

[preocts]

TIL about -s for print debugging an incorrectly passing test. I've normally just gone with the tried and true 1 / 0 in the test if it comes to that. haha

The plugins certainly make the tool shine brighter than it already does. Off the top of my head, pytest-randomly and pytest-repeat are two I use regularly to shake out and expose tricky pollution.

[jeffreyalidochair]

why do you put an underscore infront of main like _main.py, and the other files

[araujoao]

Thanks a lot for the video. Coming from other language backgrounds, it helped a lot to clarify some info. Plus, it was short and enlightening

[dstinYwOw]

Great video!
I've quickly tested some time ago unittest from python and I found out that writing assertion keyword is not strictly prohibited, maaaaybeee they changed something? I don't know. But pytest is by far most useful 3rd party tool downloadable from PIP! Thanks for sharing this tutorial!

[muddasirkhan]

Hey Anthony! Why do you not like oop? 😊 its a battle am fighting to learn or not but i checked many of your repos and didnt see you using classes, so was hoping to hear your thoughts

[tandavme]

Thanks for the video! Many of your repos have testing directory, what do you store there? A code that is related for tests but you keep it separate because tests directory should contain only tests? Or my guess is wrong