Test-Driven Development is great. If you're a Pythonista, it gets even better with pytest - a framework that makes building simple and scalable tes...
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Hey Kinyanjui. Thanks for this series.
I'm just getting started with pytest. I have a program that has multiple user inputs. I wrote 3 basic tests so far. All using if statements then asserts.
When I run
pytest card.py -s, the program runs and I have to input all the data, then I get the message whether the tests have passed or not.My question is, how can I run the tests without the code having to run? Does it depend on how I wrote the tests?
Hey @dmahely ! Thanks for reading, and I'm glad you liked it. Sorry for the late reply, it's been a while since I was here.
You can automate the tests by passing in mock data. Do you have the code hosted on GitHub or somewhere I can have a look so I can guide you on how to do it?
Is that what automated tests mean? π
The code was for a technical test that I've since submitted, and the instructions included not putting it on GitHub. May I reach out to you on Twitter?
Yeah, feel free to reach out on Twitter.
I receive an error which begins like this(I've called my python file "main.py" instead of "hello.py"):
ERRORS =================================================================
_______________________________________________________ ERROR collecting main.py ________________________________________________________
env\lib\site-packages_pytest\python.py:493: in _importtestmodule
...
Can you help me with that? By the way this is a great tutorial Kinyanjui, can't thank you enough.
(P.S: Also just since it might matter, I'm on Windows and I activated the env using ".\env\Scripts\activate.bat" instead of the one you did in your terminal. I tested pytest --version and it's installed successfully.)
P.S #2: Sorry, I fixed it. I had a typo. But the error was scary and unreadable! Thanks anyways I enjoyed it very much when the test passed! :) I didn't delete the error so if someone else bumps into the same error can see my comment.
P.S #3: How about writing the test functions in a separate file? How should we run them? Should we use globs in that case? e.g:
pytest test_*.py?Hey @aderchox . If the test is in a different file, still just running
pytestwhile in the project directory should discover the test files, as long as they're named in the formattest_*.py.You can read more about test discovery here.
import re
import pytest
def check_email_format(email):
if not (re.match(r"([a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+.[a-zA-Z0-9-.]+$)", email)):
return False
return True
def test_email_exception():
assert check_email_format("good@email.com") == True
assert check_email_format("good.com") == False
Nice post.